Accuracy of interocclusal record established by different occlusal scans
10.14368/jdras.2024.40.3.142
- Author:
Minjee KANG
1
;
Cheong-Hee LEE
;
Kyu-Bok LEE
;
So-Yeun KIM
;
Du-Hyeong LEE
Author Information
1. Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
- Publication Type:Original Article
- From:Journal of Dental Rehabilitation and Applied Science
2024;40(3):142-148
- CountryRepublic of Korea
- Language:English
-
Abstract:
Purpose:The purpose of this study was to investigate the accuracy of digital mounting with occlusal scans in the interocclusal record for a full-mouth fixed prosthetic treatment condition.
Materials and Methods:The entire maxillary teeth were prepared in a dentiform model and attached to an articulator in maximum intercuspation. Temporary crowns were fabricated and occlusion was adjusted. After scanning the arch with tooth preparation, digital mounting was performed using an occlusion scan of the anterior or posterior teeth areas. The accuracy of the positioned jaw relation was evaluated three-dimensionally through positional deviation and angular error of the occlusal plane. Afterwards, the same procedure was repeated on the partially edentulous model to evaluate the accuracy of digital interocclusal record. Kruskal-Wallis test and Mann-Whitney U test were used for statistical analysis, and the significance level was set at 0.05.
Results:There was no significant difference in the positional error at the centerof the arch in the digitally established jaw relation depending on the scan area used and remaining tooth conditions (P = 0.53). Theangular error of the occlusal plane was larger when the anterior teeth were used as the overlapping area, and a smaller error value was observed when both posterior teeth were used as the overlapping area (P < 0.001).
Conclusion:The use of bilateral posterior occlusal scans is recommended when digitally mounting the jaw relation established with temporary teeth during full-mouth fixed prosthetic treatment.
