CN114983595A - Integrated orthognathic postoperative tooth and jaw stabilizing device and design method thereof - Google Patents
Integrated orthognathic postoperative tooth and jaw stabilizing device and design method thereof Download PDFInfo
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- CN114983595A CN114983595A CN202210684925.7A CN202210684925A CN114983595A CN 114983595 A CN114983595 A CN 114983595A CN 202210684925 A CN202210684925 A CN 202210684925A CN 114983595 A CN114983595 A CN 114983595A
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- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
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Abstract
The invention provides an integrated orthognathic postoperative tooth and jaw stabilizing device and a design method thereof, wherein the stabilizing device comprises: positioning a plate; the upper jaw dentition wrapping layer is arranged on one side of the positioning plate, the upper jaw dentition wrapping layer and the positioning plate jointly limit an upper jaw retention tooth socket suitable for being arranged on the upper jaw dentition, and the inner side contour of the upper jaw retention tooth socket is matched with the outer contour of the upper jaw dentition crown; the lower jaw dentition wrapping layer is arranged on the other side of the positioning plate, the lower jaw dentition wrapping layer and the positioning plate jointly limit a lower jaw fixing tooth socket suitable for being arranged in the lower jaw dentition, and the inner side contour of the lower jaw fixing tooth socket is matched with the outer contour of a dental crown of the lower jaw dentition; and the relative positions of the upper and lower jaw retention braces define the bite position of the upper and lower jaw dentitions; the positioning plate is further provided with a hollowed area, and when the upper and lower jaw dentitions are located at the occlusion position, the upper and lower jaw teeth corresponding to the hollowed area can be in contact.
Description
Technical Field
The invention relates to the field of orthodontic and orthognathic surgical tools, in particular to an integrated orthognathic postoperative tooth and jaw stabilizing device and a design method thereof.
Background
The orthodontic treatment can effectively improve the jaw deformity and establish stable occlusion relation. The treatment is that orthodontic alignment dentition is firstly performed before an operation, compensatory inclination of teeth is removed, and a space is created for a jaw surgery; then, after cutting the upper and lower jaws through orthognathic surgery, moving to a designed position and fixing bone blocks at the position by using a titanium plate; and finally, performing postoperative orthodontics to establish a stable occlusion relation. However, even if firm internal fixation is performed due to factors such as pulling of soft tissues such as muscles after surgery and occlusion interference, it is often difficult to maintain stable jaw relation after surgery, and there is a risk of recurrence of malformation of jaws.
In the transition stage from the end of orthognathic surgery to the beginning of postoperative orthodontics, the current mode adopted stabilizes the position of the postoperative jaw bone by matching the occlusion guide plate used in the continuous wearing surgery with the elastic traction between the jaws. The occlusion guide plate used in orthognathic surgery is temporarily used in the surgery to assist in guiding the position of a jaw bone, and is easy to break and difficult to wear for a long time due to poor retention. However, at present, the occlusion guide used in orthognathic surgery is still used for 1-3 months after surgery to maintain the position of the jaw bone of a patient. Because the occlusal guide plate only covers a small amount of dental cusps, the lower jaw can still slide and cannot stably lock the positions of the upper jaw and the lower jaw, the occlusal guide plate has poor capacity of maintaining the relationship between the positions of the upper jaw and the lower jaw after operation, and for patients who use the bracket-free invisible appliance for preoperative orthodontics, the invisible braces cannot be worn immediately after the operation, and the operation occlusal guide plate has no holding effect on the positions of teeth, so that the teeth are mistakenly positioned
The deformity recurs.
All the above problems will cause the recurrence of malformation of jaw and malocclusion after orthognathic surgery
Recurrence, affecting the efficacy and increasing the difficulty of orthodontics after surgery.
