一种用于根尖手术训练及研究的带髓牙模型
By designing a pulp-bearing tooth model, using materials with different radioactivity and adhesive layers to separate the tooth from the bone tissue, and combining a contoured cavity and a limiting part, the problem of inaccurate positioning of existing models during CBCT scanning was solved, achieving high-precision surgical training and research results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HOSPITAL OF STOMATOLOGY GUANGZHOU MEDICAL UNIVERSITY (YANGCHENG HOSPITAL OF GUANGZHOU MEDICAL UNIVERSITY)
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing apical surgery training models cannot accurately represent the location of various tissues during CBCT scans, failing to meet the needs of surgical training and research, especially when simulating high-risk anatomical areas, which cannot meet the high precision requirements of clinical surgery.
A pulp-containing tooth model was designed, employing various materials with different radiometric properties and 3D printing technology. An adhesive layer was used to separate the tooth from the bone tissue, and features such as the maxillary sinus, mandibular nerve canal, and pulp cavity were incorporated. CBCT scanning radiometric differences were used to accurately locate the tooth root boundary, and the anatomical structure radiometric properties and stability of the model were enhanced through the use of contoured cavities and limiting parts.
It improves the precision of surgical training and research, enhances the identification and protection of important anatomical structures, meets the needs of high-precision surgical training and research, and reduces the risk of damage to important structures.
Smart Images
Figure CN224519428U_ABST
Abstract
Claims
1. A tooth model with pulp for apical surgery training and research, characterized in that: The device includes a maxilla (1), a mandible (2), teeth (3) connected to the maxilla (1) and the mandible (2) respectively, oral mucosa (4), connecting plates (5) respectively disposed at the top of the maxilla (1) and the bottom of the mandible (2), and an adhesive layer. The maxilla (1) and the mandible (2) are respectively provided with alveolar sockets (6) for connecting the teeth (3). The adhesive layer covers the root of the teeth (3) and / or the alveolar sockets (6) and is used to bond the teeth (3) to the alveolar sockets (6) respectively. The maxilla (1) is provided with a maxillary sinus (7). The mandible (2) is provided with a mandibular nerve canal (8). The teeth (3) are provided with a pulp cavity (9). The connecting plate (5) is used to connect with a simulated head model.
2. The tooth model for apical surgery training and research according to claim 1, wherein: A contoured cavity (10) is provided between the tooth (3) and the alveolar socket (6), and the contoured cavity (10) is used to reflect the structure of the periodontal ligament in CT scans.
3. The tooth model for apical surgery training and research according to claim 2, wherein: It also includes several limiting parts (11) disposed in the alveolar socket (6), the limiting parts (11) abutting against the root of the tooth (3) and limiting the tooth (3).
4. The tooth model for apical surgery training and research according to claim 3, wherein: The limiting part (11) is disposed in the middle and / or upper part of the alveolar socket (6).
5. The tooth model for apical surgery training and research of claim 1, wherein: The straight-line distance between the apex of any of the teeth (3) and the maxillary sinus (7) is >1.5 mm.
6. The tooth model for apical surgery training and research of claim 1, wherein: The straight-line distance between the root apex of any of the teeth (3) and the mandibular nerve canal (8) is >1.5 mm.
7. The tooth model for apical surgery training and research of claim 1, wherein: The distance between the apical distances of the two teeth (3) located in the middle of the mandible (2) is >1.5 mm.
8. The tooth model for apical surgery training and research of any of claims 1-7, wherein: The maxillary sinus (7), the mandibular nerve canal (8), and the medullary cavity (9) are all hollow structures.
9. The tooth model for apical surgery training and research of claim 8, wherein: It also includes a prompting solution disposed in the mandibular nerve canal (8), wherein the oral mucosa (4) is sealed to the port of the mandibular nerve canal (8).
10. The tooth model for apical surgery training and research of claim 9, wherein: The oral mucosa (4) has a sealing part (12) on the inside, which is used to seal the port of the mandibular nerve canal (8).