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Related Experiment Videos

Enhanced dental cutting through chemomechanical effects.

J A von Fraunhofer1, S C Siegel

  • 1School of Dentistry, University of Maryland, Baltimore 21201, USA. avf001@dental.umaryland.edu

Journal of the American Dental Association (1939)
|October 24, 2000
PubMed
Summary

Adding mouthwash to dental handpiece coolant significantly enhances bur cutting rates. This improves efficiency and extends bur lifespan during dental procedures.

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Area of Science:

  • Dental materials science
  • Biomaterials engineering
  • Dental instrumentation

Background:

  • Surface-active agents in irrigation water can improve cutting rates (CRs) in dental procedures.
  • Previous research indicated potential benefits, but this study simulated clinical conditions.

Purpose of the Study:

  • To evaluate the effect of mouthwash additions to coolant water on the cutting performance of dental burs.
  • To determine if mouthwash enhances cutting rates and bur longevity under simulated dental practice conditions.

Main Methods:

  • A controlled cutting system was used to cut machinable glass ceramic (Macor) with diamond and carbide burs.
  • Coolant water with varying mouthwash concentrations (Scope) was employed.
  • Cutting rates (CRs) were measured by the time taken to transect the material.

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Main Results:

  • Mouthwash additions significantly accelerated CRs for both carbide and diamond burs compared to water alone.
  • Optimal mouthwash concentrations (1:5 and 1:10) showed a two- to threefold increase in CRs.
  • Mouthwash maintained higher CRs during prolonged cutting, unlike water alone.

Conclusions:

  • Low concentrations of mouthwash in handpiece irrigant significantly enhance dental bur cutting performance.
  • Mouthwash addition leads to faster and more sustained cutting, improving efficiency and potentially reducing procedure time.