215 results about "Anterior tooth" patented technology

The invention relates to the technical field of oral medical instruments, and particularly provides a customized joint jaw position appliance and a manufacturing method thereof.The customized joint jaw position appliance comprises an appliance body, the appliance body comprises an upper jaw tooth occlusion sleeve and a lower jaw tooth occlusion sleeve, and a first occlusal surface of the upper jaw tooth occlusion sleeve is effectively occluded with a second occlusal surface of the lower jaw tooth occlusion sleeve; the guide inclined surface is arranged on the inner side of the anterior tooth area of the appliance body; the upper jaw blocking body and the lower jaw blocking body are respectively arranged on an occlusal surface, a cheek side surface or a lingual side surface of a premolar region on two sides of the upper jaw tooth occlusal sleeve and the lower jaw tooth occlusal sleeve; the upper jaw blocking table and the lower jaw blocking table are respectively arranged on the occlusal surface, the cheek side surface or the tongue side surface of the molar areas on the two sides of the upper jaw tooth occlusal sleeve and the lower jaw tooth occlusal sleeve, and are integrally connected with the appliance body to form a first occlusal surface and a second occlusal surface. According to the customized joint jaw position appliance, the disc-condylar relationship can be more accurately recovered according to the displacement condition of the joint disc of a patient through double-jaw coordination and multi-region blocking design, the treatment period is shortened, and the prognosis stability is improved by matching with a chewing function.

The invention relates to an occlusion guide plate designing and manufacturing method based on dentition mechanical analysis, which comprises the following steps: S1, acquiring oral cavity image data of a patient, and constructing a three-dimensional digital model comprising a dental crown, a tooth root and an alveolar bone structure; s2, calculating an overall mechanical reference point of a tooth root structure of an anterior maxillary tooth area; s3, acquiring an incisal edge midpoint of each incisal tooth and a cusp point of each canine tooth in the maxillary anterior tooth area, solving a geometric center, and connecting the geometric center with an overall mechanical reference point to form a dentition direction vector; s4, calculating the displacement relationship between the target dentition arrangement and the initial dentition arrangement in the lip-tongue direction; s5, calculating an included angle between the occlusal force direction of the maxillary anterior tooth area and the dentition direction vector; s6, determining key morphological parameters of the occlusion guide plate according to the calculation result of the included angle in S5; and S7, manufacturing the occlusion guide plate. Compared with the prior art, the method has the advantages of precise mechanical adaptation, quantitative treatment prediction, personalized design and the like.

The invention discloses a digital stable jaw pad designing and manufacturing method, and relates to the technical field of oral rehabilitation and digital medical technology.The digital stable jaw pad manufacturing method comprises the following steps that a, three-dimensional point cloud data of oral dentition and mucosa of a patient is obtained through a three-dimensional scanner; b) determining a stable jaw position coordinate model by using an optical motion capture system; c) designing a jaw pad three-dimensional entity model with an anterior tooth area, a posterior tooth area and an edge structure based on the three-dimensional point cloud data and the stable jaw coordinate model; and d) manufacturing the jaw pad through 3D printing equipment, wherein the 3D printing equipment is formed by adopting a polyether-ether-ketone material. By integrating digital acquisition, design and manufacturing technologies, the pain point of a traditional method is solved, and personalized, high-precision and rapid manufacturing of the stable jaw pad is realized.

The invention provides an auxiliary tooth separation method and system for minimally invasive tooth extraction, and relates to the technical field of digital surgery in stomatology. According to the method, the oral anatomy three-dimensional electronic model is obtained by performing deep learning segmentation and three-dimensional reconstruction on the preoperative CBCT image, and the real-time spatial position and posture of the jaw bone are updated in combination with laser oral scanning of the preoperative anterior tooth area. On the basis, a three-dimensional simulation model is constructed, tooth division cutting path planning, interference judgment and dislocation space analysis are completed, precise tooth division cutting is implemented by a three-way mechanical arm along the planned path, and the safe and controllable automatic tooth extraction and tooth division process is completed in cooperation with water cooling and real-time track correction.

