Olmos AL, Burak MY

Language: Spanish
References: 21
Page: 5-11
PDF size: 311.09 Kb.

ABSTRACT

Previous investigations into the hyoid bone position have employed various analyses, most of which have related the cranium hyoid bone. These studies also remarked on the great variability of the hyoid position on even slight movement of the head. It appears that both small changes may be intimately related. The hyoid triangle and cervical vertebrae analysis were applied to a sample of fifty-one patients with hemifacial microsomia, one of these, 29 (57%) was male and 22 (43%) female, from 3.0 to 27.6 years old (mean age 10.39 and standar deviation of 5.63). Seventeen (33%) of these patients with grade I; 13 (76%) unilateral and 4 (24%) bilateral. Twenty-eight (55%) with grade II; 25 (89%) unilateral and 4 (11%) bilatral. Six (12%) with grade III. The anteroposterior position of the hyiod bone relative to the cervical vertebrae was increased in this sample, but the distance of the hyoid bone to mandibular symphysis decreased. The angles NSL-OPT, OPT-HOR, NSL-VER, NSL-CVT were increased. The conclusion was that patients with hemifacial microsomia present a posterior position of the head, vertical growth, posterior rotation of the mandibule and an Angle class II in the hyoid bone position has not sexual dimorphism. This finding indicates that the position of the hyoid bone is very important in the position of the head.

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