74 results about "Alveolar ridge" patented technology

The invention relates to the technical field of information, and particularly provides a complete denture arrangement virtual simulation method and system, and the method comprises the steps: obtaining the medical record data of a user; the medical record data comprises edentulous jaw soft and hard tissue data, jaw bone data, alveolar ridge morphological parameters, jaw position relation data and facial feature data; determining an initial dental arch curve based on the medical record data; inputting the initial dental arch curve and preset aesthetic parameters into a preset deep learning model to obtain a plurality of initial tooth arrangement schemes; screening the plurality of initial tooth arrangement schemes according to tooth arrangement constraint conditions to obtain tooth arrangement schemes meeting constraints; the tooth position and angle of each tooth arrangement scheme meeting the constraint are adjusted until the preset occlusion balance condition is met, and the first tooth arrangement scheme is obtained, so that the tooth arrangement scheme efficiency of the complete dentures can be improved on the premise that the quality of the tooth arrangement scheme of the complete dentures is guaranteed.

The present dental prosthesis has a palatal implant configured to be implanted subperiosteally and attached to the palatal process by a plurality of fixation screws. The implant has a spine retaining implant magnetic components therealong and having holes for the fixation screws. The prosthesis also has a maxilla denture having a palatal base plate and an alveolar ridge engaging periphery having false teeth installed thereon. The denture is configured to be placed in a mouth to engage a maxilla wherein the alveolar ridge engaging periphery engages an alveolar ridge of the maxilla. The denture comprises a plurality of denture magnetic components configured to align with the implant magnetic components so that the denture is magnetically retained in the mouth by magnetic attraction force between the implant magnetic components and the denture magnetic components.

The invention relates to an ideal arch line generation method based on AI alveolar bone grid segmentation. The method comprises the following steps: acquiring an alveolar bone region of interest according to a CT alveolar bone complete model; performing boundary smoothing processing on the alveolar bone region of interest; constructing a coordinate system, and transferring the coordinate system to a standard coordinate system; solving a point set representing the overall skeleton trend and fitting the point set into a B spline curve L1; n points are sampled on the L1 at equal intervals, cross sections are made, cross section intersection line centroids are obtained and arranged in sequence, and the centroids are recorded as L2; connecting a vector by taking the point on the L1 as a starting point and the point on the L2 as an ending point, solving intersection points of a straight line where the vector is located and the grid of the region of interest, arranging the intersection points according to the same sequence as the points on the L1 and the L2, and recording the intersection points as L3; and establishing an ideal dental arch line attached to the alveolar ridge crest according to the L3. According to the invention, when the alveolar arch line passes through each tooth hole, the Spee curvature is more suitable for the growth trend of the real alveolar bone of a patient, the compression force on the tooth root in the correction process is reduced as much as possible, and a safer and more reliable correction scheme is provided for the patient.

The utility model discloses an oral implant which comprises a bone surface supporting structure, the appearance of the bone surface supporting structure is attached to an upper jaw alveolar bone surface or a lower jaw alveolar bone surface, and a net-shaped through hole is formed in the bone surface supporting structure and corresponds to the alveolar bone surface; a plurality of base tables protruding out of the surface are arranged on the surface of one side of the bone surface supporting structure, and the base tables are used for fixedly connecting the oral implant with a prosthesis; one end, connected to the bone surface supporting structure, of the abutment is provided with an intraosseous implant implanted into the jaw bone. According to the utility model, the traditional subperiosteal implant is improved, the subperiosteal implant is designed in the area with insufficient bone mass of the jaw bone, and the novel stent-shaped implant is formed by combining the subperiosteal implant with the intraosseous implant in the area with sufficient bone mass of the jaw bone, so that independent bone increment operation is not needed, and the implant can be implanted only by one operation; and the clinical problem that a patient with serious atrophy of the alveolar ridge is difficult to implant and repair is effectively solved.

