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- Title
Exploration for micro-osteotomy assisted orthodontic treatment of skeletal Class III malocclusions with alveolar hypoplasia in the lower anterior region.
- Authors
WANG Bo; SHEN Guo-fang; FANG Bing; SUN Liang-yan; WU Yong; JIANG Ling-yong; ZHU Min
- Abstract
PURPOSE: To investigate the changes of periodonta] conditions after micro-osteotomy assisted lower incisor decompensation for skeletal Class III malocclusions with alveolar hypoplasia in the lower anterior region. METHODS: The sample consisted of 22 cases diagnosed as skeletal Class III malocclusions with alveolar hypoplasia in the lower anterior region, selected from consecutive patients of Department of Oral & Cranio-maxillofacial Science of Shanghai Ninth People's Hospital during 2009-2012. The Samples were divided into 2 groups, G1 comprised 10 patients who accepted micro-osteotomy assisted lower incisor decompensation; G2 comprised 12 patients who chose traditional pre-surgical decomposition. The changes of periodontal conditions of both groups were evaluated with the help of cone--beam CT (CBCT). Data was processed using SAS8.02 software package. RESULTS: For subjects in G1, during the micro-osteotomy assisted pre-surgical orthodontics, no significant difference was found in the amount of root resorption of lower incisors.But labial and lingual vertical alveolar bone loss were 2.60 mm and 2.22 mm;alveolar bone thickness increased by 3.05 mm on the labial side and decreased by 0.88 mm on the lingual side (P<0.05). Better periodontal conditions were reserved compared with those of G2. CONCLUSIONS: Micro-osteotomy assisted pre-surgical orthodontics was much safer than traditional orthodontics for skeletal Class HI malocclusions with alveolar hypoplasia in the lower anterior region. Supported by National Natural Science Foundation of China (10972142), Research Fund of Science and Technology Commission of Shanghai Municipality (08411961600) and Program for Innovative Research Team of Shanghai Municipal Education Commission.
- Subjects
OSTEOTOMY; ORTHODONTICS; MALOCCLUSION; ALVEOLAR process; MAXILLOFACIAL surgery; CONE beam computed tomography; INCISORS
- Publication
Shanghai Journal of Stomatology, 2012, Vol 21, Issue 5, p535
- ISSN
1006-7248
- Publication type
Article