Disclosure of Invention
In view of the above technical problems, the present invention provides an integrated orthognathic post-operation tooth and jaw stabilizing device, comprising:
positioning a plate;
the upper jaw dentition winding layer is arranged on one side of the positioning plate, the upper jaw dentition winding layer and the positioning plate jointly limit an upper jaw retention tooth socket which is suitable for being arranged on the upper jaw dentition, and the inner side contour of the upper jaw retention tooth socket is matched with the outer contour of the upper jaw dentition;
the lower jaw teeth row wrapping layer is arranged on the other side of the positioning plate, the lower jaw teeth row wrapping layer and the positioning plate jointly define a lower jaw retaining tooth socket suitable for being arranged in the lower jaw teeth row, and the inner side contour of the lower jaw retaining tooth socket is matched with the outer shape contour of the dental crown of the lower jaw teeth row; and is
The relative positions of the upper and lower jaw retention braces define the bite position of the upper and lower jaw dentitions;
and when the upper and lower jaw dentition is positioned at the occlusion position, the upper and lower jaw teeth corresponding to the hollow area can be contacted.
Further, the outer contour of the maxillary dentition wrapping layer conforms to the inner contour thereof.
Further, the outer contour of the mandibular dentition wrap layer conforms to the inner contour thereof.
Further, 1/3 where the maxillary retention mouthpiece wraps around the maxillary dentition crown; the mandibular retention cuff surrounds 1/3 of the mandibular dentition crown.
Further, the thickness of the upper jaw dentition wrapping layer and the lower jaw dentition wrapping layer ranges from 1.5mm to 2.0 mm.
Further, the thickness of the maximum thickness position of the positioning plate is not more than the preset thickness, and the value range of the preset thickness is 1.5-2.0 mm.
Further, positive jaw postoperative tooth of integral type and jaw stabilising arrangement integrated into one piece.
Further, positive jaw postoperative tooth of integral type and jaw stabilising arrangement form through 3D printing.
Furthermore, the integrated orthognathic postoperative tooth and jaw stabilizing device is made of medical high polymer materials.
The invention also provides a design method of the integrated orthognathic postoperative tooth and jaw stabilizing device, which comprises the following steps:
establishing a digital occlusion model of the upper jaw and the lower jaw, wherein the upper jaw and the lower jaw are positioned at an postoperative occlusion position;
determining a maxillary dentition wrapping boundary and a mandibular dentition wrapping boundary;
thickening the crowns or contours of the upper and lower jaw dentitions between the upper jaw dentition surrounding boundary and the lower jaw dentition surrounding boundary to form a preset thickness forming device entity;
and on the device entity, subtracting the upper and lower jaw occlusion model through difference set operation of Boolean operation to obtain a digital model of the integrated orthognathic postoperative tooth and jaw stabilizing device.
The integrated orthognathic postoperative tooth and jaw stabilizing device and the design method thereof have the following beneficial effects:
1. the upper jaw teeth position is stabilized through the upper jaw retention mouthpiece in the integrated structure, and the lower jaw teeth position is stabilized through the lower jaw retention mouthpiece; the occlusion position is limited by the relative positions of the upper jaw retention tooth socket and the lower jaw retention tooth socket, so that the position of teeth can be stabilized, and the position relation of the upper jaw and the lower jaw can be stabilized;
2. the crown wrapping mode of the whole dentition is adopted, so that the retention and stabilization effects are better, the jaw bone is maintained to be stable, and the stability of the position of the teeth after the preoperative orthodontic treatment is kept;
3. 3D printing is adopted, so that higher accuracy is achieved;
4. the medical polymer material is used, and the material has certain elasticity and is easier to wear in place;
5. the stabilizing device does not press gum and mucous membrane when being worn, has high comfort level, has little influence on the life and the beauty of a patient, and can be worn for a long time to maintain the curative effect after orthodontic orthognathic treatment.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic structural view of an integrated orthognathic post-operative teeth and jaw stabilization device according to an embodiment of the present invention, showing a side on which upper jaw retention braces are located;
fig. 2 is a block diagram of another perspective view of the integrated orthognathic post-operative teeth and jaw stabilization device of fig. 1, showing a side on which a mandibular retention brace is located.
Description of the reference numerals:
100-a positioning plate, 110-a hollow-out area,
200-maxillary dentition wrapping layer, 210-maxillary dentition labial wrapping layer,
220-palatal wrapping layer of maxillary dentition, 230-accommodation space,
300-mandibular dentition wrapping layer, 310-mandibular dentition labial wrapping layer,
320-mandibular dentition lingual wrapping 330-accommodation space.