A subperiosteal jaw implant 100 comprising an annular baseplate 102 anatomically contoured for attachment over the alveolar ridge of a mandible or maxilla bone. The implant comprises one or more suppo

The present invention discloses an implant printing system based on 3D printing technology, belonging to the technical field of dental implants. The system includes a data acquisition module, a dynamic modeling module, and an execution module. Communication connections are established among the data acquisition module, the dynamic modeling module, and the execution module. The dynamic modeling module includes a reconstruction unit and an adjustment unit. The reconstruction unit is used to reversely reconstruct the original alveolar ridge three-dimensional model according to the three-dimensional scanning unit; the adjustment unit is used to repair the original alveolar ridge three-dimensional model, simulate the stress distribution after implant implantation in the repaired original alveolar ridge three-dimensional model, and automatically adjust the parameters of the implant in combination with the dynamic bite force distribution, generate a complete implant three-dimensional image, and transmit the implant parameters and the complete implant three-dimensional image to the execution module. The present invention dynamically models the alveolar bone density and bite force distribution of the patient to ensure that the mechanical properties of the implant match the physiological requirements.

The utility model provides an immediate implant denture of a drop-shaped artificial tooth, the immediate implant denture consists of a base plate and a dentition fixedly embedded on the base plate, the dentition consists of a plurality of plastic artificial teeth, cheek side necks of the plastic artificial teeth are inwards retracted, and cover ridge parts close to alveolar ridge crests are drop-shaped. The included angle between the connecting line of the high point of the appearance of the plastic artificial tooth and the central point of the neck and the long axis of the tooth body is 30-40 degrees; and the width range of the dentures positioned on the inner side and the outer side of the central point of the neck part of the plastic artificial tooth covering the alveolar ridge crest is 2-4mm. According to the requirement of the implant immediate denture in the manufacturing process, the cheek-side neck of the plastic artificial tooth is designed to be retracted inwards, so that the coverage area of the bottom of the implant immediate denture and the alveolar ridge crest is convenient to form a water drop shape, the contact area with the alveolar ridge crest is reduced as far as possible, the probability of food impaction is reduced, and the implant immediate denture is convenient to clean; therefore, a good self-cleaning effect is formed, a good oral environment of a patient can be maintained, and formation of bacteria and plaque is reduced.

An electroactive titanium support-reinforced composite film includes a titanium support and a film material coating the titanium support. The titanium support has a structure designed according to securing sites. The electroactive titanium support-reinforced composite film of the present invention can be bent and shaped for a close fit with a hard tissue, has excellent mechanical performance and a stable electroactive bending strength of bionic magnitude, and can prevent the collapse of surrounding tissues and tissue adhesion, effectively maintain a three-dimensional space for bone osteanagenesis and effectively promote bone injury healing, featuring ease and convenience of clinical operation and capability of promoting bone marrow mesenchymal stem cell adhesion, cytoskeleton rearrangement and induced osteogenic differentiation. The support-reinforced composite film is suitable for mandible or cranium injury repair in different ranges and has significant efficacy for clinical indications such as alveolar bone vertical bone augmentation and alveolar ridge preservation after tooth extraction.

The utility model relates to the technical field of oral medicine, in particular to a comprehensive tooth adjusting and grinding training model which comprises an upper jaw and a lower jaw, the upper jaw comprises an upper tooth socket, upper teeth are installed on the upper tooth socket, the lower jaw comprises a lower tooth socket, and lower teeth are installed on the lower tooth socket. Tooth socket pits which are consistent with the tooth roots of the corresponding teeth in shape and size are formed in the corresponding tooth positions of the upper tooth socket and the lower tooth socket, and a through hole through which the upper tooth and the lower tooth can be conveniently detached is formed in the bottom of each tooth socket pit.

