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ISSN : 0376-4672
Purpose: This study was conducted to evaluate the effect of the fixture abutment connection type and diameter on the screw joint stability in external butt joint for 2nd surgery and internal cone connected type implant system for 1st and 2nd surgery using ultimate fracture strength. Materials and Methods: USII system, SSII system and GSII system of Osstem Implant were used. Each system used the fixture with two different diameters and cement-retained abutments, and tungsten carbide / carbon coated abutment screws were used. Disc shaped stainless steel metal tube was attached using resin-based temporary cement. The experimental group was divided into seven subgroups, including the platform switching shaped specimen that uses a regular abutment in the fixture with a wide diameter in USII system. A static load was increased to the metal tube at 5mm deviated point from the implant central axis until it reached the compression bending strength at a rate of 1mm/min. Then the deformations and patterns of fracture in threaded connection were compared. Results and Conclusion: 1. In the comparison between the Regular diameter, compression bending strength of SSII system was higher than USII system and GSII system. There was no significant difference between USII system and GSII system. 2. In the comparison between wide diameter, compression bending strength was increased in the order of GSII system, USII system, and SSII system. 3. In comparison between the implant diameter, compression bending strength of the wide diameter was greater than the regular diameter in any system(P<0.05). 4. There was no significant difference between the platform switching (III group) and the regular diameter (I group) in USII system. 5. In USII system, fracture of abutment screw and deformation of both fixture and abutment were observed in I, II and III subgroups. 6. Failure pattern of SSII system, which was the fracture of abutment screw and deformation of the abutment and fixture, was observed in both IV and V subgroups. Fracture of some fixtures was observed in subgroup V. 7. Failure pattern of GSII system, which was the fracture of the abutment screw and deformation of the fixture and the abutment, was observed in both VI and VII subgroups. Apart from other subgroups, subgroup VII demonstrated no bending neither the fracture at the top of the fixture. The compressive deformation of internal slope in the fixture was the only thing observed in subgroup VII.
1. Khraisat A. Stability of implant-abutment interface with a hexagon-mediated butt joint: failure mode and bending resistance. Clin Implant Dent Relat Res 2005; 7:221-8.
2. Goodacre C, Rungcharassaeng K. Clinical complications of osseointegrated implants. J Prosthet Dent 1999; 81:537-52.
3. McGlumphy EA, Mendel DA, Holloway JA. Implant Screw Mechanics. Dent Clinics North Am 1998 ; 42:71-89.
4. Haas R, Mensdorff-Pouilly N, Mailath G, Watze G. Brånemark single tooth implants: A preliminary report of 76 implants. J Prosthet Dent 1995; 73:274-9.
5. Jörnéus L, Jemt T, Carlsson L. Loads and designs of screw joints for single crowns supported by osseointegrated implants. Int J Oral Maxillofac Implants 1992; 7:353-9.
6. Jaarda MJ, Razzoog ME, Gratton DG. Comparison of "Look-Alike" implant prosthetic retaining screws. J Prosthodont 1995; 4:23-7.
7. Binon PP, Sutter F, Beaty K, Brunski J, Gulbransen H, Weiner R. The role of screws in implant systems. Int J Oral Maxillofac Implants 1994; 9(suppl):48-63.
8. Rangert B, Jemt T, Jörneus L. Forces and moments on Br?nemark implants. Int J Oral Maxillofac Implants 1989; 4:241-7.
9. Patterson EA, Johns RB. Theoretical analysis of the fatigue life of fixture screws in osseointegrated dental implants. Int J Oral Maxillofac Implants 1992; 7:26-33.
10. Sakaguchi RL, Borgersen SE. Nonlinear contact analysis of preload in dental implant screws. Int J Oral Maxillofac Implants 1995; 10:295-302.
11. Burguete RL, Johns RB, King T, Patterson EA. Tightening characteristics for screwed joints in osseointegrated dental implants. J Prosthet Dent 1994; 71:592-9.
12. Schwarz MS. Mechanical complications of dental implants. Clin Oral Impl Res 2000; 11(Suppl.):156-8.
13. Binon PP. Implants and components: Entering the new millennium. Int J Oral Maxillofac Implants 2000; 15:76-94.
14. Merz BR. Mechanics of the implant-abutment connection. An 8-degree taper compared to a butt joint connection. Int J Oral Maxillofac Implants 2000; 15: 519-26.
