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Related Experiment Videos

Dentinal surface roughness: a comparison of tooth preparation techniques

J J Wahle1, S L Wendt

  • 1Department of Prosthodontics, University of Connecticut Health Center, School of Dental Medicine, Farmington.

The Journal of Prosthetic Dentistry
|February 1, 1993
PubMed
Summary

Standardizing dentinal surfaces is crucial for dental material testing. Diamond burs and silicon carbide papers create comparable surface roughness, aiding in reproducible in vitro dental research.

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Area of Science:

  • Dentistry
  • Biomaterials Science
  • Surface Engineering

Background:

  • Standardized dentinal surfaces are essential for reliable in vitro evaluation of dental luting and bonding agents.
  • Current preparation methods yield variable results, impacting the accuracy of adhesion and performance studies.

Purpose of the Study:

  • To compare the surface roughness of dentinal preparations created by different dental instruments.
  • To identify preparation methods that yield reproducible and standardized dentinal surfaces for in vitro research.

Main Methods:

  • Forty-eight human molars were prepared using silicon carbide paper, carbide burs, or diamond burs under a dental handpiece with water spray.
  • Surface roughness of the prepared dentinal surfaces was quantitatively analyzed using a profilometer.

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  • Statistical analysis was performed using ANOVA and the Student-Newman-Keuls post hoc test.

    • Main Results:

    • Significant differences (p < 0.0001) in dentinal surface roughness were observed among various preparation methods.
    • Super coarse, coarse, and medium grit diamond burs, when used with a high-speed handpiece and water spray, produced surfaces statistically similar to those prepared with 60-grit silicon carbide paper.
    • Fine grit diamonds mimicked surfaces prepared with 60-120 grit silicon carbide papers, while carbide burs produced variable surfaces depending on the manufacturer.

    Conclusions:

    • Certain diamond burs, particularly when used with high-speed handpieces and water spray, can effectively standardize dentinal surfaces for in vitro testing.
    • The findings provide a basis for selecting appropriate preparation methods to achieve reproducible dentinal surface characteristics in dental research.
    • Carbide burs offer less predictable surface preparation outcomes compared to diamond burs and abrasive papers.