Detailed Description
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the invention. The drawings are schematic diagrams or conceptual diagrams, and the relationship between the thickness and the width of each part, the proportional relationship between the parts and the like are not completely consistent with actual values.
Fig. 1 and 2 are schematic structural views illustrating an integrated orthognathic post-operation tooth and jawbone stabilizing apparatus according to an embodiment of the present invention, which includes a positioning plate 100, a maxillary dentition surrounding layer 200, and a mandibular dentition surrounding layer 300.
The positioning plate 100 is adapted to the form of the dental arch of a patient, and can be classified into a pointed circle, an oval circle, a square circle, and the like according to the sizes of men and women.
The maxillary dentition winding layer 200 is disposed at one side of the positioning plate 100, and particularly, the maxillary dentition winding layer 200 includes a maxillary dentition lip side winding layer 210 and a maxillary dentition palate side winding layer 220, the maxillary dentition lip side winding layer 210 and the maxillary dentition palate side winding layer 220 are respectively disposed at the outer edge and the inner edge of the arch structure of the positioning plate 100, and for the case where there is a certain gap between adjacent dentitions, the maxillary dentition lip side winding layer 210 and the maxillary dentition palate side winding layer 220 may be correspondingly connected at the gap, thereby forming a winding for the teeth at both sides at the gap. The maxillary dentition labial wrapping layer 210, the maxillary dentition palatal wrapping layer 220 and the positioning plate 100 together define a receiving space 230.
The shape of the accommodating space 230 is adapted to the shape of the maxillary dental crown so that the maxillary dental crown can be disposed in the accommodating space 230, and the positioning plate 100, the maxillary labial-side wrapping layer 210 and the maxillary palatal-side wrapping layer 220 are fittingly wrapped on the maxillary dental crown, i.e., it can be also considered that the positioning plate 100 and the maxillary wrapping layer 200 (including the maxillary labial-side wrapping layer 210 and the maxillary palatal-side wrapping layer 220) together define a maxillary retaining mouthpiece adapted to be mounted on the maxillary dental arch, and the inner profile of the maxillary retaining mouthpiece is adapted to the outer profile of the maxillary dental crown so that the maxillary retaining mouthpiece can be fittingly fitted on the maxillary dental arch so that the maxillary teeth can be stably maintained at the pre-operative orthodontic position.
The outer profile of the maxillary dentition winding layer 200 is identical to the inner profile thereof, that is, the maxillary dentition winding layer 200 has a uniform thickness, and the thickness preferably ranges from 1.5 to 2.0mm, and in this embodiment, the thickness of the maxillary dentition winding layer 200 is set to 1.5 mm.
The preferred range of the maxillary retention mouthpiece surrounding the maxillary dentition is 1/3 surrounding at least the maxillary dentition crown, i.e., surrounding the maxillary dentition crown in the gingival-facing direction from the occlusal surface at least 1/3. In this embodiment, the maxillary retention mouthpiece is provided 1/2 surrounding the maxillary dentition crown.
The mandibular dentition wrapping layer 300 is disposed on the other side of the positioning plate 100 opposite to the maxillary dentition wrapping layer 200, and in particular, the mandibular dentition wrapping layer 300 includes a mandibular dentition labial side wrapping layer 310 and a mandibular dentition lingual side wrapping layer 320, and the mandibular dentition labial side wrapping layer 310 and the mandibular dentition lingual side wrapping layer 320 are disposed on the outer edge and the inner edge of the arch of the positioning plate 100, respectively, and in the case that a certain gap exists between adjacent dentitions, the mandibular dentition labial side wrapping layer 310 and the mandibular dentition lingual side wrapping layer 320 are connected at the gap, respectively, so as to wrap the teeth on both sides at the gap. The mandibular dentition labial wrapping layer 310, the mandibular dentition lingual wrapping layer 320 and the positioning plate 100 cooperate to define a receiving space 330.
