Menon Suresh, Sinha Ramen, Manerikar Ravi, Roy Chowdhury S K
Oral and Maxillofacial Surgery, Vydehi Institute of Dental Sciences, Bangalore, India.
J Maxillofac Oral Surg. 2010 Mar;9(1):57-9. doi: 10.1007/s12663-010-0016-9. Epub 2010 Jun 4.
A wide variety of disease processes produce alteration of midfacial skeletal growth, resulting in moderate-to-severe midface deficiency presenting as retrusion associated with Angle's class III malocclusion. Most cases of midface deficiency are seen in patients of cleft lip/palate. The surgical procedure to correct the clefts, undertaken over a long period of time from infancy to the teens tends to take its toll on the soft tissues over the midface. The scarring that is a feature in these conditions results in hampering of normal growth of the midface causing the deformity. Conventional procedures to correct the deformity by surgical advancement have been less than satisfactory in terms of success. This is where the concept of multidimensional growth using distraction proved useful. Today distraction has proved to be a versatile tool in the correction of midface deficiencies due to its various advantages. Six patients of cleft lip/palate were taken up for advancement of the hypoplastic midface using intra-oral distractors with successful and stable results.
多种疾病过程会导致面中部骨骼生长改变，从而造成中度至重度面中部发育不全，表现为与安氏III类错牙合相关的后缩。大多数面中部发育不全病例见于唇腭裂患者。从婴儿期到青少年期长期进行的修复腭裂的外科手术往往会对面中部的软组织造成损害。这些情况下的瘢痕形成会阻碍面中部的正常生长，导致畸形。通过手术前徙来矫正畸形的传统方法在成功率方面并不理想。在这种情况下，利用牵张成骨的多维生长概念被证明是有用的。如今，由于其各种优点，牵张成骨已被证明是矫正面中部发育不全的一种通用工具。六例唇腭裂患者采用口腔内牵张器进行发育不全面中部的前徙，取得了成功且稳定的效果。
