Cephalometric evaluation of the effects of pendulum appliance on various vertical growth patterns and of the changes during short-term stabilization

The aim of this study was to evaluate the effects of the pendulum appliance in dental Class II patients with varying vertical growth patterns and to evaluate the changes during the short-term stabilization period of 3 months. The sample (n=30) was divided into two groups based on their FMAo. The high-angle group consisted of 14 patients (10 girls and 4 boys) and had a mean age of 157.798.0 months. The low-angle group consisted of 16 patients (8 girls and 8 boys) and had a mean age of 155.5918.6 months. Pretreatment, posttreatment and poststabilization cephalometric radiographs were obtained to measure the changes. Mann-Whitney U and Wilcoxon tests were used for statistical evaluation. The amount of upper molar distalization was 5.9 mm (p<0.001) in the high-angle group and 1 mm (p<0.001) in the low-angle group, showing no intergroup difference. The amount of anchorage loss at the second premolars was 4.8 mm (p<0.001) in the high-angle group and 6.6 mm (p<0.001) in the low-angle group. Upper incisors moved anteriorly for 2.1 mm (p<0.05) in the high-angle group and 4.1 mm (p<0.001) in the low-angle group. Intergroup difference was statistically significant (pB0.001). During the stabilization period, 1.5 mm of anchorage loss was measured at the upper molar region in the high-angle group and 1.7 mm of anchorage loss was measured at the upper molar region in the low-angle group. During the stabilization period, upper second premolars and incisors tended to move back to their original places. The results of this study showed that pendulum appliance could move the upper molars distally in a short period of time without depending on the patient compliance. Care should be taken to prevent anchorage loss and to stabilize the upper molars for, at least, 3 months. © Munksgaard 2001

Autotransplantation of impacted teeth: A report of 3 cases and review of the literature

PubMedID: 19626234Transplantation of one's own teeth from one site to another is called dental autotransplantation. Because tooth transplantation allows dentofacial development and maintains alveolar bone volume, it is a viable treatment method, especially in young patients with missing teeth or tooth agenesis. Three cases are presented in which missing or agenetic teeth were replaced by autotransplantation of impacted teeth. This article illustrates the option of using impacted teeth as a viable reservoir for autotransplantation in young patients with missing permanent teeth. © 2009 by Quintessence Publishing Co Inc