The invention relates to the field of orthodontics, in particular to a device for controlling palatal root movement of anterior teeth of an upper jaw and a manufacturing method. According to the device, the traction arm and the traction ring which extend to the palatal side of the anterior maxillary teeth are additionally arranged on the basis of the transverse palatal bar and are matched with the traction buckle of the anterior maxillary teeth to guide orthodontic force to act below a tooth impedance center, so that root control movement which is difficult to achieve by a traditional orthodontic method is realized, bending torque on an arch wire or placing other root control devices is not needed, and the whole device is simpler and more attractive; in addition, the device part is manufactured by adopting a 3D printing technology, firstly, tooth and intraoral soft tissue data of a patient are obtained by scanning the interior of an oral cavity, then the oral scanning data are matched with CBCT, a specific device is designed by using software, finally, a finished product is directly printed in a 3D manner, the transverse palatal bar and the traction buckle are completely matched with the tooth surface by adopting the 3D printing technology, and the comfort level is high.

The utility model discloses a dental component which comprises a first matching structure arranged corresponding to the tongue side or the cutting end of anterior teeth of an upper jaw and a second matching structure arranged corresponding to the lip side or the cutting end of anterior teeth of a lower jaw, and the first matching structure and the second matching structure are configured as follows: when the upper jaw and the lower jaw are occluded, the first matching structure is matched with the second matching structure; the first matching structure and the second matching structure abut against each other to generate force or moment, and the force or moment at least comprises lip tilting force corresponding to the anterior teeth of the upper jaw or lip tilting moment corresponding to the anterior teeth of the upper jaw. In the correction process, at least the maxillary anterior teeth generate lip inclination, firstly, the relative positions of the maxillary anterior teeth and the alveolar bone can be gradually adjusted, so that the maxillary anterior teeth are suitable for being pressed down; on the second aspect, the gap between the upper jaw anterior teeth and the lower jaw anterior teeth can be enlarged so that the first matching structure and the second matching structure can be conveniently installed and designed; and thirdly, the anterior teeth of the upper jaw have certain inclination, so that the anterior teeth of the lower jaw can interact with the anterior teeth of the lower jaw conveniently, and the anterior teeth can be depressed, adducted and the like conveniently.

The invention relates to the technical field of oral abutment three-dimensional modeling, and discloses a method for optimizing oral abutment three-dimensional modeling by utilizing a machine learning algorithm, which comprises the following steps of: 1, acquiring detection data of an oral cavity of a patient and a three-dimensional size of an implant, and classifying to form a data set; 2, analyzing the crowding degree and occlusal force distribution state of the teeth of the patient, and generating a crowding ratio and a distribution index; 3, analyzing the inclination of anterior teeth of the patient, evaluating the occlusion relationship of the teeth of the patient, and setting a conversion coefficient for converting the three-dimensional size of the implant into the three-dimensional size of the oral abutment; 4, the three-dimensional size of the oral cavity abutment is simulated, an abutment data set is generated, and the personalized adaptation capacity is high; and step 5, constructing an oral cavity three-dimensional model, an implant three-dimensional model and an oral cavity abutment three-dimensional model of the patient, setting a fixed threshold value, evaluating the fitness of the oral cavity abutment three-dimensional model, and outputting optimization suggestions, and the comfort level of optimization modeling is high.

The invention belongs to the field of dental restoration digitalization, and particularly relates to an anterior tooth layered resin filling restoration method based on the guidance of a digital guide plate. Comprising the following steps: S1, obtaining a three-dimensional digital model of an abutment tooth preparation body; s2, generating a digital model of the dentin form of the defect part layer by layer by using oral cavity computer-aided design software; s3, completing the design of the enamel layer form on the digital model of the dentin form of the last layer of tooth defect part; s4, cover shell type guide plates covering adjacent teeth of the defective teeth are designed, and the cover shell type guide plates are numbered; s5, performing 3D printing on each layer of model and the guide plate, and checking the in-place condition of the guide plate; and S6, filling corresponding dentin resin and enamel resin in each stage of guide plate, resetting the guide plate filled with the resin to the oral dentition, and completing layered resin filling through illumination curing. According to the method, the process is optimized, the operation is simplified, and the operation precision is ensured by fully utilizing the advantages of the digital technology.

