Narrowing of the inferior dental canal in relation to the lower third molars

Mahasantipya, P. M., Savage, N. W., Monsour, P. A. and Wilson, R. J. (2005) Narrowing of the inferior dental canal in relation to the lower third molars. Dentomaxillofacial Radiology, 34 3: 154-163. doi:10.1259/dmfr/31872903

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Author Mahasantipya, P. M.
Savage, N. W.
Monsour, P. A.
Wilson, R. J.
Title Narrowing of the inferior dental canal in relation to the lower third molars
Journal name Dentomaxillofacial Radiology   Check publisher's open access policy
ISSN 0250-832X
Publication date 2005-05
Sub-type Article (original research)
DOI 10.1259/dmfr/31872903
Open Access Status File (Author Post-print)
Volume 34
Issue 3
Start page 154
End page 163
Total pages 10
Editor S. L. Brooks
Place of publication UK
Publisher British Institute of Radiology
Collection year 2005
Language eng
Subject C1
320899 Dentistry not elsewhere classified
730112 Oro-dental and disorders
Abstract Objectives: To assess narrowing of the inferior dental canal in the lower third molar regions using computed tomography (CT) and to determine the value of radiographic markers on rotational panoramic radiographs in assessing the true relationships of the inferior dental canal. Methods: Patients referred for CT assessment of impacted lower third molars were used in this study. The lower third molars were assessed using CT to determine the position and morphology of the inferior dental canal relative to the roots and the cortical plates. The radiographic markers on rotational panoramic radiographs were correlated with the CT findings when rotational panoramic radiographs were available. Results: The patients referred had 202 lower third molars. Inferior positioning of the inferior dental canal was the most common location on CT. Narrowing of the inferior dental canal was found in relation to the lower third molars in 66.8% of cases. The chance of narrowing of the inferior dental canal as shown using CT increased when at least one of the radiographic markers, superimposition, narrowing, deviation or reduction in density was present on the rotational panoramic radiograph. Deviation of the inferior dental canal on rotational panoramic radiographs was found to be the most significant predictor of narrowing of the inferior dental canal and a close relationship to the roots, as shown in CT. Conclusions: Narrowing of the inferior dental canal is a common finding when impacted lower third molars are assessed using CT. On rotational panoramic radiographs deviation of the inferior dental canal is the best predictor of narrowing of the inferior dental canal and a close relationship to the roots.
Keyword Dentistry, Oral Surgery & Medicine
Radiology, Nuclear Medicine & Medical Imaging
Inferior Dental Canal
Computed Tomography
Rotational Panoramic Radiography
Narrowing
Alveolar Nerve
Surgery
Removal
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
2006 Higher Education Research Data Collection
School of Dentistry Publications
 
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Created: Wed, 15 Aug 2007, 05:42:14 EST