Browsing by Author "Parker, Mohamed Ebrahim"

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    Analysis of the occurrence of taurodontism in patients attending the Tygerberg Oral Health Centre
    (University of the Western Cape, 2015) Benzahya, Mohamed; Parker, Mohamed Ebrahim
    Aim: Analysis of the occurrence of taurodont molars among patients attending the Tygerberg Oral Health Centre. Methodology: A retrospective descriptive study comprising 1608 panoramic radiographs of patient records, 815 females and 793 males, ranging in ages from 18 to 68 years old. The panoramic radiographs were evaluated for presence of taurodontism. Gender predilection and location of taurodont molars were analysed using a chi-square test. Results: Taurodontism was found in 52 (3.23%) radiographs distributed according to gender (30 females and 22 males [P > 0.05]). The overall prevalence of taurodont molars was (0.73%) from a total of 17148 molars that were examined. The mandibular molar teeth were more affected than the maxillary molar teeth and the second mandibular tooth was the most affected. Conclusion: Taurodontism was not uncommon in a group of patients that attended the Tygerberg Oral Health Centre, UWC. Further larger scale studies are required to assess its distribution in the general population of South Africa to compare it with other ethnic groups and to establish any associations. However, taurodontism in mandibular teeth is a condition that should be taken into consideration, especially the second mandibular tooth, to avoid complications.
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    Custom focal trough in cone-beam computed tomography reformatted panoramic versus digital panoramic for mental foramen position to aid implant planning
    (Wolters Kluwer Health, 2020) Beshtawi, Khaled; Qirresh, Emad; Parker, Mohamed Ebrahim
    To compare the linear measurements from digital panoramic (DP) radiographs and cone-beam computed tomography (CBCT) volumes for the localization of the mental foramen (MF). Material and Methods: Thirty-one patients with panoramic and CBCT radiographs depicted on the same machine were analyzed. The vertical and horizontal positions of the MF were compared by the differences in distances measured from reference points to the boundaries (tangents) of the MF in digital panoramic (DP) and CBCT reformatted panoramic (CRP) views. The vertical position of MF was also analyzed on CBCT oblique coronal views (CORO) and compared with its corresponding distances on DP and CRP views. Results: Statistically significant differences (P < 0.05) were found in all compared measurements between CRP and DP views.
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    Reliability of panoramic radiographs to determine the vertical position of the impacted third molar root tip from the inferior alveolar canal
    (2013) Fauzi, Azizah Ahmad; Parker, Mohamed Ebrahim; Norval, E J
    Nowadays, the availability of radiographic modalities from conventional radiography to more advanced approaches such as medical computed tomography as well as cone beam computed tomography have been useful in providing insights of relevant anatomy prior to surgical procedures. The increased popularity of cone beam computed tomography has prompted interest in the utility of this approach for diagnostic application in dentistry, including the assessment of the proximity of impacted mandibular third molars to the inferior alveolar canal. It is important to understand the reliability of conventional panoramic radiograph in the assessment of this criterion since it is more commonly used as first line radiographic approach due to its availability and lower radiation dose. This study is aimed to investigate the reliability of conventional panoramic radiograph in the evaluation of the proximity of impacted mandibular third molar root tip to the inferior alveolar canal by correlating the results with cone beam computed tomography. A retrospective study of forty nine patients who underwent panoramic radiography as well as cone beam computed tomography for examination of impacted mandibular third molars was conducted. Two observers were participated in all image evaluation. In this study, both observers recorded statistically significant differences in the measurement of the apices of vertically impacted third molars and the inferior alveolar canal from panoramic radiographs and cone beam computed tomography images. The low reliability of panoramic radiograph to assess the vertical proximity between these two anatomical structures suggests the importance of additional assessment with cone beam computed tomography in cases where panoramic radiograph shows superimposition of the third molar root on the roof of the canal, presence of root below the roof of the canal and presence of bone height of less than one millimetre separating the third molar from the inferior alveolar canal.
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    A retrospective analysis of the non-odontogenic malignancies of the jaws using panoramic radiography
    (2013) Yakoob, Zarah; Parker, Mohamed Ebrahim
    Aim: The aim of this study was to report on the frequency of and radiographic features of non-odontogenic malignancies of the jaws as seen on panoramic images, stored in the radiological achieves over an eleven year period.