The invention discloses a posterior tooth arrangement method and device based on measurement of an alveolar ridge intercrest line angle and a medium. The method comprises the following steps: acquiring an occlusion record of a patient; according to the occlusion record of the patient, establishing an upper and lower jaw edentulous jaw three-dimensional model of the patient; determining an occlusal plane of the three-dimensional model, and performing preliminary tooth arrangement on the three-dimensional model according to the occlusal plane; carrying out alveolar ridge intercrest line angle measurement on the three-dimensional model after preliminary tooth arrangement; and modifying the three-dimensional model after preliminary tooth arrangement based on an alveolar ridge intercrest line angle measurement result to obtain a posterior tooth arrangement scheme. According to the method, the included angle between the connecting line of the upper and lower jaw alveolar ridges and the occlusal plane is used as a basis for judging the arrangement mode of the back teeth, three-dimensional reconstruction is carried out on the oral cavity of the patient, digital measurement of the alveolar ridge intercrest line angle of the patient is completed in a computer, and the generated arrangement scheme of the back teeth can recover the relation between the upper and lower jaws of the patient more reasonably; the retention, the stability and the chewing performance of false tooth wearing are improved.

The utility model relates to the technical field of medical instruments, in particular to an alveolar ridge crest mucosa double-edged knife which comprises a double-edged blade, the double-edged blade comprises a cutting portion and a mounting portion, the cutting portion is of a V-shaped structure, double edges are located on the two sides of the V shape, and the included angle of the V shape ranges from 20 degrees to 30 degrees. A stepped hole used for being installed on the handle is formed in the installation portion of the double-edge blade, a clamping portion is further arranged on the double-edge blade, the clamping portion is located in the area between the V-shaped structure of the double-edge blade and the stepped hole, and the clamping portion is used for being matched with clamping pliers to achieve disassembly and assembly. When the blade is used for intraoral cutting, cutting, picking and other actions can be adopted at the same time, repeated cutting is not needed to act on the two sides of a mucous membrane, operation efficiency can be improved, finer and more uniform cutting can be achieved, and the technical problems that an existing single-edge cutting knife is limited in flexibility in use and needs repeated cutting are solved.

A non-crestal dental implant system includes at least one dental implant having a proximal end and a distal end; the implant configured to be inserted by way of a non-crestal approach into a mandible or maxilla from a specific zone originating in either the buccal side or lingual side of a mandible or either the buccal side or palatal side of a maxilla towards a termination point in a specific zone in a mandible or maxilla via an omnidirectional pathway which does not go through or contact the crest of the ridge, which thereby utilizes otherwise non-usable bone to secure at least one dental implant; and at least one retentive element having a proximal end for attaching to the dental implant and a distal end configured for the attachment of a dental prosthesis. A method for patient diagnosis and treatment with the system is also included.

The invention relates to a method for measuring an alveolar bone of a missing tooth, which comprises the following steps of: a, controlling a sagittal axis to coincide with a central connecting line of cross sections of two adjacent teeth of the missing tooth on an axial plane, controlling a vertical axis to coincide with a connecting line of adjacent glaze cementum boundaries of the adjacent teeth on a sagittal plane, and controlling the sagittal axis to coincide with a tooth long axis of the adjacent teeth on a coronal plane, the coronal axis is controlled to coincide with the perpendicular line of the midpoint of the connecting line of the glaze cementum boundary of the adjacent tooth on the axial surface or the sagittal surface, the obtained coronal plane is determined as a measuring plane, and the sagittal axis, the perpendicular axis and the coronal axis are always kept in a mutually perpendicular state; and b, obtaining the width and height of the alveolar ridge of the missing tooth based on the measurement plane in the step a. The method for measuring the alveolar bone of the missing tooth has the advantages of being accurate in fixed point, small in measurement result difference, good in stability and high in repeatability.