The shape of the receiving space 330 is adapted to the shape of the dental crowns of the mandibular row so that the dental crowns of the mandibular row can be placed in the receiving space 330 with the positioning plate 100, the labial wrapping layer 310 and the lingual wrapping layer 320 snugly wrapped around the dental crowns of the mandibular row, i.e., it can be seen that the positioning plate 100 and the lingual wrapping layer 300 (including the labial wrapping layer 310 and the lingual wrapping layer 320) together define a mandibular retaining shell adapted to fit the mandibular row, the inner profile of the mandibular retaining shell being adapted to the outer profile of the dental crowns of the mandibular row so that the mandibular retaining shell can snugly fit the mandibular row so that the mandibular teeth can be stably held in the pre-orthodontic position.
The outer contour of the mandibular dentition surrounding layer 300 is consistent with the inner contour thereof, i.e. the mandibular dentition surrounding layer 300 has a uniform thickness, preferably ranging from 1.5 to 2.0mm, in this embodiment, the thickness of the mandibular dentition surrounding layer 300 is set to 1.5 mm.
The preferred range of the mandibular retention cuff surrounding the mandibular dentition is at least 1/3 surrounding the crowns of the mandibular dentition, i.e. at least 1/3 surrounding the crowns of the mandibular dentition from the occlusal surface in the gingival direction. In this embodiment, the mandibular retention cuff is provided 1/3 surrounding the mandibular dentition crown.
The occlusion position of upper and lower jaw dentition is injectd through the relative position of upper jaw maintenance facing and lower jaw maintenance facing to the integral type orthognathic postoperative tooth and jaw stabilising arrangement of this embodiment, or, the position relation of upper jaw maintenance facing and lower jaw maintenance facing is injectd to the occlusion relation of the upper and lower jaw dentition that the accessible was predetermine for the patient, thereby when the integral type orthognathic postoperative tooth and jaw stabilising arrangement of this embodiment were worn to the patient, can make upper and lower jaw dentition stabilize on predetermined occlusion position, also make the postoperative jaw be stabilized on predetermined position promptly.
In this embodiment, the positioning plate 100 is further provided with a hollow area 110, and the hollow area 110 is configured such that when the patient wears the integrated orthognathic postoperative tooth and jaw stabilizing device of this embodiment, that is, when the upper and lower jaw dentitions are at the preset occlusion position, the upper and lower jaw teeth corresponding to the hollow area 110 can contact with each other, generally speaking, the hollow area 110 corresponds to the early contact point of the upper and lower jaw teeth during occlusion. Such setting can make patient's interlock more be close to the state of natural interlock as far as possible, and the region that locating plate 100 is not fretwork can provide interval and support on the occlusal surface again simultaneously to make the tooth that has contacted can not interlock too tightly, thereby arouse local atress too big, then influence the stability of tooth and jaw.
The positioning plate 100 is provided with a profile adapted to the occlusal surfaces of the upper jaw and the lower jaw, and a hollow area 110, so that the thickness of the positioning plate 100 is uneven, and the thickness of the thickest part of the positioning plate 100 is preferably 1.5-2.0 mm. In this embodiment, the thickness of the thickest portion of the positioning plate 100 is set to be not greater than 1.5 mm.
The integrated orthognathic postoperative tooth and jaw stabilizing device of the embodiment is integrally formed, preferably by 3D printing, and the material can be medical polymer material, and the material used in the embodiment is biocompatible PolyJet photopolymer (MED 610). The occlusion guide plate used in the existing operation is limited by the use requirement in the operation, the material of the occlusion guide plate needs to be hard, and the occlusion guide plate can only be arranged to wrap a small number of teeth when being designed due to the hard material of the occlusion guide plate, the wrapped teeth are mainly the cusp part, and the occlusion guide plate is thick in whole, large in size and difficult to wear for a long time after the operation. The tooth and jaw stabilising arrangement after integral type orthognathic operation of this embodiment compare in the interlock baffle, and its material has certain elasticity, so is suitable for wrapping up the tooth more.
