A comparative study to measure the sagittal condylar inclination using mechanical articulator, virtual articulator and jaw tracking device
- Author:
Liya MA
1
;
Fei LIU
;
Jiansong MEI
;
Jiarui CHAO
;
Zhenyu WANG
;
Jiefei SHEN
Author Information
- Publication Type:Original Article
- From:The Journal of Advanced Prosthodontics 2023;15(1):11-21
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE:. To compare the sagittal condylar inclination (SCI) in dentate individuals measured by the different methods with mechanical articulator (MA), virtual articulator (VA), and a jaw tracking device (JTD) system.
MATERIALS AND METHODS:. A total of 22 healthy dentate participants were enrolled in this study. For MA workflow, the SCI was obtained by a semi-adjustable articulator with protrusive interocclusal records. The SCI was also set on a VA by aligning intraoral scan (IOS) with cone beam computed tomography (CBCT) and facial scan (FS), respectively. These virtual workflows were conducted in a dental design software, namely VAIOS-CBCT and VAIOS-FS . Meanwhile, a JTD system was also utilized to perform the measurement. Intraclass correlation was used to assess the repeatability within workflows. The bilateral SCI values were compared by Wilcoxon matched-pairs signed rank test for each workflow, and Kruskal-Wallis test and post hoc p-value Bonferroni correction were used to compare the differences among four workflows. The agreement of VAIOS-CBCT , VAIOS-FS , and JTD compared with MA was evaluated by Bland-Altman analysis.
RESULTS:. Intraclass correlation of the SCI revealed a high degree of repeatability for each workflow. There were no significant differences between the left and right sides (P > .05), except for VAIOS-CBCT (P = .028). Significant differences were not found between MA and VAIOS-FS (P > .05). Bland-Altman plots indicated VAIOS-CBCT , VAIOS-FS , and JTD were considered to substitute MA with high 95% limits of agreement.
CONCLUSION:. The workflow of VAIOS-FS provided an alternative approach to measure the SCI compared with MA.
