THE RELATIONSHIP BETWEEN THE LOWER INCISORS CROWDING AND THE SAGITTAL POSITION OF THE CHIN IN ADOLESCENTS IN THE SYRIAN COAST

Aim the purpose of this study was to investigate the relationship between the lower incisors crowding
and the sagittal position of the chin in adolescents in the Syrian coast Materials and methods sample's
study contained mandibular dental study casts, and lateral cephalometric graphs of a pretreatment
patients who were undergoing orthodontic evaluation at the Department of Orthodontics and
Dentofacial Orthopedics at Tishreen University (18 males and 63 females of Syrian coast origin with
mean age of 17.7 years).Patient's lower cast and Lateral cephalogram were scanned, digitized,
analyzed. Little’s Irregularity Index, S-Na-Pog and S-Na-B angles were obtained. Levene's Test for
Equality of Variances, t-test and Pearson's Correlation Coefficient were calculated. Results A
statistical significance, negative correlation was found between values of LittleI irregularity index and
both of S-Na-Pog and S-Na-B angles values within all sample's subjects (except of Severe Irregularity
Group subjects).Conclusions sagital lower incisors crowding amongst adolescents in the Syrian coast
population have a correlation with the sagittal position of the chin.