CN215739562U - Mandible lifting front edge bone taking guide plate - Google Patents
Mandible lifting front edge bone taking guide plate Download PDFInfo
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- CN215739562U CN215739562U CN202121340749.2U CN202121340749U CN215739562U CN 215739562 U CN215739562 U CN 215739562U CN 202121340749 U CN202121340749 U CN 202121340749U CN 215739562 U CN215739562 U CN 215739562U
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Abstract
The utility model relates to the field of medical instruments, in particular to a mandible lifting front edge bone taking guide plate. The utility model provides a mandibular lifting front edge bone taking guide plate which comprises a dentition supporting part and a bone taking positioning part, wherein the dentition supporting part comprises a mandibular dentition attaching cavity, the bone taking positioning part comprises a circuitous part which is used for attaching with a mandibular lifting part and extends from the lingual side surface of the mandibular lifting part to the buccal side surface, and a blocking part which is used for attaching with the lingual side of the mandibular lifting part and extends from the circuitous part to the mandibular angle direction, and the dentition supporting part and the bone taking positioning part are connected through a connecting part. The mandible lifting front edge bone taking guide plate provided by the utility model is matched with the mandible dentition of a subject through the mandible dentition fitting cavity of the dentition supporting part, and the uniqueness of the position relation between the mandible dentition of the subject and a bone taking area is utilized, so that the uniqueness and the accuracy of positioning the bone taking area by the bone taking positioning ring can be ensured, the efficient positioning is realized, and the reduction of the operation time is facilitated.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a mandible lifting front edge bone taking guide plate.
Background
Dentition defects can occur due to trauma, age-related changes, caries, periodontitis, alveolar process, and the like, resulting in poor occlusion. Implant repair is an important repair means for dentition defects, and has certain requirements on the width and height of alveolar bones. The conventional alveolar ridge widening and heightening operations include alveolar ridge traction, bone powder + periosteum, autologous bone graft and the like. The autologous bone transplantation has certain requirements on the shaping of the bone implantation area. The bone taking area adopted by the autologous bone transplantation comprises a lifting front edge, a bone at the external oblique line of the mandible, an external side plate of the mandibular angle, a lifting front edge of the mandible, ilium and the like. The above bone-taking regions are all cortical bones except the ilium, and for the cortical bones, the above operations are often performed by intraoral surgical approaches for aesthetic needs. Because the operation visual field is limited, the operation space is narrow, a surgeon is difficult to determine an accurate osteotomy region in the process of bone extraction at the front edge of the lifting support, and the final operation effect is affected because the difference between the defect of the implantation region and the removal bone needs to be repeatedly abraded due to excessive or insufficient resection at the front edge of the lifting support in the operation.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a mandible lifting leading edge bone guide for solving the problems of the prior art.
In order to achieve the above and other related objects, the present invention provides a mandibular advancement leading edge bone removal guide plate, comprising a dentition support portion and a bone removal positioning portion, the dentition supporting part comprises a lower jaw dentition fitting cavity, the bone taking and positioning part comprises a circuitous part which is used for being fitted with a lifting support of a jaw bone and extending from the lingual side surface of the lifting support of the jaw bone to the buccal side surface of the jaw bone and a blocking part which is used for being fitted with the lingual side of the lifting support of the jaw bone and extending from the circuitous part to the mandibular angle direction, when the mandibular dentition fitting cavity is fitted to the mandibular dentition, the distance between the position of the mandibular ascending support front edge fitted by the circuitous part and the turning point of the mandibular ascending support front edge and the body part is 4-10 mm, the extending direction of the blocking part is matched with the jaw lifting and supporting front edge, the distance between the blocking part and the turning part of the jaw lifting and supporting front edge and the body part is 4-10 mm, and the dentition supporting part and the bone taking and positioning part are connected through a connecting part.
In some embodiments of the utility model, the shape of the mandibular dentition conformance cavity matches the shape of the mandibular dentition.
In some embodiments of the present invention, the mandibular dentition conformance cavity extends from a surface of the mandibular dentition in a direction toward a root thereof when fitted thereto.
In some embodiments of the utility model, the depth of the mandibular dentition conformance cavity is 4-6 mm.
In some embodiments of the utility model, the dentition support extends to the sixth lower incisor when the dentition support is fitted to the mandibular dentition.
In some embodiments of the utility model, the circuitous part has an extension greater than or equal to 1 cm.
In some embodiments of the utility model, the diameter of the cross section of the circuitous part is 1.5-2.5 mm.
In some embodiments of the utility model, the barrier extends for a length of 1cm or more.