The patient is 1 ~ 2 weeks after orthognathic, and the integral type orthognathic postoperative tooth and jaw stabilising arrangement of this embodiment are worn to removable orthognathic occlusion baffle. The stabilizing device can be worn 22 hours a day within 1 month after orthognathic surgery, and can also be matched with the elastic traction of an interjawbone rubber band to prevent postoperative recurrence; after 1 month, the wearing time can be gradually reduced; and 3 months after the operation, the device is not used according to the stable relation of the jaw bone, and the orthodontics after the operation is started.
The integrated orthognathic postoperative tooth and jaw stabilizing device of the embodiment stabilizes the position of upper jaw teeth through the upper jaw retention tooth socket in an integrated structure, and stabilizes the position of lower jaw teeth through the lower jaw retention tooth socket; the occlusion position is defined by the relative positions of the upper and lower jaw retention braces, so that the positional relationship of the maxilla and mandible can be stabilized.
On the other hand, the choice of material and thickness of the device is also a design point, which allows to achieve the above-mentioned stabilization of the teeth and jaw while at the same time allowing comfort. The hardness of the integrated orthognathic postoperative tooth and jaw stabilizing device is between that of an existing occlusion guide plate and an existing invisible facing (the thickness is generally 0.5-0.8 mm), which is determined by different functions of the three in treatment, the material of the occlusion guide plate used in the operation needs to be hard so as to avoid deviation in occlusion positioning due to elasticity, the material of the invisible facing is relatively soft, and correction force needs to be provided for teeth through elastic recovery, the integrated orthognathic postoperative tooth and jaw stabilizing device of the embodiment does not need to provide correction force for the teeth, the teeth are wrapped so as to provide a better stabilizing effect for the teeth and the jaws, and the hardness of the integrated orthognathic postoperative tooth and jaw stabilizing device is higher than that of the invisible facing; meanwhile, the elasticity of the tooth-wrapping device is higher than that of the occlusion guide plate, the tooth-wrapping device is more suitable for wrapping teeth in a large range, and the wearing comfort is improved. So the integral type orthognathic postoperative tooth and jaw stabilising arrangement of this embodiment compares and seems similar in appearance in current interlock baffle and stealthy facing, but the usage and the design point of three are still very different.
In conclusion, the integrated orthognathic postoperative tooth and jaw stabilizing device of the embodiment adopts a crown wrapping mode of a full dentition, has better retention and stabilizing effects, maintains jaw stability, and simultaneously keeps the stability of the position of the tooth after preoperative orthodontic treatment; 3D printing is adopted, so that higher accuracy is achieved; the medical polymer material is used, and the material has certain elasticity and is easier to wear in place; and the stabilizing device does not press gingiva and mucous membrane, has high comfort level, has small influence on life and beauty of a patient, and can be worn for a long time to maintain the curative effect after orthodontic orthognathic treatment.
The design method of the integrated orthognathic postoperative tooth and jaw bone stabilizing device comprises the following steps:
s100, establishing a digitalized upper and lower jaw occlusion model with upper and lower jaw dentitions in a postoperative occlusion position;
s200, determining a maxillary dentition wrapping boundary and a mandibular dentition wrapping boundary;
s300, thickening the crowns or contours of the upper and lower jaw dentitions between the upper jaw dentition surrounding boundary and the lower jaw dentition surrounding boundary to form a preset thickness forming device entity;
s400, on the device entity, subtracting the upper and lower jaw occlusion model through difference set operation of Boolean operation to obtain a digital model of the integrated orthognathic postoperative tooth and jaw stabilizing device.
In step S100, a full-mouth dental model of the patient is obtained, an orthodontic orthognathic treatment scheme is determined by combining the patient' S chief complaints, facial type and current intraoral occlusion condition through orthodontist consultation, and a digital upper and lower jaw occlusion model is obtained by adjusting the maxillary dentition and the mandibular dentition of the patient after preoperative orthodontics to a postoperative occlusion relationship through a computer-assisted segment.
For the acquisition of computer data, for example, intraoral crown and soft tissue data can be obtained through a plaster model/intraoral scanning data of dentition, tooth root and jaw data can be obtained through skull CBCT/CT data, three-dimensional images of teeth, jaws and soft tissues can be completely reconstructed after data fitting, and an operation scheme is designed on the basis to determine the position and occlusion relation of the postoperative jaws.
