CORRELATION OF ANB, WITS APPRAISAL AND MCNAMARA ANALYSIS WITH MANDIBULAR CORPUS LENGTH IN CLASS I, II AND III ADULT PATIENTS VISITING TERTIARY CARE HOSPITAL

Abstract

This study was aimed to find out the correlation of mandibular corpus length with ANB, Wits appraisal, and McNamara analysis. Lateral cephalograms of 116 patients were selected as per inclusion/ exclusion criteria. The sample included both males and females with age range of 16 – 30 years. Each cephalogram was traced manually on acetate paper and the parameters were recorded. Statistical analysis was done using SPSS version 26 and Pearson correlation coefficient test was used to determine correlation among the various variables. The Pearson’s correlation coefficient showed that mandibular corpus length has a negative weak but significant correlation with Wits (r = -0.350, P = 0.000), positive weak but significant correlation with Nasion perpendicular to pogonion (r = 0.394, p=0.000), negative weak and insignificant correlation with ANB (r = -0.010, p=0.912) and positive weak but significant correlation with nasion perpendicular to point A (r = 0.184, p=0.048).With increase of mandibular corpus length the nasion perpendicular to pogonion and point A also increase significantly. The mandibular corpus length increases significantly with decrease in Wits.