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[Effects of maxillary disjunction on canine impaction in patients presenting a maxillary transverse skeletal
Julien Wolff1, Renaud Rinkenbach2, Bruno Grollemund3
143, rue de Rathsamhausen, 67100 Strasbourg, France.
Introduction:
This study focuses on the effects of rapid maxillary disjunction on the tendency to canine impaction in patients displaying a maxillary transverse skeletal deficiency.
Materials And Methods:
Using the segmentation method described by Ericson and Kurol and modified by Lindauer, et al., a series of panoramic views taken before and after disjunction was studied to compare changes in the position of the tip of the maxillary canine depending on whether it was covered or not by the homolateral lateral incisor, according to the side and patient's sex. The cohort consisted of 193 patients, all treated using a palatal expander welded to bands.
Results:
A statistically significant improvement was observed in all categories regarding the position of the maxillary canine. Disjunction was successful in 87% of cases in our sample. No significant differences were found according to side or sex.