Maxillary sinus lifting and planting composite guide plate with precise outward windowing and manufacturing method of maxillary sinus lifting and planting composite guide plate

Abstract

The invention discloses an accurate outward-windowing maxillary sinus lifting implantation composite guide plate and a manufacturing method thereof, the composite guide plate is made of metal pure titanium, and the composite guide plate comprises a tooth support type whole-course implantation guide device, a connecting rod and a maxillary sinus side wall windowing guide device; the tooth support type whole-course implant guide device is used for fixing a composite guide plate and guiding the positions of an implant nest and an implant; the maxillary sinus side wall windowing guiding device is used for achieving positioning and depth setting of a to-be-windowed part of the maxillary sinus. The connecting rod is used for connecting the tooth support type whole-course implantation guiding device and the maxillary sinus side wall windowing guiding device; the tooth support type whole-course implantation guiding device, the connecting rod and the maxillary sinus side wall windowing guiding device are sequentially arranged from bottom to top in maxillary sinus lifting implantation.

Description

Technical Field

[0001] The present invention relates to the field of oral implantation, and in particular to a composite guide plate for maxillary sinus lifting and implantation with a precise outward opening window and a manufacturing method thereof. Background Art

[0002] With the continuous development of oral implant technology, the demand for treatment of patients with insufficient maxillary bone mass is increasing. As a major air-containing cavity in the maxillary bone, the close relationship between the bottom of the maxillary sinus and the alveolar ridge makes the Lateral Sinus Floor Elevation one of the key technologies to solve the problem of insufficient maxillary bone mass. The Lateral Sinus Floor Elevation is a surgical method used to increase the vertical bone mass in the maxillary posterior area. After the lateral wall of the maxillary sinus is opened, the mucosa of the maxillary sinus floor is peeled off and pushed upward to form a gap between the mucosa of the maxillary sinus floor and the alveolar bone, and autologous bone or bone replacement materials are implanted, thereby significantly increasing the bone mass in the implant area and providing sufficient bone support for the implant.

[0003] The lateral wall of the maxillary sinus is the conventional surgical approach for maxillary sinus external lift. The lower edge of the window is required to be 3-5mm above the maxillary sinus floor, and the upper edge is located at the height to be lifted. In many cases, due to the inconsistent height of the remaining alveolar bone at different sites in the mesiodistal direction of the edentulous area, the window position is likely to be too low or too high during surgery, thus affecting the stripping and lifting effect of the maxillary sinus mucosa. At the same time, the thickness of the lateral wall, the direction and position of the arterial blood vessels, the roots of adjacent teeth, the maxillary sinus septum, the maxillary sinus cyst, the thickening of the mucosa, and other issues often affect the positioning of the lateral wall window. The deviation of the window position may damage the artery and the roots of adjacent teeth. The existence of the maxillary sinus septum increases the difficulty of the maxillary sinus external lift surgery, and the position of the septum needs to be accurately avoided when opening the lateral wall window. Therefore, during external lifting, it is very important to accurately determine the range and depth of the window in terms of the operability of maxillary sinus mucosal stripping, the lifting effect, and safety.

[0004] In order to overcome the problems of traditional maxillary sinus lift surgery, such as complex operation, great trauma, and slow postoperative recovery, the maxillary sinus lift guide came into being. The maxillary sinus lift guide can effectively reduce the surgical risk of maxillary sinus lift surgery and ensure the success of the surgery and the safety of the patient. The previous guides had defects such as low accuracy during resetting, large errors when connecting the various components, inaccurate guidance of the position and depth of the window opening on the outer wall of the maxillary sinus, insufficient material strength, contamination of the surgical area by the material debris cut by the bur, and single function. There were certain problems during use. Summary of the invention

[0005] The present invention mainly solves the defects of the existing maxillary sinus external lifting guide plate used for maxillary sinus external lifting, such as low resetting accuracy, large errors when connecting the combined components, inaccurate guidance of the window opening position and depth of the maxillary sinus outer wall, insufficient material strength, material debris from the cutting needle contaminating the surgical area, and single function. The present invention discloses a maxillary sinus lifting and implantation composite guide plate with precise external window opening and a manufacturing method thereof.

[0006] In a first aspect of the embodiment of the present application, a composite guide plate for maxillary sinus lifting and implantation with precise external opening of a window is disclosed, which is made of pure titanium metal and includes: a tooth-supported full-course implantation guide device, a connecting rod and a maxillary sinus side wall window opening guide device;

[0007] The tooth-supported full-course implantation guiding device is used to fix the composite guide plate and guide the position of the implantation socket and the implant;

[0008] The maxillary sinus lateral wall window opening guide device is used to realize the positioning and depth setting of the intended window opening position of the maxillary sinus;

[0009] The connecting rod is used to connect the tooth-supported full-course implantation guiding device and the maxillary sinus lateral wall window opening guiding device;

[0010] The tooth-supported full-course implantation guide device, the connecting rod and the maxillary sinus side wall window opening guide device are arranged in sequence from bottom to top during maxillary sinus lifting implantation.

[0011] The tooth-supported fully guided implant device comprises a retaining part and an implant guiding part;

[0012] The inner wall of the retention part is in contact with the occlusal surface of the natural teeth and the buccal and lingual surfaces above the undercut area. The retention part extends to at least two natural teeth on both sides of the user's edentulous area, and the retention part is supported and retained by the natural teeth on both sides. A visual window is provided at a position of the retention part corresponding to the cusp of the natural teeth, so as to observe whether the maxillary sinus lifting implant composite guide plate is accurately positioned during the implantation operation;

[0013] The implantation guide part is an embedded circular ring structure arranged at a position corresponding to the user's edentulous area, and is used to guide the preparation of the implantation hole and the implantation of the implant throughout the whole process.

[0014] The maxillary sinus side wall window opening guide device is a positioning and depth-determining device placed at the intended window opening location, and is a circular ring-shaped structure, which is arranged at the outer wall of the maxillary sinus where the implantation operation is to be performed; the hollow portion of the circular ring-shaped structure determines the range of the window opening, and the upper edge height and curvature of the circular ring-shaped structure determine the depth of the window opening.

[0015] The connector is a rigid connection part between the tooth-supported full-course implantation guide device and the maxillary sinus side wall window opening guide device, and is used to assist the maxillary sinus side wall window opening guide device in positioning and maintaining stability during the implantation operation.

[0016] The connector includes 2-3 connecting columns; the diameter of the connecting column is 1mm and the distance from the bone surface is 1-2mm; the lower end of the connecting column is connected to the edge of the tooth-supported full-length implantation guide device, and the upper end of the connecting column is connected to the lower edge of the maxillary sinus side wall window opening guide device, and the connecting column rigidly connects the two guide devices into a whole.

