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Chair-Time During Polishing with Different Burs and Drills After Cement Customized Brackets Bonding: An In Vitro
Javier Flores-Fraile1, Alba Belanche Monterde1, Oscar Alonso-Ezpeleta2
1Department of Surgery, Faculty of Medicine and Dentistry, University of Salamanca, 37008 Salamanca, Spain.
Dentistry Journal
|August 27, 2025
Summary
A tungsten carbide bur is the most efficient tool for polishing after lingual bracket removal, significantly reducing chair-time in orthodontic treatments. This method ensures safety and effectiveness in dental procedures.
Area of Science:
- Dental materials science
- Orthodontic technology
- Clinical dentistry
Background:
- Digital planning and technological advancements are increasing dental efficiency.
- Indirect bonding with CAD-CAM software aims to reduce patient visits and chair-time in orthodontics.
- Optimizing debonding and polishing protocols is crucial for efficiency across various dental specialties.
Purpose of the Study:
- To evaluate the efficiency of different burs and drills for polishing after lingual bracket debonding.
- To determine the safest and most time-efficient protocol for removing cement remnants from enamel.
- To compare polishing times and identify statistically significant differences between various instruments.
Main Methods:
- 504 teeth embedded in epoxy resin models were used.
- Customized lingual multibracket appliances were bonded and subsequently debonded.
- Cement remnants were polished using three different burs and two drills, with polishing time recorded.
Main Results:
- Significant statistical differences (p < 0.005) were found between diamond bur, tungsten carbide, and white stone burs.
- Diamond burs were identified as the slowest polishing instrument.
- Tungsten carbide burs were found to be the safest option for enamel polishing.
Conclusions:
- A tungsten carbide bur mounted in a turbine represents the most efficient polishing protocol after lingual bracket debonding.
- A two-step protocol involving a tungsten carbide bur followed by polishers is recommended for optimal results.
- Efficient polishing protocols are essential, especially in lingual orthodontics due to access difficulties.
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