Multi-tooth integrated minimally invasive extraction guide plate
By using an integrated minimally invasive extraction guide plate for supernumerary teeth, and employing 3D printing technology for precise positioning and support structures, the issues of precision and safety in supernumerary tooth extraction surgery have been resolved. This has enabled efficient and safe minimally invasive tooth extraction procedures, reducing patient discomfort and postoperative reactions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA MEDICAL UNIVERSITY GENERAL HOSPITAL
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-21
AI Technical Summary
Current procedures for extracting supernumerary teeth present challenges such as difficulty in precise positioning, obstructed surgical field, high risk of damage to surrounding tissues, long operation time, and difficulty in patient cooperation. Traditional positioning guides cannot effectively block the gingival tissue flap, lack opening support, rely on the doctor's experience, and have unstable results.
The procedure employs an integrated minimally invasive extraction guide for supernumerary teeth, comprising a support column, an occlusal positioning plate, a support block, and a blocking positioning block. Precise positioning is achieved through 3D printing technology. The support column and occlusal positioning plate maintain an open state, while the blocking positioning block pushes, pulls, and rolls the gingival tissue. The concave flap groove avoids tissue obstruction, and the addition of a silicone pad increases positioning flexibility and comfort.
It enables precise and minimally invasive tooth extraction, reduces surgical risks, improves operational efficiency, reduces tissue damage, enhances patient comfort and safety, and shortens postoperative recovery time.
Smart Images

Figure CN224523285U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of oral medical device technology, specifically relating to an integrated minimally invasive extraction guide for supernumerary teeth. Background Technology
[0002] In the extraction of supernumerary teeth, precise positioning and a good surgical field are crucial. Current traditional extraction guides are handmade, which has drawbacks such as long production time, inconsistent accuracy, and limited functionality. When handling complex cases, they lack opening support and the ability to effectively block gingival tissue flaps, often posing challenges to accuracy and safety. Furthermore, traditional methods rely heavily on the surgeon's clinical experience, and the removal of alveolar bone can easily damage surrounding tissues and adjacent tooth roots. The procedures are also lengthy, prone to postoperative adverse reactions, and children often struggle to cooperate for extended periods, limiting treatment effectiveness.
[0003] Chinese patent CN202110197184.5 discloses a positioning guide for the extraction of impacted supernumerary teeth and its manufacturing method. The positioning device disclosed therein cannot effectively block the gingival tissue flap, which can droop over the positioning device into the window, affecting subsequent operations. It also does not provide opening support, and prolonged use will increase the burden on the child's mouth.
[0004] Therefore, how to provide a minimally invasive extraction guide plate for multiple teeth is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the present invention provides an integrated minimally invasive extraction guide for supernumerary teeth, which can maintain the patient's open mouth and at the same time provide positioning conditions for doctors to perform precise surgery.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: an integrated minimally invasive extraction guide for supernumerary teeth, comprising:
[0007] Two support pillars are arranged close to the patient's molar areas on both sides;
[0008] Occlusal positioning plate, the configuration of which is adapted to the shape of the patient's dental arch, the two ends of which extend to the molar areas on both sides of the patient, and the two pillars are integrally formed at the two ends of the occlusal positioning plate.
[0009] The support block has two sets and is integrally formed at the end of the support column away from the occlusal positioning plate. The support column works with the occlusal positioning plate and the support block to maintain the patient's open position.
[0010] A blocking positioning block is fixed to the concave side of the occlusal positioning plate. The blocking positioning block is provided with a guide hole corresponding to the supernumerary tooth surgical area. The outer wall of the blocking positioning block is provided with an inner flap groove for pushing, pulling and rolling the gingival tissue.
[0011] The beneficial technical effects of this utility model are as follows: the support column, together with the occlusal positioning plate and the bearing block, can maintain the patient's open mouth state, reduce the burden on the patient's mouth, and at the same time disperse the patient's biting force, prevent the guide plate from shifting, reduce the patient's fatigue from prolonged mouth opening, and provide sufficient space for surgical operation. The occlusal positioning plate is adapted to the shape of the patient's dental arch and can be occluded and positioned on the patient's maxillary or mandibular teeth, playing a basic positioning role. The positioning block is used to push, pull, and roll the gingival tissue, and the concave flap groove can roll the gingival tissue outward, preventing the gingival tissue from drooping into the guide hole beyond the occlusal positioning plate, thereby avoiding affecting the operation in the surgical area.
[0012] Preferably, the support column, the interlocking positioning plate, and the bearing block are integral connection structures formed by 3D printing of resin material.