This invention discloses an automated anterior tooth feature parameter extraction method and evaluation system based on computer vision, comprising: acquiring and visualizing a full-mouth scan image of a patient to be processed; cropping the corresponding tooth portion image; using Gaussian blur to eliminate specular reflection; using color segmentation to set thresholds for the H, S, and V channels respectively; separating the teeth and gingiva in each tooth portion image and performing morphological processing on each; extracting the tooth and gingiva portion contours using contour extraction methods; further refining the segmentation accuracy using the Chan-Vese active contour model algorithm and the energy function within the tooth portion contour; extracting corner points using the Shi-Tomasi corner detection method and then clustering them; extracting other important evaluation feature points through curve fitting and extreme value finding methods; and finally calculating relevant objective indicators for tooth evaluation and automatically generating the corresponding tooth score, thus completing the automated anterior tooth evaluation.

The invention provides a mechanical arm path planning method and device for anterior tooth preparation, relates to the technical field of tooth preparation path planning, and aims to realize precise tooth preparation operation in a complex oral environment. The method comprises the following steps: constructing an anterior tooth preparation digital model according to oral scanning data of a patient, the anterior tooth preparation digital model representing a target form of a repaired tooth; according to the anterior tooth preparation digital model, a bur motion coordinate system is constructed, and the bur motion coordinate system is used for providing space origin reference for tooth preparation path generation; by taking the geometric parameters of the machine needle and the anatomy of the oral cavity of the patient as constraints and taking the anterior tooth preparation digital model as a starting point, reversely calculating a tooth preparation path of cutting from an original tooth body of an anterior tooth to the anterior tooth preparation digital model under the machine needle motion coordinate system; and converting the tooth preparation path into a mechanical arm control instruction to control a mechanical arm to carry out tooth preparation operation on the original anterior tooth body in the oral cavity of the patient.

To provide a facing crown capable of making the strength of an upper jaw front tooth equal to the occlusal force of a molar, and a wax cover capable of efficiently shaping a wax pattern formed in the process of manufacturing the facing crown.SOLUTION: A facing crown 30 to be attached to an upper jaw front tooth 11 is provided with a metal frame 32, and a step part 34 with which the top part of a lower jaw front tooth 21 is brought into contact is formed on the tongue side of the metal frame 32 when attached to the oral cavity. In a wax cover 40 used when the facing crown 30 is manufactured, a molding stepped part 45 having a shape similar to the shape of a stepped part 34 of the metal frame 32 is formed in a cutting edge part 44 of the wax cover 40.SELECTED DRAWING: Figure 1

An orthodontic appliance system (10) includes an appliance (12). The appliance (12) is provided with a shell (22), and the shell (22) comprises a first pair of cavities (24) and a second pair of cavities (24). Each cavity (24) of the first pair of cavities is for receiving an anterior tooth (56). Each cavity (24) of the second pair of cavities is for receiving a posterior tooth (64). The housing (22) includes an intermediate cavity (24) between a first cavity (24) of the first pair of cavities (24) and a second cavity (24) of the second pair of cavities (24). Each intermediate cavity (24) is for receiving a tooth between an anterior tooth (56) and a posterior tooth (64). The intermediate cavity (24) may be larger in size relative to the teeth. The housing (22) has a plurality of walls (32, 34, 36, 40) that define a cavity (24). At least one wall (32, 34, 36, 40) of the intermediate cavity (24) contains a rigidity enhancing region (42) extending from a first cavity (24) to a second cavity (24) of the pair of cavities (24). The region (42) may be a structure such as a stiffening beam (50).