[0017] In a second aspect of the embodiment of the present application, a method for manufacturing a composite guide plate for maxillary sinus lifting and implantation with a precise outward opening window is disclosed, which is used to manufacture the composite guide plate for maxillary sinus lifting and implantation with a precise outward opening window, comprising:

[0018] S1, acquiring a three-dimensional imaging data set of the user's oral cavity; the three-dimensional imaging data set of the oral cavity includes three-dimensional imaging data of the jaw, dentition, and maxillary sinus;

[0019] S2, acquiring a three-dimensional digital model data set of teeth and soft tissues in the user's oral cavity;

[0020] S3, performing registration processing on the three-dimensional imaging data set of the outer side of the oral cavity and the three-dimensional digital model data set of the teeth and soft tissues in the oral cavity to obtain a registered data set;

[0021] S4, based on the registration data set, the maxillary sinus lifting implant composite guide plate with precise outward opening window is manufactured.

[0022] The registering process of the three-dimensional imaging dataset of the outer side of the oral cavity and the three-dimensional digital model dataset of the teeth and soft tissues in the oral cavity to obtain the registered dataset includes:

[0023] S31, obtaining three-dimensional imaging data and three-dimensional digital model data of the user's oral cavity; the three-dimensional imaging data and three-dimensional digital model data are both three-dimensional position coordinate data of the user's oral cavity;

[0024] S32, constructing a registration optimization model;

[0025] The expression of the registration optimization model is:

[0026] min|P2-RP1-K|,

[0027] RR T =E,

[0028] Wherein, R is the rotation matrix to be solved, K is the translation matrix to be solved, P1 is the first matrix constructed using all three-dimensional imaging data of the same part of the user's oral cavity; the row vector of the first matrix is ​​the three-dimensional imaging data, P2 is the second matrix constructed using all three-dimensional imaging data of the same part of the user's oral cavity; the row vector of the second matrix is ​​the three-dimensional digital model data; E is the unit matrix;

[0029] S33, solving the registration optimization model to obtain a rotation matrix and a translation matrix;

[0030] S34, performing weighted fusion processing on the data in the three-dimensional imaging data set of the outer side of the oral cavity and the data in the three-dimensional digital model data set of the teeth and soft tissues in the oral cavity corresponding to each part of the user's oral cavity to obtain fused data;

[0031] S35, using all the fused data, construct a registration data set;

[0032] The weighted fusion process is expressed as follows:

[0033]

[0034] Among them, χ i is the i-th fusion data, α i is the data in the three-dimensional imaging data set of the outer side of the oral cavity corresponding to the i-th part of the user's oral cavity, β i is the data in the three-dimensional digital model data set of the teeth and soft tissues in the oral cavity corresponding to the i-th part of the user's oral cavity, |||| represents the modulus value of the vector, and exp represents the exponential operation of the natural logarithm.

[0035] The method of manufacturing the maxillary sinus lifting implant composite guide plate with precise external opening window based on the registration data set includes:

[0036] S41, based on the registration data set, generates the maxillary sinus lift implant composite guide data that can be used for 3D printing;

[0037] S42, according to the maxillary sinus lifting and implantation composite guide plate data, 3D printing is performed on the pure titanium material to obtain the maxillary sinus lifting and implantation composite guide plate with precise outward opening.

[0038] The method of generating the maxillary sinus lift implant composite guide data that can be used for 3D printing based on the registration data set includes:

[0039] S411, generating implant position information and tooth-supported full-course implantation guiding device data according to the user's edentulous area position in the registration data set; the tooth-supported full-course implantation guiding device data includes implantation guiding device position data and implantation guiding device shape data;

[0040] S412, using the registration data set, generating connection rod data and maxillary sinus lateral wall window opening guide device data;

[0041] S413, using the tooth-supported full-course implantation guiding device data, the connecting rod data and the maxillary sinus side wall window opening guiding device data, construct the maxillary sinus lifting implantation composite guide plate data that can be used for 3D printing.

[0042] The step of generating the connecting rod data and the maxillary sinus lateral wall window opening guide device data by using the registration data set includes:

[0043] S4121, extracting implant position information and a maxillary sinus three-dimensional dataset from the registration dataset;

[0044] S4122, using the implant position information and the maxillary sinus three-dimensional data set, generating maxillary sinus lateral wall window opening guide device data; the maxillary sinus lateral wall window opening guide device data includes the window opening guide device position data and the window opening guide device shape data;

[0045] S4123, generating connection rod data according to the data of the maxillary sinus lateral wall window opening guide device and the data of the tooth-supported full-length implantation guide device.

[0046] The beneficial effects of the present invention are:

[0047] The guide plate of the present invention simplifies the surgical process, improves surgical accuracy, and reduces postoperative complications, thereby meeting the patient's demand for high-quality oral implants. Its beneficial effects include:

[0048] (1) Optimize the bone augmentation effect. The precise position of the implant is designed based on restoration before surgery. The position and range of the side wall window are individually designed based on the implant position and the morphology of the maxillary sinus. The guide plate can guide the doctor to perform the stripping of the maxillary sinus floor mucosa and the implantation of the bone graft material at the best position, so that the transplanted bone material can be filled as fully as possible, thereby optimizing the bone augmentation effect and providing a stable support environment for the implant.

[0049] (2) Optimize the surgical process and improve surgical accuracy. Through precise preoperative planning and intraoperative guide guidance, the accuracy of each step of the operation is ensured, human errors are reduced, and the surgical operation can be completed more quickly and accurately, shortening the operation time, improving surgical efficiency, and reducing the risk of implant failure caused by inaccurate surgical path or poor bone augmentation effect.

[0050] (3) Reduce the risk of maxillary sinus mucosal perforation. The upper edge of the guide fenestration device is designed based on the inner surface morphology of the outer wall of the maxillary sinus. Even if the thickness of the outer wall is inconsistent and the shape is irregular, it can ensure that the tip of the drill needle maintains a safe distance of about 0.5 mm from the maxillary sinus mucosa, reducing the possibility of maxillary sinus mucosal perforation during external lifting.

[0051] (4) The guide plate is light, strong and comfortable. The integrated design ensures smooth positioning and good retention during surgery, reducing errors caused by inaccurate positioning of the guide plate or deviations of the combined components. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a surface diagram of the composite planting guide plate of the present invention;

[0053] Figure 2 This is a tissue surface diagram of the composite implant guide plate of the present invention;

[0054] Figure 3 It is a flow chart for implementing the method of the present invention. DETAILED DESCRIPTION

[0055] In order to better understand the content of the present invention, an embodiment is given here.

