Opening state recording device, opening state recording method and opening degree measuring method

Abstract

The invention discloses an opening state recording device, a recording method and an opening degree measuring method, and the opening state recording device comprises a main body made of an elastic material, and the main body is provided with a side surface which is configured to be in a sector ring shape. The opening state recording method comprises the following steps: S100: acquiring dentition data; s200, the maximum opening state is obtained; and S300, data fitting is carried out. The opening degree measuring method is based on the opening state recording method. The opening state recording device stably maintains the upper and lower jaw dentitions at the maximum opening position, so that the opening state recording method is used for obtaining the relative positions of the upper and lower jaw dentitions in the maximum opening state, three-dimensional modeling is achieved, and the maximum opening state is recorded on the basis of modeling. The opening degree measuring method can measure the opening degree of the oral cavity of the patient outside the oral cavity of the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of tooth implant restoration, and in particular to an opening state recording device, a recording method and an opening degree measuring method. Background Art

[0002] Implant restoration refers to the implantation of artificial implants into the alveolar bone to replace the missing natural tooth roots, support and fix the upper base, and then connect artificial crowns with the same or similar shape as natural teeth to restore the functions of chewing, pronunciation and aesthetics. Implant surgery basically includes two operations: implant pit preparation and implant placement. The basic surgical instruments required are implant mobile phones, implant drills, adapters (or nail holders) and carriers. To ensure the smooth progress of the implant surgery, the opening of the surgical area must allow the surgical instruments to move freely along the predetermined path. Therefore, it is extremely important to analyze and measure the opening of the surgical area before surgery.

[0003] The analysis and measurement of the degree of opening of the surgical area can be performed directly in the mouth, which usually requires appropriate measuring tools. Related equipment is already available on the market. The advantages of this series of technologies are: quick and convenient measurement. However, there are the following disadvantages: ① The maximum opening state is unstable, resulting in inaccurate measurement results; ② The reading is inconvenient, especially in the posterior teeth area; ③ The measuring tool may be disturbed by the teeth or mucosa and cannot be placed in place, resulting in inaccurate measurement; ④ The placement of the measuring tool is very arbitrary, and the measurement results of different operators are different; ⑤ The measurement results cannot be directly connected to the three-dimensional design.

[0004] Based on the above shortcomings, it is possible to consider recording the maximum opening state first and then performing standardized measurements. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the existing opening degree measuring equipment has poor measurement accuracy and the measurement results cannot be directly connected to the three-dimensional design. The purpose is to provide an opening state recording device, a recording method and an opening degree measuring method to solve the above problems.

[0006] The present invention is achieved through the following technical solutions:

[0007] In the first aspect, the present invention provides an open state recording device, including a main body made of an elastic material, the main body having upper and lower surfaces relative to each other, the upper and lower surfaces are both constructed as planes, the two sides of the upper and lower surfaces are respectively connected by a side surface, and the two side surfaces are both constructed as fan rings.

[0008] In a possible design, the main body has a front surface and a back surface opposite to each other, the front surface is connected to the outer arc of the side fan ring, and the back surface is connected to the inner arc of the side fan ring;

[0009] The front surface is provided with a plurality of protruding fitting structures and a plurality of handle holes, the fitting structures are distributed in an array on the front surface, the handle holes are divided into two plug-in groups and are respectively arranged at the upper and lower parts of the front surface, and correspondingly, the handle holes are detachably provided with handles.

[0010] In a possible design, the handle is in a U-shaped structure, and accordingly, each plug-in group includes two handle holes;

[0011] The fitting structure is constructed as a regular structure or an irregular structure, and the regular structure includes at least one of a cross, a sphere, a pyramid, a prism, a cylinder, a truncated cone and a cone.

[0012] In a possible design, a plurality of built-in holes are provided in the main body for increasing the deformation capability of the main body.

[0013] In a second aspect, the present invention provides an opening state recording method, comprising the following steps:

[0014] S100: acquiring dentition data;

[0015] S200: obtaining the maximum opening state;

[0016] S300: data fitting;

[0017] Among them, S100 and S200 can be interchanged in order, S200 obtains the maximum opening state through the opening state recording device, and S300 obtains the relative positions of the upper and lower jaw teeth in the maximum opening state by fitting the data obtained by S100 and S200.