The utility model provides a sliding type gap retainer which comprises a left resin base, a right resin base, a left retainer with one end embedded in the left resin base and a right retainer with one end embedded in the right resin base, and artificial teeth suitable for being matched with lacked deciduous tooth gap parts are connected to the left resin base or / and the right resin base. A sliding accessory is connected to the ends, located on the anterior tooth tongue side, of the left and right resin bases, the sliding accessory comprises a left sliding block embedded in the left resin base and a right sliding block embedded in the right resin base, left and right sliding holes which are transversely through and opposite are formed in the left and right sliding blocks respectively, and sliding rods with two bent ends are slidably connected into the left and right sliding holes; grooves communicated with the sliding holes are transversely formed in the ends, away from each other, of the left and right sliding blocks, and the two bent ends of the sliding rod slide in the left and right grooves in a matched mode. The left sliding block and the right sliding block in the sliding type gap retainer can slide freely in the transverse direction of the sliding rod, and growth of the transverse width of the lower jaw dentition, the alveolar bone and the jaw bone of a child cannot be limited.

The utility model discloses an anterior tooth reverse jaw corrector. The anterior tooth reverse jaw corrector comprises an upper jaw base and a lower jaw base, the lossy spiral expansion device is mounted in the middle of the upper jaw base plate; the two sides of the upper jaw base plate are each provided with one jaw pad, and the jaw pads cover upper jaw rear teeth; the two ends of the long arrow snap ring are embedded in the upper jaw base plate, and a sleeving and hanging part in the middle of the long arrow snap ring corresponds to the outer side of the upper jaw base plate; and the adjacent hook ball clamp is provided with a retention hook which is attached and fixed outside the molar and / or the canine. The anterior tooth reverse jaw corrector provided by the utility model is suitable for various stages such as deciduous teeth, mixed dentition, initial constant dentition and the like, solves the problem that the conventional corrector comprising the hyperbolic reed is easy to break, is high in safety performance, and can effectively correct the anterior tooth reverse jaw condition of various age stages.

Dental apparatus, systems, and methods for providing anterior, lateral, and vertical movement, an apparatus including a posterior portion to be affixed to and supported by a posterior dental structure of a patient; and an anterior portion connected to and separable from the posterior portion, the anterior portion operable to provide anterior movement, lateral movement, and vertical movement to an anterior dental structure of the patient.

The invention provides a guide plate system for full-thickness splitting of a palate center seam and a manufacturing method of the guide plate system. The guide plate system comprises a front guide plate and a palate guide plate, the front guide plate comprises a front tooth area retention part and a front guide part, the front tooth area retention part is matched with an upper jaw front tooth area to limit the intraoperative position of the front guide plate, and the front guide part is provided with a front guide window which limits a vestibular sulcus area osteotomy line; the palate guide plate comprises a posterior tooth area fixing part and a palate guide part and limits a mucous membrane containing space, the posterior tooth area fixing part is matched with maxillary posterior teeth and part of palate mucous membrane to limit the intraoperative position of the palate guide plate, and the palate guide part is provided with a palate guide window which limits an osteotomy line of a palate center joint.

The invention relates to the technical field of medical instruments, and provides oral cavity expansion equipment for child oral cavity examination, which comprises a seat, a backrest of the seat is a telescopic backrest, two sides of the backrest are provided with second limiting assemblies, one side of the seat is provided with a telescopic bracket, one side of the output end of the telescopic bracket is fixedly connected with a fixed rod, and the fixed rod is fixedly connected with a telescopic rod. The side, away from the telescopic support, of the fixing rod is rotationally connected with a fixing plate, and an expansion assembly is arranged on the fixing plate. The expansion assembly is ingenious in design, the oral cavity can be vertically expanded to facilitate examination of anterior teeth, rear alveolar teeth can be transversely expanded to meet different examination requirements, meanwhile, multiple limiting structures ensure that the expansion position is stable, manual fixing of medical staff is avoided, the examination efficiency is improved, and the medical risk is reduced. And a safe, comfortable and efficient solution is provided for oral examination of children.

