Evaluation of the variation of skeletofacial angles(facial,mandibular,and gonial angles) among the pubertal age groups: (A cephalometric study).

Abstract

Background: The skeletofacial growth pattern changes among pubertal age could or could not associate with the change in skeletofacial angles. These angles have a definite influence on skeletal relationships. The aim of this study was to determine the variation in the skeletofacial angles among the four pubertal age groups. Materials and method: The sample subjects were aged between 11-14 years. The criteria for the sample selection were normal class I molar occlusion with normal overbite and over jet (1- 4 mm), no detectable dental crowding or spacing, no rotations and no history of previous orthodontic treatment and/or craniofacial surgery. All the subjects were radiographed with lateral cephalometric films. The radiographs were traced and the skeletofacial angles were measured and the data were subjected to statistical analysis using the analysis of variance, Duncan multiple range test and t-test at p < 0.05 for gonial (Ar-Go-Me) and Mandibular plane angles (FH/GoMe). Results: The facial angle (FH/NPog) showed no significant difference among the age groups in males only, while in females the facial angle displayed a significantly higher value at 13 years group as compared with both 11 years and 12 years groups. Comparison between the genders revealed a significantly lower value in males than females for the facial angle at 13 years group only. Conclusion: The skeletofacial angles gonial and Mandibular plane angles demonstrated no significant change among the four age groups for both gender and no significant difference was noticed between males and females at 11, 12, and 14 years age groups for all angles.