A laser positioning device for dental occlusal centers, belonging to the field of denture manufacturing technology, addresses the problems of cumbersome operation and low efficiency associated with using an occlusal center measuring ruler to locate occlusal contact points. It includes a base platform, an optical axis vertically fixed to the base platform via a locking seat, a lower bracket slidably mounted on the optical axis, a first elongated hole along the length of the lower bracket, and a second elongated hole along the length of the upper bracket. A locking screw passes through both the first and second elongated holes and connects to a back nut. A laser emitter is vertically fixed to the upper bracket. This invention uses a laser emitter to project a fine laser spot downwards, which is used to position the tooth at a preset alveolar ridge. The center of the tooth can be found visually based on the laser spot, eliminating the need to move the pointer as required by using an occlusal center measuring ruler, thus greatly improving the efficiency of denture fabrication and adjustment.

The utility model relates to the technical field of medical instruments, in particular to a combined guide plate for oral implant surgery. The combined guide plate for the oral implanting operation comprises an operation guide plate and a guide plate base, the operation guide plate is detachably connected with the guide plate base, and the operation guide plate comprises an implantation guide plate; at least one planting sleeve is arranged on the planting guide plate, a flow channel is arranged in the planting guide plate, the flow channel is provided with an inlet end and at least one outlet end, the inlet end is used for introducing cooling liquid, and the outlet end is positioned at the lower end of the planting sleeve and is in one-to-one correspondence with the planting sleeve. The flow channel is provided with an inlet end and at least one outlet end, cooling liquid is injected into the inlet end, sent to the outlet end through the flow channel and sprayed to the contact position of the drill point and the alveolar ridge crest from the lower portion of the planting sleeve, the cooling liquid can bypass blocking of the planting guide plate and accurately and directly reach the position needing to be cooled, and the cooling effect of the drill point is improved.

The utility model provides a complete denture and relates to the technical field of complete dentures. Comprising bases which are arranged in pairs and installed on an alveolar ridge, the opposite end faces of the two bases are both provided with artificial dentitions which are matched with each other, each artificial dentition is composed of a plurality of tooth units, the two ends of one base are both provided with an installation body, and a rotating body is rotationally arranged on each installation body; locking holes matched with the rotating bodies are formed in the two ends of the other base plate; a telescopic part is arranged at the end part of the rotating body; the axis of the rotating body is coaxial with the axis of the locking hole; the telescopic part extends into the locking hole along the axis of the rotating body, and a locking piece for locking the telescopic part is arranged in the locking hole. The two separated base plates are connected into a whole by utilizing the mutual matching of the mounting body and the rotating body and the locking of the telescopic part by the locking piece, so that the integrity of the two base plates in the oral cavity of a user is improved, the mutual dislocation of the two base plates is avoided, the occlusion precision of the complete denture is improved, and the convenience of connecting the two base plates is improved.

The utility model belongs to the technical field of medical instruments, in particular to an oral implant positioner with an alveolar ridge bone morphology measuring function, which comprises a shell, a fixing rod and a first bearing, the fixing rod is fixedly mounted in the shell, the first bearing is fixedly mounted on the left side of the fixing rod, and the first bearing is fixedly mounted on the right side of the fixing rod. A threaded rod is movably installed on the upper side of the first bearing, a movable rod is movably installed on the outer side of the threaded rod, an implantation positioner is generally used in the existing tooth repairing and implanting process, a planter needs to be used for measurement in the oral cavity before implantation, the alveolar ridge bone morphology cannot be measured, and in the measuring process, the implantation positioner is not used for positioning the tooth. In order to solve the problems that a patient needs to continuously open teeth, the continuous action may cause discomfort of the patient and reduce the use comfort, and some patients may suddenly close the teeth and bring inconvenience to oral implantation, the utility model provides an oral implantation positioner with an alveolar ridge bone morphology measurement function.

