Abstract:

Objective:This study aimed atfinding sensitive indicators in diagnosing facial growth pattern by studying the relationship be- tween the indicators which can reflectfacial growth pattern according to the previous studies and posterior-anterior ratio.Methods: The cephalometric radiographs of 61 teenage children were measured, the posterior-anterior ratio and the other 12 indicators in- cluding Y-axis angle, facial axis angle, cranial basal angle, and the four angles (The sagittal horizontal planeswere analyzed using statistic methods.Results:The MP-SN angle was significantly coincided with the posterior-anterior ratio and Pearson coefficient is -0.922, and little correlation was found between the angles of four sagittal horizontal planes and the posterior-anterior ratio. The positive correlation was found between the length of mandibular ramus and posterior-anterior ratio.Conclusion:The sensitive indi- cators for confirming facial growth pattern are the posterior-anterior ratio and the MP-SN angle.

Key words: facial growth pattern, cephalometrics, dolichofacial branchyfacial