The invention belongs to the technical field of medical instruments, and particularly relates to an invisible anterior tooth adduction correction device based on implant anchorage, which comprises a main body, two sides of the main body are fixedly connected with a pair of anchorage arms, one end, far away from the main body, of each anchorage arm is fixedly connected with a mounting part, and the edge of the main body is fixedly connected with a pair of fixing rings. The fixing ring is located between the pair of anchorage arms, a sliding groove is formed in the edge of the side, away from the fixing ring, of the body, a pair of sliding blocks are slidably connected to the inner side of the sliding groove, first hooks are fixedly connected to the sides, away from the fixing ring, of the sliding blocks, and a pair of second hooks are arranged on the two sides of the sliding groove. The anterior tooth adduction device has the beneficial effects that by arranging the main body, the anchorage arm, the anchorage nail and the fixing ring, the anterior tooth adduction device can be fixedly mounted in the palate skull of the oral cavity of a patient, and anchorage is provided for anterior tooth adduction of the patient, so that loss of anchorage is avoided, and accurate control on the anterior tooth adduction speed, direction and mode of the patient is realized.

The utility model relates to the technical field of medical equipment, and particularly discloses an anterior tooth area postoperative lip side skin inflation pressurization hemostasis device which comprises an inflation air bag, an air inlet pipe, a pressure measuring assembly and a hanging rope. An air inlet is formed in one side of the inflatable airbag, the air inlet pipe is connected with the air inlet, and the pressure measuring assembly is arranged on the air inlet pipe; the two ends of the hanging rope are connected with the two ends of the inflatable air bag respectively, and the hanging rope is provided with a length adjusting assembly. Through expansion of the inflatable air bag, the anterior tooth hemostat can be tightly attached to a postoperative wound in an anterior tooth area to form effective compression, so that bleeding is rapidly controlled, and the hemostasis efficiency is improved. Meanwhile, the pressure measuring assembly is arranged on the air inlet pipe, the pressure in the air bag can be monitored in real time, and it is ensured that the pressure is kept within a proper range.

The invention relates to the technical field of orthodontic medical instruments, in particular to a dentition tongue side stress application traction device, an anchorage nail of the device can be arranged on the upper jaw palatal side portion of the dentition tongue side, a traction hook can be fixed relative to anterior teeth and extends from the anterior teeth to the dentition tongue side, a guide rod penetrates through a directional catheter located on the dentition tongue side, and the directional catheter is connected with the traction hook. The draw bar is fixedly connected with the draw hook; according to the application, the anchorage nail is arranged on the palatal side part of the upper jaw bone on the dentition tongue side, and the influence of loosening or falling of the anchorage nail on the treatment efficiency is reduced by utilizing the advantage of compact bone in the area; meanwhile, the guide rod penetrates through the directional catheter and is fixedly connected with the traction hook, so that the orthodontic force is strictly applied along the extension direction of the guide rod, and the risk of accidental rotation or inclination of teeth can be reduced; the traction piece is connected with the traction hook and the anchorage nail or is connected with the traction hook and the rear teeth, no additional connecting device needs to be added, the traction piece can be effectively matched with the orthodontic appliance to correct the teeth, the operation process is simplified, and the treatment cost is reduced.

A dental appliance may include a first plurality of tooth receiving cavities for anterior teeth and a first plurality of attachment receiving cavities shaped to impart a first plurality of forces and a first counter moment to the anterior teeth, the first plurality of forces being to direct at least one tooth in a posterior direction. The dental appliance may include a second plurality of tooth receiving cavities for posterior teeth and a second plurality of attachment receiving cavities to impart a second plurality of forces and a second counter moment the posterior teeth, the second counter moment being in a direction opposing the first counter moment. At least a portion of the second plurality of forces may be configured to oppose the first plurality of forces. The first counter moment and the second counter moment may be configured to be coupled to form a differential moment.

The invention discloses an appliance for adjusting a jaw position relation based on simulated tooth tips and a preparation method, and relates to the technical field of medical instruments. The appliance comprises a simulated tooth tip assembly fixed on a tooth occlusal surface, and the simulated tooth tip assembly comprises a plurality of simulated tooth tips arranged on teeth in a back tooth area. Each simulation tooth tip comprises a guide surface arranged in the front area of a simulation tooth tip body, a bearing surface arranged in the rear area of the simulation tooth tip body and a compensation surface matched with an occlusal surface, the guide surfaces guide jaw teeth, so that the upper jaw and the lower jaw tend to be a repeatable stable jaw position, the influence of the simulation tooth tips on a wearer in the wearing process is relatively small, and the simulation tooth tips are more stable. In addition, the simulation tooth tips are arranged in the rear tooth area, the mechanical effect of the simulation tooth tips cannot affect the inferior incisor teeth, and the risk of lip inclination of the lower anterior teeth is reduced.