The pair of wisdom tooth dislocation pliers comprises a left pliers body and a right pliers body, the front portion of the left pliers body is hinged to the front portion of the right pliers body, a right pliers mouth is arranged on the front portion of the left pliers body, a left pliers mouth is arranged on the front portion of the left pliers body, and the left pliers mouth and the right pliers mouth obliquely extend downwards from back to front. A double-wedge-shaped through groove is formed by the right side of the left clamp beak and the left side of the right clamp beak, a left clamp beak tip is arranged at the end of the left clamp beak, a right clamp beak tip corresponding to the left clamp beak tip is arranged at the end of the right clamp beak, and concave portions are arranged on the right side of the left clamp beak and the left side of the right clamp beak. The tooth extraction device is simple in structure, has double wedge-shaped working ends, can bypass adjacent teeth to enter a mesial gap between an alveolar ridge crest and a target tooth during use, uses a fulcrum of the alveolar ridge crest to apply force to dislocate the target tooth, effectively avoids damage to the adjacent teeth, efficiently realizes extraction of high-resistance normal wisdom teeth and residual roots and crowns, effectively reduces tooth extraction difficulty, reduces tooth extraction wound, and is good in consumer experience.

The invention provides a correcting device and a correcting assembly. The appliance comprises an arch-shaped body, the arch-shaped body is provided with a tooth socket and a notch, the tooth socket is used for containing teeth, the arch-shaped body comprises an occlusal pad and an outer baffle, the outer baffle is connected to the outer side of the occlusal pad, the occlusal pad forms the bottom wall of the tooth socket, the outer baffle forms the side wall of the tooth socket, the outer baffle is provided with the notch, and the notch is communicated with the tooth socket; the hooking bodies are arranged on the side, away from the tooth groove, of the outer baffle in a protruding mode, the hooking bodies comprise the first hooking body and the second hooking body, the first hooking body and the second hooking body are arranged on the two sides of the notch in the extending direction of the arch-shaped body, and the first hooking body and the second hooking body are used for being matched with the elastic rope and the tongue side buckle to pull two adjacent teeth respectively. And the two teeth are gradually pulled open, so that a gap opening process is realized. In addition, the hanging body is only of a convex structure on the appliance, and compared with a push spring in the prior art, the hanging body is simpler to use and easier to clean.

The utility model relates to the field of alveolar ridge operation tools, in particular to a miniature distraction type distraction device with an alveolar ridge widened in the horizontal direction, and adopts the technical scheme that the miniature distraction type distraction device with the alveolar ridge widened in the horizontal direction comprises a distraction bolt, a fixing plate and a distraction plate, according to the distraction device for the alveolar bone, the distraction bolt is screwed into the screw groove in the fixing plate in a threaded mode, a doctor can conveniently screw the distraction bolt to expand a split gap of the alveolar bone so as to achieve the purpose of bone distraction, and the distraction device for the alveolar bone has the advantages that the distraction bolt is screwed into the screw groove in the fixing plate in a threaded mode, so that the distraction effect is good, and the distraction effect is good. After the alveolar bone reaches the expanding thickness, the position of the bolt is kept, so that the bone is gradually formed in the gap, and then the fixing plate and the expanding plate are in rigid contact with the alveolar bone and the split gap and are firmly fixed, so that unstable bone stretching, retraction after expanding and the like are prevented, and the device is gentle to operate, small in force and free of excessive pain.

The invention discloses a digital evaluation system for an alveolar bone morphological structure, a computing device and a storage medium, and the system comprises a data preprocessing module which is used for obtaining three-dimensional image data obtained by carrying out CT or nuclear magnetic resonance examination on teeth and alveolar bones around the teeth, and completing the conversion and standardization of the three-dimensional image data; the quadrant division module is used for determining a space coordinate system constructed by taking a tooth as a central point and a tooth long axis as a central axis according to the three-dimensional image data, and dividing a plurality of quadrants according to an occlusal surface of the tooth; and the alveolar bone evaluation module is used for evaluating the overall form or structure of the alveolar bone (such as the defect state of the alveolar crest and / or the side wall of the alveolar bone) according to each quadrant. The scheme has the advantages of simplicity and convenience in operation, accuracy in evaluation, intuitive result and the like, and has wide application prospects in the field of oral medicine.