[0018] In one possible design, S100 includes the following steps:

[0019] S110: obtaining scan data of one of the upper and lower jaw dentitions through an intraoral scanner, and recording the scan data as data 1;

[0020] S120: Obtain scanning data of the other of the upper and lower jaw dentitions through an intraoral scanner and record it as data 2.

[0021] In one possible design, S200 includes the following steps:

[0022] S210: inserting a handle into the opening state recording device; compressing the opening state recording device by the handle;

[0023] S220: the oral cavity is opened to the maximum extent; the opening state recording device is placed in the oral cavity; the handle is slowly released, and the opening state recording device rebounds until the upper and lower surfaces of the opening state recording device abut against the incisal ends or occlusal surfaces of the upper and lower jaw dentitions, respectively;

[0024] S230: Obtain the scanning data of the upper and lower dental arches when the contact opening state recording device is acquired by an intraoral scanner, and record it as Data 3.

[0025] In a possible design, in S220, if the degree of oral opening is unstable, or an entity model needs to be established, after the opening state recording device contacts the upper and lower dental arches, inject bite registration silicone rubber on the lingual side of the teeth in contact with the opening state recording device, and wait for 3 - 5 minutes until the bite registration silicone rubber solidifies.

[0026] In a possible design, S300 includes the following steps:

[0027] S310: Select at least three fitting points with the same positions respectively from Data 1 and Data 3, and select at least three fitting points with the same positions respectively from Data 2 and Data 3;

[0028] S320: Fit Data 1 and Data 2 to Data 3 respectively to obtain the relative positions of the upper and lower dental arches in the maximum opening state.

[0029] In a third aspect, the present invention provides an opening degree measurement method based on the above - mentioned opening state recording method, including the following steps:

[0030] S100: Select the center point P1 of the edentulous area in one of the mesiodistal direction and the labiolingual, palatolingual, buccolingual, and buccopalatal directions to obtain the measurement starting point P1;

[0031] S200: Construct a direction indication line L1 with the long axis of the adjacent teeth of the edentulous area, and obtain the direction indication line L2 of the edentulous area based on the direction indication line L1;

[0032] S300: The direction indication line L2 forms an intersection point P2 with the opposing dental arch in the maximum opening state to obtain the measurement end point P2;

[0033] S400: Measure the distance between P1 and P2 to obtain the opening degree D of the surgical area in the maximum opening state;

[0034] Among them, in S200, on the occlusion plane, the direction indication line passes through the lingual or palatal side of the connecting line of the incisal edges of the anterior teeth and passes through the connecting line of the central fossae of the posterior teeth.

[0035] In a possible design, it further includes S500: Assemble the surgical instruments and measure the total height H of the instruments; compare the opening degree D of the surgical area in the maximum opening state with the total height H of the instruments. If D ≥ H, perform the surgery; if D < H, do not perform the surgery.

[0036] In a possible design, it also includes S600: before implementing the open mouth state recording method, use fluid resin or gentian violet to make dot marks on the edentulous area and line marks on the adjacent teeth in the edentulous area. Accordingly, the dot marks are used as the measurement starting points and the line marks are used as direction indicator lines.

[0037] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0038] 1. Under the action of the rebound force, the upper and lower surfaces of the main body of the opening state recording device are in close contact with the upper and lower jaw dentition, which can stably maintain the upper and lower jaw dentition in the maximum opening position; and the arc-shaped structure of the fan ring is consistent with the arc-shaped movement path of the mandible when the patient's mouth opens and closes, and the main body will not protrude too much outside the dentition. During subsequent scanning, it effectively reduces the obstruction to the scanner, so as to obtain scanning data faster and more accurately.

[0039] 2. The opening state recording method is used to obtain the relative positions of the upper and lower jaw dentition in the maximum opening state, thereby realizing three-dimensional modeling. In conjunction with the opening degree measurement method, the opening degree of the patient's mouth can be measured outside the patient's mouth, thereby avoiding the influence of the measuring tools, the patient's dental mucosa, etc. on the measurement results. It can also further determine whether there is any obstruction in the movement path of the three-dimensional structure of the surgical instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0041] Figure 1 It is a structural schematic diagram of the opening state recording device.

[0042] Figure 2 for Figure 1 Schematic diagram of the front structure.

[0043] Figure 3 A schematic diagram of the structure of the handle.

