대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)

  • 제45권6호
  • /
  • Pages.769-779
  • /
  • 2007
  • /
  • 0301-2875(pISSN)
  • /
  • 2005-3789(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
권호 표지

DETORQUE FORCE OF TiN-COATED ABUTMENT SCREW WITH VARIOUS COATING THICKNESS AFTER REPEATED CLOSING AND OPENING

  • Kim, Han-Su (Department of Prosthodontics, College of Dentistry, Chosun University) ;
  • Kim, Hee-Jung (Department of Prosthodontics, College of Dentistry, Chosun University) ;
  • Chung, Chae-Heon (Department of Prosthodontics, College of Dentistry, Chosun University)
  • 발행 : 2007.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Statement of problem. When TiN coating is applied to the abutment screw, occurrence of greater preload and prevention of the screw loosening could be expected due to decrease of frictional resistance. However, the proper thickness of TiN coating on abutment screw has not been yet reported. Purpose. The purpose of this study is to find out the appropriate TiN coating thickness by evaluating the detorque force and the surface change of titanium abutment screw with various TiN coating thickness. Material and methods. 1. Material Thirty five non-coated abutment screws were prepared for TiN coating. TiN coatings were prepared by Arc ion plating method. Depending on the coating deposition time(CDT), experimental groups were divided into 6 groups(CDT 30min, 60min, 90min, 120min, 150min, 180min) and those of 1 group was not coated as a control group. Each group was made up of 5 abutment screws. 2. Methods FE-SEM(Field Emission Scanning Electron Microscoper) and EDX(Energy Dispersive X-ray Spectroscopy) were used to observe the surface of the abutment screw. Electric scales was used to measure the weight of the abutment screw after the repeated closing and opening of 10 trials. Detorque force was measured with digital torque gauge, at each trial. Results. 1. As the coating deposition time increased, the surface became more consistent and smooth. 2. As for the abutment screws that were TiN coated for more than 60 minutes, no surface change was found after the repeated closing and opening. 3. The TiN coated abutment screws showed less weight change than the non-coated abutment screws. 4. The TiN coated abutment screws showed higher mean detorque force than the noncoated abutment screws. 5. The abutment screw coated for 60 minutes showed the highest mean detorque force. Conclusion. The coating layer of proper thickness is demanded to obtain consistent and smooth coating surface, resistance to wear, and increased detorque force of the abutment screw. In conclusion, the coating deposition time of 60 minutes indicated improved mechanical property, when TiN coating was conducted on titanium abutment screw.

