Background:  Obstructive Sleep Apnoea (OSA) is a common disorder seen in young and adults. It is a potentially life–threatening condition in which periodic cessation of breathing occurs during sleep in the presence of inspiratory effort. This affects not only the quality of life but also has a significant morbidity.

Aim: is to correlate types of soft palate in healthy and patients suffering from obstructive sleep apnea. The objective is to study the effect of change in BMI over prevalence of OSA.

Materials and methods: This study comprised of 20 diagnosed patients of obstructive sleep apnoea and 20 normal subjects whose Digital lateral cephalograms were made and body mass index calculated.

Results: Butt type of soft palate was common in sleep apnoea patient while leaf type was more common in normal population. High BMI index were commonly seen with butt type of soft palate in apnoea patients.

Conclusion: Dentist and radiologist who observes hooked/ butt appearance of soft palate on lateral cephalogram should suspect the strong possibility of the presence of OSAS.