In some embodiments of the utility model, the diameter of the cross section of the barrier is 2.5-3.5 mm.
In some embodiments of the utility model, the connector is adapted to pass around mucosal tissue behind the posterior mandibular teeth when the dentition support is engaged with the mandibular dentition.
Drawings
Fig. 1 is a schematic structural view of a mandible lifting front edge bone-taking guide plate provided by the utility model.
Fig. 2 is a schematic view showing the use of the mandible lifting front edge bone guide provided by the utility model.
Description of the element reference numerals
1 dentition support
11 lower jaw dentition fitting cavity
2 bone-taking positioning part
21 detour part
22 stop part
3 connecting part
4 bone area of extraction
5 lower jaw dentition
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1-2. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in figure 1, the utility model provides a mandible lifting front edge bone taking guide plate, which comprises a dentition supporting part 1 and a bone taking positioning part 2, the dentition supporting part 1 comprises a lower jaw dentition fitting cavity 11, the bone taking and positioning part 2 comprises a circuitous part 21 which is used for being fitted with a lifting and supporting jaw bone and extending from the lingual side surface of the lifting and supporting jaw bone to the buccal side surface of the lifting and supporting jaw bone, and a blocking part 22 which is used for being fitted with the lifting and supporting jaw bone and extending from the circuitous part 21 to the mandibular angle direction, when the mandibular dentition fitting cavity 11 is fitted to the mandibular dentition, the distance between the position of the mandibular ascending limb front edge fitted by the circuitous part 21 and the turning point of the mandibular ascending limb front edge and the body part is 4-10 mm, the extending direction of the blocking part 22 is matched with the jaw lifting and supporting front edge, the distance between the blocking part and the turning part of the jaw lifting and supporting front edge and the body part is 4-10 mm, and the dentition supporting part 1 and the bone taking and positioning part 2 are connected through the connecting part 3. When the mandibular ascending front edge bone taking guide plate provided by the utility model is used, as shown in fig. 2, the dentition supporting part 1 can be fixed on the mandibular dentition 5 through the mandibular dentition fitting cavity 11, because the contact area between the dentition supporting part 1 and the mandibular dentition 5 is large, the fixation of the dentition supporting part 1 is stable, the bone taking and positioning part 2 can be fitted on the mandibular ascending, because the circuitous part 21 extends from the lingual side surface to the buccal side surface of the mandibular ascending and supporting, and the position of the mandibular ascending and supporting front edge fitted by the circuitous part 21 has a certain distance with the mandibular angle, and the extending direction of the blocking part 22 is matched with the mandibular ascending and supporting front edge, and the blocking part has a certain distance with the mandibular ascending and supporting front edge, namely, the mandibular ascending and supporting can be cut along the inner side (the side close to the mandibular angle) of the circuitous part 21, and the blocking part 22 can play a certain role of blocking, thereby forming a bone extraction zone 4 of suitable depth and obtaining a bone body of suitable size.
In the mandibular advancement leading edge bone extraction guide provided by the present invention, the mandibular dentition conformity cavity 11 is generally shaped to match the mandibular dentition 5. The extending direction of the dentition support 1 is generally the same as the arrangement direction of the mandibular dentition 5, so that the subject can have a better comfort when fitting the dentition support 1 to the mandibular dentition 4. Generally, when the dentition support 1 is fitted to the mandibular dentition 5, the dentition support 1 may extend from the sixth lower incisors on both sides (i.e., the bilateral mandibles 6-6) to maintain the retention force. When the mandibular dentition engaging cavity 11 is engaged with the mandibular dentition 5, the mandibular dentition engaging cavity 11 may generally extend from the surface of the mandibular dentition toward the tooth root thereof, i.e., from top to bottom, engaging the mandibular dentition 5. Generally, the mandibular dentition conformance cavity 11 needs to be of a suitable depth to enable the dentition support 1 to adequately conform to the mandibular dentition 5 while ensuring a suitable contact area. For example, the depth of the mandibular dentition conformity cavity 11 may be 4-6 mm, 4-4.5 mm, 4.5-5 mm, 5-5.5 mm, or 5.5-6 mm, specifically the distance from the cusps to the veneer plane, which is also the depth of the characteristic retention.