[0044] Figure 4 This is a schematic diagram of the structure of the opening state recording device when the handle is connected to the main body.

[0045] Figure 5 for Figure 1 Schematic diagram of the cross-section structure.

[0046] Figure 6 Schematic diagram of the structure of the upper and lower jaw dentition for the opening state recording device.

[0047] Figure 7 for Figure 6 Schematic diagram of the structure after the handle is removed.

[0048] Figure 8 Schematic diagram of the structure of the upper and lower jaw dentition when the mouth is opened to the maximum extent.

[0049] Fig. 9 A structural schematic diagram for constructing the measurement starting point and direction indication line.

[0050] Fig.10 A schematic diagram of the structure for constructing the measurement end point and measuring the opening degree of the surgical area.

[0051] Marks and corresponding parts names in the attached drawings:

[0052] 1. Main body; 101. Fitting structure; 102. Handle hole; 103. Built-in hole; 2. Handle. DETAILED DESCRIPTION

[0053] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0054] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to one of ordinary skill in the art that these specific details are not necessarily employed to practice the present invention. In other embodiments, in order to avoid obscuring the present invention, well-known structures, circuits, materials, or methods are not specifically described.

[0055] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0056] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0057] Embodiment 1:

[0058] like Figure 1-Figure 7 As shown, the opening state recording device includes a main body 1 made of elastic material, the main body 1 has opposite upper and lower surfaces, the upper and lower surfaces are both constructed as planes, the two sides of the upper and lower surfaces are respectively connected by a side surface, and the two side surfaces are both constructed as fan rings.

[0059] In the opening state recording device, the side of the main body 1 is constructed in a fan-shaped ring, and the fan-shaped ring has a relative outer arc and inner arc, and the arc length of the outer arc is greater than the arc length of the inner arc, so that the thickness of the main body 1 gradually increases from the inner arc end to the outer arc end. Based on this, the inner arc end of the main body 1 is convenient for insertion into the oral cavity, and the position can be adjusted so that the dentition bites the main body 1 at different positions, which is convenient for the doctor to make flexible adjustments according to the patient's condition. The outer arc end of the main body 1 is used to open the patient's mouth so that the patient's mouth is stably at the maximum opening degree. The doctor scans and obtains relevant data for subsequent calculation of the patient's opening degree.

[0060] At the same time, the arc-shaped structure of the fan ring is consistent with the arc-shaped movement path of the mandible when the patient's mouth opens and closes, and the main body 1 does not protrude too much beyond the dentition. During subsequent scanning, the obstruction to the scanner is effectively reduced, so as to obtain scanning data faster and more accurately.

[0061] In addition, the main body 1 is made of an elastic material with elastic deformation ability such as heavy-duty silicone rubber. When the main body 1 is inserted into the oral cavity, the thickness of the main body 1, especially the thickness of the outer arc end, is compressed by external force, so that the main body 1 is easier to be placed in the oral cavity; when measuring the opening state of the patient's mouth, the external force is removed to make the main body 1 rebound, and the upper and lower surfaces of the main body 1 are respectively pressed against the patient's upper and lower jaw teeth, so that the patient's mouth is stably maintained in the maximum opening position; even if the patient bites the main body 1, after the patient removes the force, the main body 1 returns to its original shape, so that the patient's mouth is at the maximum opening degree.

[0062] Compared with existing measuring tools, the opening state recording device can stabilize the patient's mouth at the maximum opening degree, eliminating inaccurate measurement results caused by the instability of the maximum opening state. At the same time, the opening state recording device can be placed at any suitable position in the mouth, eliminating different measurement results caused by different placement positions, and effectively improving the accuracy of the measurement.

[0063] It is easy to understand that the upper and lower surfaces of the main body 1 can be configured into any suitable shape, and the present invention does not impose any limitation on this.

[0064] Preferably, since the average opening ranges of different groups of people are different, the opening state recording device is set with different specifications for doctors to choose. In specific practice, the doctor can visually observe the maximum opening state of the patient and then select the opening state recording device with the appropriate specifications.

[0065] Optionally, based on the chord length of the outer arc of the main body 1, three specifications of the opening state recording device are set with the outer arc chord lengths of 50mm, 40mm and 30mm respectively. It is easy to understand that the outer arc chord length of the opening state recording device can also be set to any other suitable size.

