Prevalence And Gender Association Among Different Types Of Nasolabial Angles

Various pre-treatment soft tissue analyses have always been used to determine facial aesthetics, thus offering an important diagnostic tool to clinicians. A frequently used soft tissue parameter in orthodontic diagnosis is the nasolabial angle. The nasolabial angle is defined as the angle between the line drawn through the midpoint of the nostril aperture and a line drawn perpendicular to the Frankfurt horizontal while intersecting subnasale. This study was done to determine the prevalence and gender association of different types of nasolabial angles. This was a retrospective study. Samples were collected from the patient record archive from a private dental institution and used for the purpose of the study. Data of different types of nasolabial angles were collected for patients of all the age groups. Excel tabulation was done and SPSS results were obtained. In the present study, the prevalence of straight nasolabial angle was 95%, prevalence of acute nasolabial angle was 4% and the prevalence of obtuse nasolabial angle was 1% and the results were statistically significant (p<0.05). From the present study, we can conclude that the prevalence of straight nasolabial angles was more common in both male and female population and among various age groups when compared to acute and obtuse nasolabial angles