The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

A STUDY ON THE FIT OF THE IMPLANT-ABUTMENT-SCREW INTERFACE

임플란트-지대주-나사의 적합에 관한 연구

  • Kim Nak-Hyung (Dept. of Prosthodontics, College of Dentistry, Chosun University) ;
  • Chung Chae-Heon (Dept. of Prosthodontics, College of Dentistry, Chosun University) ;
  • Son Mee-Kyoung (Dept. of Prosthodontics, College of Dentistry, Chosun University) ;
  • Back Dae-Hwa (Gwangju-Junnam Regional Small and Medium Business Administration)
  • 김낙형 (조선대학교 치과대학 보철학교실) ;
  • 정재헌 (조선대학교 치과대학 보철학교실) ;
  • 손미경 (조선대학교 치과대학 보철학교실) ;
  • 백대화 (광주전남지방중소기업청)
  • Published : 2003.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

Statement of problem : There have been previous studies about considerable variations in machining accuracy and consistency in the implant-abutment-screw interfaces. Purpose : The purpose of this study was to evaluate the machining accuracy and consistency of implant/abutment/screw combinations on two randomly selected implants from each of four manufactures. Material and methods : In this study, screws were respectively used to secure a cemented abutment, to a hexlock implant fixture ; teflon coated titanium alloy screw(Torq-Tite) and titanium alloy screw in Steri--Oss system, gold-plated gold-palladium alloy screw(Gold-Tite) and titanium alloy screw in 3i system gild screw ana titanium screw in AVANA Dental Implant system, and titanium screws in Paragon System. The implants were perpendicularly mounted in polymethyl methacrylate autopolymerizing acrylic resin block(Orthodontic resin, Densply International Inc. USA) by use of dental surveyer. Each abutment screw was secured to the implant with recommended torque value using a digital torque controller. Each screw was again tightened after 10 minutes. All samples were cross sectioned with grinder-polisher unit(Omnilap 2000 SBT Inc) after embeded in liquid unsaturated polyester (Epovia, Cray Valley Inc) Results : There were the largest gaps in the neck areas of screws in hexagonal extension implants which were examined in this study. The leading edge of the abutment screw thread (superior surface) was in contact with the implant body thread, and the majority of the contacting surfaces were localized to the middle portion of the mating threads. Considerable variation in the contacting surfaces was noted in the samples evaluated. Amounts of contact in the abutment screw thread were larger for assemblies with Gold-Tite screw, gold alloy screw. Torq-Tite screw than those with titanium screws. The findings of intimate contact between the screw and screw seat were seen in all samples, regardless of manufacturers. However, microgap between the head and lateral neck surface of the screw and the abutment could be dectected in all samples. The findings of intimate contact between the platform of the implant and the bottom of the abutment were consistent in all samples, regardless of manufacturers. However, microgaps between the lateral surface of external hex of the fixture and the abutment could be dectected in all samples. Conclusion : Considerable variations in machining accuracy and consistency were noted in the samples and the implant-abutment-screw interfaces were incomplete. From the results of this study, further development of the system will be required, including improvements in pattern design.

