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Third molar influence on dental arch crowding
1Department and Clinic of Maxillofacial Surgery, Medical University of Silesia, Katowice, Poland. stomgab@wp.pl
European Journal of Orthodontics
|August 4, 2005
Summary
Third molar removal may influence lower incisor crowding. The Ganss ratio, assessing space around third molars, significantly correlated with changes in dental arch dimensions, aiding in predicting crowding.
Area of Science:
- Dentistry
- Orthodontics
- Oral Surgery
Background:
- Third molars (wisdom teeth) can impact dental arch dimensions.
- Understanding their influence on lower incisor crowding is crucial for orthodontic treatment planning.
Purpose of the Study:
- To measure dental arch changes after third molar removal or retention.
- To assess the correlation between third molar space and lower incisor crowding.
Main Methods:
- Longitudinal study of 47 patients over three years.
- Measurements of dental arch length, width, and crowding using study models.
- Calculation of the Ganss ratio from dental pantomograms (DPTs).
Main Results:
- Significant changes in lower incisor crowding and arch dimensions were observed.
- The Ganss ratio showed a statistically significant relationship with these changes.
- The ratio of retromolar space to third molar crown width was a key factor.
Conclusions:
- The Ganss ratio can help predict dental arch crowding.
- This ratio may assist in determining the optimal timing for third molar removal.
- Informed decisions regarding third molar management can improve orthodontic outcomes.