Effect of cyclic loading on axial displacement of abutment into implant with internal tapered connection: a pilot study
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Purpose: To evaluate the axial displacement of implant-abutment assembly after cyclic loading in internal tapered connection system. Materials and methods: External butt-joint connection implant and internal tapered connection implant were connected with three types of abutment for cement-retained prostheses, i.e. external type abutment (Ext group), internal tapered 1-piece abutment (Int-1 group), and internal tapered 2-piece abutment (Int-2 group). For each group, 7 implants and abutments were used. The implantabutments assemblies were clamped into the implant holder for vertical loads. A dynamic cyclic loading was applied for 150 ± 10 N at a frequency of 4 Hz. The amount of axial displacement of the abutment into the implant was calculated at each cycle of 0, 5, 10, 50, 100, 1,000, 5,000, and 10,000. A repeated measures analysis of variance (ANOVA) for the overall effect of cyclic loading and the pattern analysis by linear mixed model were used for statistical analysis. Differences at P<.05 were considered statistically significant. Results: The mean axial displacement after 10,000 cycles were 0.714 ± 0.488 ㎛ in Ext group, 5.286 ± 1.604 ㎛ in Int-1 group, and 11.429 ± 1.902 ㎛ in Int-2 group. In the pattern analysis, Int-1 and Int-2 group showed continuous axial displacement at 10,000 cycles. There was no declining pattern of axial displacement in the Ext group. Conclusion: The pattern of linear mixed model in Ext group showed no axial displacement. There were continuous axial displacements in abutment-implant assemblies in the Int-1 and Int-2 group at 10,000 cycles. More axial displacement was found in Int-2 group than in Int-1 group.
Abstract
Purpose: To evaluate the axial displacement of implant-abutment assembly after cyclic loading in internal tapered connection system. Materials and methods: External butt-joint connection implant and internal tapered connection implant were connected with three types of abutment for cement-retained prostheses, i.e. external type abutment (Ext group), internal tapered 1-piece abutment (Int-1 group), and internal tapered 2-piece abutment (Int-2 group). For each group, 7 implants and abutments were used. The implantabutments assemblies were clamped into the implant holder for vertical loads. A dynamic cyclic loading was applied for 150 ± 10 N at a frequency of 4 Hz. The amount of axial displacement of the abutment into the implant was calculated at each cycle of 0, 5, 10, 50, 100, 1,000, 5,000, and 10,000. A repeated measures analysis of variance (ANOVA) for the overall effect of cyclic loading and the pattern analysis by linear mixed model were used for statistical analysis. Differences at P<.05 were considered statistically significant. Results: The mean axial displacement after 10,000 cycles were 0.714 ± 0.488 ㎛ in Ext group, 5.286 ± 1.604 ㎛ in Int-1 group, and 11.429 ± 1.902 ㎛ in Int-2 group. In the pattern analysis, Int-1 and Int-2 group showed continuous axial displacement at 10,000 cycles. There was no declining pattern of axial displacement in the Ext group. Conclusion: The pattern of linear mixed model in Ext group showed no axial displacement. There were continuous axial displacements in abutment-implant assemblies in the Int-1 and Int-2 group at 10,000 cycles. More axial displacement was found in Int-2 group than in Int-1 group.
참고문헌 (23)
- Jemt T, "Fixed implant-supported prostheses in the edentulous maxilla. A five-year follow-up report", Clin Oral Implants Res, 5, pp.142~147 (1994)
- Buser D, "Long-term evaluation of non-submerged ITI implants. Part 1: 8-year life table analysis of a prospective multi-center study with 2359 implants", Clin Oral Implants Res, 8, pp.161~172 (1997)
- Nelson K, "A retrospective analysis of sandblasted, acid-etched implants with re-duced healing times with an observation period of up to 5 years", Int J Oral Max Impl, 23, pp.726~732 (2008)
- Goodacre CJ, "Clinical complications with implants and implant prostheses", J Prosthet Dent, 90, pp.121~132 (2003)
- Jemt T, "A 3-year follow-up study on single implant treatment", J Dent, 21, pp.203~208 (1993)
- Sutter F, "The New Restorative Concept of the ITI Dental Implant System: Design and Engineering", Int J Periodont Rest, 13, pp.408~431 (1993)
- Norton MR, "Assessment of cold welding properties of the internal conical interface of two commercially available implant systems", J Prosthet Dent, 81, pp.159~166 (1999)
- Khraisat A, "Fatigue resistance of two implant", abutment joint designs, 2002, pp.88, 604~610
- Merz BR, "Mechanics of the implantabutment connection: An 8-degree taper compared to a butt joint connection", Int J Oral Max Impl, 15, pp.519~526 (2000)
- Kitagawa T, "Influence of implant", abutment joint designs on abutment screw loosening in a dental implant system, 2005, pp.75, 457~463
- Norton MR, "An in vitro evaluation of the strength of an internal conical interface compared to a butt joint interface in implant design", Clin Oral Implants Res, 8, pp.290~298 (1997)
- Schwarz MS, "Mechanical complications of dental implants", Clin Oral Implants Res, 11, pp.156~158 (2000)
- Bozkaya D, "Mechanics of the tapered interference fit in dental implants", J Biomech, 36, pp.1649~1658 (2003)
- Dailey 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 Max Impl, 24, pp.251~256 (2009)
- Kim KS, "Variation in the total lengths of abutment", implant assemblies generated with a function of applied tightening torque in external and internal implant-abutment connection, 2011, pp.22, 834~839
- Lee JH, "Axial displacements in external and internal implant-abutment connection", Clin Oral Implants Res, 2012, pp.1~7 (2012)
- Kim SK, "Screw Loosening with Interchangeable Abutments in Internally Connected Implants After Cyclic Loading", Int J Oral Max Impl, 27, pp.42~47 (2012)
- Richter E-J, "In Vivo Vertical Forces on Implants", Int J Oral Max Impl, 10, pp.120~140 (1995)
- Rosentritt M, "Influence of stress simulation parameters on the fracture strength of all-ceramic fixed-partial dentures", Dental materials: official publication of the Academy of Dental Materials, 22, pp.176~182 (2006)
- "lme4: Linear mixed-effects models using S4 classes. R package version 0.999999-2"[URL]
- Siamos G, "Relationship between implant preload and screw loosening on implant-supported prostheses", J Oral Implantol, 28, pp.67~73 (2002)
- Bakaeen LG, "The effect of implant diameter, restoration design, and occlusal table variations on screw loosening of posterior single-tooth implant restorations", J Oral Implantol, 27, pp.63~72 (2001)
- Wiskott HWA, "Stress Fatigue: Basic Principles and Prosthodontic Implications", Int J Prosthodont, 8, pp.105~116 (1995)