In step S200, the maxillary dentition surrounding boundary defines an end position of the integrated orthognathic post-operative tooth and the maxillary stabilizing device surrounding the maxillary dentition crown, i.e. defines a range surrounding the maxillary dentition crown, such as 1/2 surrounding the maxillary dentition crown in the present embodiment, and the maxillary dentition surrounding boundary may be set as a plane or a curved surface separating the crowns of the maxillary dentition by 1 to 1; the mandibular dentition enclosure boundary defines the termination location of the integrated orthognathic post-operative tooth and the jaw stabilizing device around the crowns of the mandibular dentition, i.e. the extent of the mandibular dentition crowns, 1/3 in this case around the mandibular dentition crowns, where the mandibular dentition enclosure boundary may be arranged as a plane or curve that separates the crowns of the mandibular dentition by 2 to 1.
In step S300, the pre-thickness forming device entity is thickened based on the maxillary and mandibular dentition crowns between the maxillary and mandibular dentition surrounding boundaries, which specifically includes the steps of:
310, segmenting the upper and lower jaw dentitions between the upper jaw dentition wrapping boundary and the lower jaw dentition wrapping boundary to form an upper and lower jaw dentition entity needing to be wrapped;
in some embodiments, the upper and lower jaw dentition entities to be surrounded are segmented by removing the parts outside the maxillary and mandibular dentition surrounding boundaries in the full dentition model;
in some embodiments, the reference entity is defined by more than one wrapping boundary of the jaw dentition and wrapping boundaries of the lower jaw dentition, and the size of the reference entity extends to cover the range of the full dentition, so that the intersection of the reference entity and the full dentition model is the upper and lower jaw dentition entity to be wrapped, and the intersection is extracted to obtain the upper and lower jaw dentition entity to be wrapped;
step 320, on the basis of the upper and lower jaw dentition entity needing to be wrapped, performing thickening operation to form a device entity;
in some embodiments, the device body is formed by directly thickening the upper and lower jaw dentition body to be surrounded by a predetermined thickness, and the device body is a solid structure body;
in some embodiments, the outer curved surface of the upper and lower jaw dentition entity to be surrounded is used as an initial surface to extend outwards to form a preset thickness generating device entity, and the entity is a hollow entity.
For the formation of the device entity in step 320, in some embodiments, the upper and lower jaw dentitions may be processed separately, such as the maxillary dentition crown or the maxillary dentition entity to be wrapped may be formed by thickening the contour of the maxillary dentition crown or the mandibular dentition crown between the maxillary and mandibular dentition wrapping boundaries; and thickening the dental crowns or the outlines of the lower jaw dentitions between the upper jaw dentition surrounding boundary and the lower jaw dentition surrounding boundary by a preset thickness to form a lower jaw dentition entity needing to be surrounded; and finally, synthesizing the maxillary dentition entity to be wrapped and the mandibular dentition entity to be wrapped into a device entity through the collective operation of Boolean operation.
In step S400, the digital model of the integrated orthodontic post-operative tooth and jaw stabilizing device in the present embodiment can be obtained by subtracting the upper and lower jaw occlusion models from the device entity formed in any of the above manners through a difference set operation of boolean operations.
In some embodiments, after the digital model of the integrated orthognathic post-operation teeth and jaw bone stabilization device is generated, based on the different tooth shapes of the patients, some corresponding modifications are made to the model, such as removing the tiny fragments that are separated from the device body, or chamfering or rounding the edges of the device.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection determined by the claims.
