頁籤選單縮合
題 名 | Investigating the Postoperative Soft Tissue Changes in Different Vertical Facial Divergent Patients with Mandibular Prognathism |
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作 者 | Tseng, Yu-chuan; Wu, Ting-yu; Lu, Chao-yu; Chou, Szu-ting; Lin, Shih-hsuan; Chen, Chun-ming; | 書刊名 | Journal of Dental Sciences |
卷 期 | 19:3 2024.07[民113.07] |
頁 次 | 頁1443-1451 |
分類號 | 416.957 |
關鍵詞 | Mandibular prognathism; Hyperdivergence; Normodivergence; Mandibular setback; Postoperative soft tissue changes; Cone-beam computed tomography; |
語 文 | 英文(English) |
DOI | 10.1016/j.jds.2024.03.024 |
英文摘要 | Background/purpose The extent of three-dimensional soft tissue changes in patients with varied facial skeletal patterns following mandibular setback surgery remains unclear. In this study, we aimed to investigate the postoperative changes in soft tissue chin thickness among mandibular prognathism patients, focusing on those presenting different divergence patterns, such as hyperdivergent and normodivergent patients. Materials and methods Cone-beam computed tomography images were obtained from 56 skeletal Class III patients who underwent only mandibular setback. Based on vertical craniofacial skeletal relationship, patients were divided into normodivergent group (27°<SN-MP<37°) and hyperdivergent (SN-MP>37°) group. The three-dimensional displacements of Infradentale (Id), B point (B), and Pogonion (Pog), the soft tissue thickness of Id-Li (Labrale inferius), B-B' (soft tissue B point), and Pog-Pog’ (soft tissue Pog point) were measured. Factors influencing the change in soft tissue thickness were investigated. Results Preoperative B-B' and Pog-Pog’ thickness were significantly thinner in the hyperdivergent group than normodivergent group. Postoperative changes in B-B' and Pog-Pog’ thickness were significantly larger in the hyperdivergent group than normodivergent group. A significant correlation was found between soft tissue thickness change (B-B' and Pog-Pog’) and the preoperative soft tissue thickness and superior movement (B and Pog). Conclusion Hyperdivergent patients with skeletal class III have thinner preoperative soft tissue thickness (B-B' and Pog-Pog’) than normodivergent patients in the preoperation. Postoperative changes in B-B' and Pog-Pog’ thickness were significantly larger in the hyperdivergent group than normodivergent group. Postoperative superior movement of B and Pog correlated with postoperative change of soft tissue thickness. |
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