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Shanghai Kou Qiang Yi Xue. 2012 Oct;21(5):535-40.

[Exploration for micro-osteotomy assisted orthodontic treatment of skeletal Class III malocclusions with alveolar hypoplasia in the lower anterior region].

[Article in Chinese]

Author information

1
Department of Oral & Cranio-Maxillofacial Science, Shanghai Jiao Tong University School of Medicine, Shanghai, China. wb228@126.com

Abstract

PURPOSE:

To investigate the changes of periodontal 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 III malocclusions with alveolar hypoplasia in the lower anterior region.

PMID:
23135184
[Indexed for MEDLINE]
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