The computer-aided design and manufacturing of individualized miniscrew surgical guides based on a high-precision three-dimensional integrated digital maxillodental model

doi:10.3969/j.issn.2095-4344.0711

Abstract

Abstract:

BACKGROUND: Surgical guides designed based on a three-dimensional cone-beam CT (CBCT) model have been reported. However, CBCT cannot remodel fine soft tissue such as gums, and it can only be used to design a simple dental retainer with relatively poor stability.

OBJECTIVE: To establish a high-precision three-dimensional (3D) integrated maxillodental model by matching CBCT model with 3D digital maxillodental model using 3D automatic registration method, based on which, we designed and manufactured individualized miniscrew surgical guides.

METHODS: CBCT maxillodental models and laser-scanned dentition models obtained from six malocclusion cases were matched and overlapped using the 3D automatic registration method to fabricate the 3D integrated maxillodental model. Then, we accurately positioned and virtually implanted a micro-implant into the 3D integrated maxillodental model. Subsequently we prepared a high-precision individualized resin surgical guide by rapid prototyping technology. The inner diameter of the guide track was detected by a vernier caliper. Patients tried on the resin surgical guide, and then occlusion condition, guide seating and retention were detected.

RESULTS AND CONCLUSION: Due to the high-precision registration of the model, all the resin surgical guide plates were suitable. The plate retention was enhanced after tooth clinching, and all the patients felt comfort when wearing the surgical guide plate, with no compression or other discomforts. The inner diameter of the guide track was (1.79±0.23) mm, and the measurement error was not statistically significant (P > 0.05). These findings demonstrate that the high-precision surgical guide plate based on the high-precision 3D integrated model can provide the foundation for further investigations on the clinical application of surgical guides.

中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

Key words: Dental Implants, Orthodontic Anchorage Procedures, Computer-Aided Design, Tissue Engineering

CLC Number:

R318

Chen Yan-qu, Tang Min, Huang Xuan-ping, Zhou Feng-cheng, Wang Jia-xi. The computer-aided design and manufacturing of individualized miniscrew surgical guides based on a high-precision three-dimensional integrated digital maxillodental model[J]. Chinese Journal of Tissue Engineering Research, 2018, 22(10): 1529-1533.

Figures/Tables 2

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