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Related Experiment Videos

The relationship between bite depth and incisor angular change.

B B Eberhart1, M M Kuftinec, I M Baker

  • 1University of Louisville School of Dentistry, KY 40292.

The Angle Orthodontist
|January 1, 1990
PubMed
Summary

Altering incisal angle significantly impacts bite depth and overbite. A geometric model shows that each degree of incisal angular change can shift overbite by 0.1-0.2 mm.

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Area of Science:

  • * Dental biomechanics and geometric modeling.
  • * Orthodontic and dental anatomy analysis.

Background:

  • * Understanding the relationship between incisal angle and bite depth is crucial for dental treatments.
  • * Incisor length is constant, allowing for geometric analysis of overlap.
  • * Tipping can be controlled or uncontrolled, affecting outcomes.

Purpose of the Study:

  • * To develop a geometric model estimating the effect of incisal angular position on bite depth.
  • * To quantify the change in overbite resulting from incisal angular adjustments.

Main Methods:

  • * A two-dimensional geometric model was created.
  • * Calculations were based on constant incisor lengths forming triangle sides.
  • * Distinction between controlled and uncontrolled tipping based on rotation centers.

Main Results:

  • * A direct correlation between incisal angle and bite depth was established.
  • * Overlap was calculated as a function of changing angular positions.
  • * An average change of 0.1 to 0.2 mm in overbite per degree of incisal angular change was observed.

Conclusions:

  • * Incisal angular position is a key determinant of effective bite depth.
  • * The developed model provides a quantitative estimate for overbite changes due to incisal angulation.
  • * Findings are relevant for orthodontic planning and predicting treatment outcomes.

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