[0013] The resulting technical benefits are: the support column, occlusal positioning plate, and load-bearing block are integrally formed by 3D printing, resulting in a higher degree of conformity. Based on the machine tomography scan results, the location of the supernumerary tooth surgical area can be determined more accurately, facilitating subsequent precise tooth extraction operations.
[0014] Preferably, the support block is provided with a tooth socket for fitting a maxillary or mandibular tooth, and a silicone pad is fixedly provided on the surface of the tooth socket.
[0015] The resulting technical effect is that silicone pads are placed on the grooves of the support block to increase positioning flexibility (the actual matching degree may have some errors, and the silicone pads can make up for this error) and also to prevent the components from damaging the gums.
[0016] Preferably, the bite positioning plate is provided with a plurality of bite grooves arranged thereon, and a silicone pad is fixedly provided on the groove surface of the plurality of bite grooves.
[0017] The resulting technical effects are: the occlusal grooves on the occlusal positioning plate can be occluded and positioned on the maxillary or mandibular teeth, providing basic positioning; the silicone pads on the occlusal grooves can prevent gingival damage and also prevent slippage during surgery, increasing the reliability of occlusal positioning and stabilizing the patient's mouth opening.
[0018] Preferably, the wall of the guide hole corresponding to the surgical area of the blocking positioning block is an outwardly convex C-shape.
[0019] The resulting technical effect is that, given a limited opening area, the outwardly convex C-shaped opening wall increases the field of vision at the bottom of the opening and also increases the operative space for palpating teeth in the supernumerary tooth area.
[0020] Preferably, the support block is located in the molar region on both sides of the patient.
[0021] The resulting technical effect is that the support block is located in the molar area on both sides of the patient, and is not the same structure as the occlusal positioning plate. The smaller size of the support block can improve the flexibility of use and also allow for precise force application. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of a minimally invasive extraction guide plate for multiple teeth according to this utility model. Figure One ;
[0023] Figure 2 This is a schematic diagram of the structure of a minimally invasive extraction guide plate for multiple teeth according to this utility model. Figure Two ;
[0024] Figure 3 This is a schematic diagram of the structure of a minimally invasive extraction guide plate for multiple teeth according to this utility model. Figure Three ;
[0025] Figure 4 This is a schematic diagram of the structure of a minimally invasive extraction guide plate for multiple teeth according to this utility model. Figure Four .
[0026] 1. Support column, 2. Occlusal positioning plate, 21. Occlusal groove, 3. Bearing block, 31. Tooth socket, 4. Blocking positioning block, 41. Inner concave valve groove, 42. Guide hole. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] See appendix to this utility model Figures 1 to 4 According to an embodiment of the present invention, an integrated minimally invasive extraction guide for supernumerary teeth includes:
[0029] Support 1 consists of two supports positioned close to the patient's molar regions on both sides; the length and connection angle of support 1 need to be determined based on the patient's surgical needs.
[0030] Occlusal positioning plate 2, the configuration of occlusal positioning plate 2 is adapted to the shape of the patient's dental arch, the two ends of occlusal positioning plate 2 extend to the molar area on both sides of the patient, and the two pillars 1 are integrally formed on the two ends of the occlusal positioning plate 2; occlusal positioning plate 2 can bite on the maxillary teeth or the mandibular teeth, depending on the specific supernumerary tooth surgical area.
[0031] The support block 3 has two sets and is integrally formed on the end of the support column 1 away from the occlusal positioning plate 2. The support column 1 is used in conjunction with the occlusal positioning plate 2 and the support block 3 to maintain the patient's open position.
[0032] The blocking positioning block 4 is fixed in the middle of the concave side of the occlusal positioning plate 2. The blocking positioning block 4 is provided with a guide hole 42 corresponding to the supernumerary tooth surgical area. The outer wall of the blocking positioning block 4 is provided with an inner concave flap groove 41 for pushing, pulling and rolling the gingival tissue. Traditional blocking plates may cause the gingival tissue to droop, which will affect the surgical operation. The inner concave flap groove can roll the gingival tissue in the opposite direction to avoid affecting the intraoperative operation.
[0033] The size of the blocking positioning block 4 is customized according to the location of the supernumerary tooth and the surrounding anatomical structure. Its edge fits the contour of the soft tissue around the supernumerary tooth, which can closely cover and push away the surrounding tissue. During the supernumerary tooth extraction surgery, it blocks the tissue flap and acts as a barrier. It can effectively isolate and push away the surrounding soft tissues such as gums and mucosa to prevent them from obstructing the surgical field of vision. The location of the supernumerary tooth can be clearly seen, which is convenient for precise operation and reduces the chance of accidental soft tissue damage.
