De Oliveira Danilo Louzada, Calcagnotto Thiago, Vago Thessio Mina, Filho Hugo Nary, Valarelli Danilo Pinelli, Bellato Caio Peres
Department of Oral and Maxillofacial Surgery, Universidade Do Oeste Paulista, Presidente Prudente, Bauru, SP, Brazil.
Department of Oral and Maxillofacial Surgery, Faculdade Tecnológica Dental CEEO, Igrejinha, RS, Brazil.
Ann Maxillofac Surg. 2017 Jul-Dec;7(2):256-259. doi: 10.4103/ams.ams_136_17.
This study aimed to quantify, using cone-beam computed tomography (CBCT) in patients who underwent a mandibular advancement surgery associated with genioplasty, three-dimensional changes in airway space and to evaluate whether these changes differ between men and women.
Preoperative and 8-month postoperative CBCT scans of 38 patients aged 18-45 years of either sex and any ethnicity who underwent mandibular advancement surgery associated with genioplasty were analyzed using the Xoran software (Xoran Technologies, Ann Arbor, MI, USA). The linear distances gonion-gnathion (Go-Gn) and condylion-menton (Co-Me) were obtained. Airway volume was measured using the Dolphin Imaging software, version 11.0. Then, data were tabulated and analyzed using Student's -test.
Mean patient age was 30.3 years; 39.47% were men and 60.63% were women. The mean Go-Gn distance was 72.05 mm before surgery and 78.56 mm after surgery, with a mean gain of 6.51 mm. The mean Co-Me distance was 113.47 mm before surgery and 119.89 mm after surgery, with a mean increase of 6.42 mm. Both differences were statistically significant. The mean volume of airway space was 17,272.92 mm before surgery and 24,173.74 mm after surgery, with a statistically significant mean increase of 6900.82 mm. There was no statistically significant difference in mean volumetric gain between men (7566.69 mm) and women (7456.69 mm).
Mandibular advancement surgery results in significant increase of airway space, and there is no difference in airway volume between men and women.
本研究旨在使用锥形束计算机断层扫描（CBCT）对接受下颌前徙术联合颏成形术的患者气道空间的三维变化进行量化，并评估这些变化在男性和女性之间是否存在差异。
使用Xoran软件（美国密歇根州安阿伯市Xoran Technologies公司）对38例年龄在18至45岁、性别不限、种族不限且接受下颌前徙术联合颏成形术的患者术前及术后8个月的CBCT扫描进行分析。获取下颌角点-颏下点（Go-Gn）和髁突点-颏下点（Co-Me）的线性距离。使用Dolphin Imaging软件11.0版测量气道容积。然后，将数据制成表格并采用学生t检验进行分析。
患者平均年龄为30.3岁；男性占39.47%，女性占60.63%。术前Go-Gn平均距离为72.05mm，术后为78.56mm，平均增加6.51mm。术前Co-Me平均距离为113.47mm，术后为119.89mm，平均增加6.42mm。两者差异均具有统计学意义。术前气道空间平均容积为17272.92mm³，术后为24173.74mm³，平均增加6900.82mm³，差异具有统计学意义。男性（7566.69mm³）和女性（7456.69mm³）的平均容积增加量无统计学差异。
下颌前徙术可使气道空间显著增加，且男性和女性的气道容积无差异。
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