The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

A STUDY ON SURFACE OF VARIOUS ABUTMENT SCREWS

  • Park Chan-Ik (Dept. of Prosthodontics, College of Dentistry, Chosun University) ;
  • Chung Chae-Heon (Dept. of Prosthodontics, College of Dentistry, Chosun University) ;
  • Choi Han-Cheol (Gwangju-Junnam Regional Small and Medium Business Administration)
  • Published : 2003.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Statement of problem: Regardless of any restoration, most of case, we used in screw connection between abutment and implant. For this reason, implant screw loosening has been remained problem in restorative practices. Purpose: The purpose of this study was to compare surface of coated/plated screw with titanium and gold alloy screw and to evaluate physical property of coated/plated material after scratch test in FESEM investigation Material and methods: GoldTite, titanium screw provided by 3i (Implant Innovation, USA) and TorqTite, titanium screw by Steri-Oss (Nobel Biocare, USA) and gold screw, titanium screw by AVANA (Osstem Implant, korea) - were selected for this study. Each abutment screw surface was observed at 100 times, and then screw crest, root, and slope were done more detailed numerical value, at 1000 times with FESEM. A micro-diamond needle was also prepared for the scratch test. Each abutment screw was fixed, micro-diamond scratch the surface of head region was made at constant load and then was observed central region and periphery of fine trace through 1000 times with FESEM. Results: The surface of GoldTite was smoother than that of other kinds of screw and had abundant ductility and malleability compared with titanium and gold screw. The scratch test also showed that teflon particles were exfoliated easily in screw coated with teflon. Titanium screw had a rough surface and low ductility. Conclusion: It was recommended that the clinical use of gold-plated screw would prevent a screw from loosening. CLINICAL IMPLICATIONS Clinical use of gold-plated screw would prevent a screw from loosening because it had abundant ductility and malleability compared with titanium and gold screw.

Keywords

References

  1. Charles JG, Joseph YKK, Kitichai R. Clinical complications of osseintegrated implants. J Prosthet Dent 1999;81:537-552 https://doi.org/10.1016/S0022-3913(99)70208-8
  2. Will CM, Ronald DW, Barbara HM, Amp WM. Implant abutment screw rotations and preloads for four different screw materials and surface. J Prosthet Dent 2001;86:24-32 https://doi.org/10.1067/mpr.2001.116230
  3. Andersson B, adman P, Lindvall AM. Single-tooth restorations supported by osseointegrated implants: results and experiences from a prospective study after 2 to 3years. Int J Oral Maxillofac Implants 1995;10:702-711
  4. Avivi-Arber L, Zarb GA. Clinical effectiveness of implant-supported single tooth replacement. Int J Oral Maxillofac Implant 1996;11:311-321
  5. Jeong YT, Chung CH, Lee HT. Screw joint stability according to abutment screw materials. J Korean Acad prosthodont 2002;40 :275-286
  6. Jorneus L. Screws and cylinders in the Nobelpharma implant system. Nobelpharma News 1987;1:7
  7. Jaarda MJ, Razzoog ME, Gratton DG. Effect of preload torque on the ultimate tensile strength of implant prosthetic retaining screws. Implant Dent 1994;3:17-21 https://doi.org/10.1097/00008505-199404000-00002
  8. Binon PP. Implants and Components: Entering the New Millennium. Int J oral Maxillofac Implants 2000;15:76-94
  9. Porter SS, Robb IT. Increasing implant-abutment preload by thin-gold coating abutment screws. J Dent Res 1998;77:837 (IADR Abstracts)
  10. Steri-Oss. Evaluation of TorqTite surface technology. Number TR01-1148, Yorba Linda(CA): Steri-Oss Dental Care Co; 1998
  11. Rachel SS, Walter JP, Thomas DT. Removal torques of conical, tapered implant abutments: the effects of anodization and reduction of surface area. Int J oral Maxillofac Implants 2002;17:24-27
  12. Binon P. The role of screws in implant systems. Int J Oral Maxillofac Implants 1994;9;48-63
  13. Jorneus L, Carlsson L. Loads and designs of screw joints for single crowns supported by osseointegrated Implants. Int J Oral Maxillofac Implants 1992;7:353-359
  14. Ronald LS, Svenn EB. Nonlinear contact analysis of preload in dental implant screws. Int J Oral Maxillofac Implants 1995;10:295-302
  15. Shigley J. Mechanical Engineering Design. 3ed. New York; McGraw Hill,; 1987. p. 227-252
  16. Shigley JE, Mischke CR. Standard handbook of machine design. 1st ed. New York; McGraw Hill; 1986. p. 23-26
  17. 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
  18. Ablowitz S, Burke JJ, Hiltz RH. Titanium industry. New York; Van Nostrand Co; 1955. p. 102-112
  19. Richard LB, Richard BJ,Toby K. Tightening characteristics for screwed joints in osseointegrated dental implants. J Prosthet Dent 1994;71:592-529 https://doi.org/10.1016/0022-3913(94)90443-X
  20. William JD. Dental Materials and their selection. 2nd Edition. 1997. p. 16-1