DOI QR코드

DOI QR Code

CAD/CAM system을 이용한 하악 임플란트 피개의치 수복증례

The implant overdenture on the edentulous mandible using CAD/CAM system: A case report

  • 이시은 (부산대학교 치과대학 치과보철학교실) ;
  • 이소현 (부산대학교 치과대학 치과보철학교실) ;
  • 전영찬 (부산대학교 치과대학 치과보철학교실) ;
  • 정창모 (부산대학교 치과대학 치과보철학교실) ;
  • 윤미정 (부산대학교 치과대학 치과보철학교실) ;
  • 허중보 (부산대학교 치과대학 치과보철학교실)
  • Lee, Si-Eun (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • Lee, So-Hyoun (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • Jeon, Young-Chan (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • Jeong, Chang-Mo (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • Yun, Mi-Jung (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • Huh, Jung-Bo (Department of Prosthodontics, School of Dentistry, Pusan National University)
  • 투고 : 2014.11.11
  • 심사 : 2015.01.12
  • 발행 : 2015.01.30

초록

완전, 혹은 부분 무치악 환자의 가철성 보철물 수복치료에서 치아 상실에 따른 치조골 감소와 별형은 의치 사용에 어려움을 준다. 이런 문제를 극복하기 위해 임플란트를 이용하여 가철성 보철물에 지지, 유지, 및 안정을 제공할 수 있다. 임플란트를 이용한 피개의치에 사용되는 어태치먼트는 여러 종류가 있는데, 환자의 여러 조건을 고려하여 어태치먼트를 선택해야 한다. 그 중 milled bar의 경우 임플란트 간 거리가 좁아서 기성 bar를 사용할 수 없는 경우, 또는 기성 bar보다 상부 구조물의 확고한 안정성과 지지를 얻고자 할 때 선택 된다. Milled bar는 cross arch stabilization을 이룰 수 있고, 저작 시 의치의 움직임이 없어 환자에게 편안함을 제공하지만, 숙련된 기공과정을 요한다. 그러나 최근 CAD/CAM의 발전을 통해 milled bar의 제작이 간결해지고 적합성을 증진시킬 수 있었다. 본 증례는 8개의 임플란트가 식립된 하악 완전 무치악의 알츠하이머 환자로 milled bar와 magnet을 이용한 피개의치를 제작하였다. 전신병력이 양호해진 기간 동안 빠른 치료종결이 필요했기 때문에, 통법의 기공 작업을 CAD를 통해 시뮬레이션하여 복잡한 기공과정을 좀더 단순하게 하였고 이로써 치료 기간을 줄일 수 있었다. 이상과 같이 milled bar를 이용한 임플란트 지지 피개의치를 제작하는 과정 중 CAD/CAM system을 적절히 사용하여 심미적, 기능적으로 만족할 만한 결과를 얻었기에 보고하고자 한다.

Alveolar bone loss and deformation can be a risk factor in removable prosthetic restoration treatment for partially or fully edentulous patients. The use of implants to solve this problem could improve the support, retention and stability of removable restoration. Attachments used in implant overdenture are versatile. The attachment should be selected according to the patients' conditions. Milled bar has been chosen when readymade bar could not be used because of the narrow distance between implants or firm stability and support of supra-structure were needed. Milled bar design is able to provide cross arch stabilization and comfortability to patients. However, it needs skilled laboratory procedures. Recently, the fabrication of milled bar has become simple and its suitability has been improved through the development of CAD/CAM system. In a 67-year-old female Alzheimer's disease patient with 8 implant fixtures on the fully edentulous site of mandible, implant overdenture with using milled bar and magnet attachment was planned. As rapid treatment was required, CAD/CAM system was used to make a simple laboratory procedure instead of a traditional fabrication process. With this system, implant overdenture with milled bar can be fabricated esthetically and functionally.

