A research report submitted to the Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, in partial fulfillment of the requirements for the degree of Masters of Science in Dentistry.
Johannesburg, 2017 / The objective of the study was to determine the exact location of the mandibular foramen among black South African population using a possible correlation of radiographic and morphometric analysis. Sexual dimorphism in the position of the foramen was taken into consideration. This study was conducted on a total of 253 adult dry human mandible specimens and 24 adult radiographic data from the cone beam computed tomographic records of patients. Both male and female specimens of ages between 16-56 years old and above were examined for morphometric analysis. The age group for the radiographic analysis was between 21-25 years old. The length, height and distance of the mandibular foramen in relation to the anterior and posterior border of the ramus of the mandible; superior and inferior border of the mandible as well as the distance in relation to the coronoid & condyle were measured. All the measurements were taken using a mandibulometer and the Dental sliding digital callipers for the morphometric analysis. For both radiographic and morphometric analyses, the distance of the mandibular foramen (MF) to the posterior region of ramus was smaller than that of MF to anterior region. The same pattern of results were observed for both males and females in all age groups. Males generally showed greater readings than females in all parameters, except the MF-P measurement. The MF was situated more towards the superior part of the mandible in the morphometric study. In the radiographic study, the MF was situated more towards the inferior part of the mandible. No significant difference was noted amongst different age groups.
With regards to the antero-posterior dimensions of the mandible, the MF was found to be situated more towards the posterior region of the ramus for both radiographic and morphometric analyses in all age cohorts. With regards to infero-superior dimensions of the mandible, the MF was situated more towards the superior part of mandible in the
morphometric analysis, but more towards the inferior part of the mandible in the radiographic analysis. In conclusion, the position of the MF was constant with regards to the antero-posterior dimensions for both radiographic and morphometric analyses. Therefore, this suggests that the chances of finding the MF in the anterior border of ramus of mandible are limited hence the anterior border can be regarded as the “safety zone” in a South African population. / MT2017
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/23310 |
| Date | January 2017 |
| Creators | Tshite, Koketso |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | application/pdf |
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