[0056] Figure 1 It is a surface diagram of the composite planting guide plate of the present invention; Figure 2 This is a tissue surface diagram of the composite implant guide plate of the present invention; Figure 3 It is a flow chart for implementing the method of the present invention.

[0057] Figure 1 and Figure 2 In the figure, 101 is a window opening guide device for the side wall of the maxillary sinus, 102 is a connecting rod, 103 is a tooth-supported full-length implantation guide device, and 104 is an implantation guide part of the tooth-supported full-length implantation guide device, which is a circular ring structure.

[0058] In view of the defects of the existing maxillary sinus external elevation guide plate used for maxillary sinus external elevation, such as low resetting accuracy, large errors when connecting the combined components, inaccurate guidance of the window opening position and depth of the maxillary sinus lateral wall, insufficient material strength, material debris from the cutting needle contaminating the surgical area, and single function, the present invention discloses a maxillary sinus elevation implant composite guide plate with precise external window opening and a manufacturing method thereof.

[0059] In a first aspect of the embodiment of the present application, a composite guide plate for maxillary sinus lifting and implantation with precise external opening of a window is disclosed, which is made of pure titanium metal and includes: a tooth-supported full-course implantation guide device, a connecting rod and a maxillary sinus side wall window opening guide device;

[0060] The tooth-supported full-course implantation guiding device is used to fix the composite guide plate and guide the position of the implantation socket and the implant;

[0061] The maxillary sinus lateral wall window opening guide device is used to realize the positioning and depth setting of the intended window opening position of the maxillary sinus;

[0062] The connecting rod is used to connect the tooth-supported full-course implantation guiding device and the maxillary sinus lateral wall window opening guiding device.

[0063] The tooth-supported full-course implantation guide device, the connecting rod and the maxillary sinus side wall window opening guide device are arranged in sequence from bottom to top during maxillary sinus lifting implantation;

[0064] The tooth-supported fully guided implant device comprises a retaining part and an implant guiding part;

[0065] The inner wall of the retention part is in contact with the occlusal surface of the natural teeth and the buccal and lingual surfaces above the undercut area. The retention part extends to at least two natural teeth on both sides of the user's edentulous area, and the retention part is supported and retained by the natural teeth on both sides. A visual window is provided at a position of the retention part corresponding to the cusp of the natural teeth, so as to observe whether the maxillary sinus lifting implant composite guide plate is accurately positioned during the implantation operation;

[0066] The implantation guide part is provided with an embedded guide ring at a position corresponding to the user's toothless area, which is used to guide the preparation of the implantation hole and the implantation of the implant throughout the whole process; the guide ring is a circular ring structure; the guide ring corresponds to the dental implant system;

[0067] The maxillary sinus lateral wall window opening guide device is a positioning and depth setting device placed at the intended window opening position, and is a circular ring-shaped structure. The circular ring of the circular ring-shaped structure is arranged at the outer wall of the maxillary sinus where the implantation operation is to be performed; the hollow part of the circular ring determines the window opening range, and the upper edge height and curvature of the circular ring-shaped structure determine the window opening depth;

[0068] The connector is a rigid connection part between the tooth-supported full-course implantation guide device and the maxillary sinus side wall window opening guide device, and is used to assist the maxillary sinus side wall window opening guide device in positioning and maintaining stability during the implantation operation.

[0069] The connector includes 2-3 connecting columns; the diameter of the connecting column is 1mm, and the distance from the bone surface is 1-2mm, ensuring that there is no bone obstruction when in place; the lower end of the connecting column is connected to the edge of the tooth-supported full-length implant guide device, and the upper end of the connecting column is connected to the lower edge of the maxillary sinus side wall window guide device. The connecting column rigidly connects the two guide devices into a whole, which is used to assist the window guide device to be well positioned and maintain stability, without the need to increase retention holes, thereby reducing surgical trauma.

[0070] In a first aspect of the embodiment of the present application, a method for manufacturing a composite guide plate for maxillary sinus lifting and implantation with a precise outward opening window is disclosed, which is used to manufacture the composite guide plate for maxillary sinus lifting and implantation with a precise outward opening window, comprising:

[0071] S1, acquiring a three-dimensional imaging data set of the user's oral cavity; the three-dimensional imaging data set of the oral cavity includes three-dimensional imaging data of the jaw, dentition, and maxillary sinus;

[0072] S2, acquiring a three-dimensional digital model data set of teeth and soft tissues in the user's oral cavity;

[0073] S3, performing registration processing on the three-dimensional imaging data set of the outer side of the oral cavity and the three-dimensional digital model data set of the teeth and soft tissues in the oral cavity to obtain a registered data set;

[0074] S4, based on the registration data set, manufacturing the maxillary sinus lifting implant composite guide plate with precise external opening window;

[0075] The registering process of the three-dimensional imaging dataset of the outer side of the oral cavity and the three-dimensional digital model dataset of the teeth and soft tissues in the oral cavity to obtain the registered dataset includes:

[0076] S31, obtaining three-dimensional imaging data and three-dimensional digital model data of the user's oral cavity; the three-dimensional imaging data and three-dimensional digital model data are both three-dimensional position coordinate data of the user's oral cavity;

[0077] S32, constructing a registration optimization model;

[0078] The expression of the registration optimization model is:

[0079] min|P2-RP1-K|,

[0080] RR T =E,

[0081] Wherein, R is the rotation matrix to be solved, K is the translation matrix to be solved, P1 is the first matrix constructed using all three-dimensional imaging data of the same part of the user's oral cavity; the row vector of the first matrix is ​​the three-dimensional imaging data, P2 is the second matrix constructed using all three-dimensional imaging data of the same part of the user's oral cavity; the row vector of the second matrix is ​​the three-dimensional digital model data; E is the unit matrix;

[0082] S33, solving the registration optimization model to obtain a rotation matrix and a translation matrix;

[0083] S34, performing weighted fusion processing on the data in the three-dimensional imaging data set of the outer side of the oral cavity and the data in the three-dimensional digital model data set of the teeth and soft tissues in the oral cavity corresponding to each part of the user's oral cavity to obtain fused data;

[0084] S35, using all the fused data, construct a registration data set;

[0085] The weighted fusion process is expressed as follows:

[0086]

[0087] Among them, χ i is the i-th fusion data, α i is the data in the three-dimensional imaging data set of the outer side of the oral cavity corresponding to the i-th part of the user's oral cavity, β i is the data in the three-dimensional digital model data set of the teeth and soft tissues in the oral cavity corresponding to the i-th part of the user's oral cavity, |||| represents the modulus value of the vector, and exp represents the exponential operation of the natural logarithm;

[0088] The method of manufacturing the maxillary sinus lifting implant composite guide plate with precise external opening window based on the registration data set includes:

[0089] S41, based on the registration data set, generates the maxillary sinus lift implant composite guide data that can be used for 3D printing;

[0090] S42, according to the maxillary sinus lifting and implantation composite guide plate data, 3D printing is performed on the pure titanium material to obtain the maxillary sinus lifting and implantation composite guide plate with precise outward opening.

