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Influence of Abutment Surface Treatments on Screw Loosening of Morse Taper Implants

Authors :
Juliana Marotti
Patricia Mitiko Asanuma Hirayama
Pedro Tortamano
Dalva Cruz Laganá
Washington Steagall
Lauren Bohner
Source :
Implant Dentistry. 26:718-722
Publication Year :
2017
Publisher :
Ovid Technologies (Wolters Kluwer Health), 2017.

Abstract

To evaluate the effect of blasting and bonding on abutment surface to prevent screw loosening in Morse taper connections.Twenty-eight Morse taper connection implants were divided into 4 groups: no treatment (G1), blasting (G2), bonding (G3), and blasting + bonding (G4). In groups G2 and G4, the abutments were blasted with aluminum oxide granules; in groups G3 and G4, the conical abutment region was covered with a thin layer of bond thread lock agent. In all implants, the abutment-implant joint was tightened at a torque of 35 Ncm. The specimens were submitted to the mechanical cycling, under an oblique load for 1.0 × 10 cycles. The torque was measured with a digital torque meter. Data were analyzed by the t test, one-way analysis of variance, and Tukey tests (95%).The loosening strength was significantly higher in group G4 (35.83 ± 3.02 Ncm). There was no significant difference among groups G1 (25.86 ± 1.96 Ncm), G2 (25.86 ± 3.29 Ncm), and G3 (26.14 ± 2.12 Ncm).The association of blasting and bonding on abutment surface can be used to prevent screw loosening in Morse taper implants.

Details

ISSN :
10566163
Volume :
26
Database :
OpenAIRE
Journal :
Implant Dentistry
Accession number :
edsair.doi.dedup.....af66131bf4c55b901d20bf1b0d412782
Full Text :
https://doi.org/10.1097/id.0000000000000622