[0066] In a possible implementation, the main body 1 has a front surface and a back surface opposite to each other, the front surface is connected to the outer arc of the fan ring on the side, and the back surface is connected to the inner arc of the fan ring on the side;

[0067] The front surface is provided with a plurality of protruding fitting structures 101 and a plurality of handle holes 102. The fitting structures 101 are distributed in an array on the front surface. The handle holes 102 are divided into two plug-in groups and are respectively arranged at the upper and lower parts of the front surface. Accordingly, a handle 2 is detachably provided on the handle hole 102.

[0068] Based on the above design, the fitting structure 101 is used to cooperate with the intraoral scanner, and the array-type fitting structure 101 is used as a reference to realize rapid positioning and scanning of the intraoral scanner, thereby improving the scanning speed and scanning accuracy of the intraoral scanner. The handle hole 102 is used to connect the main body 1 with the handle 2, which reduces the difficulty for the doctor to compress the thickness of the main body 1 and improves the convenience of using the opening state recording device. And the handle hole 102 realizes a detachable connection, and the handle 2 can be removed after the main body 1 is placed in the mouth to avoid the handle 2 interfering with the work of the intraoral scanner.

[0069] Further, if Figure 2 As shown, the handle hole 102 can overlap with a part of the fitting structure 101, and the functions of the remaining fitting structure 101 are not affected, and will not affect the operation of the intraoral scanner.

[0070] Alternatively, if Figure 3As shown, the handle 2 is in a U-shaped structure, and accordingly, each plug group includes two handle holes 102. Based on this, the closed end of the handle 2 is for the doctor to hold, and the open end of the handle 2 is used to connect to the main body 1.

[0071] Optionally, the fitting structure 101 is constructed as a regular structure or an irregular structure, and the regular structure includes at least one of a cross, a sphere, a pyramid, a prism, a cylinder, a truncated cone, and a cone. It is easy to understand that the irregular structure can be constructed in any suitable shape, including but not limited to a wavy line and a long and short line, which are not listed here. In general, the fitting structure 101 preferably uses a cross shape, which is helpful for data splicing during scanning.

[0072] In a possible implementation, a plurality of built-in holes 103 are provided in the main body 1 for increasing the deformation capacity of the main body 1. Based on the above design, the built-in holes 103 further improve the compression deformation capacity of the main body 1, and reduce the difficulty of the doctor's operation. It is easy to understand that the built-in holes 103 can be constructed in any suitable shape, and the present invention does not impose any limitation on this.

[0073] Embodiment 2:

[0074] like Figure 6-Figure 8 As shown, the opening state recording method comprises the following steps:

[0075] S100: acquiring dentition data;

[0076] S200: obtaining the maximum opening state;

[0077] S300: data fitting;

[0078] Among them, S100 and S200 can be interchanged in order, S200 obtains the maximum opening state through the opening state recording device, and S300 obtains the relative positions of the upper and lower jaw teeth in the maximum opening state by fitting the data obtained by S100 and S200.

[0079] The opening state recording method is used to obtain the relative position of the upper and lower jaw dentition in the maximum opening state, so as to measure the opening degree of the patient's mouth outside the patient's mouth, which replaces the existing measurement method of measuring inside the patient's mouth with measuring tools. On the one hand, it improves the convenience and accuracy of the measurement and avoids the influence of the measuring tools, the patient's dental mucosa, etc. on the measurement results. On the other hand, it realizes three-dimensional modeling and design through scanning, which can not only be used for calculating the opening degree of the patient's mouth, but also for the analysis and diagnosis of other oral problems, thereby maximizing the role of the data.

[0080] In addition, during measurement, the measuring tool will enter the patient's mouth, and it is inevitable that it will touch the teeth, tongue and other parts of the patient's mouth, which can easily cause discomfort to the patient. And because the existing measuring tools have the problem of inaccurate measurement, multiple measurements will be performed during actual use, and the patient's mouth needs to be kept at the maximum opening for a long time, which further increases the patient's discomfort. The opening state recording method cooperates with the opening degree measurement method in Example 3 to achieve the measurement of the opening degree of the patient's mouth outside the patient's mouth, which improves the comfort of the measurement and reduces the time the patient's mouth remains at the maximum opening.

