Exploring Impact of Two Facial Scanning Registration Methods on Registration Accuracy of Virtual Patients under Maximum Smile Condition

doi:10.13701/j.cnki.kqyxyj.2025.10.012

Abstract

Abstract: Objective: To investigate the impact of different registration methods on the registration accuracy (including both precision and accuracy) of virtual patient facial scans under maximum smile conditions. Methods: Optical scanning data of 60 patients were collected using the Trios 3 intraoral scanner and the 3dMD facial scanner. Virtual patient scenarios in the maximum smile position were then constructed for the subjects using the forehead registration plate method and the facial landmark method, respectively. The differences in registration deviations between the two methods were analyzed through linear deviation measurement, and the registration accuracy of the two test groups was compared. Results: The forehead registration plate group demonstrated significantly better accuracy and precision than the facial landmark method, with statistically significant differences (P<0.05). Conclusion: Different facial scanning registration methods significantly affect accuracy when constructing virtual patient scenarios at maximal smile position. Compared to facial landmark method, forehead registration plate method achieves higher facial scan registration precision.

Key words: accuracy, facial scanning, stereophotography, virtual patient

YE Zihao, WEI Luming, WANG Penglai, LI Gan, YUAN Changyong. Exploring Impact of Two Facial Scanning Registration Methods on Registration Accuracy of Virtual Patients under Maximum Smile Condition[J]. Journal of Oral Science Research, 2025, 41(10): 907-911.

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