Abstract
Statement of problem
Knowledge about the location and dimensions of the mental foramen is important for
surgical planning and implant placement in the posterior mandibular region.
Purpose
The purpose of this clinical study was to assess the location and dimensions of the
mental foramen in individuals of different facial type, skeletal class, and sex by
means of cone beam computed tomography (CBCT) images.
Material and methods
CBCT images of 142 individuals (72 women and 70 men) were classified according to
the facial type (dolichocephalic, mesocephalic, or brachycephalic) and skeletal class
(I, II, or III). The vertical and horizontal locations of each mental foramen were
evaluated on panoramic reconstructions, and the greatest height and width of the mental
foramen were determined on multiplanar reconstructions. Also, the distances from the
mental foramen to the alveolar crest and to the inferior cortex of the mandible were
obtained. The data were compared by using the Kruskal-Wallis test and multiway analysis
of variance (α=.05).
Results
The facial type, skeletal class, and sex did not influence the vertical (P=1.00) or the horizontal (P>.15) location of the mental foramen. The most frequent location of the mental foramen
was between the first and second premolars and below their apices. The dimensions
of the mental foramen were not influenced by the studied factors in men (P>.07); conversely, the mental foramen dimensions were influenced for women (P<.03).
Conclusions
The most frequent location of the mental foramen was between the first and second
premolars and below their apices. An influence of the facial type and skeletal class
was observed on the dimensions of the mental foramen in women.
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Article info
Publication history
Published online: August 13, 2021
Publication stage
In Press Corrected ProofFootnotes
Supported in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Brazil, (CAPES) Finance Code 001 and by the Brazilian National Council for Scientific and Technological Development (CNPq).
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© 2021 by the Editorial Council for the Journal of Prosthetic Dentistry.