Provided is an orthodontic appliance, comprising a fixed base (1) that can be bonded and fixed to a tooth surface, a movable wing (2), and a spring (3). The movable wing (2) is slidably positioned on the fixed base (1); a bottom surface of the fixed base (1) is machined with a bonding pattern, one end of the surface is machined with a wing base (12), and the middle of the wing base (12) is provided with a sliding groove (121) in a direction of the central plane; the movable wing (2) comprises an occlusal splint (21) and a sliding rod (22), and the sliding rod (22) is positioned in the sliding groove (121) and can move back and forth along the sliding groove (121); the spring (3) is sleeved on the sliding rod (22), and one end of the spring (3) abuts against the wing base (12) and always maintains a tendency in which the movable wing (2) is away from the wing base (12); the occlusal splint (21) can move toward the wing base (12) end under the driving of the tooth occlusal force and generate an orthodontic thrust on the wing base (12) by means of the spring (3). Using the occlusal splint (21) on the movable wing (2), the occlusal force generated by each occlusal action is picked up and converted into an adduction force on the anterior teeth, thereby forming a dynamic orthodontic process and minimizing the impact on the posterior teeth.

The application discloses a segmented orthodontic appliance for vertical non-adjustment of anterior and posterior teeth, comprising an anterior tooth mouth body and a posterior tooth mouth body, the anterior tooth mouth body comprises a plurality of anterior tooth wrapping bodies, adjacent anterior tooth wrapping bodies are rigidly connected or connected through force arms, the posterior tooth mouth body comprises a plurality of posterior tooth wrapping bodies, adjacent anterior tooth wrapping bodies are rigidly connected or connected through force arms; the anterior tooth mouth body and the posterior tooth mouth body are rigidly connected or connected through force arms; the force arms are used for directional force on the anterior teeth and / or the posterior teeth, and / or the force arms are used for force on the buccal side and / or the lingual side; there are at least two force arms, and there are at least one anterior tooth wrapping body or at least one posterior tooth wrapping body between adjacent force arms. The application adds a specific stress interruption mechanical structure in the middle segment of the tooth arch of the invisible appliance, so that the force mode of the appliance is optimized, and the treatment efficiency of the vertical non-adjustment of the anterior and posterior teeth is improved.

The utility model relates to a front tooth steel position limiting precision implanting tool belongs to dental implant tool field, the utility model discloses a guide plate and hold nail ware, the rigid guide ring of length greater than 8mm is equipped on the guide plate, the lower end surface of rigid guide ring is flush with the lower bottom surface of guide plate body, the needle lock catch of car, the coding ring, the limiting column and the fixed body are sequentially provided from top to bottom on hold nail ware, the limiting column is the cylinder, the outer diameter of limiting column is matched with the inner diameter of rigid guide ring, the utility model can effectively avoid or reduce the problem of the direction deviation of the preparation hole and the implanting process, improves the implanting precision, guarantees the implanting quality, is applicable to the precision implanting positioner in the front tooth implanting process.

The utility model provides an orthodontic auxiliary anterior tooth depressing device, and mainly relates to the technical field of orthodontics. The orthodontic auxiliary anterior tooth depressing device comprises a main arch tube, a connecting tube is fixedly arranged at the bottom of the main arch tube, an auxiliary arch tube is fixedly arranged at the bottom of the connecting tube, and the auxiliary arch tube and the main arch tube are obliquely arranged. The device has the beneficial effects that the device can be added and taken down at any time clinically, and does not need to be bonded with a dental surface, so that the chair-side time is saved; an auxiliary bow does not need to be additionally bent, and a common nickel-titanium wire can enter the auxiliary bow tube; pressing force can be reduced to cross the canine teeth, and stress interruption is avoided; and the main anchorage tooth is arranged between the two back teeth, so that only one tooth is stressed, and the back teeth are prevented from being extended too much.