[0091] The method of generating the maxillary sinus lift implant composite guide data that can be used for 3D printing based on the registration data set includes:

[0092] S411, generating implant position information and tooth-supported full-course implantation guiding device data according to the user's edentulous area position in the registration data set; the tooth-supported full-course implantation guiding device data includes implantation guiding device position data and implantation guiding device shape data;

[0093] S412, using the registration data set, generating connection rod data and maxillary sinus lateral wall window opening guide device data;

[0094] S413, constructing maxillary sinus lifting implant composite guide data that can be used for 3D printing using the tooth-supported full-course implantation guide device data, the connecting rod data, and the maxillary sinus side wall window opening guide device data;

[0095] The generation of the maxillary sinus lift implant composite guide data that can be used for 3D printing based on the registration data set can be achieved using oral implant planning software, such as Yake Intelligent Implant Planning Software.

[0096] The method uses the tooth-supported full-course implantation guide device data, the connecting rod data, and the maxillary sinus side wall window opening guide device data to construct the maxillary sinus lifting implantation composite guide plate data that can be used for 3D printing, including:

[0097] ① In the "Model Manager", select the implant guide and the outer wall window guide, use the "Polygon" → "Union" command to unite them, and output the file in ".stl" format.

[0098] ② Import Magcis, use "Create Pillar" → "Apply" to connect the two guide plates through three pillars to form an integrated outward-opening window positioning and depth-fixed planting guide plate.

[0099] ③Optimize the smoothing guide plate data and export it as an STL format file.

[0100] The step of using the registration data set to generate the connecting rod data and the maxillary sinus lateral wall window opening guide device data comprises:

[0101] S4121, extracting implant position information and a maxillary sinus three-dimensional dataset from the registration dataset;

[0102] S4122, using the implant position information and the maxillary sinus three-dimensional data set, generating maxillary sinus lateral wall window opening guide device data; the maxillary sinus lateral wall window opening guide device data includes the window opening guide device position data and the window opening guide device shape data;

[0103] S4123, generating connection rod data according to the data of the maxillary sinus lateral wall window opening guide device and the data of the tooth-supported full-course implantation guide device;

[0104] The method of generating implant position information and tooth-supported full-course implantation guiding device data according to the position of the user's edentulous area in the registration data set includes:

[0105] Using Yake Intelligent Implant Planning Software, digitally arrange the teeth at the missing teeth site according to the adjacent teeth position and occlusal relationship, place the implant on the jawbone with restoration as the guide, and obtain the implant position information and shape information (including diameter and length);

[0106] Using Yake intelligent implant planning software, the corresponding full-length guide ring is generated at the missing tooth position, the direction of the positioning path is adjusted, the guide plate range is drawn, the tooth-supported full-length implant guidance device data is generated, and a visual window is set at the apex of the tooth to observe whether the guide plate is in place during the operation.

[0107] The tooth-supported full-course implantation guiding device data includes implantation guiding device position data and implantation guiding device shape data;

[0108] The method of generating data of a guide device for opening a window on the side wall of the maxillary sinus by using the implant position information and the maxillary sinus three-dimensional data set comprises:

[0109] (1) Extraction and construction of 3D models of maxillary bone, maxillary sinus, and implants

[0110] In Yake Smart Software, the automatic segmentation function is used to extract and construct the three-dimensional models of the maxilla, maxillary sinus, and implants, and the files are output in ".stl" format.

[0111] (2) Design of the outer wall window positioning and depth guidance device in Geomagic Wrap 2021

[0112] ① Adjust the coordinate system: import the maxillary bone and implant guide STL data, select the inner surface of the outer wall of the maxillary sinus, use "Feature" → "Plane" → "Best Fit" → "Apply" → "OK"; then use "Align" → "Align to Global" → "YZ Plane" → "Create Pair" → "OK" to adjust the jaw coordinate system to ensure that the inner surface of the outer wall is perpendicular to the X axis. Save the matrix and load it into the virtually designed implant and implant guide to make the maxillary bone, implant, and implant guide coordinate systems consistent.

[0113] ② Extract the inner surface morphology of the lateral wall window range: select the reconstructed maxillary bone model and the virtually designed implant, use "Display" → "General" → "Transparency" to adjust the appropriate transparency so that the maxillary sinus cavity and the virtually designed implant are clearly displayed, use the "Lasso Selection Tool" to design and select the window position according to the position of the implant and the morphology of the maxillary sinus, right-click "Invert Selection", select the remaining part after "Invert Selection", and right-click → "Delete" to retain the selected window position.

[0114] ③ Use "Move" → "Precise Move" to move the surface 8.5mm along the X-axis lip side to determine the upper edge boundary of the outer lifting guide. Use "Polygon" → "Shell" → "Shell Polygon" to set the thickness to 3mm; select the outer surface contour, "Shell" → "Shell Polygon", set the thickness to 1.5mm, thus forming a window guide with a boundary width of 1.5mm and a vertical thickness of 3mm.

[0115] ④ Use the "Polygon" → "Cut" → "Cut with Plane" function to trim the tissue surface of the guide plate into a plane, ensuring that it is 2 mm away from the outer surface of the lateral wall of the maxillary sinus, and obtain the data of the maxillary sinus lateral wall window guide device;

[0116] The upper edge of the annular structure is vertically upward and is provided with a needle with an 8mm stop mark 8.5mm away from the inner surface of the outer wall of the maxillary sinus where the implant operation is to be performed, so as to ensure a safe distance of 0.5mm between the top of the needle and the maxillary sinus mucosa.

