1Department of prosthodontics, Sri Hasanabha Dental College and Hospital, Hassan, Karnataka, India.
2M. R. Ambedkar Dental College and Hospital, Bangalore, Karnataka, India
Online published on 22 June, 2012.
To determine the parallelism of the occlusal plane to the different alatragal lines and to evaluate the parallelism of maxillary and mandibular residual ridges/basal bone to the three ala tragal lines.
Forty dentulous and forty edentulous subjects were included in the study. Four radiological markers have been placed-one each on superior, middle, inferior position of tragus and one at the ala of the nose. Lead foil is placed on the intaglio surface of the maxillary and mandibular dentures. Then the Lateral cephalograms was made and traced.
Was subjected to ANOVA test and post hoc test of Bonferroni.
The alatragal line passing through the inferior position of the tragus to the ala of the nose is relatively parallel to the reference planes studied and helps to establish occlusal plane during complete denture fabrication.
Alatragal lines, Maxillary –Mandibular angle, Maxillary Occlusal Plane Angle, Maxillary Residual Alveolar Ridge Plane, Mandibular Residual Alveolar Plane