키워드

참고문헌

  1. Goodacre CJ, Kan JKY, Rungcharassaeng K. Clinical complications of osseointegrated implants. J Prosthet Dent 1999;81:537-552 https://doi.org/10.1016/S0022-3913(99)70208-8
  2. Martin WC, Woody RD, Miller BH, Miller AW. Implant abutment screw rotations and preloads for four different screw materials and surfaces. J Prosthet Dent 2001;86:24-32 https://doi.org/10.1067/mpr.2001.116230
  3. Andersson B, Odman P, Lindvall AM. Singletooth restorations supported by osseointegrated implants: Results and experiences from a prospective study after 2 to 3 years. Int J Oral Maxillofac Implants 1995;10:702-711
  4. Avivi-Arber L, Zarb GA. Clinical effectiveness of implant-supported single tooth replacement: the Toronto study. Int J Oral Maxillofac Implants 1996;11:311-321
  5. Kim NH, Chung CH. A study on the fit of the implant-abutment-screw interface. J Korean Acad Prosthodont 2003;41(4):503-518
  6. Jemt T, Petterson P. A 3-year follow-up study on single implant treatment. J Dent 1993;21:203-208 https://doi.org/10.1016/0300-5712(93)90127-C
  7. Jemt T, Laney WR, Harris D. Osseointegrated implants for single tooth replacement: A J-year report from a multicenter prospective study. Int J Oral Maxillofac Implants 1991;6:29-36
  8. Naert 1, Quirynen M, van Steenberghe D. A six-year prosthodontic study of 509 consecutively inserted implants for the treatment of partial edentulism. J Prosthet Dent 1992;67:236-245 https://doi.org/10.1016/0022-3913(92)90461-I
  9. Goodacre CJ, Bernal G, Rungcharassaeng K. Clinical complications with implants and implant prostheses. J Prosthet Dent 2003;90:121-132 https://doi.org/10.1016/S0022-3913(03)00212-9
  10. Wolfinger GJ. Implant prosthodontic and restorative complications. Int J Oral Maxillofac Implants 2003;18:766-767
  11. Hebel KS, Gajjar RC. Cement-retained versus screw-retained implant restorations: Achieving optimal occlusion and esthetics in implant dentistry. J Prosthet Dent 1997;77:28-35 https://doi.org/10.1016/S0022-3913(97)70203-8
  12. Mcglumphy EA, Mendel DA, Holloway JA. Implant screw mechanics. Dent Clin North Am 1998;42: 71-89
  13. Rangert B, [emt T, [orneus L. Forces and moments of Branemark implants. Int J Oral Maxillofac Implants 1989;4:241-247
  14. Brosky ME, Korioth TW, Hodges J. The anterior cantilever in the implant-supported screw-retained mandibular prosthesis. J Prosthet Dent 2003;89: 244-249 https://doi.org/10.1067/mpr.2003.43
  15. Burguete RL, Johns RB, King T, Patterson EA. Tightening characteristics for screwed joints in osseointegrated implants. J Prosthet Dent 1994; 71:592-599 https://doi.org/10.1016/0022-3913(94)90443-X
  16. Haack JE, Sakaguchi RL, Sun T, Coffey JP. Elongation and preload stress in dental implant abutment screws. J Oral Maxillofac Implants 1995;10:529-535
  17. Binon PP. The effect of implant/ abutment hexagonal misfit on screw joint stability. Int J Prosthodont 1996;9:149-160
  18. Motosh N. Development of design charts for bolts preloaded up to the plastic range. J Eng Ind 1976: 98:849-851 https://doi.org/10.1115/1.3439041
  19. Binon PP. Implants and components: Entering the new millenium. Int J Oral Maxillofac Implants 2000;15:76-94
  20. Choi JU, Jeong eM, [eon YC, Lim JS, Jeong He, Eom TG. Influence of Tungsten Carbide / Carbon coating on the preload of implant abutment screws. J Korean Acad Prosthodont 2006;44(2):229-242
  21. Drago CJ. A clinical study of the efficacy of GoldTite square abutment screws in cement-retained implant restorations. Int J Oral Maxillofac Implants 2003;18(2):273-278
  22. Mezger PR, Creugers NH. Titanium nitride coatings in clinical dentistry. J Dent 1992;20(6):342344
  23. Kim IN, Chung CH, Kim HJ. Surface change and fit of TiN-eoated abutment screw after repeated closing and opening. J Korean Acad Prosthodont 2007;45(1): 119-130
  24. Burguete RL, Johns RB, King T. Tightening characteristics for screwed joints in osseointegrated dental implants. J Prosthet Dent 1994;71:592-599 https://doi.org/10.1016/0022-3913(94)90443-X
  25. Koo CI, Chung CH, Choe HC Effects of surface coating on the screw release of dental implant screw. J Korean Acad Prosthodont 2004;42(2):210-225
  26. Kim HJ. Choe He, Chung CH. Effect of TiN coating of abutment screw on detorque force. J Korean Acad Prosthodont 2007;45(3):329-338
  27. Lee JY, Chung CH. Mechanical properties of TiN coated film with various coating thickness on titanium alloy. J Korean Acad Prosthodont 2007 under review
  28. Winkler S, Ring K, Ring JD, Boberick KG. Implant screw mechanics and the settling effect : An overview. J Oral ImplantoI 2003;29:242-245 https://doi.org/10.1563/1548-1336(2003)029<0242:ISMATS>2.3.CO;2
  29. Jorneus L, Jemt T, Carlsson L. Loads and designs of screw joints for single crowns supported by osseointegrated implants. Int J Oral Maxillofac Implants 1992;7:353-359
  30. Sakaguchi RL, Borgersen SE. Nonlinear contact analysis of preload in dental implant screws. Int J Oral Maxillofac Implants 1995;10:295-302
  31. Sopwith DG. The distribution of load in screw threads. Proc Inst Mech Eng 1948;159:373-383
  32. Weiss EI, Kozak D, Gross MD. Effect of repeated closure on opening torque values in seven abutmentimplant systems. J Prosthet Dent 2000;84(2):194-199 https://doi.org/10.1067/mpr.2000.108069