DOI QR코드

DOI QR Code

디지털 장비의 중첩기능을 이용하여 단일체 수복물의 교합조정을 최소화한 증례

Superimposition: a simple method to minimize occlusal adjustment of monolithic restoration

  • 최창훈 (연세대학교 강남세브란스병원 치과보철과) ;
  • 김선재 (연세대학교 강남세브란스병원 치과보철과)
  • Choi, Changhun (Department of Prosthodontics, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University) ;
  • Kim, Sunjai (Department of Prosthodontics, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University)
  • 투고 : 2015.08.10
  • 심사 : 2015.10.02
  • 발행 : 2016.07.29

초록

최근 CAD-CAM과 지르코니아를 이용한 보철물의 제작이 증가하고 있으며 구강스캐너의 발달로 임상 및 기공과정이 단순화되고 있다. 균열치 혹은 치아의 일부가 파절된 경우, 구강스캐너를 사용하여 치아 삭제 전에 치아의 형태를 미리 스캔하고, 추후 수복물 제작 시 중첩을 통해 단일체 지르코니아 전장관을 제작하면 원래 환자의 자연치 형태와 교합을 재현할 수 있다. 본 증례에서는 균열 및 파절된 치아에서 구강 스캐너, CAD-CAM 및 단일체 지르코니아 전장관을 사용하여 삭제 전 치아의 형태와 교합을 재현한 수복물을 제작하였으며, 교합조정을 최소화할 수 있었다. 또한 임상적으로 기능적이고 심미적인 결과를 얻을 수 있었다.

The development of translucent zirconia enabled clinicians to choose a monolithic zirconia crown as one treatment modality in the posterior dentition. Careful occlusal adjustments are recommended for monolithic zirconia crowns because grinding zirconia inevitably causes phase transformation, which may deteriorate mechanical properties. intraoral scanners enable the clinician to scan and superimpose a complete tooth structure before preparation onto the prepared abutment. This technique helps to reproduce the original tooth form and occlusion of the patient. In this case report, prostheses were fabricated for patients with cracked or fractured tooth by applying intraoral scanner, Computer aided design-computer aided manufacturing (CAD-CAM) and monolithic zirconia crown to reproduce the occlusion of original tooth and to minimize occlusal adjustment. The clinical results were satisfactory in both esthetic and functional aspects.

키워드

참고문헌

  1. Fukui K, Kaneuji A, Sugimori T, Ichiseki T, Kitamura K, Matsumoto T. Wear comparison between a highly cross-linked polyethylene and conventional polyethylene against a zirconia femoral head: minimum 5-year follow-up. J Arthroplasty 2011;26:45-9. https://doi.org/10.1016/j.arth.2009.11.005
  2. Oilo M, Kvam K, Gjerdet NR. Simulation of clinical fractures for three different all-ceramic crowns. Eur J Oral Sci 2014;122:245-50. https://doi.org/10.1111/eos.12128
  3. Triwatana P, Nagaviroj N, Tulapornchai C. Clinical performance and failures of zirconia-based fixed partial dentures: a review literature. J Adv Prosthodont 2012;4:76-83. https://doi.org/10.4047/jap.2012.4.2.76
  4. Miyazaki T, Nakamura T, Matsumura H, Ban S, Kobayashi T. Current status of zirconia restoration. J Prosthodont Res 2013;57:236-61. https://doi.org/10.1016/j.jpor.2013.09.001
  5. Kohorst P, Junghanns J, Dittmer MP, Borchers L, Stiesch M. Different CAD/CAM-processing routes for zirconia restorations: influence on fitting accuracy. Clin Oral Investig 2011;15:527-36. https://doi.org/10.1007/s00784-010-0415-9
  6. Fasbinder DJ, Poticny DJ. Accuracy of occlusal contacts for crowns with chairside CAD/CAM techniques. Int J Comput Dent 2010;13:303-16.