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윤미정1, 김소연2, 강은숙3 |
1부산대학교 치의학전문대학원 치과보철학교실
2부산대학교병원 치과진료센터
3인제대학교 해운대백병원 치과보철과 |
| Evaluation of marginal fit of monolithic zirconia restoration by digital impression |
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Mi-Jung Yun1, So-Yeun Kim2, Eun-Sook Kang3 |
1Department of Prosthodontics, College of Dentistry, Pusan National University
2Dental Clinic Center, Pusan National University Hospital
3Department of Prosthodontics, In-Je University Haeundae Paik Hospital |
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| Abstract |
Purpose
: The purpose of this study was to compare the marginal fit of monolithic zirconia restorations fabricated form the conventional and the digital impression technique. Materials and methods : Ten patients were restored with monolithic zirconia restorations fabricated from the digital and the conventional impression technique. Before definitive insertion, silicone replicas were produced from all twenty crowns. The silicone replicas were cut in three sections; each section was evaluated at two points. The measurement was carried out by using a measuring microscope (Olympus BX 51) and I-Solution. Data from the silicone replica scores were analyzed by Shapiro-Wilk test for normal distribution and the t-test for equality of two population's mean. All tests were performed with alpha-level of 0.05. Results : The average marginal gaps of monolithic zirconia restorations were 133.81pm36.46µm for the conventional impression technique, 90.07pm9.47µm for the digital impression technique. No statistical differences were found between the two impression techniques Conclusion : Both prostheses presented clinically acceptable results with comparing the marginal fit. |
| Key Words:
digital impression;marginal fit;monolithic zirconia; |
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