被蓋を改善した反対咬合者の顎関係の成長変化

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Prepubertal anterior cross bite is generally improved during the first phase of treatment, but it is difficult to predict growth changes in jaw relationships after that. The purpose of this study was to investigate growth changes in jaw relationships after correction of anterior cross bite. Thirty-seven Japanese girls who had anterior cross bite at the first inspection were examined. The dental age was IIIA or IIIB, and the anterior cross bite was improved in the first phase of orthodontic treatment. In all cases, no orthopedic appliances were used during the pubertal growth. Lateral cephalograms taken at the first inspection, just after the improvement of anterior cross bite and at the postpubertal stage, were used to analyze craniofacial morphology and growth changes in sagittal jaw relationships. Correlation analysis and regression analysis were performed between postpubertal jaw relationships and craniofacial morphology of the first inspection, and just after improvement of anterior cross bite. The results were as follows. Growth changes in jaw relationships during the first phase of the treatment and after improvement of anterior cross bite were common. From the results of correlation analysis, several cephalometric variables had significant correlations with the postpubertal jaw relationships, but the standard errors from the simple regression equations were comparatively large. Multiple regression equations were more precise than the simple regression equations, because the standard errors from the multiple regression equations were smaller than those from the simple ones. But, the standard errors of the estimate were not clinically satisfied. The results suggest that cephalometric variables associated with cranial base morphology and temporomandibular joint location should be considered for more precise prediction.
福岡歯科大学学会の論文
2004-03-23

被蓋を改善した反対咬合者の顎関係の成長変化

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