[0117] Solving the registration optimization model to obtain a rotation matrix and a translation matrix may adopt a simplex method or a graphical model method;

[0118] The registration optimization model is solved to obtain a rotation matrix and a translation matrix, including:

[0119] S41, determine f=|P2-RP1-K|, which is the target optimization function; construct and initialize the individual set and the number of iterations, and use the initialized individual set to construct the parent individual set; the parent individual set includes a number of parent individuals; the parent individuals include corresponding chromosome vectors and step lengths; the chromosome vector is obtained by concatenating the row vectors of the rotation matrix and the translation matrix;

[0120] The chromosome vector is obtained by concatenating all row vectors of the rotation matrix and the translation matrix in sequence according to the row number or column number;

[0121] The use of the initialized individual set to construct the parent individual set may be to use the initialized individual set as the parent individual set; the number of initialization iterations is to set the number of iterations to 1. The concatenation is to merge multiple vectors into a row vector without changing the order and value of elements in each vector.

[0122] S42, using an adversarial sample comparison operation, updating the step size of the parent individual;

[0123] S43, splitting the parent generation individual set to obtain individual subsets;

[0124] The splitting of the parent generation individual set may be a random splitting or a uniform splitting or a splitting according to a preset ratio to obtain an individual subset;

[0125] S44, performing a grading operation on each individual subset according to the step length of the parent individual to obtain a corresponding stratified individual subset;

[0126] S45, performing a gene exchange operation on the stratified individual subsets of the same level belonging to different individual subsets to obtain a set of offspring individuals;

[0127] S46, calculating a comprehensive performance index for the offspring individual set to obtain a comprehensive performance index;

[0128] S47, using the comprehensive performance index, performing a migration operation on the offspring individual set to obtain a migrated offspring individual set and an individual with the best fitness;

[0129] S48, performing iteration stop judgment processing on the comprehensive performance index and the number of iterations to obtain an iteration stop judgment result;

[0130] If the result of the iteration stop judgment is yes, the individual with the best fitness is used to construct a rotation matrix and a translation matrix to complete the solution process of the target optimization function;

[0131] If the result of the iteration stop judgment is no, increase the number of iterations, use the migration offspring individual set to construct the parent individual set, and execute step S42.

[0132] The use of the individual with the best fitness to construct a rotation matrix and a translation matrix is ​​to divide the individual with the best fitness into m elements as a vector, evenly divide it into n vectors, and use all the vectors as column vectors to construct a rotation matrix and a translation matrix;

[0133] The step size of the parent individual is updated by using the adversarial sample comparison operation, including:

[0134] S421, dynamically add noise to the chromosome vector of the parent individual to obtain a chromosome vector after adding noise; the expression p1 of the chromosome vector after adding noise is:

[0135] p1=p0+δβ(t),

[0136] Among them, p0 is the chromosome value of the parent individual before noise enhancement, δ is the Gaussian noise vector, β(t) is the dynamic weight at time t, which is used to balance the objective function in individual evaluation and the penalty weight of adversarial samples; the expression of β(t) is:

[0137]

[0138] Among them, ti represents the number of iterations, T0 and T1 represent the first turning point iteration number and the second turning point iteration number respectively, β0 and β1 represent the first weight value and the second weight value respectively, which are used to increase the diversity of individuals and improve the global search ability of the solution method.

[0139] S422, for each parent individual, establish a corresponding adversarial sample set; the adversarial sample set includes a plurality of adversarial samples; the adversarial sample includes a corresponding chromosome vector and step length;

[0140] For each parent individual, a corresponding adversarial sample set is established, including:

[0141] S4221, based on the distance between the chromosome vectors of the parent individuals, searching for a set of neighbor individuals whose distance to the parent individuals is less than a set distance threshold;

[0142] S4222, perform chromosome vector ratio weighting processing on the parent individual and the neighbor individual set to construct the chromosome vector of the adversarial sample; the step length of the adversarial sample is randomly generated;

[0143] S4223, merging the adversarial samples obtained in step S4222 to obtain an adversarial sample set;

[0144] The chromosome vector ratio weighted processing includes: establishing a number of related adversarial samples a ij , which is generated in a proportional weighted manner, namely:

[0145] a ij =a1×p i +a2×p ij ,

[0146] Among them, a1 and a1 are proportional weighting coefficients, the sum of the two is 1, p i is the i-th parent individual, p ij is the jth neighbor individual of the i-th parent individual.

[0147] S423, performing robust index judgment processing on the parent individuals and their corresponding adversarial sample sets to obtain robust index judgment results;

[0148] If the robust index judgment result is greater than 0, the step length of the parent individual is reduced by 1;

[0149] If the robust index judgment result is less than 0, the step length of the parent individual is increased by 1;

[0150] The robust index judgment processing is performed on the parent individuals and their corresponding adversarial sample sets to obtain the robust index judgment results, including:

[0151] S4231, calculate the robustness index of the parent individuals and adversarial samples, and its calculation expression is:

[0152]

[0153] in, Represents the parent individual p i The robustness index, f(p i ) represents the parent individual p i The objective optimization function value, f(a ij ) represents the parent individual p iThe target optimization function value of the j-th adversarial sample, m1 is the number of adversarial samples contained in the adversarial sample set, and α is the adversarial sample penalty weight, which is used to control the penalty weight of the adversarial sample.

[0154] S4232, determining whether the robustness index is greater than 0, and obtaining a robustness index determination result;

[0155] The step size of the parent individual is used to perform a grading operation on each individual subset to obtain a corresponding stratified individual subset, including:

[0156] S441, setting the step value range corresponding to each level;

[0157] S442, matching the step length of the parent individual with a value range to obtain a step length value range corresponding to the parent individual;

[0158] S443, according to the step value range corresponding to the parent individual, classify the parent individual into a level corresponding to the step value range;

[0159] S444, merging the parent individuals belonging to the same level in the individual subset to obtain a hierarchical individual subset of the individual subset;

[0160] The step S44 may be that the stratification is based on the step length of the individual, and the parent individuals satisfying the step length < 3 are divided into one layer, the parent individuals satisfying 3≤step length<10 are divided into two layers, and the parent individuals satisfying 10≤step length are divided into three layers; the levels include one layer, two layers and three layers.

[0161] The gene exchange operation in step S45 includes:

[0162] Gene exchange is performed between stratified individual subsets in different individual subsets at the same level, and gene exchange is performed between different stratified individual subsets to increase individual diversity and global search capabilities. Specifically, for each stratified individual subset P i , in its neighborhood, randomly select several stratified individual subsets to construct the subset P i The neighboring subset N(P i ), and perform gene exchange operation. Stratified individual subset P i The neighborhood of is the stratified individual subset P i The distances of the parent individuals in the stratified individual subsets are all smaller than the preset distances of the parent individuals in the stratified individual subsets. The gene exchange operation includes a crossover operation and a mutation operation.

