The aime of this study was to determinethe effect of gender on the soft tissue of the
chin at each type of rotation patterns of the lower jaw (Anterior - normal - Posterior)
The sample consisted of 100 X-ray Lateral cephalometric radiographs of (69
female _ 31
male) adults, has been selected according to the following conditions: Age between 18-26
years old, , exclusion of all cases of Intenseocclusal abnormalities ,
Permanentocclusionand there is noformaldentalabnormalitieswithout takinginto accountthe
thirdmolars, The absence ofa previousorthodontic treatment, the patient free fromsystemic
diseasesorcongenital malformationsanddevelopmentaldisordersandsyndromesand there is
no story of a previous surgery in the head and neck area
The sample was divided into groups according tosex andmandibularrotation(Anterior -
normal - Posterior). Then we studied variablesrepresentative the lower jaw rotation
andanother ones representativethemeasurementsof the chinsoft tissue.
The results showed a difference theaveragesof the soft tissue thickness and the
indicators of mandible rotation between the sexes In favor of males, And theaveragesof
thevariables showed Correlationbetween chinsofttissuethicknessin femaleswiththree
typesoflower jawrotation Compared with males.