The invention provides an occlusion induction appliance for a tooth replacement period, an orthodontic system for guiding jaw growth in the tooth replacement period and a design method of the orthodontic system. The occlusion induction appliance for the tooth replacement period comprises an upper jaw tooth socket and a lower jaw tooth socket, a lower jaw brace; the intermaxillary connecting body is positioned between the occlusal surfaces of the back tooth areas of the upper jaw tooth socket and the lower jaw tooth socket; wherein the upper jaw tooth socket and the lower jaw tooth socket form a rigid integral structure which cannot move relatively on an occlusal surface through the intermaxillary connector; the intermaxillary connecting body has a preset thickness so as to open occlusion contact of upper and lower anterior teeth in a wearing state, and the intermaxillary connecting body is configured to lock the lower jaw tooth socket at a preset three-dimensional space position relative to the upper jaw tooth socket body; when the occlusion induction appliance for the tooth replacement period is worn, the upper dentition and the lower dentition serve as integral interactive anchorage, and the occlusion force is converted into the orthodontic force acting on the dentition or the jaw bone.

The utility model discloses a molar mesial movement auxiliary device which comprises a main arch wire, a plurality of orthodontic brackets, an auxiliary arch wire, a ligature wire and an anchorage nail, the main arch wire penetrates through the orthodontic brackets and is fixed with the orthodontic brackets, two question mark hooks of the auxiliary arch wire are sleeved on the main arch wire, and the ligature wire is connected with the anchorage nail. The auxiliary arch wire is further provided with two small circles formed by bending, the small circle in the distal direction is rigidly connected to an anchorage nail planted on the alveolar bone through a fixing ligature wire, and the other small circle is free. According to the utility model, a stable rectangular structure can be formed, after force application, interference caused by lip and cheek movement or feeding is avoided, displacement is avoided, foreign body sensation is reduced, the bad effect of distal movement of anterior teeth and premolars can be avoided, friction force of tooth movement is not increased, and meanwhile, the structure is simple and convenient. And when the molars move forwards, the lip inclination acting force on the anterior teeth is also reduced.

The invention provides a 3D printing dental model detection method to improve the measurement accuracy of a dental model, and relates to the field of 3D printing model detection. The 3D printing dental model detection method comprises the following steps: respectively adding a first measurement positioning column and a second measurement positioning column at post-molar areas on two sides of a dental three-dimensional model by utilizing 3D printing processing software, and respectively adding a third measurement positioning column and a fourth measurement positioning column at pre-molar areas on two sides of the dental three-dimensional model, adding a fifth measurement positioning column in the anterior tooth area of the dental three-dimensional model; printing a dental model; performing measurement; and calculating the X axial precision SX, the Y axial precision SY, the front end external expansion deformation rate R < front > and the front end external expansion deformation rate R < rear > of the dental model. According to the invention, the printing precision condition of the dental model can be better monitored.

The utility model relates to an anterior tooth shaping device which is arranged between the dentition of a human body and the lip and cheek and comprises an arc-shaped plate body matched with the vestibule of the oral cavity, and the arc-shaped plate body comprises an upper lip induction section used for covering the upper tooth part and a lower lip induction section used for covering the lower tooth part and supporting the lower lip. A lip line which faces the lip direction and is used for filling a gap between the upper lip and the lower lip is arranged at the junction of the upper lip induction section and the lower lip induction section, and the upper part of the lower lip induction section is a cutting end cap which protrudes towards the upper anterior teeth and abuts against the cutting end of the upper anterior teeth. Compared with the prior art, through the effect of the lip line and the incisal end cap and the synergistic effect of the lip line and the incisal end cap, training of lip muscle and correction of upper and lower anterior teeth are achieved; the arc-shaped upper lip induction section and the arc-shaped lower lip induction section better conform to the space range between the dentition and the lip and cheek, and normal lip wrapping can be formed easily.