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The tooth-width relation of the incisors in closed bite
1Department of Orthodontics, Frankfurt/Main, Germany. G.Schuster@em.uni-frankfurt.de
Summary
This study found no link between closed bite and front tooth width ratios across different patient groups. Dental records of 1,100 patients showed no changes in tooth width related to Angle classes or overbite.
Area of Science:
- Dentistry
- Orthodontics
- Dental Morphology
Background:
- The concept of "closed bite" in dentistry is often linked to issues with the relationship between front teeth.
- Previous literature suggests potential correlations between closed bite and specific dental measurements.
Purpose of the Study:
- To investigate the association between "closed bite" and the width ratio of front teeth.
- To determine if this relationship varies with common orthodontic classifications and cephalometric parameters.
Main Methods:
- Evaluation of dental records, including models and cephalograms, from 1,100 patients.
- Application of Tonn's index to assess the width ratio of front teeth.
- Analysis correlated findings with Angle classes, growth type, axial inclination of central upper incisors, interincisal angle, and overbite.
Main Results:
- No statistically significant evidence was found to support a change in the front teeth width ratio in patients with "closed bite".
- The width ratio remained consistent regardless of Angle classification, growth pattern, incisor inclination, interincisal angle, or degree of overbite.
Conclusions:
- The study's findings do not support the hypothesis that "closed bite" is associated with altered front tooth width ratios.
- Clinical and cephalometric parameters commonly used in orthodontics do not appear to influence the front teeth width ratio in the context of "closed bite".