Comparative clinical study of the marginal discrepancy of fixed dental prosthesis fabricated by the milling-sintering method using a presintered alloy
10.4047/jap.2019.11.5.280
- Author:
Mijoo KIM
1
;
Jaewon KIM
;
Hang Nga MAI
;
Tae Yub KWON
;
Yong Do CHOI
;
Cheong Hee LEE
;
Du Hyeong LEE
Author Information
1. Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea. deweylee@knu.ac.kr
- Publication Type:Original Article
- Keywords:
Presintered;
Alloy;
Marginal discrepancy;
Clinical;
Fixed dental prosthesis;
Dental
- MeSH:
Alloys;
Clinical Study;
Crowns;
Dental Prosthesis;
Humans;
Methods;
Prostheses and Implants
- From:The Journal of Advanced Prosthodontics
2019;11(5):280-285
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: The present study was designed to examine the clinical fit of fixed dental prosthesis fabricated by the milling-sintering method using a presintered cobalt-chromium alloy. MATERIALS AND METHODS: Two single metal-ceramic crowns were fabricated via milling-sintering method and casting method in each of the twelve consecutive patients who required an implant-supported fixed prosthesis. In the milling-sintering method, the prosthetic coping was designed in computer software, and the design was converted to a non-precious alloy coping using milling and post-sintering process. In the casting method, the conventional manual fabrication process was applied. The absolute marginal discrepancy of the prostheses was evaluated intraorally using the triple-scan technique. Statistical analysis was conducted using Mann-Whitney U test (α=.05). RESULTS: Eight patients (66.7%) showed a lower marginal discrepancy of the prostheses made using the milling-sintering method than that of the prosthesis made by the casting method. Statistically, the misfit of the prosthesis fabricated using the milling-sintering method was not significantly different from that fabricated using the casting method (P=.782). There was no tendency between the amount of marginal discrepancy and the measurement point. CONCLUSION: The overall marginal fit of prosthesis fabricated by milling-sintering using a presintered alloy was comparable to that of the prosthesis fabricated by the conventional casting method in clinical use.
