Correlation Between Naso Labial Angle and Effective Maxillary and Mandibular Lengths in Untreated Class II Patients.

ABSTRACT

The soft tissue profile is one of the main concerns of orthodontic treatment. Naso labial angle (NLA) is one of the soft tissue cephalometric parameters being routinely analyzed in orthodontic diagnosis and treatment planning. A study is undertaken on the correlation of naso labial angle to effective maxillary and mandibular lengths, in patients with class II malocclusion. The mean NLA and maxillary and mandibular lengths in males and females with class II malocclusion and also the mean NLA for subjects in the different categories of crowding (Category 1 and Category 2) in patients with class II malocclusion is presented in the results. Positive correlations observed between NLA and maxillary and mandibular lengths were statistically not significant.