[0034] The blocking positioning block 4 needs to have a certain strength and toughness, such as acrylic resin, so that it will not easily deform or break during the surgical procedure. This ensures that the blocking positioning block can maintain a stable blocking state, and that the exposed functional areas of the supernumerary teeth can maintain accurate shape and position, providing reliable support for the surgery.
[0035] In other embodiments, the support 1, the occlusal positioning plate 2, and the support block 3 are integral connection structures formed by 3D printing of resin material. Based on the patient's oral CBCT data, a three-dimensional model is created using professional software to accurately determine the position of the supernumerary teeth. The design is based on this to ensure that the occlusal positioning plate fits precisely with the patient's oral anatomy and guides the surgical instruments to accurately enter the surgical area.
[0036] Specifically, high-strength resin or high-performance photosensitive resin is used, which has good biocompatibility, mechanical strength and stability, can meet the requirements of surgical operation, and will not have adverse effects on the patient's oral tissues.
[0037] Digital 3D printing, utilizing computer-aided design, computer-aided manufacturing technology, and cone-beam computed tomography (CT) scanning, is used to extract affected supernumerary teeth. During the operation, a digital positioning guide allows for rapid positioning and exposure of the supernumerary teeth while avoiding adjacent important anatomical structures.
[0038] In some other specific embodiments, the support block 3 is provided with a tooth socket 31 for fitting the maxillary or mandibular teeth, and a silicone pad is fixed on the surface of the tooth socket 31.
[0039] In other specific embodiments, the occlusal positioning plate 2 is provided with a plurality of occlusal grooves 21 arranged thereon, and silicone pads are fixed on the groove surfaces of the plurality of occlusal grooves 21 to relieve fatigue and mucosal pressure from prolonged mouth opening, while also providing adjustment space for patients to wear flexibly.
[0040] The silicone pads on the alveolar bone and occlusal groove prevent slippage during surgery, stabilize the patient's mouth opening, and use the contact between the support block and the opposing teeth to form leverage support, disperse occlusal force, prevent displacement of the occlusal positioning plate, reduce patient fatigue from prolonged mouth opening, and provide sufficient space for surgical operation.
[0041] In other embodiments, the wall of the guide hole corresponding to the blocking positioning block 4 is outwardly convex C-shaped.
[0042] Specifically, the support block 3 is located in the molar area on both sides of the patient.
[0043] Clinical advantages:
[0044] It enables precise and minimally invasive procedures, reduces surgical risks, facilitates efficient operation, optimizes surgical procedures, and improves patient comfort and safety. Minimally invasive procedures reduce tissue damage, resulting in less postoperative pain and swelling, and faster healing.
[0045] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.
[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A minimally invasive extraction guide plate for multiple teeth, characterized in that, include: The pillar (1) has two pillars and is arranged close to the molar area on both sides of the patient; Occlusal positioning plate (2), the configuration of the occlusal positioning plate (2) is adapted to the shape of the patient's dental arch, the two ends of the occlusal positioning plate (2) extend to the molar areas on both sides of the patient, and the two pillars (1) are integrally formed at the two ends of the occlusal positioning plate (2). The support block (3) has two sets and is integrally formed at one end of the support column (1) away from the occlusal positioning plate (2). The support column (1) cooperates with the occlusal positioning plate (2) and the support block (3) to maintain the patient's open state. The blocking positioning block (4) is fixed on the concave side of the occlusal positioning plate (2). The blocking positioning block (4) is provided with a guide hole (42) corresponding to the supernumerary tooth surgical area. The outer side wall of the blocking positioning block (4) is provided with an inner concave flap groove (41) for pushing, pulling and rolling the gingival tissue.
2. The integrated minimally invasive extraction guide for multiple teeth according to claim 1, characterized in that, The support column (1), the interlocking positioning plate (2), and the bearing block (3) are an integral connection structure formed by 3D printing of resin material.
3. The integrated minimally invasive extraction guide for multiple teeth according to claim 1, characterized in that, The support block (3) is provided with a tooth socket (31) for fitting maxillary or mandibular teeth, and a silicone pad is fixedly provided on the surface of the tooth socket (31).
4. The integrated minimally invasive extraction guide for multiple teeth according to claim 1, characterized in that, The bite positioning plate (2) is provided with a plurality of bite grooves (21) arranged thereon, and a silicone pad is fixedly provided on the groove surface of the plurality of bite grooves (21).
5. The integrated minimally invasive extraction guide for multiple teeth according to claim 1, characterized in that, The wall of the guide hole corresponding to the blocking positioning block (4) is outwardly convex C-shaped.
6. The integrated minimally invasive extraction guide for multiple teeth according to claim 1, characterized in that, The support block (3) is located in the molar area on both sides of the patient.