Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluation of fitness in implant screw as tightening torque in dental laboratory

기공실에서의 임플란트 토크값에 따른 적합도 평가

  • Song, Young-Gyun (Department of Prosthodontics, College of Dentistry, Dankook University)
  • 송영균 (단국대학교 치과대학 치과보철학교실)
  • Received : 2015.10.19
  • Accepted : 2015.12.14
  • Published : 2015.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Purpose: The purpose of this study was to measure the tightening torque for dental implant in dental laboratory and to analyze of the effects of different tightening torque. Materials and Methods: The tightening torque for dental implant in dental laboratory were measured by digital torque gauge. The length of abutment and analog were measured as tightening torque of manufacturer's instructions and the measured value. And the data were statically analyzed. Results: The mean tightening torque of implant screw in dental laboratory was $1.563{\pm}0.332Ncm$. The external type implant system of total length were showing no significant differences but the internal type implant system had difference significant (P < 0.05) when compared with tightening torque. Conclusion: The implant prosthesis should be made under manufacturer's instructions especially as tightening torque of screw. For the fidelity of implant prosthesis, dental technician should learn how to use the torque gauge.

목적: 본 연구는 토크 게이지를 이용하여, 치과 기공사들이 임플란트 기공을 진행할 때 가하는 토크의 양을 측정해 분석하고, 이러한 결과가 보철물에 어떠한 결과를 미치는 알아보기 위함이다. 연구 재료 및 방법: 치과 기공사들이 임플란트 기공시 임플란트 나사에 가하는 토크를 디지털 토크 게이지를 이용하여 측정한다. 이후 기성지대주와 analog를 이용하여, 제조사의 권장 토크로 조였을 때의 길이를 통계학적으로 비교 분석하였다. 결과: 치과 기공사들의 임플란트 기공시 평균 토크는 $1.563{\pm}0.332Ncm$로 나타났으며, 제조사의 권장토크 값으로 조였을 때와 비교하면, 외부연결형의 침하량 차이는 없으나, 내부연결형의 침하량의 차이는 통계적으로 유의한 차이를 보였다(P < 0.05). 결론: 치과기공실에서도 제조사의 권장토크를 이용하여 보철물 기공작업을 시행하고, 정확한 토크 게이지의 사용법을 익히면, 기공오차에 따른 임플란트의 부적합을 어느 정도 해소할 수 있을 것이라 사료된다.

Keywords

References

  1. Artzi Z, Dreiangel A. A screw lock for single-tooth implant superstructures. J Am Dent Assoc 1999;130:677-82. https://doi.org/10.14219/jada.archive.1999.0277
  2. Schwarz MS. Mechanical complications of dental implants. Clin Oral Implants Res 2000;11:156-8. https://doi.org/10.1034/j.1600-0501.2000.011S1156.x
  3. Cavazos E, Bell FA. Preventing loosening of implant abutment screws. J Prosthet Dent 1996;75:566-9. https://doi.org/10.1016/S0022-3913(96)90464-3
  4. Kang YM, Lim JH, Cho IH. A study on the abutment screw loosening of dental implants. J Korean Acad Prosthodont 1996;34:1-14.
  5. Im SM, Kim DG, Park CJ, Cha MS, Cho LR. Biomechanical considerations for the screw of implant prosthesis: A literature review. J Korean Acad Prosthodont 2010;48:61-8. https://doi.org/10.4047/jkap.2010.48.1.61
  6. Dailey B, Jordan L, Blind O, Tavernier B. Axial displacement of abutments into implants and implant replicas, with the tapered cone-screw internal connection, as a function of tightening torque. Int J Oral Maxillofac Implants 2009;24:251-6.
  7. Siamos G, Winkler S, Boberick KG. Relationship between implant preload and screw loosening on implant-supported prostheses. J Oral Implantol 2002;28:67-73. https://doi.org/10.1563/1548-1336(2002)028<0067:TRBIPA>2.3.CO;2
  8. Maeda Y, Satoh T, Sogo M. In vitro differences of stress concentrations for internal and external hex implant-abutment connections: a short communication. J Oral Rehabil 2006;33:75-8. https://doi.org/10.1111/j.1365-2842.2006.01545.x
  9. Khraisat A, Stegaroiu R, Nomura S, Miyakawa O. Fatigue resistance of two implant/abutment joint designs. J Prosthet Dent 2002;88:604-10. https://doi.org/10.1067/mpr.2002.129384
  10. Norton MR. An in vitro evaluation of the strength of a 1-piece and 2-piece conical abutment joint in implant design. Clin Oral Implants Res 2000;11:458-64. https://doi.org/10.1034/j.1600-0501.2000.011005458.x
  11. McGlumphy EA, Mendel DA, Holloway JA. Implant screw mechanics. Dent Clin North Am 1998;42:71-89.
  12. Burguete RL, Johns RB, King T, Patterson EA. Tightening characteristics for screwed joints in osseointegrated dental implants. J Prosthet Dent 1994;71:592-9. https://doi.org/10.1016/0022-3913(94)90443-X
  13. Choi JH, Yang JH, Cho WP, Lee JB. The influence of abutment screw length and repeated tightening on screw loosening in dental implant. J Korean Acad Prosthodont 2006;44:432-42.
  14. Joo YH, Lee JH. A study on accuracy and application of the implant torque controller used in dental clinic. J Korean Acad Prosthodont 2011;49:197-205. https://doi.org/10.4047/jkap.2011.49.3.197
  15. Jaarda MJ, Razzoog ME, Gratton DG. Providing optimum torque to implant prostheses: a pilot study. Implant Dent 1993;2:50-2. https://doi.org/10.1097/00008505-199304000-00010
  16. Tan KB, Nicholls JI. The effect of 3 torque delivery systems on gold screw preload at the gold cylinder-abutment screw joint. Int J Oral Maxillofac Implants 2002;17:175-83.
  17. Standlee JP, Caputo AA. Accuracy of an electric torque-limiting device for implants. Int J Oral Maxillofac Implants 1999;14:278-81.
  18. Huh YH, Cho LR, Kim DG, Park CJ. Comparison of Implant Torque Controllers using Detorque Value. J Dent Rehabil Appl Sci 2010:26:419-32.