In the mandible lifting front edge bone taking guide plate provided by the utility model, when the mandible dentition fitting cavity 11 is fitted to the mandible dentition, the position of the bone taking and positioning part 2 is generally corresponding to the position (for example, the bone taking area 4) on the mandible lifting, which is predetermined to be bone taken. The bone-extracting and positioning portion 2 may include a circuitous portion 21 for engaging with the maxillary lifting support and extending from the lingual surface to the buccal surface of the maxillary lifting support, as described above, since the circuitous portion 21 extends from the lingual surface to the buccal surface of the maxillary lifting support, it is generally fully engaged with the surface of the bone (e.g., the distance is less than or equal to 0.5mm), and the position of the leading edge of the maxillary lifting support engaged with the circuitous portion 21 is spaced from the turning point of the leading edge of the mandibular lifting support and the body, when the bone is extracted, the maxillary lifting support may be cut along the inner side (the side close to the mandibular angle) of the circuitous portion 21. The detour 21 may be a generally cylindrical structure extending in a certain direction, and its cross section may be appropriately changed as it extends. For example, the extension length of the circuitous part 21 can be more than or equal to 1cm usually, and the circuitous part can play a role in calibrating the bone-taking depth of the buccal side usually, the diameter of the cross section of the circuitous part 21 can be 1.5-2.5 mm, and the circuitous part can play a role in calibrating a line for cutting bones usually, the included angle formed by the axis of the circuitous part and the lifting and supporting front edge of the jaw bone is mainly the included angle of a real patient usually, the included angles of different patients are different, and a bone-taking ring can be stably clamped as a main evaluation mode. The inside of the detour 21 may generally form a suitable reference surface for cutting the jaw bone according to the reference surface. The bone-taking and positioning part 2 may further include a blocking part 22 for engaging with the lingual side of the maxillary lifting and extending from the circuitous part 21 to the mandibular angle direction, the extending direction of the blocking part 22 is matched with (e.g. may be substantially parallel to) the maxillary lifting and supporting front edge, which is generally fully engaged with the surface of the bone (e.g. the distance is less than or equal to 0.5mm), and there is a certain distance between the blocking part and the maxillary lifting and supporting front edge. As described above, when the jaw bone is cut along the inner side of the bypass portion 21, the blocking portion 22 may play a certain role in blocking, so as to form the bone-taking region 4 with a proper depth and obtain a bone body with a proper size. The blocking portion 22 may be a generally cylindrical structure extending in a direction, and its cross-section may be appropriately changed as it extends. For example, the extension length of the barrier 22 may be greater than or equal to 1cm, and the cross section of the barrier 22 may have a diameter of 2.5-3.5 mm, so as to calibrate the depth of the lingual bone extraction and simultaneously block the interference from the lingual mucosal tissue.
In the mandible lifting front edge bone-taking guide plate provided by the utility model, the position and the shape of the connecting part 3 can be properly adjusted for a person skilled in the art, and the connecting part is mainly used for forming proper connection between the dentition supporting part 1 and the bone-taking positioning part 2 so as to ensure the comfort of a subject. When the dentition support 1 is fitted to the mandibular dentition, the connecting body 3 bypasses the mucosal tissue behind the posterior mandibular teeth. For example, the connecting portion 3 may generally extend from the dentition support portion 1 to the bone-extraction positioning portion 2 (e.g., the boundary between the circuitous portion 21 and the blocking portion 22) with a suitable curvature, and the extending distance may generally be reduced as much as possible.
When the mandible lifting front edge bone guide plate provided by the utility model is prepared, the method generally comprises the following steps:
(1) acquiring skull CT data (Dicom format data) of a subject, importing the Dicom data into three-dimensional design software Proplan for threshold segmentation and carrying out three-dimensional reconstruction on mandible;
(2) taking a model of the dentition of the subject, or scanning the oral dentition of the subject by an iscan, and generating an STL three-dimensional mandibular dentition model by laser scanning to obtain the accurate dentition data (the proportion can be 1:1) of the subject;
(3) introducing the mandibular dentition STL model into a mandibular dentition model for matching, and replacing the mandibular dentition model reconstructed by Dicom data in CT with an accurate mandibular dentition model of a laser scanning model;
(4) selecting a proper position for lifting and supporting the mandible according to the defect size and the thickness of the defect area, properly taking a bone area, marking the size in the Proplan, respectively exporting the files from the Proplan, and generating new Stl;
(5) leading Stl for marking the mandibular advancement of the bone taking area into a geographic studio 3.0, designing a model of a dentition supporting part according to a mandibular dentition model, and constructing the position of a mandibular dentition fitting cavity on the model of the dentition supporting part, wherein the shape of the mandibular dentition fitting cavity 11 is matched with that of the mandibular dentition;
(6) importing the Dicom data into a Geomagic studio software, designing the shape and the position of the bone taking and positioning part 2 according to a bone taking area of the lifting and supporting of the mandible, wherein the bone taking area needs to be positioned between the mandible angle and the bone taking and positioning part 2, and properly designing the circuitous part 21 according to the surface radian of the lifting and supporting of the mandible to ensure that the circuitous part is attached to the lifting and supporting of the mandible;
(7) designing a connecting part 3, connecting the model of the dentition support part 1 and the model of the bone-taking positioning part 2 into a whole;
and then, taking the bone guide plate according to the designed and molded mandible lifting front edge to perform 3D printing to obtain a finished product. The mandible lifting front edge bone taking guide plate can be made of resin materials, and can be integrally formed through 3D printing during preparation.