15. Haack JE, Sakaguchi RL, Sun T, Coffey JP. Elongation and preload stress in dental implant abutment screws. Int J Oral Maxillofac Implants 1995; 10:529-36.
16. Choi JU, Jeong CM, Jeon YC, Lim JS, Jeong HC, Eom TG. Influence of tungsten Carbide/carbon coating on the preload of implant abutment screw. J Kor Acad Prosthodont 2006; 44:229-42.
17. Griffith HT. Suggested tightening torques for structural bolts. Fastener Technology/February 1987. In: Torque Tensioning: A Ten Part Complication. Stow, OH: Fastener Technology. Jan-Dec 1987
18. Wilson TG, Kornman KS. Fundamentals of periodontics. Chicago:Quintessence; 2003: 582.
19. Persson LG, Lekholum U, Leonhardt A, Dahl G, Lindhe J. Bacterial colonization on internal surface of Br?nemark system implant components. Clin Oral Implants Res 1996; 7:90-5.
20. Scarano A, Assenza B, Piattelli M, Iezzi G, Leghissa GC, Quaranta A et al. A 16-year study of the microgap between 272 human titanium implants and their abutments. J Oral Implantol 2005; 31:269-75.
21. King GN, Hermann JS, Schoolfield JD, Buser D, Cochran DL. Influence of the size of the microgap on crestal bone levels in non-submerged dental implants: a radiographic study in the canine mandible. J Periodontol 2002; 73:1111-7.
22. Dibart S, Warbington M, Su MF, Skobe Z. In vitro evaluation of the implant-abutment bacterial seal:the locking taper system. Int J Oral Maxillofac Implants 2005; 20:732-7.
23. Degidi M, Piattelli A, Carinci F: Clinical outcome of narrow diameter implants: A retrospective study of 510 implants. J Periodontol 2008; 79:49.
24. Langer B, Langer L, Herrmann I, et al. The wide fixture: A solution for special bone situations and a rescue for the compromised implant. Part 1. Int J Oral Maxillofac Implants 1993 ; 8:400.
25. Lazzara RJ, Porter SS. Platform switching: A new concept in implant dentistry for controlling postrestorative crestal bone levels. Int J Periodontics Restorative Dent 2006; 26:9-17.
26. Prosper L, Redaelli S, Pasi M, Zarone F, Radaelli G, Gherlone EF. A randomized prospective multicenter trial evaluating the platform-switching technique for the prevention of postrestorative crestal bone loss. Int J Oral Maxillofac Implants 2009; 24:299-308.
27. Berglundh T, Lindhe J, Ericsson I. The soft tissue barrier at implants and teeth. Clin Oral Implants Res 1991; 2:81-90.
28. Abrahamsson I, Berglundh T, Wennström J, Lindhe J. The periimplant hard and soft tissues at different implant systems. A comparative study in the dog. Clin Oral Implants Res 1996; 7:212-9.
29. Tarnow DP, Cho SC, Wallace SS. The effect of inter-implant distance on the height of interimplant bone crest. J Periodontol 2000; 71:546-9.
30. Hobkirk JA, Schwab J. Mandibular deformation in subjects with osseointegrated implants. Int J Oral Maxillofac Implants 1991; 6:319-28.
31. Rangert B, Sullivan R, Jemt T. Load factor control for implants in the posterior partially edentulous segment. Int J Oral Maxillofac Implants 1997; 12:360-70.
32. Hoyer SA, Stanford CM, Buranadham S, Fridrich T, Wagner J, Gratton D. Dynamic fatigue properties of the dental implant-abutment interface: Joint opening in wide-diameter versus standard-diameter hex-type implants. J Prosthet Dent 2001; 85:599-607.
33. Gratton DG, Aquilino SA, Stanford CM. Micromotion and dynamic fatigue properties of the dental implant/abutment interface. J Prosthet Dent 2001; 85:47-52.
34. Misch SE, Wang HL, Misch CM, Sharawy M, Lemons J, Judy KW. Rationale for the application of immediate load in implant dentistry, part II. Implant Dent 2004; 13:310-21.
35. Maeda Y, Miura J, Taki I, Sogo M. Biomechanical analysis on platform switching: Is there any biomechanical retionale? Clin Oral Implants Res 2007; 18:581-4
36. Pessoa RS, Vaz LG, Marcantonio E, Sloten JV. Biomechanical evaluation of platform switching in different implant protocols: Computed tomographybased three-dimensional finite element analysis. Int J Oral Maxillofac Implants 2010; 25:911-9.