키워드

참고문헌

  1. Kim SW. Implant overdenture. Seoul: MyoungMun Publishing Co. 2007.
  2. Branemark PI, Adell R, Breine U, Hansson BO, Lindstrom J, Ohlsson A. Intra-osseous anchorage of dental prostheses. I. Experimental studies. Scand J Plast Reconstr Surg 1969;3:81-100. https://doi.org/10.3109/02844316909036699
  3. DeBoer J. Edentulous implants: overdenture versus fixed. J Prosthet Dent 1993;69:386-90. https://doi.org/10.1016/0022-3913(93)90186-R
  4. Trakas T, Michalakis K, Kang K, Hirayama H. Attachment systems for implant retained overdentures: a literature review. Implant Dent 2006;15:24-34. https://doi.org/10.1097/01.id.0000202419.21665.36
  5. Sadowsky SJ. The implant-supported prosthesis for the edentulous arch: design considerations. J Prosthet Dent 1997;78:28-33. https://doi.org/10.1016/S0022-3913(97)70084-2
  6. Adell R, Lekholm U, Rockler B, Branemark PI. A 15-year study of osseointegrated implants in the treatment of the edentulous jaw. Int J Oral Surg 1981;10:387-416. https://doi.org/10.1016/S0300-9785(81)80077-4
  7. Zarb GA, Bolender CL, Eckert SE, Fenton AH, Jacob RF, Mericske-Stern R. Prosthodontic treatment for edentulous patients: Complete dentures and implant-supported prostheses. 12th ed. Mosby, 2003.
  8. Duret F, Preston JD. CAD/CAM imaging in dentistry. Curr Opin Dent 1991;1:150-4.
  9. 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
  10. Mormann WH, Brandestini M, Lutz F, Barbakow F. Chairside computer-aided direct ceramic inlays. Quintessence Int 1989;20:329-39.
  11. 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
  12. Persson A, Andersson M, Oden A, Sandborgh-Englund G. A threedimensional evaluation of a laser scanner and a touch-probe scanner. J Prosthet Dent 2006;95:194-200. https://doi.org/10.1016/j.prosdent.2006.01.003
  13. Vlaar ST, van der Zel JM. Accuracy of dental digitizers. Int Dent J 2006;56:301-9. https://doi.org/10.1111/j.1875-595X.2006.tb00105.x
  14. Rudolph H, Luthardt RG, Walter MH. Computer-aided analysis of the influence of digitizing and surfacing on the accuracy in dental CAD/CAM technology. Comput Biol Med 2007;37:579-87. https://doi.org/10.1016/j.compbiomed.2006.05.006
  15. Kim KB, Kim JH, Kim WC, Kim JH. Three-dimensional evaluation of gaps associated with fixed dental prostheses fabricated with new technologies. J Prosthet Dent 2014;112:1432-6. https://doi.org/10.1016/j.prosdent.2014.07.002
  16. Noack F. CoCr-Revolution. Dent Dialog 2012;13:2-5.
  17. Becker JJ. Permanent magnets. Sci American 1970;233:92-100.
  18. Strnat KJ. The hard magnetic properties of rare earth-transition metal alloys. IEEE Trans Magn 1972;8:511-6 https://doi.org/10.1109/TMAG.1972.1067368
  19. Sagawa M, Fujimura S, Yamamoto H, Matsuura Y, Hiraga K. Permanent magnet materials based on the rare earth-iron-boron tetragonal compounds. IEEE Trans Magn 1984;20:1584-9. https://doi.org/10.1109/TMAG.1984.1063214
  20. Sagawa M, Fujimura S, Togawa N, Yamamoto H, Matsuura Y. New material for permanent magnets on a base of Nd and Fe. J Appl Phys 1984;55:2083-7. https://doi.org/10.1063/1.333572
  21. Riley MA, Walmsley AD, Harris IR. Magnets in prosthetic dentistry. J Prosthet Dent 2001;86:137-42. https://doi.org/10.1067/mpr.2001.115533
  22. Ceruti P, Bryant SR, Lee JH, MacEntee MI. Magnet-retained implant- supported overdentures: review and 1-year clinical report. J Can Dent Assoc 2010;76:a52.
  23. Smith GA, Laird WR, Grant AA. Magnetic retention units for overdentures. J Oral Rehabil 1983;10:481-8. https://doi.org/10.1111/j.1365-2842.1983.tb01471.x

피인용 문헌

  1. 치과용 Co-Cr sinter metal의 소결 후 변형비교 vol.38, pp.3, 2015, https://doi.org/10.14347/kadt.2016.38.3.127