[0163] The crossover operation is performed on the stratified individual subset P iA variable is randomly selected from the chromosome vector of the parent individual in as the crossover point, and the stratified individual subset P i The parent individual and the neighboring subset N(P i ) are exchanged at the crossover point to generate the chromosome vector of the offspring individual after the crossover operation. The specific implementation method is as follows: Let the stratified individual subset P i The chromosome vector of the parent individual, and the neighboring subset N(P i ) are P1 and P2, their chromosome lengths are both L, and the crossover points i∈1,2,…,L-1 are randomly selected. Then, two crossover parent individuals C1 and C2 can be obtained, whose chromosome vectors are derived from the crossover of the parent individuals:

[0164] C1=[P1[1],P1[2],…,P1[i],P2[i+1],P2[i+2],…,P2[L]]

[0165] C2=[P2[1],P2[2],…,P2[i],P1[i+1],P1[i+2],…,P1[L]]

[0166] Among them, P1[j] represents the j-th value of the chromosome vector of the parent individual P1, that is, the j-th gene value, and P2[j] represents the j-th gene value of the parent individual P2.

[0167] The mutation operation is to transform the stratified individual subset P after the crossover operation i The chromosome vector of the parent individual is randomly selected and one or more vectors are changed to generate the chromosome vector of the new offspring individual. The specific implementation method is as follows: suppose a parent individual is P, whose chromosome length is L, randomly select one or more mutation sites i∈1,2,…,L, and randomly generate a new gene value g, then a new offspring individual C can be obtained, whose chromosome is derived from the mutation of the parent individual:

[0168] C=[P[1],P[2],…,P[i-1],g,P[i+1],…,P[L]]

[0169] Among them, P[j] represents the j-th gene value of the chromosome vector of the parent individual P.

[0170] The generated offspring individuals are used to replace the corresponding parent individuals in the parent individual set to obtain the offspring individual set. Correspondingly, the generated offspring individuals are used to replace the corresponding parent individuals in the parent individual subset to obtain the offspring individual subset; the generated offspring individuals are used to replace the corresponding parent individuals in the parent stratified individual subset to obtain the offspring stratified individual subset.

[0171] The calculation expression of the comprehensive performance index is:

[0172] U M (x1)=F(x1)+D(x1)

[0173] Among them, U M () is the comprehensive performance index calculation function, F() is the target optimization function, D() is the crowding distance index function, x1 is the rotation matrix and translation matrix corresponding to the chromosome vector of the offspring individual; the crowding distance index, its calculation expression is:

[0174]

[0175] Wherein, N(x1) represents the set of k offspring individuals in the offspring individual set that are closest to the offspring individual corresponding to x1, y is the offspring individual in the set N(x1), k is the preset individual number parameter, and D(y) represents the Euclidean distance between the offspring individual corresponding to x1 and the offspring individual y.

[0176] The step of using the comprehensive performance index to perform a migration operation on the offspring individual set to obtain a migrated offspring individual set and an individual with the best fitness includes:

[0177] S471, according to the comprehensive performance index of the offspring individuals, for each offspring individual subset, respectively perform a comprehensive performance index search operation to obtain the offspring individual with the best comprehensive performance index and the offspring individual with the comprehensive performance index lower than the preset index threshold; for the offspring individual subset, the offspring individual with the best comprehensive performance index and the offspring individual with the comprehensive performance index lower than the preset index threshold are respectively used as the best individual and the inferior individual of the offspring individual subset;

[0178] S472, in each descendant subset, migrate the best individual of the descendant subset to a hierarchical individual subset of a higher level, and increase the step size of the best individual according to the step size value range of the migrated hierarchical individual subset;

[0179] S473, in each offspring subset, migrate the inferior individuals of the offspring subset to a hierarchical individual subset of a lower level, and reduce the step size of the optimal individual according to the step size value range of the migrated hierarchical individual subset;

[0180] In particular, if the optimal individual is already in the highest level of the hierarchical individual subset, or the inferior individual is already in the lowest level of the hierarchical individual subset, no migration operation is performed on the individual.

[0181] S474, constructing a set of migrated offspring individuals using all the offspring subsets that have completed the migration;

[0182] The step S474 may be to use all the offspring subsets that have completed the migration as the migration offspring individual set;

[0183] S475, searching for an offspring individual with the best comprehensive performance index in the set of migrated offspring individuals, and taking the offspring individual as the individual with the best fitness.

[0184] The performing iteration stop judgment processing on the comprehensive performance index and the number of iterations to obtain an iteration stop judgment result includes:

[0185] Determine whether the comprehensive performance index of the individual with the best fitness is better than the preset optimal index threshold, and whether the number of iterations is greater than the preset number of iterations threshold. If any of the judgment conditions is yes, determine that the iteration stop judgment result is yes; if the above two judgment conditions are both no, determine that the iteration stop judgment result is no.

[0186] The third aspect of the embodiments of the present invention relates to a precise external window implantation composite guide plate, which is made of pure titanium metal with a thickness of about 1-1.5 mm, and its functional structure includes: ① a tooth-supported full-length implantation guide device; ② a connecting rod; ③ a maxillary sinus lateral wall window guide device, and the three parts are arranged in sequence from bottom to top.

[0187] ① Tooth-supported full-process implant guidance device: It includes a retention part and an implant guidance part, wherein the retention part extends to at least two natural teeth on both sides of the edentulous area, and the inner wall fits the occlusal surface of the natural teeth and the buccal and lingual surfaces above the undercut area. The guide plate is supported and retained by the natural teeth on both sides, and a visual window is set at the cusp to observe whether the guide plate is accurately positioned during the operation. The implant guidance part is equipped with guide rings matching different implant systems in the edentulous area to guide the preparation of the implant pit and the implantation of the implant throughout the process.

[0188] ②Connecting rods: generally 2-3, cylindrical, about 1mm in diameter, 1-2mm away from the bone surface, to ensure no bone obstruction when in place. The lower end is connected to the labial edge of the implant guide, and the upper end is connected to the lower edge of the sidewall window guide, rigidly connecting the two guides into a whole, assisting the window guide to be well positioned and stable, without adding retention holes, and reducing surgical trauma.

[0189] ③ Maxillary sinus lateral wall window guide device: The thickness is about 1.5mm, and a window is reserved on the lateral wall of the maxillary sinus. Its shape determines the scope of the window. The position and size of the window are determined by the amount of bone grafting, the position and number of implants, and the shape of the maxillary sinus. If there is a maxillary sinus septum, two window guide devices can be designed on both sides of the septum. The arc of the upper edge determines the depth of the window, that is, the upper edge is 8.5mm vertically upward from the inner surface of the lateral wall of the maxillary sinus. With the bur with an 8mm stop mark, a safe distance of 0.5mm is ensured between the top of the bur and the maxillary sinus mucosa. The tissue surface is >2mm away from the outer surface of the lateral wall of the maxillary sinus, which is conducive to the placement of the composite guide plate and avoids the bur grinding against the side wall when opening the window.

