Letteratura scientifica

Abstract

 

The initial stability of dental implants is often times used as a predicament of its possible successful outcome. The purpose of this study was to evaluate the effect of different surface treatments and implant macrodesigns and on implant initial stability in a beagle model.

 

Methods: The third and fourth mandibular premolars of adult beagle dogs (~1.5 years of age) were extracted and the sites allowed to heal for 8 weeks. Subsequently, different combinations of macrodesign and implant surface treatment in screw root form implant designs (31- Nanotite, Astra Tech-Osseospeed, Intra-Lock – Ossean) with similar diameter and length were placed following the suggested manufacturer’s surgical protocol. The implants remained for 1 and 3 weeks in vivo (n=6 per system and implantation time). Following euthanization, the mandibles were retrieved and the implants were torque tested to interface failure with custom tooling adapted in an automated machine. Statistical analysis was performed by one-way ANOVA at 95% level of significance and Tukey’s post-hoc test for multiple comparisons.

 

Results: Significant differences were noted between groups following biomechanical testing (p<0.001; mean?95%Cl in Ncm; 1 week – 31 Nanotite= 19.43?8.39, Astra Osseospeed= 23.48?8.39, Intra-Lock Ossean= 107.6?8.39; 3 weeks – 31 Nanotite=25.17?10.27, Astra Osseospeed = 76.2?10.28, Intra-Lock Ossean = 94.82?10.27).

 

Conclusion: The combination of macrodesign and surface treatment affected the initial stability of the implants.

The Effect of Implant Surface and Macrodesign on Initial Stability. A Study in Dogs.

 

 

2009, Academy of Osseointegration, Annual Meeting, P195

Implant

Surface: 13

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