Claims (10)
1. The utility model provides an integral type orthognathic postoperative tooth and jaw stabilising arrangement which characterized in that includes:
positioning a plate;
the upper jaw dentition winding layer is arranged on one side of the positioning plate, the upper jaw dentition winding layer and the positioning plate jointly limit an upper jaw retention tooth socket which is suitable for being arranged on the upper jaw dentition, and the inner side contour of the upper jaw retention tooth socket is matched with the outer contour of the upper jaw dentition;
the lower jaw teeth row wrapping layer is arranged on the other side of the positioning plate, the lower jaw teeth row wrapping layer and the positioning plate jointly define a lower jaw retaining tooth socket suitable for being arranged in the lower jaw teeth row, and the inner side contour of the lower jaw retaining tooth socket is matched with the outer shape contour of the dental crown of the lower jaw teeth row; and the relative positions of the upper and lower jaw retention braces define the bite position of the upper and lower jaw dentition;
and when the upper and lower jaw dentition is positioned at the occlusion position, the upper and lower jaw teeth corresponding to the hollow area can be contacted.
2. The integrated orthognathic postoperative tooth and jaw stabilizing device according to claim 1, wherein the outer profile of the maxillary dentition wrapping layer conforms to the inner profile thereof.
3. The integrated orthognathic postoperative tooth and jaw stabilizing device according to claim 1, wherein the mandibular dentition wrapping layer has an outer profile that conforms to an inner profile thereof.
4. The integrated orthognathic post-operative tooth and jaw stabilization device of claim 1, wherein the upper jaw retention brace wraps around 1/3 of the maxillary dentition crown; the mandibular retention cuff surrounds 1/3 of the mandibular dentition crown.
5. The integrated orthognathic postoperative tooth and jaw stabilizing device according to claim 1, wherein the thickness of the maxillary dentition wrapping layer and the mandibular dentition wrapping layer ranges from 1.5 to 2.0 mm.
6. The integrated orthognathic postoperative tooth and jaw stabilizing device according to claim 1, wherein the thickness of the positioning plate at the maximum thickness does not exceed a preset thickness, and the value range of the preset thickness is 1.5-2.0 mm.
7. The integrated orthognathic post-operation tooth and jaw bone stabilization device of claim 1, wherein the integrated orthognathic post-operation tooth and jaw bone stabilization device is integrally formed.
8. The integrated orthognatic post-operative tooth and jaw bone stabilization device according to claim 1, wherein the integrated orthognatic post-operative tooth and jaw bone stabilization device is formed by 3D printing.
9. The integrated orthognathic postoperative tooth and jaw stabilizing device according to claim 1, wherein the material of the integrated orthognathic postoperative tooth and jaw stabilizing device is medical polymer material.
10. A design method of an integrated orthognathic postoperative tooth and jaw stabilizing device is characterized by comprising the following steps:
establishing a digital occlusion model of the upper jaw and the lower jaw, wherein the upper jaw and the lower jaw are positioned at an postoperative occlusion position;
determining a maxillary dentition wrapping boundary and a mandibular dentition wrapping boundary;
thickening the crowns or contours of the upper and lower jaw dentitions between the upper jaw dentition surrounding boundary and the lower jaw dentition surrounding boundary to form a preset thickness forming device entity;
and on the device entity, subtracting the upper and lower jaw occlusion model through the difference set operation of Boolean operation to obtain a digital model of the integrated orthognathic postoperative tooth and jaw stabilizing device.
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| JPH07124177A (en) * | 1993-11-04 | 1995-05-16 | Mikio Sato | Tooth retainer appliance and positioner used for the same device |
| JP2003038520A (en) * | 2001-08-01 | 2003-02-12 | Shinya Uchida | Dental retainer |
| KR20150120752A (en) * | 2014-04-18 | 2015-10-28 | 박종범 | Apparatus for inducing respiration |
| JP2016182337A (en) * | 2015-03-26 | 2016-10-20 | 澄祥 洪 | Orthognathic correction device and orthognathic correction method |
| CN114010347A (en) * | 2020-11-12 | 2022-02-08 | 上海交通大学医学院附属第九人民医院 | Self-fixing type individual lower jaw retainer and construction method thereof |
| CN215228624U (en) * | 2021-03-16 | 2021-12-21 | 杭州一牙数字口腔有限公司 | Novel tooth keeps ware |
| CN113786249A (en) * | 2021-10-09 | 2021-12-14 | 上海交通大学医学院附属第九人民医院 | Orthognathic postoperative does not have stealthy vertical control device of correction in groove |
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