Soft, hard-tissues and pharyngeal airway volume changes following maxillomandibular transverse osteodistraction: Computed tomography and three-dimensional laser scanner evaluation

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• 作者：Francesca Antonella Bianchi^a ; ^{p_f_bianchi@libero.it} ; Giovanni Gerbino^a ; Marina Corsico^b ; Eleonora Schellino^a ; Niccolò ; Barla^c ; Laura Verzè ; ^c ; Guglielmo Ramieri^a
• 关键词：Orthognathic surgery ; Surgically assisted rapid maxillomandibular expansion ; Airway changes ; Three-dimensional surface laser scanner ; Osteodistraction
• 刊名：Journal of Cranio-Maxillofacial Surgery
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：45
• 期：1
• 页码：47-55
• 全文大小：1284 K
• 卷排序：45

文摘

Maxillomandibular transverse osteodistraction (MMTOD) is an alternative approach to the traditional treatment for transverse maxillary and mandibular deficiencies and crowding. The aim was to report soft and hard-tissues changes and airway volume variation.MethodsIn this study, skeletally mature, non-syndromic patients with transverse maxillary and mandibular hypoplasia, who underwent a MMTOD between 2010 and 2012, were included. Surgical changes were analysed using clinical evaluation, three-dimensional facial surface data and computed tomography analysis before (T0) and after the completion of post-op orthodontic treatment (T1).ResultsNineteen patients (eight males and eleven females; average age: 26.3 years) were enrolled. MMTOD produces facial changes in the cheek, paranasal areas, nasal base and chin. Facial changes are mostly explained by the underlying skeletal movements, which are essentially represented by the transverse enlargement of both the maxilla and the mandible. Following MMTOD, the airway volume and the lateral dimension of the cross-sectional airway increased significantly.ConclusionsMMTOD is a technique that allows an increase in airway volume and in both maxillary and mandibular arch perimeters simultaneously by increasing skeletal width. Facial appearance is improved and a stable occlusion is obtained.