The present invention relates to a method for measuring the distance between the cementoenamel junction and the alveolar ridge crest based on oral medical images, comprising: S1. Obtaining the optimal observation plane from historical CBCT images, outlining the contours of all teeth, and obtaining the first training set; S2. Training a dental arch segmentation model according to the first training set; S3. Obtaining the contour of each tooth from the optimal observation plane, calculating the central position of each tooth and the angle of the maximum buccolingual cross-section; S4. Obtaining the maximum buccolingual cross-section of each tooth in the historical CBCT images, and marking the position information of the cementoenamel junction and the alveolar ridge crest as the second training set; S5. Training a feature point detection model according to the second training set, and obtaining the position information of the cementoenamel junction and the alveolar ridge crest in the patient's CBCT image; S6. Calculating the bone dehiscence spacing value, and determining whether it is greater than the spacing threshold. If so, a prompt message indicating the presence of bone dehiscence symptoms is output. Compared with the prior art, the present invention has the advantages of improving the diagnosis efficiency of bone dehiscence, etc.

The present invention discloses a combined guide plate for removable denture abutment preparation and implant placement and a manufacturing method thereof. The manufacturing steps include: obtaining a dental arch and alveolar ridge model, and then performing digital scanning on the dental arch, alveolar ridge model, and the oral cavity of the dental arch to obtain a digital model; matching the digital model with the three-dimensional reconstructed alveolar bone model taken by the patient's CBCT to obtain a three-dimensional model of the removable denture base; analyzing and determining the insertion path of the removable denture for the three-dimensional model of the removable denture base, and then manufacturing abutment holes, a guide rod for removable denture abutment preparation, and an implant placement guide ring to obtain a three-dimensional model of the combined guide plate; generating the three-dimensional model of the combined guide plate by a computer and performing 3D resin printing to obtain the combined guide plate for removable denture abutment preparation and implant placement. The combined guide plate prepared by the present invention has the advantages of reducing wear between implant components, enabling the smooth passive insertion and removal of the RPD, slowing down the absorption of the marginal alveolar ridge, and ensuring the service life of the implant during use.

The present application relates to the technical field of oral cavity medical instruments, in particular to an oral implant and application, characterized in that the oral implant comprises an implant body and a transverse locking structure, the implant body comprises a connecting part at the coronal side and a wedge part at the root side, the upper end of the wedge part is integrally connected with the connecting part, the wedge part is provided as a plate-shaped structure, the wedge part is used for wedging into the alveolar ridge to realize guiding and positioning, the connecting part is used for connecting with the upper prosthesis, the transverse locking structure comprises a transverse channel provided on the implant body, the transverse channel penetrates through the wedge part or the joint area of the connecting part and the wedge part, is used for transversely penetrating the fixing part, and realizes locking of the implant body and the jaw bone, the oral implant is used for tooth implantation of human bodies or animals, has the advantages of simple structure, high success rate, low risk, and the like, and can adapt to different alveolar bone conditions.

The present invention provides a two-dimensional maxillary molar movement device, which relates to the field of orthodontic instruments. The two-dimensional maxillary molar movement device includes left and right retention components and a force application component. The left and right retention components are respectively arranged on the left and right sides of the median palatal suture, and the force application component is connected to the left and right retention components. Each retention component includes a metal crown sleeved on the first molar and a retention plate with a transverse groove in the middle. The metal crown and the retention plate are arranged on the same side of the median palatal suture and are connected by a wire. A mini-implant sleeve is connected to the buccal side of the metal crown corresponding to the maxillary zygomaticoalveolar crest. Force application component mounting holes are respectively arranged at the sagittal ends of the retention plate. In the present invention, the retention component can be closely attached to the palatal mucosa to the greatest extent, and the mini-implant can be implanted into the bone to the greatest extent, reducing the risk of failure during the force application process of the mini-implant. Moreover, during the orthodontic treatment, sufficient transverse width change of the maxilla can be achieved without removing the mini-implant.

