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논문 기본 정보

자료유형
학술저널
저자정보
Luo Huang (Affiliated Stomatology Hospital of Guangzhou Medical University) Zhicong Li (Affiliated Stomatology Hospital of Guangzhou Medical University) Jing Yan (Affiliated Stomatology Hospital of Guangzhou Medical University) Lunqiu Chen (Affiliated Stomatology Hospital of Guangzhou Medical University) Zhengguo Piao (Affiliated Stomatology Hospital of Guangzhou Medical University)
저널정보
대한악안면성형재건외과학회 Maxillofacial Plastic Reconstructive Surgery Maxillofacial Plastic Reconstructive Surgery 제43권
발행연도
2021.12
수록면
1 - 7 (7page)
DOI
10.1186/s40902-021-00323-5

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Objectives: The purpose of this study was to compare differences in facial soft tissue thickness in three-dimensional(3D) images before and after orthognathic surgery in patients with skeletal Class III malocclusion and to obtain a betterunderstanding of the relationship between hard and soft tissue changes after surgery. Materials and method: The present retrospective study included 31 patients with skeletal Class III malocclusion withmandibular chin deviation greater than 4 mm who had undergone cone-beam computed tomography before and 6months after surgery. Seven bilateral points were established. Measurements were taken from software-generatedmultiplanar reconstructions. The predictor variables were timing (pre- and postoperatively) and side (deviated vs. nondedicated). A regression model and correlation analysis were conducted for statistical analysis. Results: The difference of bilateral facial soft tissue thickness was statistically significantly different between deviatedand nondeviated sides (P < 0.05), with lower values observed on the deviated side. The soft tissue thickness hasbecome nearly symmetric at local regions of the lower thirds of the face after orthognathic surgery. However, mostmeasurements showed a negative correlation between changes in soft tissue thickness and changes in bone tissues. Conclusions: Skeletal Class III malocclusion with facial asymmetry is accompanied by differences in soft tissuethickness when comparing Dev and N-Dev sides of the posterior region of the mandible, where soft tissues are thinneron the Dev side. Soft tissue thickness can compensate for or camouflage the underlying asymmetric mandible. Inaddition, the asymmetric soft tissue thickness on the lower third of the face can be partially improved by orthognathicsurgery, but the amount of soft tissue thickness change is not consistent with that of hard tissue positional change.

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