[0081] For the opening state recording method, the data of the upper and lower dentition are obtained through S100, and the relative positions of the upper and lower dentition are also obtained. The maximum opening state data of the patient's mouth is obtained through S200. The data is fitted through S300 to obtain the relative positions of the upper and lower dentition in the maximum opening state. At the same time, three-dimensional modeling is realized, which can further determine whether there is any obstruction in the movement path of the three-dimensional structure of the surgical instrument.

[0082] Furthermore, S100 and S200 are independent of each other, so the order of the two can be swapped, and the doctor can choose according to the actual situation. In S200, when performing intraoral scanning, not only the data of the maximum opening state can be obtained, but also the dentition data can be obtained. However, due to the obstruction of the opening state recording device, the accuracy of the dentition data is relatively low, so it needs to be used in conjunction with the data obtained in S100. S300 can be implemented by any suitable existing fitting software, program or algorithm, and the present invention does not impose any restrictions on this.

[0083] Specifically, in a possible implementation, S100 includes the following steps:

[0084] S110: obtaining scan data of one of the upper and lower jaw dentitions through an intraoral scanner, and recording the scan data as data 1;

[0085] S120: Obtain scanning data of the other of the upper and lower jaw dentitions through an intraoral scanner and record it as data 2.

[0086] Based on the above design, the patient's mouth can be kept at a relatively small opening to improve the patient's comfort. In addition, there is no restriction on the scanning order of the upper and lower jaw dentitions, as long as the data records are not confused.

[0087] In a possible implementation, S200 includes the following steps:

[0088] S210: inserting the handle 2 into the opening state recording device; compressing the opening state recording device by the handle 2;

[0089] S220: the oral cavity is opened to the maximum extent; the opening state recording device is placed in the oral cavity; the handle 2 is slowly released, and the opening state recording device rebounds until the upper and lower surfaces of the opening state recording device abut against the incisal ends or occlusal surfaces of the upper and lower jaw dentitions, respectively;

[0090] S230: Obtain scanning data of the upper and lower jaw dentition when contacting the opening state recording device through the intraoral scanner, and record it as data 3.

[0091] Based on the above design scheme, in S210, the torque is increased by the handle 2 to facilitate the doctor to compress the opening state recording device, and the thickness of the outer arc end of the compressed main body 1 is small. In S220, remember to slowly release the handle 2 to prevent the main body 1 from rebounding quickly and injuring the patient, and to avoid unnecessary medical accidents and conflicts. The doctor can adjust the specific release speed according to the specific situation, and the present invention does not impose any restrictions on this; the opening state recording device is preferably in contact with the front teeth area, that is, the area between the upper and lower canines, for easy scanning. In S230, the intraoral scanner uses the fitting structure 101 on the main body 1 to achieve rapid scanning to minimize the scanning time.

[0092] Optionally, in S220, if the degree of oral opening is not stable enough, or a physical model needs to be established, after the opening state recording device contacts the upper and lower jaw dentition, occlusal silicone rubber is injected on the lingual side of the teeth contacting the opening state recording device, and wait for 3-5 minutes until the occlusal silicone rubber solidifies.

[0093] Based on the above design, after the occlusal silicone rubber solidifies, it can help fix the teeth of the upper and lower jaws, so that the patient's mouth can be stably opened, thereby improving the accuracy of the scan data. At the same time, the solidified occlusal silicone rubber can also be used to make a physical model, and cooperate with the opening state recording device to achieve the reset and reproduction of the maximum opening degree of the patient's mouth, so that the scanning data of S230 can also be performed outside the patient's mouth.

[0094] It is easy to understand that S230 preferably obtains scanning data through an intraoral scanner. If necessary, a physical model can be made by biting silicone rubber, and then the scanning data can be obtained by scanning the physical model with other scanners.

[0095] In a possible implementation, S300 includes the following steps:

[0096] S310: selecting at least three fitting points with the same position from data 1 and data 3 respectively, and selecting at least three fitting points with the same position from data 2 and data 3 respectively;

[0097] S320: Data 1 and data 2 are respectively fitted to data 3 to obtain the relative positions of the upper and lower jaw dentitions in the maximum opening state.

