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大学・研究所にある論文を検索できる 「A comparison of postoperative, three-dimensional soft tissue changes in patients with skeletal class Ⅲ malocclusions treated via orthodontics-first and surgery-first approaches」の論文概要。リケラボ論文検索は、全国の大学リポジトリにある学位論文・教授論文を一括検索できる論文検索サービスです。

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A comparison of postoperative, three-dimensional soft tissue changes in patients with skeletal class Ⅲ malocclusions treated via orthodontics-first and surgery-first approaches

岡本 大吾 東北大学

2021.03.25

概要

The aim of this retrospective study was to evaluate three-dimensional (3D) soft tissue and hard tissue changes after orthodontics-first approach (OFA) and surgery-first approach (SFA) after mandibular setback surgery. The OFA group consisted of 24 patients and the SFA group of 15 patients. All patients underwent bilateral sagittal split osteotomy, and were examined by lateral cephalograms and 3D optical scanner before surgery (T0) and 1 (T1), 3 (T2), 6 (T3), and 12 (T4) months after surgery. No significant between-group difference was evident up to 1 month after surgery, but significant differences emerged after 3 months. The SFA group at mandible exhibited more labial incisor inclination from T1 to T2 and T2 to T3 than did the OFA group (both p< 0.05), and the mandible in SFA group moved significant counterclockwise from T1 to T2 and from T2 to T3 . The soft tissue relapse rates of the OFA were 14.8% at T2 and 14.9% at T3, those of the SFA were 27.3% at T2 and 33.3% at T3 at mandibular symphysis area. I found that the soft tissue changes after the SFA differed significantly from those after the OFA; thus, soft tissue predictions require more care.

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