Comparison of hyoid bone position among cleft lip palate and normal subjects

ABSTRACT

To compare the hyoid bone position between cleft lip/palate and normal patients. Cross-sectional analytical study. Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences [DIEKIOHS], Dow University of Health Sciences [DUHS], Karachi, from March 2012 to February 2013. The sample for this study consisted of total 68 subjects among which Group 1 consisted of 34 nonsyndromic cleft lip and palate [both unilateral and bilateral] and Group 2 included 34 subjects with normal facial morphology. Both groups included males and females with mean age 14.3 +/- 0.1 year. Analysis was done on lateral cephalometric radiographs of patients including angulations taken as Hp-Mp, Hp-Ol, Hp-Sn, Cvt-Evt, Opt-Cvt, Nke, Sn-Vert, Cvt-Vert, Sn-Vert and linear distance of hyoid bone measured as C3-H, C3-RGN, and H-RGN. Statistically significant differences [p < 0.001] in C3-H, C3-Rgn, H-Rgn, and Sn-Cvt were found between cleft lip/palate group and normal group. Hyoid bone is located anteriorly and caudally in cleft lip and palate group