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Oral Radiology
Published in: Oral Radiology 1/2020

Open Access 01-01-2020 | Original Article

The mandibular plane: a stable reference to localize the mandibular foramen, even during growth

Authors: David Feuerstein, Leonor Costa-Mendes, Rémi Esclassan, Mathieu Marty, Frédéric Vaysse, Emmanuelle Noirrit

Published in: Oral Radiology | Issue 1/2020

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Abstract

Objectives

The location of the mandibular foramen is essential for the quality of the inferior alveolar nerve block anaesthesia and has often been studied with contradictory results over the years. The aim of this study was to locate the mandibular foramen, according to the dental age of the subject, through 3D analysis.

Methods

Three-dimensional images were reconstructed from mandibular computed tomography of 260 children, adolescents and adults. The occlusal plane was determined as the average plane passing through the buccal cusps of mandibular molars, premolars, and canines, and through the incisor edge. The mandibular foramen was located three dimensionally in relation to the anterior edge of the ramus (or coronoid notch), the sagittal plane and the occlusal plane.

Results

All along mandibular growth, the three distances defining the relative position of the mandibular foramen showed negligible changes. The mandibular foramen is located from − 0.4 to 2.9 mm above the occlusal plane. The distance between the mandibular foramen and the leading edge of the mandibular ramus ranged from 17 to 19.5 mm. The angle between the ramus and the sagittal plane ranged from 3° to 5.4°.

Conclusion

In our sample, and using the occlusal plane and the anterior edge of the ramus as anatomical references, the location of the mandibular foramen was considered to be similar in all patients regardless of age.
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Metadata
Title
The mandibular plane: a stable reference to localize the mandibular foramen, even during growth
Authors
David Feuerstein
Leonor Costa-Mendes
Rémi Esclassan
Mathieu Marty
Frédéric Vaysse
Emmanuelle Noirrit
Publication date
01-01-2020
Publisher
Springer Singapore
Published in
Oral Radiology / Issue 1/2020
Print ISSN: 0911-6028
Electronic ISSN: 1613-9674
DOI
https://doi.org/10.1007/s11282-019-00381-6

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