Direct metal laser sintering 방식을 이용하여 제작한 다양한 고정성 보철물 수복 증례
Fixed prostheses fabricated by direct metal laser sintering system: case report
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Direct metal laser sintering (DMLS) 방식은 3D 프린팅 중 한 방식으로, 재료를 쌓아가면서 레이저를 이용하여 선택적으로 sintering하는 방식이다. 이는 주조 방식에서 문제되는 결손과 뒤틀림을 방지할 수 있으며 절삭 가공 방식으로 제작하기 어려운 복잡한 구조물을 제작할 수 있다. 본 증례들은 DMLS 방식을 이용하여 지대치 간 길이가 긴 고정성 보철물, 포스트 등 다양한 고정성 보철물을 제작하여 수복하였고, 주기적인 관찰 결과 심미적, 기능적으로 만족할만한 결과를 얻었기에 이를 보고하는 바이다.
Abstract
Nowadays, 3 dimentional (3D) printing, especially Direct Metal Laser Sintering (DMLS) system is used in dentistry. DMLS system has recently been introduced for fabrication metal framework for metal ceramic crowns to overcome the disadvantages of the casting method and computer aided design/computer aided manufacturing (CAD/CAM) milling system. DMLS system uses a hightemperature laser beam to selectively heat a substructure metal powder based on the CAD data with the framework design. A thin layer of the beamed area becomes fused, and the metal framework is completed by laminating these thin layers. Utilizing DMLS system to fabricate fixed prostheses is expected to achieve free-from shaping without mold and limitations from cutting tools, fabricate prostheses with complex geometry, prevent distortion and fabrication defects that inherent to conventional fabrication methods. The purpose of this case report is to demonstrate various fixed prostheses such as long span fixed prostheses, post to achieve satisfactory results in functional and esthetic aspects.
참고문헌 (12)
- Abduo J, "Fit of zirconia fixed partial denture: a systematic review", J Oral Rehabil, 37, pp.866~876 (2010)
- Pimenta MA, "Evaluation of marginal and internal fit of ceramic and metallic crown copings using x-ray microtomography (micro-CT) technology", J Prosthet Dent, 114, pp.223~228 (2015)
- Miyazaki T, "A review of dental CAD", CAM: current status and future perspectives from 20 years of experience, 2009, pp.28, 44~56
- Takaichi A, "Microstructures and mechanical properties of Co29Cr-6Mo alloy fabricated by selective laser melting process for dental applications", J Mech Behav Biomed Mater, 21, pp.67~76 (2013)
- Traini T, "Direct laser metal sintering as a new approach to fabrication of an isoelastic functionally graded material for manufacture of porous titanium dental implants", Dent Mater, 24, pp.1525~1533 (2008)
- Deckard C, "Process and control issues in selective laser sintering", ASME Prod Eng Div (Publication) PED, 33, pp.191~197 (1988)
- 박종경, "Accuracy evaluation of metal copings fabricated by computer-aided milling and direct metal laser sintering systems", The Journal of Advanced of Prosthodontics, 7(2), pp.122~128 (2015), 대한치과보철학회[DOI]
- Simel Ayyıldız, "Annealing of Co-Cr dental alloy: effects on nanostructure and Rockwell hardness", The Journal of Advanced of Prosthodontics, 5(4), pp.471~478 (2013), 대한치과보철학회[DOI]
- Bilgin MS, "Comparison of fracture resistance between cast, CAD", CAM milling, and direct metal laser sintering metal post systems, 2016, pp.60, 23~28
- Ucar Y, "Internal fit evaluation of crowns prepared using a new dental crown fabrication technique: laser-sintered Co–Cr crowns", J Prosthet Dent, 102, pp.253~259 (2009)
- Örtorp A, "The fit of cobalt-chromium three-unit fixed dental prostheses fabricated with four different techniques: a comparative in vitro study", Dent Mater, 27, pp.356~363 (2011)
- Beuer F, "Digital dentistry:an overview of recent developments for CAD", CAM generated restorations, 2008, pp.204, 505~511