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Related Experiment Videos

Studies on dental high-speed cutting

W M Liao1, M Taira, K Ohmoto

  • 1Department of Operative Dentistry, Hiroshima University School of Dentistry Japan.

Journal of Oral Rehabilitation
|January 1, 1995
PubMed
Summary

Intermittent cutting with moderate force (I-m) demonstrated superior cutting effectiveness on bovine enamel and dentine compared to successive cutting (S-m). This study investigated dental cutting techniques and their impact on material removal.

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Area of Science:

  • Dental materials science
  • Biomaterials engineering
  • Mechanical cutting analysis

Background:

  • Understanding the efficiency of dental cutting instruments is crucial for optimizing procedures.
  • Bovine enamel and dentine are commonly used models for human tooth structure.
  • Diamond points are widely used in dental cutting applications.

Purpose of the Study:

  • To compare the cutting effectiveness of different techniques using diamond points on bovine enamel and dentine.
  • To analyze the influence of cutting force and technique on cutting parameters.
  • To evaluate cutting speed, applied load, and cutting volume.

Main Methods:

  • Bovine enamel and dentine were cut horizontally and vertically using diamond points.
  • Three cutting techniques were evaluated: successive cutting with moderate force (S-m), intermittent cutting with moderate force (I-m), and intermittent cutting with a smaller force (I-s).

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  • Rotational cutting speeds and applied loads were monitored, and cut contact times were recorded.

    • Main Results:

    • Cut contact times varied significantly: S-m (approx. 10s), I-m (approx. 0.4s), and I-s (approx. 0.25s).
    • Maximum applied loads ranged from approximately 35g (horizontal I-s cut of dentine) to 105g (vertical S-m cut of enamel).
    • Intermittent cutting (I-m) showed greater cutting effectiveness on both enamel and dentine compared to successive cutting (S-m).

    Conclusions:

    • Intermittent cutting techniques, particularly I-m, offer enhanced cutting effectiveness for diamond points on enamel and dentine.
    • Cutting direction and technique significantly influence the applied load during dental procedures.
    • Optimizing cutting parameters like force and intermittency can improve efficiency in dental cutting applications.