A kind of degradable metal barrier film for alveolar ridge preservation, made of degradable metal, the degradable metal is magnesium-based or zinc-based or molybdenum-based degradable metal material;The degradable metal barrier film is in film or in net shape, the metal barrier film is flat structure or in arched structure.The degradable metal barrier film for alveolar ridge preservation of the application, the degradable metal system (magnesium-based / zinc-based / molybdenum-based) is applied to oral site preservation for the first time, realizes the integration of the triple function of "mechanical support, biodegradation, biological activity".The degradable metal barrier film can be used as the preparation of medical devices for alveolar ridge preservation.

The invention discloses a maxillary osteotomy positioning and fixing suite, and relates to the technical field of oral maxillofacial surgery orthognathic surgery, the maxillary osteotomy positioning and fixing suite comprises two osteotomy guide plates, an occlusal plate and a plurality of titanium battens, one end of each osteotomy guide plate is used for being clamped with a piriform nest, the other end of each osteotomy guide plate is used for being clamped with a zygomatic alveolar ridge, and the osteotomy guide plates are provided with a plurality of first nail holes; the first nail holes correspond to reserved nail holes of the maxillary bone so that the titanium nails can penetrate through the first nail holes and enter the reserved nail holes to fix the osteotomy guide plate in an operation area, the osteotomy guide plate is provided with an osteotomy groove, and the osteotomy groove is used for osteotomy operation to complete osteotomy and dissection of the maxillary bone; the biteplate is placed between the occlusal surfaces of the upper jaw and the lower jaw so as to guide the primary restoration of the osteotomy block; a plurality of second nail holes are formed in the titanium batten, and the second nail holes correspond to the reserved nail holes so that the titanium nails can penetrate through the second nail holes and enter the reserved nail holes to complete final reduction of the maxilla and fixation of the osteotomy block. The device is simple in structure and convenient to use, effectively reduces operation time and injury, and effectively improves operation efficiency.

The present invention relates to the field of oral implant surgery technology, and specifically to a bone-supported double-ring implant surgical guide, which includes a bone-supported window guide and a double-ring implant guide. The bone-supported window guide is provided with a first window, and a plurality of first retaining nail rings are arranged on the bone-supported window guide. The first retaining nail ring is embedded with a metal ring, and a retaining nail hole is arranged at the bottom of the metal ring; a second window is provided on the double-ring implant guide, and a zygomatic ring is arranged around the second window. The double-ring implant guide is connected with an alveolar ridge top ring, and a plurality of second retaining nail rings are arranged on the double-ring implant guide, and a retaining nail hole is arranged at the bottom of the second retaining nail ring. The use of the guide has the advantages of high positioning accuracy, long dental drill restraint length, no swinging and side sliding during implant hole preparation, and high implant hole preparation accuracy.

An electrospinning apparatus and method for producing three-dimensional electrospun constructs is disclosed. Further, electrospinning apparatus and method 3D electrospun collagen based mineralized nanofibrous scaffold for alveolar ridge preservation prior to dental implant therapy are disclosed.

The present invention relates to a percutaneous dental device comprising a soft tissue region having at least two different surface regions, the at least two surface regions having different isotropic surface topographies, forming an in situ CEJ (iCEJ) at their interface, for improved soft tissue healing and / or soft tissue regeneration of alveolar crest epithelium and connective tissue on alveolar crest at a device placement site. The present invention discloses a novel dental device that mimics a natural tooth surface in a portion of the device in direct contact with upper and lower soft tissues of a tooth in situ CEJ (iCEJ) to guide and induce soft tissue healing and / or regeneration around the dental device after implantation or placement.