1614 Effect of different alveolar bone heights on displacement of maxillary central incisor during tooth movement : Analysis by three-dimensional finite element method

Abstract

There are increasing number of adult patients who present at orthodontic clinics. Unlike young patients, many adult patients tend to have lower alveolar height due to the aging and periodontitis. For appropriate orthodontic tooth movement for these patients, it is important to clarify the relationship between the alveolar bone height and the center of resistance in teeth. In the present study, the three-dimensional finite element model which had various alveolar bone height of the maxillary central incisor was created, and the location of the center of resistance was examined. The results showed that the center of resistance sifted to the apical side in the long axis of the incisor according to the decrease in the alveolar bone height.