Morphometrical analyses of the skull in children with pozitional plagiocephaly

Abstract

Indroduction. Pozitional plagiocephaly (PP) is a type of cranial deformity caused by repeated external pressure on the head. Today is well known that this condition is not only cosmetic problem but have a higher risc of other medical problem too. Our privous study had shown a higher incidence of maloclussion among school children with cranial deformities. But anyway there are no detaled information about the situation of these condition in adult children. The aim of this study was to evaluate relation of PP with the maxillo-mandibular area, and the evolution PP in time. Matherial and method. Morphometric analysis of the base skull were peformed in children with cranial deformity, type PP. 10 patients with PP were included with right side location of PP. Children were devided in two groups acording to the age of patients. In first group were included 5 patients with avarage age 1 year, and in second group 5 patients with avarage age 10 years. The simmetry of each hemibase was determined by the crista galli–sella turcica–opisthion angle (CSO). The hemibases were symmetric if their angle was equal to 180º. The symmetry of the exobaze was determined by angles, traced from an anatomic median line to sella turcica and meatus (MSM) and from median line to sella turcica to temporo mandibular fosa (MStmF). The body lenth and ramus height of the mandibular were masured. Data were analyzed within each group and between each group. Results. There were no signicant asimmetry in the lenth of mandibular body and haight of of the mandibular ramus in both groups. All children with PP were determined with a deviation of the CSO angle to left side. The hemibaze was slightly asymmetric in first group, and significantly greater in adult children. The MSM and MStmF angels were greater in left side than in right side in both groups (MSM left and right side 115º-107º, MStmF left and right side 102º-98º). Conclusion. The PP has a huigher risc of deformation on the endobaze and exobaze that can lead to different type of maloclussion.