DOI QR코드

DOI QR Code

Direct metal laser sintering 방식을 이용하여 제작한 다양한 고정성 보철물 수복 증례

Fixed prostheses fabricated by direct metal laser sintering system: case report

  • 백주원 (단국대학교 치과대학 치과보철학교실) ;
  • 신수연 (단국대학교 치과대학 치과보철학교실)
  • Baek, Ju-Won (Department of Prosthodontics, School of Dentistry, Dankook University) ;
  • Shin, Soo-Yeon (Department of Prosthodontics, School of Dentistry, Dankook University)
  • 투고 : 2016.08.16
  • 심사 : 2016.09.19
  • 발행 : 2016.09.30

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.

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 high-temperature 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.

키워드

참고문헌

  1. Abduo J, Lyons K, Swain M. Fit of zirconia fixed partial denture: a systematic review. J Oral Rehabil 2010;37:866-76. https://doi.org/10.1111/j.1365-2842.2010.02113.x
  2. Pimenta MA, Frasca LC, Lopes R, Rivaldo E. Evaluation of marginal and internal fit of ceramic and metallic crown copings using x-ray microtomography (micro-CT) technology. J Prosthet Dent 2015; 114:223-8. https://doi.org/10.1016/j.prosdent.2015.02.002
  3. Miyazaki T, Hotta Y, Kunii J, Kuriyama S, Tamaki Y. A review of dental CAD/CAM: current status and future perspectives from 20 years of experience. Dent Mater J 2009;28:44-56. https://doi.org/10.4012/dmj.28.44
  4. Takaichi A, Suyalatu, Nakamoto T, Joko N, Nomura N, Tsutsumi Y, Migita S, Doi H, Kurosu S, Chiba A, Wakabayashi N, Igarashi Y, Hanawa T. Microstructures and mechanical properties of Co-29Cr-6Mo alloy fabricated by selective laser melting process for dental applications. J Mech Behav Biomed Mater 2013;21:67-76. https://doi.org/10.1016/j.jmbbm.2013.01.021
  5. Traini T, Mangano C, Sammons RL, Mangano F, Macchi A, Piattelli A. 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 2008;24:1525-33. https://doi.org/10.1016/j.dental.2008.03.029
  6. Deckard C, Beaman JJ. Process and control issues in selective laser sintering. ASME Prod Eng Div (Publication) PED 1988;33:191-7.
  7. Park JK, Lee WS, Kim HY, Kim WC, Kim JH. Accuracy evaluation of metal copings fabricated by computer-aided milling and direct metal laser sintering systems. J Adv Prosthodont 2015;7:122-8. https://doi.org/10.4047/jap.2015.7.2.122
  8. Ayyildiz S, Soylu EH, Ide S, Kilic S, Sipahi C, Pi kin B, Gokce HS. Annealing of Co-Cr dental alloy: effects on nanostructure and Rockwell hardness. J Adv Prosthodont 2013;5:471-8. https://doi.org/10.4047/jap.2013.5.4.471
  9. Bilgin MS, Erdem A, Dilber E, Ersoy I. Comparison of fracture resistance between cast, CAD/ CAM milling, and direct metal laser sintering metal post systems. J Prosthodont Res 2016;60:23-8. https://doi.org/10.1016/j.jpor.2015.08.001
  10. Ucar Y, Akova T, Akyil M, Brantley WA. Internal fit evaluation of crowns prepared using a new dental crown fabrication technique: laser-sintered Co-Cr crowns. J Prosthet Dent 2009;102:253-9. https://doi.org/10.1016/S0022-3913(09)60165-7
  11. Ortorp A, Jonsson D, Mouhsen A, Vult von Steyern P. The fit of cobalt-chromium three-unit fixed dental prostheses fabricated with four different techniques: a comparative in vitro study. Dent Mater 2011;27:356-63. https://doi.org/10.1016/j.dental.2010.11.015
  12. Beuer F, Schweiger J, Edelhoff D. Digital dentistry: an overview of recent developments for CAD/CAM generated restorations. Br Dent J 2008;204:505-11. https://doi.org/10.1038/sj.bdj.2008.350

피인용 문헌

  1. Latest Research Trends of 3D Printing in Korea vol.35, pp.9, 2016, https://doi.org/10.7736/kspe.2018.35.9.829