关键词: 下颌骨, 旋转, 种植体

Abstract:

Objective To evaluate the mandibular rotation in females aged from 9.5 to 15.5 years. Methods The sample was obtained from Mathews′s implant study with longitudinal cephalometric records of 13 untreated Caucasian female subjects. The cephalograms taken annually from 9.5 to 15.5 years old were traced and analyzed with Dentofacial Software. Paired-t test was performed to identify the significant growth changes in different age groups. Results Significant change in lower anterior facial height, posterior facial height, ramus length and mandibular implant plane angle were noted in aged 9.5-11.5. Significant change in lower anterior facial height, posterior facial height and ramus length were noted in aged 11.5 -13.5. Significant change in mandibular plane angle and mandibular implant plane angle and significant increase in posterior facial height were observed in aged 13.5-15.5. Conclusion The results of this study verify that remodeling on the lower border of mandible influences total mandibular rotation.

Key words: mandible, rotation, implant