The relationship between overjet and skeletal parameters in untreated class II subjects

Abstract

The aim of the present study was to evaluate the association between skeletal and dentoalveolar parameters and overjet in untreated Class II subjects.
The lateral cephalograms of 75 untreated Class II Caucasian individuals (37 males and 38 females), between 18 and 25 years of age, were studied. The participants were divided into three groups based on the overjet value. The mean values of 14 variables measured on lateral cephalograms were calculated. Differences between the three groups were tested using one- way analysis of variance (ANOVA).
A statistically significant positive correlation was found between the values of overjet and ANB. Subjects with normal overjet showed horizontal facial pattern and posterior inclination of the maxilla, whereas increased overjet subjects exhibited a neutral facial pattern. In contrast, subjects with extreme overjet had a vertical facial pattern and anterior inclination of the maxilla; upper incisors were proclined and lower incisors were inclined.