A Computed Tomographic Study Of Craniofacial Asymmetry Among Selected Age Groups Of Malay Patients In Hospital Univ~Rsiti Sains Malaysia
| dc.contributor.author | ABU JAROUR, AOUS AHMAD SALEM | |
| dc.date.accessioned | 2016-07-20T02:03:16Z | |
| dc.date.available | 2016-07-20T02:03:16Z | |
| dc.date.issued | 2007-07 | |
| dc.description.abstract | The objectives of the present study were to determine and compare the presence of craniofacial asymmetry during development across different age groups and to compare the craniofacial asymmetry between males and females]. The hypothesis that there was presence of craniofacial symmetry before the establishment of deciduous dentition was also tested. The three dimensional-computed tomography (3D-CT) data were collected retrospectively from the database at Hospital Universiti Sains Malaysia (HUSM). It consisted of 80 Malay subjects who were patients of the hospital aged 1 day to 25 years. Subjects with craniofacial deformities were excluded. The sample was divided into three groups, 1 day to 6 months age group; 7 months to 17 years age group and 18 years to 25 years age group. For 1 day to 6 months age group, 12 males and 8 females were included. For 7 months to 17 years age group, 24 males and 16 females were included. For 18 years to 25 years age group, 10 males and 10 females were included. For each skull thirteen linear measurements based on orthodontic cephalometric landmarks were obtained for each side from the 3D-CT reformatted images using a 3D visualization and analyzing software. Means were obtained for each linear measurement. The left-side means were subtracted from the right-side means. The differences between means were converted into a percentage asymmetry index. Comparisons were made by Two-way analysis of variance. The results showed that craniofacial asymmetry was found throughout the whole sample. The craniofacial asymmetry was determined and compared during development across the 1 day to 6 months age group; 7 months to 17 years age group and 18 years to 25 years age group. All age groups demonstrated near similar de@rees of craniofacial asymmetry. For the measurements Or-ZMI (distance between the Inferior Orbitale to the Zygomaxillare Inferius), IOF-ANS (distance between the Infra Orbital Foramen and the Anterior Nasal Spine) and Au-Zt (distance between the Auriculare and the Zygotemporale) the degrees of craniofacial 'asymmetry were significantly different among the age groups. The 1 day to 6 months age group presented with the largest degree of asymmetry, followed by 7 months to 17 years age group and 18 years to 25 years age group. The craniofacial asymmetry was determined and compared between the males and females. Both males and females demonstrated near similar degrees of craniofacial asymmetry, however, for the measurement Go-Me (distance between the Gonion and the Menton) the degree of craniofacial asymmetry was significantly different between males and females, with females presenting a larger degree of asymmetry. For the measurement ZMI-Pr (distance between the Zygomaxillare Inferius' and the Prosthion) the degree of asymmetry was significantly different between males and females, with males presenting a larger degree of asymmetry. The presence of craniofacial asymmetry in the 1 day to 6 months age group indicated that eruption of the deciduous dentition could not be associated with the onset of craniofacial asymmetry development. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/2291 | |
| dc.subject | A Computed Tomographic Study Of Craniofacial Asymmetry Among Selected Age | en_US |
| dc.subject | Groups Of Malay Patients In Hospital Universiti Sains Malaysia | en_US |
| dc.title | A Computed Tomographic Study Of Craniofacial Asymmetry Among Selected Age Groups Of Malay Patients In Hospital Univ~Rsiti Sains Malaysia | en_US |
| dc.type | Thesis | en_US |