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Tribological Properties of Dental Enamel Before and After Orthodontic Bracket Bonding-Debonding by Nano-Scratch Test

Published online by Cambridge University Press:  09 November 2017

A. Karimzadeh ,
M. R. Ayatollahi  and
T. Hosseinzadeh Nik
A. Karimzadeh*
Affiliation:
Fatigue and Fracture Lab Center of Excellence in Experimental Solid Mechanics and Dynamics School of Mechanical Engineering Iran University of Science and TechnologyTehran, Iran
M. R. Ayatollahi
Affiliation:
Dental Research Center Dentistry Research Institute Tehran University of Medical SciencesTehran, Iran
T. Hosseinzadeh Nik
Affiliation:
Department of Orthodontics Faculty of Dentistry Tehran University of Medical SciencesTehran, Iran
*
*Corresponding author (a.karimzadeh.66@gmail.com)
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Abstract

This study investigates the effect of bracket bonding-debonding on the tribological properties of human tooth enamel, when two different adhesives are applied. The nano-scratch experiment was performed on the enamel at untreated and under the bracket regions to obtain wear resistance, scratch hardness and friction coefficient. The results indicated that the tribological properties of the enamel vary significantly after bracket bonding-debonding. However, no significant difference exists between the effects of bracket bonding by the nano-composite and the composite adhesives on the tribological properties. Therefore, considering the mechanical and physical properties of the nano-composite adhesive, its bond strength for orthodontic bracket bonding and the influences on the enamel after removing the bracket, the use of nano-composite adhesive is suitable for orthodontic treatments.

Keywords

Wear-resistantFrictionScratch hardnessPolymer composite
Type
Research Article
Information
Journal of Mechanics , Volume 35 , Issue 2 , April 2019 , pp. 279 - 287
Copyright
© The Society of Theoretical and Applied Mechanics 2017 

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