Study on clinical efficacy of a 3D model based on crown-root integration in clear aligners
10.13591/j.cnki.kqyx.2023.02.006
- VernacularTitle:基于三维冠根整合模型在无托槽隐形矫治中的临床疗效研究
- Author:
YANG Jintao
1
;
FAN Dian
;
SU Ming
;
SHAN Danni
;
ZHENG Pengpeng
;
CHEN Hongyan
;
YANG Xinyu
;
ZHANG Liang
Author Information
1. School of Stomatology, Xuzhou Medical University, Xuzhou 221002, China
- Publication Type:Clinical Trial
- Keywords:
digital model； crown-root integration； clear aligner； clinical efficacy
- From:
STOMATOLOGY
2023;43(2):125-129
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the clinical effect of clear aligners in the anterior region in non-extraction cases by establishing a three-dimensional model of crown-root fusion to guide clinical application.
Methods:Eleven patients visiting the orthodontic department of Xuzhou Stomatological Hospital from December 2020 to December 2021 were collected, and the orthodontic plan was designed using Maestro 3D Dental Studio scheduling software to obtain the expected three-dimensional model of the patient's orthodontic treatment result. CBCT, intraoral scan, and 3D reconstruction software were used to create a postoperative model of the patient. The crown and root data were aligned in Geomagic Studio 2014, and differences in torque and axial inclination between the actual model after treatment and the predicted model of the anterior teeth before treatment were compared in 3-matic.
Results:The actual torque angles of the anterior teeth were all smaller than the predicted angles before treatment, with the highest realization rate of 77.55% for lateral incisors and the lowest of 60.70% for central incisors; the actual axial inclination angles of the anterior teeth were also smaller than the predicted angles before treatment, with the highest realization rate of 81.49% for central incisors and the lowest of 74.95% for cuspids.
Conclusion: A digital model of crown-root integration based on a combination of 3D reconstruction and intraoral scanning techniques is advantageous in assessing the efficacy of clear aligners. In non-extraction cases with clear aligner, the efficiency of movement is higher for small areas of the anterior region.