[0190] In a fourth aspect of the embodiments of the present invention, a method for manufacturing a composite guide plate for maxillary sinus lifting and implantation with a precise outward opening window is disclosed, and the method is used to manufacture the composite guide plate for maxillary sinus lifting and implantation with a precise outward opening window, comprising:

[0191] (1) Acquisition of three-dimensional imaging data of the patient's jaw, dentition, and maxillary sinus

[0192] The patient kept the upper and lower dentitions separated and the jaw position stable, and a cone beam CT scan was taken. The field of view included the complete upper and lower jaws, maxillary sinus and dentition area, and the data format was ".dicom".

[0193] (2) Acquisition of digital model of patient’s teeth and soft tissue surface information

[0194] Direct intraoral scanning is performed using an intraoral scanner, or an impression of the entire dentition of the patient is taken and a plaster model is cast, followed by a dental model scan. The data format is ".stl".

[0195] (3) Implant planning and generation of implant surgery guidance devices

[0196] ① Import the patient's imaging DICOM data and digital model STL data into the oral implant planning software (such as Yake Intelligent Implant Planning Software), and use the feature points on the tooth surface for alignment.

[0197] ② Using Yake Intelligent Implant Planning Software, digitally arrange the missing teeth according to the position of adjacent teeth and occlusal relationship, place the implant on the jawbone with restoration as the guide, and obtain the implant position information and shape information (including diameter and length);

[0198] ③ Using the Yake smart implant planning software, generate the corresponding full-course guide ring at the missing tooth position, adjust the direction of the placement path, draw the range of the guide plate, generate the data of the tooth-supported full-course implant guide device, and set a visual window at the cusp to observe whether the guide plate is in place during the operation. Using the implant position information and the maxillary sinus three-dimensional data set, generate the maxillary sinus side wall window opening guide device data.

[0199] The tooth-supported full-course implantation guiding device data includes implantation guiding device position data and implantation guiding device shape data;

[0200] (4) Extract and construct three-dimensional models of maxillary bone, maxillary sinus, and implants

[0201] In Yake Smart Software, the automatic segmentation function is used to extract and construct the three-dimensional models of the maxilla, maxillary sinus, and implants, and the files are output in ".stl" format.

[0202] (5) Design of the outer wall window positioning and depth guidance device in Geomagic Wrap 2021

[0203] ① Adjust the coordinate system: import the maxillary bone and implant guide STL data, select the inner surface of the outer wall of the maxillary sinus, use "Feature" → "Plane" → "Best Fit" → "Apply" → "OK"; then use "Align" → "Align to Global" → "YZ Plane" → "Create Pair" → "OK" to adjust the jaw coordinate system to ensure that the inner surface of the outer wall is perpendicular to the X axis. Save the matrix and load it into the virtually designed implant and implant guide to make the maxillary bone, implant, and implant guide coordinate systems consistent.

[0204] ② Extract the inner surface morphology of the lateral wall window range: select the reconstructed maxillary bone model and the virtually designed implant, use "Display" → "General" → "Transparency" to adjust the appropriate transparency so that the maxillary sinus cavity and the virtually designed implant are clearly displayed, use the "Lasso Selection Tool" to design and select the window position according to the position of the implant and the morphology of the maxillary sinus, right-click "Invert Selection", select the remaining part after "Invert Selection", and right-click → "Delete" to retain the selected window position.

[0205] ③ Use "Move" → "Precise Move" to move the surface 8.5mm along the X-axis lip side to determine the upper edge boundary of the outer lifting guide. Use "Polygon" → "Shell" → "Shell Polygon" to set the thickness to 3mm; select the outer surface contour, "Shell" → "Shell Polygon", set the thickness to 1.5mm, thus forming a window guide with a boundary width of 1.5mm and a vertical thickness of 3mm.

[0206] ④ Use the "Polygon" → "Cut" → "Cut with Plane" function to trim the tissue surface of the guide plate into a plane, ensuring that it is 2 mm away from the outer surface of the lateral wall of the maxillary sinus, and obtain the data of the maxillary sinus lateral wall window guide device;

[0207] (6) Connecting implantation and outer wall window guide device

[0208] ① In the "Model Manager", select the implant guide and the outer wall window guide, use the "Polygon" → "Union" command to unite them, and output the file in ".stl" format.

[0209] ② Import Magcis, use "Create Pillar" → "Apply" to connect the two guide plates through three pillars to form an integrated outward-opening window positioning and depth-fixed planting guide plate.

[0210] ③Optimize the smoothing guide plate data.

[0211] (7) Export the guide plate device and print and make it

[0212] Export to STL format file, use metal 3D printing technology to make a one-piece outward-opening window positioning and depth-fixing implant guide made of pure titanium material, polish the surface, and complete.

[0213] The present invention realizes an integrated digitally manufactured precise external window implantation composite guide plate, which has the multiple functions of accurately determining the window position and depth during the external elevation of the maxillary sinus and guiding the implantation surgery throughout the whole process. Through digital design and precise manufacturing, the use of high-strength and light-weight titanium metal not only realizes the lightweight of the device, but also ensures the structural strength. The integrated 3D printing production process makes the implantation guide plate have better connectivity with the external wall window positioning and depth determination device, which is easy to use and not easy to break.

[0214] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A composite guide plate for maxillary sinus lifting and implantation with precise outward opening, characterized in that: The material used is pure titanium, including: tooth-supported full-course implantation guide device, connecting rod and maxillary sinus lateral wall window guide device; The tooth-supported full-course implantation guiding device is used to fix the composite guide plate and guide the position of the implantation socket and the implant; The maxillary sinus lateral wall window opening guide device is used to realize the positioning and depth setting of the intended window opening position of the maxillary sinus; The connecting rod is used to connect the tooth-supported full-course implantation guiding device and the maxillary sinus lateral wall window opening guiding device; The tooth-supported full-course implantation guide device, the connecting rod and the maxillary sinus side wall window opening guide device are arranged in sequence from bottom to top during maxillary sinus lifting implantation.