Keywords

References

  1. Dan ET, William RL. Tissue-integrated prostheses complication. Int J Oral Maxillofac Implants 1992;7:477-484
  2. Jemt T, Laney WR, Harris D, Henry, PJ, Krogh P, Polizzi G. Osseointegrated implants for single tooth replacement. A 1-year report from a multicenter prospective study. Int J Oral Maxillofac Implants 1991;6:29-36
  3. Zarb HA, Schmitt A. The longitudinal clinical effectiveness of osseointegrated dental implants: The Toronto study. Part III : Problems and complications encounted. J Prosthet Dent 1990;64:185-194 https://doi.org/10.1016/0022-3913(90)90177-E
  4. Binon PP. Evaluation of matching accuracy and consistency of selected implant, standard abutments and laboratory analog. Int J Prosthodont 1995;8:162-178
  5. Binon PP. Evaluation of three slip fit hexagonal implants. Implant Dent 1996;5:253-248
  6. Binon PP. Implants and components :Entering the new millennium. Int J Oral Maxillofac Implants 2000;5:76-94
  7. Binon PP. The effect of implant/abutment hexagonal misfit on screw joint stability. Int J Prosthodont 1996;9:149-152
  8. Binon PP, McHugh MJ. The effect of eliminating implant/ abutment rotational misfit on screw joint stability. Int J Prosthodont 1996;9:511-519
  9. Binon PP, Sutter F, Brunski J, Gulbransen H. Weiner R. The role of screws in implant systems. Int J Oral Maxillofac Implants 1994; 9: 48-62
  10. Byren D, Houston F, Cleary R. Claffey N. The fit of cast and prernachined implant abutments. J Prosthet Dent 1998;80:184-192 https://doi.org/10.1016/S0022-3913(98)70108-8
  11. Eckert SE, Wollan PC. Restrospective review of 1170 endosseous implants placed in partially edentulous jaws. J Prosthet Dent 1998;79:415-421 https://doi.org/10.1016/S0022-3913(98)70155-6
  12. Haack JE, Sakaguchi RL, Sun T, Coffey JP. Elongation and preload stress in dental implant abutment screws. Int J Oral Maxillofac Implants 1995;10:529-536
  13. Jaarda MJ, Razzoog ME, Gratton DG. Geometric comparison of five interchangeable implant prosthetic retaining screws. J Prosthet Dent 1995;74:373-379 https://doi.org/10.1016/S0022-3913(05)80377-4
  14. Balshi T. The role of screws in implant systems. Topic V. Int J Oral Maxillofac Implants 1994;9(Spec Suppl):48-63
  15. Dixon DL. Breeding LC. Sadler JP, Mckay ML. Comparison of screw loosening, rotation. and deflection among three implant designs. J Prosthet Dent 1995;74:270-8 https://doi.org/10.1016/S0022-3913(05)80134-9
  16. Burguette RL, Johns MR, King TB, Patterson EA. Tightening characteristic for screwed joint in osseointegrated dental implant. J Prosthet Dent 1994;71:592-599 https://doi.org/10.1016/0022-3913(94)90443-X
  17. Carr AB, Brunski JB, Hurley E. Effect of fabrication, finishing, and polishing procedures on preload in prostheses using conventional gold and plastic cylinders. Int J Oral Maxillofac Implants 1996;11:589-598
  18. Carr AB, Brunski JB. Hurley E. The effect of finishing and polishing techniques in implant cylinder preload;9th Annual Meeting of the Academy of Osseointergration (Abstract). Int J Oral Maxilofac Implants 1995;10:123-124
  19. Carr AB, Brunski JB. Labishak J, Bagley B. Preload comparison between as received and cast to implant cylinder. J Dent Res(IADR Abstract) No.695,1994
  20. Gross M, Abramovich I, Weiss EI. Microleakage at the abutment-implant interface of osseointegrated implants. Int J Oral Maxillofac Implants 1999;14:94-100
  21. Besimo CE, Guindy JS, Lewetag D, Meyer J. Prevention of bacterial leakage into and from prefabricated screw-retained crowns on implants in vitro. Int J OralMaxillofac Implants 1999;14:654-660
  22. Schulte J K. External hex manufacturing tolerances of six implant systems: A pilot study. Implant Dent 1994;3:51-53 https://doi.org/10.1097/00008505-199404000-00010
  23. Schulte JK, Coffey J. Comparison of screw retention of nine abutment systems: A pilot study. Implnat Dent 1997;6:28-31
  24. Jeong YT, Chung CH, Lee HT. Screw joint stability according to abutment screw materials. J Korean Acad Prosthodont 2001;39:297-305
  25. Martin WC, Woody RD, Miller BH, Miller AW. Implant abutment screw rotations and preloads for four clifferent screw materials and surfaces. J Prosthet Dent 2001 ;86:24-32 https://doi.org/10.1067/mpr.2001.116230
  26. Han MJ, Chung CH, Choi HC. A study on surface alternation of implant screws after function. J Korean Acad Prosthodont 2001;39:297-305
  27. Lee HT, Kim NH, Chung CH, A study on the stability of implant screw by use of the sealer. J Korean Acad Prosthodont 2001;39:366-375
  28. Breeding LC, Dixon DL, Nelson EW, Tietge JD, Torque required to loosen single- tooth implant abutment screw before and after simulated function. Int J Proshodont 1993;6(5): 435-439
  29. Patyk A, Laugisch J, Steinberg JM. Hohlraumversiegelung bei implantatgetragenen Suprakonstruktionenmit Hilfe Acetatvernetzter Silikone. Z Zahnarz Implantol 1997;13:195-198
  30. 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
  31. Sakaguchi RL, Borgersen SE. Nonlinear finite element contact analysis of preload dental implant components. Int J Oral Maxilofac Implant. 1993;655-661
  32. Brunski JE, Hipp JE. In the forces on endosteal implant; A measurement system and biomechanical consideration. J Prosthet Dent 1984;51:82 https://doi.org/10.1016/S0022-3913(84)80112-2
  33. Sones AD. Complication with osseointegrated implants. J Prosthet Dent 1989 ;62:581-585 https://doi.org/10.1016/0022-3913(89)90084-X
  34. Boggan RS, Strong TA, Misch CE, Bidez MW. Influence of hex geometry and prostetic table width on statig and fatigue strength of dental implants. J Prosthet Dent 1999;82:436-440 https://doi.org/10.1016/S0022-3913(99)70030-2
  35. Abrahamsson I, Berglundh T, Lindhe J. Soft tissue response to plaque formation at different implant systems. A comparative study in the dog. Clin Oral Implants Res 1998;9:73-79 https://doi.org/10.1034/j.1600-0501.1998.090202.x
  36. Quirynen M, Bollen CML, Eyssen H, van Steenberghe D. Microvial penetration along the implant components of the Br${\aa}$ nemark system. An in vitro study. Clin. Oral Implants Res. 1994;5:239-244 https://doi.org/10.1034/j.1600-0501.1994.050407.x