Abstract
This cross-sectional study evaluated the influence of prevalence, laterality and diameter
of persistent foramen tympanicum (PFT) in cone beam computed tomographic (CBCT) scans
of adult patients with different sagittal skeletal patterns, sex and age. CBCT of
510 patients were assessed for the presence of PFT. Skeletal pattern, age and sex
of the affected patients were recorded, as well as laterality and diameter of PFT.
Differences were tested using the one-way ANOVA, chi squared and paired-t tests, at α=5%. A total of 49 (9.7%) patients presented with PFT; 36 (73.5%) were
women (p<0.01) aging from 31-50 years (p>0.05), with Class III skeletal pattern (p>0.05).
The unilateral/bilateral ratio was 3.9:1 (p<0.01). No correlation was found between
the PFT diameters with sex and age, but differences were found between the classes,
with the largest diameters in Class II individuals (p=0.046). The prevalence of PFT
in CBCT scans was 9.7%, with women being more affected, with unilateral defects in
most cases. Skeletal patterns did not have significant effects on PFT prevalence,
although PFT diameter varied among classes, with higher measures in Class II individuals.
Keywords
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Article info
Publication history
Published online: June 17, 2020
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© 2020 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.