2. The composite guide plate for maxillary sinus lifting and implantation with precise outward opening window as claimed in claim 1, characterized in that: The tooth-supported fully guided implant device comprises a retaining part and an implant guiding part; The inner wall of the retention part is in contact with the occlusal surface of the natural teeth and the buccal and lingual surfaces above the undercut area. The retention part extends to at least two natural teeth on both sides of the user's edentulous area, and the retention part is supported and retained by the natural teeth on both sides. A visual window is provided at a position of the retention part corresponding to the cusp of the natural teeth, so as to observe whether the maxillary sinus lifting implant composite guide plate is accurately positioned during the implantation operation; The implantation guide part is an embedded circular ring structure arranged at a position corresponding to the user's edentulous area, and is used to guide the preparation of the implantation hole and the implantation of the implant throughout the whole process.

3. The composite guide plate for maxillary sinus lifting and implantation with precise outward opening window as claimed in claim 1, characterized in that: The maxillary sinus side wall window opening guide device is a positioning and depth-determining device placed at the intended window opening location, and is a circular ring-shaped structure, which is arranged at the outer wall of the maxillary sinus where the implantation operation is to be performed; the hollow portion of the circular ring-shaped structure determines the range of the window opening, and the upper edge height and curvature of the circular ring-shaped structure determine the depth of the window opening.

4. The composite guide plate for maxillary sinus lifting and implantation with precise outward opening window as claimed in claim 1, characterized in that: The connector is a rigid connection part between the tooth-supported full-course implantation guide device and the maxillary sinus side wall window opening guide device, and is used to assist the maxillary sinus side wall window opening guide device in positioning and maintaining stability during the implantation operation.

5. The composite guide plate for maxillary sinus lifting and implantation with precise outward opening window as claimed in claim 4, characterized in that: The connector includes 2-3 connecting columns; the diameter of the connecting column is 1mm and the distance from the bone surface is 1-2mm; the lower end of the connecting column is connected to the edge of the tooth-supported full-length implantation guide device, and the upper end of the connecting column is connected to the lower edge of the maxillary sinus side wall window opening guide device, and the connecting column rigidly connects the two guide devices into a whole.

6. A method for manufacturing a composite guide plate for maxillary sinus lifting and implantation with a precise outward opening window, used for manufacturing the composite guide plate for maxillary sinus lifting and implantation with a precise outward opening window as claimed in any one of claims 1 to 5, characterized in that: include: S1, acquiring a three-dimensional imaging data set of the user's oral cavity; the three-dimensional imaging data set of the oral cavity includes three-dimensional imaging data of the jaw, dentition, and maxillary sinus; S2, acquiring a three-dimensional digital model data set of teeth and soft tissues in the user's oral cavity; S3, performing registration processing on the three-dimensional imaging dataset of the outer side of the oral cavity and the three-dimensional digital model dataset of the teeth and soft tissues in the oral cavity to obtain a registered dataset; S4, based on the registration data set, the maxillary sinus lifting implant composite guide plate with precise outward opening window is manufactured.

7. The method for manufacturing the composite guide plate for maxillary sinus lifting and implantation with precise outward opening window as claimed in claim 6, characterized in that: The registering process of the three-dimensional imaging dataset of the outer side of the oral cavity and the three-dimensional digital model dataset of the teeth and soft tissues in the oral cavity to obtain the registered dataset includes: S31, obtaining three-dimensional imaging data and three-dimensional digital model data of the user's oral cavity; the three-dimensional imaging data and three-dimensional digital model data are both three-dimensional position coordinate data of the user's oral cavity; S32, constructing a registration optimization model; The expression of the registration optimization model is: min|P2-RP1-K|, RR T =E, Wherein, R is the rotation matrix to be solved, K is the translation matrix to be solved, P1 is the first matrix constructed using all three-dimensional imaging data of the same part of the user's oral cavity; the row vector of the first matrix is ​​the three-dimensional imaging data, P2 is the second matrix constructed using all three-dimensional imaging data of the same part of the user's oral cavity; the row vector of the second matrix is ​​the three-dimensional digital model data; E is the unit matrix; S33, solving the registration optimization model to obtain a rotation matrix and a translation matrix; S34, performing weighted fusion processing on the data in the three-dimensional imaging data set of the outer side of the oral cavity and the data in the three-dimensional digital model data set of the teeth and soft tissues in the oral cavity corresponding to each part of the user's oral cavity to obtain fused data; S35, using all the fused data, construct a registration data set; The weighted fusion process is expressed as follows: Among them, χ i is the i-th fusion data, α i is the data in the oral cavity outer three-dimensional imaging data set corresponding to the i-th part of the user's oral cavity, β i is the data in the three-dimensional digital model data set of the teeth and soft tissues in the oral cavity corresponding to the i-th part of the user's oral cavity, || || It represents the modulus value of a vector, and exp represents the exponential operation of the natural logarithm.

8. The method for manufacturing the composite guide plate for maxillary sinus lifting and implantation with precise outward opening window as claimed in claim 6, characterized in that: The method of manufacturing the maxillary sinus lifting implant composite guide plate with precise external opening window based on the registration data set includes: S41, based on the registration data set, generates the maxillary sinus lift implant composite guide data that can be used for 3D printing; S42, according to the maxillary sinus lifting and implantation composite guide plate data, 3D printing is performed on the pure titanium material to obtain the maxillary sinus lifting and implantation composite guide plate with the precise outward opening window.

9. The method for manufacturing the composite guide plate for maxillary sinus lifting and implantation with precise outward opening window as claimed in claim 8, characterized in that: The method of generating the maxillary sinus lift implant composite guide data that can be used for 3D printing based on the registration data set includes: S411, generating implant position information and tooth-supported full-course implantation guiding device data according to the user's edentulous area position in the registration data set; the tooth-supported full-course implantation guiding device data includes implantation guiding device position data and implantation guiding device shape data; S412, using the registration data set, generating connection rod data and maxillary sinus lateral wall window opening guide device data; S413, using the tooth-supported full-course implantation guiding device data, the connecting rod data and the maxillary sinus side wall window opening guiding device data, construct the maxillary sinus lifting implantation composite guide plate data that can be used for 3D printing.

10. The method for manufacturing the composite guide plate for maxillary sinus lifting and implantation with precise outward opening window according to claim 9, characterized in that: The step of generating the connecting rod data and the maxillary sinus lateral wall window opening guide device data by using the registration data set includes: S4121, extracting implant position information and a maxillary sinus three-dimensional dataset from the registration dataset; S4122, using the implant position information and the maxillary sinus three-dimensional data set, generating maxillary sinus lateral wall window opening guide device data; the maxillary sinus lateral wall window opening guide device data includes the window opening guide device position data and the window opening guide device shape data; S4123, generating connection rod data according to the data of the maxillary sinus lateral wall window opening guide device and the data of the tooth-supported full-length implantation guide device.

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