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



Karimzadeh A1 ; Ayatollahi MR1 ; Hosseinzadeh Nik T2, 3
Authors
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Authors Affiliations
  1. 1. Fatigue and Fracture Lab, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
  2. 2. Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Orthodontics, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran

Source: Journal of Mechanics Published:2019


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. © 2017 The Society of Theoretical and Applied Mechanics.
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