Effect of Using Nano and Micro Airborne Abrasive Particles on BondStrength of Implant Abutment to Prosthesis

Brazilian Dental Journal

Mansour Rismanchian¹  Amin Davoudi¹  Elham Shadmehr¹ 

关键词: implant abutments;    sandblasting;    surface treatment;    temporary cement.;   

DOI  :  10.1590/0103-6440201300173

来源: SciELO

【 摘 要 】

Connecting prostheses to the implant abutments has become a concern and achieving asatisfactory retention has been focused in cement-retention prostheses recently.Sandblasting is a method to make a roughened surface for providing more retention.The aim of this study was to compare effects of nano and micro airborne abrasiveparticles (ABAP) in roughening surface of implant abutments and further retention ofcemented copings. Thirty Xive abutments and analogues (4.5 D GH1) were mountedvertically in self-cured acrylic blocks. Full metal Ni-Cr copings with a loop on thetop were fabricated with appropriate marginal adaptation for each abutment. Allsamples were divided into 3 groups: first group (MPS) was sandblasted with 50 µm Al2O3 micro ABAP, second group (NSP) was sandblasted with 80nm Al2O3 nano ABAP, and the third group (C) was assumed ascontrol. The samples were cemented with provisional cement (Temp Bond) and tensilebond strength of cemented copings was evaluated by a universal testing machine afterthermic cycling. The t test for independent samples was used for statistical analysisby SPSS software (version 15) at the significant level of 0.05. Final result showedsignificant difference among all groups (p<0.001) and MPS manifested the highestmean retention (207.88±45.61 N) with significant difference among other groups(p<0.001). The control group showed the lowest bond strength as predicted(48.95±10.44 N). Using nano or micro ABAP is an efficient way for increasing bondstrengths significantly, but it seems that micro ABAP was more effective.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License