Orthodontic brackets friction changes after clinical use: A systematic review

Area of Science:

• Orthodontics
• Biomaterials Science

Background:

• Clinical use of orthodontic brackets can alter their surface properties.
• Evaluating changes in bracket-wire friction force post-clinical use is crucial for treatment efficacy.

Purpose of the Study:

• To systematically review and evaluate the bracket-wire friction force of orthodontic brackets after clinical use.

Main Methods:

• A comprehensive systematic search of multiple electronic databases was conducted.
• Included were in-vitro studies analyzing friction force changes before and after clinical bracket use.
• Risk of Bias was assessed using the Downs and Black checklist.

Main Results:

• Seven studies met the inclusion criteria, all comparing friction force before and after clinical use.
• Most studies reported an increase in friction force after intraoral aging.
• A significant lack of high-quality evidence was identified in this research area.

Conclusions:

• Clinical use increases bracket surface roughness, leading to higher coefficient of friction (COF) and friction force.
• Further high-quality studies are required to obtain more reliable results on bracket friction.
• Findings suggest potential implications for orthodontic treatment efficiency.