[0098] Based on the above design scheme, in S310, at least three fitting points are selected, and the specific number is selected by the doctor according to the specific situation. In S320, Geomagic Studio or Wrap software is selected to achieve fitting. After three-dimensional modeling, the model is obtained, which can not only be used to measure the degree of opening, but also to further determine whether there is any obstruction in the movement path of the three-dimensional structure of the surgical instrument to confirm whether the operation can be carried out, so as to adjust the medical plan in time, and can also be used for the treatment of other oral problems.

[0099] Embodiment 3:

[0100] After the opening state recording method obtains the model through three-dimensional modeling, the opening degree measurement method calculates the patient's opening degree through the model, providing a clear data reference for whether the operation can be carried out smoothly. For patients who cannot undergo surgery, the medical plan is adjusted in time to achieve timely treatment so that the patient can recover quickly.

[0101] Specifically, if Fig. 9 and Fig.10 As shown, the method for measuring the degree of opening based on the opening state recording method comprises the following steps:

[0102] S100: Select the center point P1 of the edentulous area in the mesiodistal direction and one of the labiolingual, labiopalatal, buccolingual and buccopalatal directions to obtain the measurement starting point P1;

[0103] S200: constructing a direction indicating line L1 based on the long axis of the tooth of the adjacent tooth in the edentulous area, and obtaining a direction indicating line L2 of the edentulous area based on the direction indicating line L1;

[0104] S300: The direction indication line L2 and the opposing dentition in the maximum opening state form an intersection point P2, and the measurement end point P2 is obtained;

[0105] S400: measuring the distance between P1 and P2 to obtain the opening degree D of the surgical area in the maximum opening state;

[0106] Among them, in S200, on the occlusal plane, the direction indicator line passes through the lingual side or palatal side of the line connecting the incisal ends of the anterior teeth and passes through the line connecting the central fossa of the posterior teeth.

[0107] In S100, the gums in the edentulous area occupy a certain space, so the center point of the edentulous area is obtained by drawing auxiliary lines. An auxiliary line is drawn based on the mesiodistal direction. According to the different areas where the teeth are located, another auxiliary line is drawn based on the lips, cheeks, tongue, and palate around the mouth. The intersection of the two auxiliary lines is the center point. However, for different edentulous situations, the doctor needs to calculate based on the specific data to confirm the specific position of the center point.

[0108] In S200, generally, there are two adjacent teeth in the toothless area, so two direction indication lines L1 are made. The two cooperate to obtain the direction indication line L2 to improve the accuracy of the direction indication line L2. In S300, the measurement end point P2 is obtained, and in S400, the measurement can be carried out.

[0109] The measurement starting point P1 is the mapping of the future implant entrance point at the gingival level, and the direction indication line L2 is the long axis of the future implant body. Therefore, the measurement result can more accurately reflect the actual opening degree of the surgical area, which is beneficial to accurately select the surgical instruments of appropriate length.

[0110] In a possible implementation manner, it further includes S500: assembling the surgical instruments and measuring the total height H of the instruments; comparing the opening degree D of the surgical area in the maximum opening state with the total height H of the instruments. If D≥H, the surgery is carried out; if D<H, the surgery is not carried out.

[0111] Based on the above design scheme, when D>H, the height of the instrument used in the surgery is less than the opening degree of the surgical area, so the instrument used in the surgery can be placed into the surgical area along the predetermined path and has a free movement space, and the surgery can be carried out smoothly. When D = H, the height of the instrument used in the surgery is equal to the opening degree of the surgical area, so the instrument used in the surgery can just be placed into the surgical area, but there is no free movement space. That is, when using this instrument to carry out the surgery, it is extremely vulnerable to the obstruction of the opposing dentition. At this time, a surgical instrument of appropriate length can be replaced and then the surgery is carried out. When D<H, the height of the instrument used in the surgery exceeds the opening degree of the surgical area, so the instrument used in the surgery cannot be placed into the surgical area along the predetermined path, that is, the surgery cannot be carried out using this instrument. At this time, the medical plan should be adjusted in time.

[0112] In a possible implementation manner, it further includes S600: before implementing the opening state recording method, using fluid resin or gentian violet to make dot-shaped marks in the toothless area and linear marks on the adjacent teeth of the toothless area. Correspondingly, the dot-shaped mark is used as the measurement starting point, and the linear mark is used as the direction indication line.

