The Journal of the Korean dental association (대한치과의사협회지)

The Korean Dental Association (대한치과의사협회)
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Evaluation of marginal fit of monolithic zirconia restoration by digital impression

디지털 방식을 이용하여 제작한 전부 지르코니아 수복물의 변연 적합도 평가

  • Yun, Mi-Jung (Department of Prosthodontics, College of Dentistry, Pusan National University) ;
  • Kim, So-Yeun (Dental Clinic Center, Pusan National University Hospital) ;
  • Kang, Eun-Sook (Department of Prosthodontics, In-Je University Haeundae Paik Hospital)
  • 윤미정 (부산대학교 치의학전문대학원 치과보철학교실) ;
  • 김소연 (부산대학교병원 치과진료센터) ;
  • 강은숙 (인제대학교 해운대백병원 치과보철과)
  • Received : 2018.04.06
  • Accepted : 2018.06.11
  • Published : 2018.07.01
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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 $133.81{\pm}36.46{\mu}m$ for the conventional impression technique, $90.07{\pm}9.47{\mu}m$ 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.

Keywords

Acknowledgement

Supported by : 부산대학교

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