RELATION OF ALA TRAGUS LINE WITH OCCLUSAL PLANE IN DIFFERENT FACIAL FORMS IN DELHI POPULATION

The aim of this study was to check the parallelism of ala tragus line with occlusal plane in different facial forms with the help of cephalograms in dentulous subjects. A total of 200 dentulous subjects (100 female and 100 male) were selected in an age group of 18-30 years to obtain the lateral cephalograms.. To evaluate the facial form, the bizygomatic width and facial length were measured using a digital caliper from Nasion to Gnathion (N‑Gn).. Facial form was then obtained from the formulae (N-Gn/ Bi Zygomatic width)×100 and divided into leptoprosophic, mesoprosopic and euryprosopic. The results of this study demonstrated that in maximum percentage of the participants, the occlusal planes were parallel to lines joining the inferior borders of the ala of the nose and the middle parts of the tragus.