[0113] Based on the above design scheme, marks are made in the patient's oral cavity, and the marks are scanned into the three-dimensional model along with the implementation of the opening state recording method. When implementing the opening degree measurement method, the measurement starting point P1 and the direction indication line L2 can be quickly obtained, making the implementation of the opening degree measurement method faster and more convenient.

[0114] For the opening degree measurement method, theoretically, it can calculate and obtain the measurement starting point P1 and the direction indication line L2 respectively after the opening state recording method is completed, that is, the two are implemented separately; or marks can be made before the opening state recording method is implemented to make the two related to each other. Those skilled in the art can choose whether to make marks as needed, with flexible use and good practicability.

[0115] Example 4:

[0116] Based on Examples 1-3, a practical solution is provided:

[0117] The upper and lower surfaces of the opening state recording device are both flat, and the area is 200mm2, which can cover 3-4 teeth. The side outer contour of the main body 1 is fan-shaped, and the chord length corresponding to the outer arc of the fan ring is 40mm; the front surface of the main body 1 is an arc surface, and three-dimensional cross-shaped fitting structures 101 are evenly distributed on the arc surface. A square blind hole is set at each position near the four corners of the arc surface, and the square blind hole is used as a handle hole 102.

[0118] Use fluid resin to make dot marks in the mesial and distal directions and in the center of the edentulous area in the labial and palatal directions, and make linear marks on the position of the long axis of the tooth on the labial surface of the adjacent teeth. Use an intraoral scanner to obtain the scanning data of the maxillary and mandibular dentition, export them in .stl format, and record them as data 1 and data 2, respectively.

[0119] Insert both ends of the U-shaped handle 2 into the handle holes 102 of the main body 1 respectively, press the two U-shaped handles 2 with two fingers respectively, and apply force to compress the main body 1.

[0120] The patient opens his mouth; the doctor places the compressed mouth opening state recording device between the upper and lower jaw teeth that are opened to the maximum extent, slowly releases the handle 2, and the main body 1 rebounds, and its upper and lower surfaces respectively contact the incisal ends of the upper and lower incisor areas (the area between the lateral incisors on both sides).

[0121] Use an intraoral scanner to obtain scan data of the upper and lower teeth in contact with the opening state recording device, export it as .stl data, and record it as data 3.

[0122] Import data 1, data 2, and data 3 into Geomagic Wrap software, select three points in the same position on data 1 and data 3 (such as the cusp apex of the left and right maxillary canines, and the gingival apex of the left or right maxillary central incisor), and fit data 1 to data 3; select three points in the same position on data 2 and data 3 (such as the cusp apex of the left and right mandibular canines, and the gingival apex of the left or right mandibular central incisor), and fit data 2 to data 3; obtain the relative position of the upper and lower jaw dentition in the maximum opening state.

[0123] The maxillary and mandibular dentition data in the maximum opening state were imported into Geomagic Studio, and a feature point was created at the center of the fluid resin dot mark in the maxillary edentulous area, denoted as P1, and P1 was used as the starting point for measurement.

[0124] A straight line feature is created on the linear mark on the labial surface of the adjacent tooth, recorded as the direction indicator line L1, and the direction indicator line L2 is obtained using the direction indicator line L1 as the measurement direction; at the occlusal level, the direction indicator line L2 passes through the palatal side of the line connecting the incisal ends of the anterior teeth.

[0125] The direction indicator line L2 and the mandibular dentition in the maximum opening state form an intersection, which is recorded as P2, and P2 is taken as the measurement end point.

[0126] Measure the distance between P1 and P2, recorded as D, where D is the opening degree of the surgical area in the maximum opening state.

[0127] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An opening state recording device, characterized in that: The main body (1) comprises a main body (1) made of an elastic material, wherein the main body (1) has upper and lower surfaces opposite to each other, the upper and lower surfaces are both constructed as planes, the two sides of the upper and lower surfaces are respectively connected by a side surface, and the two side surfaces are both constructed as fan rings.

2. The opening state recording device according to claim 1, characterized in that: The main body (1) has a front surface and a back surface opposite to each other, the front surface is connected to the outer arc of the fan ring on the side, and the back surface is connected to the inner arc of the fan ring on the side; A plurality of outwardly protruding fitting structures (101) and a plurality of handle holes (102) are provided on the front surface. The fitting structures (101) are distributed in an array on the front surface. The handle holes (102) are divided into two plug-in groups and are respectively arranged at the upper and lower parts of the front surface. Accordingly, a handle (2) is detachably provided on the handle hole (102).