The mandible lifting front edge bone taking guide plate provided by the utility model is matched with the mandible dentition of a subject through the mandible dentition fitting cavity of the dentition supporting part, and the uniqueness of the position relation between the mandible dentition of the subject and a bone taking area is utilized, so that the uniqueness and the accuracy of positioning the bone taking area by the bone taking positioning ring can be ensured, the efficient positioning is realized, and the reduction of the operation time is facilitated. In addition, the arrangement of the bone taking positioning part ensures the safe edge of the bone taking, the thickness of the bone block of the bone body to be taken can reach more than 1cm, the risk that adjacent teeth and nerve tissues are damaged in the operation is reduced, autologous bone with proper volume can be provided for later-stage planting and repairing, and the bone taking positioning part has a good industrialization prospect.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. It will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims.
Claims (10)
1. The mandibular ascending limb leading edge bone taking guide plate is characterized by comprising a dentition supporting part (1) and a bone taking positioning part (2), wherein the dentition supporting part (1) comprises a mandibular dentition attaching cavity (11), the bone taking positioning part (2) comprises a circuitous part (21) which is used for attaching with the mandibular ascending limb and extends from the lingual surface of the mandibular ascending limb to the buccal surface, and a blocking part (22) which is used for attaching with the lingual side of the mandibular ascending limb and extends from the circuitous part (21) to the mandibular angle direction, when the mandibular dentition attaching cavity (11) is attached to the mandibular dentition, the distance between the position of the maxillary ascending limb leading edge attached by the circuitous part (21) and the turning part of the mandibular ascending limb leading edge and the body part is 4-10 mm, the extending direction of the blocking part (22) is matched with the mandibular ascending limb leading edge, the distance between the blocking part (22) and the turning part of the mandibular ascending limb leading edge and the body part is 4-10 mm, the dentition supporting part (1) is connected with the bone taking positioning part (2) through a connecting part (3).
2. The mandibular advancement leading edge extraction guide of claim 1, wherein the mandibular dentition conformance cavity (11) is shaped to match the shape of the mandibular dentition.
3. The mandibular advancement leading edge extraction guide of claim 1, wherein the mandibular dentition abutment cavity (11) extends from the surface of the mandibular dentition in the direction of its root when it abuts the mandibular dentition.
4. The mandibular advancement leading edge bone extraction guide of claim 1, wherein the mandibular dentition conformity cavity (11) has a depth of 4 to 6 mm.
5. The mandibular ascension leading edge bone harvest guide of claim 1, wherein the dentition support (1) extends to the sixth lower socket tooth when the dentition support (1) is fitted to the mandibular dentition.
6. The mandibular advancement leading edge bone guide according to claim 1, wherein the circuitous portion (21) extends for a length of 1cm or more.
7. The mandibular advancement leading edge bone guide according to claim 1, wherein the diameter of the cross-section of the circuitous portion (21) is 1.5 to 2.5 mm.
8. The mandibular advancement leading edge bone removal guide of claim 1, wherein the stop (22) extends for a length of 1cm or more.
9. The mandibular advancement leading edge bone removal guide of claim 1, wherein the cross-section of the stop (22) is 2.5 to 3.5mm in diameter.
10. The mandibular advancement leading edge bone removal guide of claim 1, wherein the connecting portion (3) bypasses mucosal tissue behind the posterior mandibular teeth when the dentition support (1) is engaged with the mandibular dentition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121340749.2U CN215739562U (en) | 2021-06-17 | 2021-06-17 | Mandible lifting front edge bone taking guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121340749.2U CN215739562U (en) | 2021-06-17 | 2021-06-17 | Mandible lifting front edge bone taking guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215739562U true CN215739562U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121340749.2U Active CN215739562U (en) | 2021-06-17 | 2021-06-17 | Mandible lifting front edge bone taking guide plate |
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|---|---|
| CN (1) | CN215739562U (en) |
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2021
- 2021-06-17 CN CN202121340749.2U patent/CN215739562U/en active Active
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