Reconstruction and measurement of a digital dental model using grating projection and reverse engineering
10.7518/hxkq.2015.01.016
- VernacularTitle:光栅投影技术及逆向工程在重建和测量牙颌数字化模型中的应用
- Author:
Zhenzhen WANG
1
;
Yi LU
;
Jun SONG
;
Jun CHEN
;
Qin ZHOU
Author Information
1. 西安交通大学口腔医院修复科
- Keywords:
grating projection;
reverse engineering;
dental model;
three-dimensional reconstruction;
three-dimen-sional measurement
- From:
West China Journal of Stomatology
2015;(1):71-74
- CountryChina
- Language:Chinese
-
Abstract:
Objective This work lays the foundation for establishing a digital model database with normal occlusion. A digital dental cast is acquired through grating projection, and model features are measured through reverse engineering. Methods The grating projection system controlled by a computer was projected onto the surface of a normal dental model. Three-dimensional contour data were obtained through multi-angle shooting. A three-dimensional model was constructed, and the model features were analyzed by using reverse engineering. The digital model was compared with the plaster model to deter-mine the accuracy of the measurement system. Results The structure of three-dimensional reconstruction model was clear. The digital models of two measurements exhibited no significant difference (P>0.05). When digital and plaster models were measured, we found that the crown length and arch width were not statistically different (P>0.05), whereas the difference between the crown width and arch length was statistically significant (P<0.05). Conclusion The reconstruction of a digital model by using the grating projection technique and reverse engineering can be used for dental model measurement in clinic al and scientific research and can provide a scientific method for establishing a digital model database with normal occlusion.