3. The opening state recording device according to claim 2, characterized in that: The handle (2) is in a U-shaped structure, and accordingly, each plug-in group comprises two handle holes (102); The fitting structure (101) is constructed as a regular structure or an irregular structure, and the regular structure includes at least one of a cross, a sphere, a pyramid, a prism, a cylinder, a truncated cone and a cone.

4. The opening state recording device according to any one of claims 1 to 3, characterized in that: A plurality of built-in holes (103) for increasing the deformation capability of the main body (1) are arranged in the main body (1).

5. The method for recording the opening state, characterized in that: The following steps are involved: S100: acquiring dentition data; S200: obtaining the maximum opening state; S300: data fitting; Among them, S100 and S200 can be interchanged in order, S200 obtains the maximum opening state through the opening state recording device described in any one of claims 1-4, and S300 obtains the relative positions of the upper and lower jaw teeth in the maximum opening state by fitting the data obtained by S100 and S200.

6. The method for recording the opening state according to claim 5, characterized in that: S100 includes the following steps: S110: obtaining scan data of one of the upper and lower jaw dentitions through an intraoral scanner, and recording the scan data as data 1; S120: Obtain scanning data of the other of the upper and lower jaw dentitions through an intraoral scanner and record it as data 2.

7. The method for recording the opening state according to claim 6, characterized in that: S200 includes the following steps: S210: inserting the handle (2) into the opening state recording device; compressing the opening state recording device by means of the handle (2); S220: the oral cavity is opened to the maximum extent; the opening state recording device is placed in the oral cavity; the handle (2) is slowly released, and the opening state recording device rebounds until the upper and lower surfaces of the opening state recording device abut against the incisal ends or occlusal surfaces of the upper and lower jaw dentitions respectively; S230: Obtain scanning data of the upper and lower jaw dentition when contacting the opening state recording device through the intraoral scanner and record it as data 3.

8. The method for recording the opening state according to claim 7, characterized in that: In S220, if the degree of oral opening is not stable enough, or a physical model needs to be established, after the opening state recording device contacts the upper and lower jaw dentition, occlusal silicone rubber is injected on the lingual side of the teeth contacting the opening state recording device, and wait for 3-5 minutes until the occlusal silicone rubber solidifies.

9. The method for recording the opening state according to claim 7 or 8, characterized in that: S300 includes the following steps: S310: selecting at least three fitting points with the same position from data 1 and data 3 respectively, and selecting at least three fitting points with the same position from data 2 and data 3 respectively; S320: Data 1 and data 2 are respectively fitted to data 3 to obtain the relative positions of the upper and lower jaw dentitions in the maximum opening state.

10. A method for measuring the degree of opening based on the method for recording the opening state according to any one of claims 5 to 9, characterized in that: The following steps are involved: S100: Select the center point P1 of the edentulous area in one of the mesiodistal direction and the labiolingual, labiopalatal, buccolingual, and buccopalatal directions to obtain the measurement starting point P1; S200: Construct a direction indication line L1 based on the long axis of the adjacent tooth in the edentulous area, and obtain the direction indication line L2 of the edentulous area based on the direction indication line L1; S300: The direction indication line L2 forms an intersection point P2 with the opposing dentition in the maximum opening state to obtain the measurement end point P2; S400: Measure the distance between P1 and P2 to obtain the opening degree D of the surgical area in the maximum opening state; Among them, in S200, on the occlusal plane, the direction indication line passes through from the lingual or palatal side of the incisal edge connection line of the anterior teeth and passes through on the central fossa connection line of the posterior teeth.

11. The method for measuring the degree of mouth opening according to claim 10, characterized in that: It also includes S500: Assemble the surgical instrument and measure the total height H of the instrument; Compare the opening degree D of the surgical area in the maximum opening state with the total height H of the instrument. If D≥H, perform the surgery. If D<H, do not perform the surgery.

12. The method for measuring the degree of mouth opening according to claim 11, characterized in that: It also includes S600: Before implementing the opening state recording method, use fluid resin or gentian violet to make dot-shaped marks in the edentulous area and linear marks on the adjacent teeth of the edentulous area. Correspondingly, use the dot-shaped marks as the measurement starting point and the linear marks as the direction indication line.

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