Abstract
The purpose of this study was to assess the anatomy of antroliths and its influence
on the thickness of the maxillary sinus membrane. Cone beam computed tomography (CBCT)
was performed on 239 patients (478 sinuses). The prevalence of antroliths per sinus
was 8.4%. Regarding their distribution, antroliths were predominantly unilateral (82.5%),
single (67.5%), and in a dentate area (60.0%). The antroliths were mainly located
in the molar region (95.0%) and in the sinus floor (77.5%). The measured dimensions
of the antroliths were as follows: length 5.6 ± 4.4 mm, width 4.1 ± 2.9 mm, height 3.5 ± 2.1 mm. The relationships between the antroliths and the sinus membrane (type 1, 34.1%;
type 2, 52.3%; type 3, 13.6%) indicated that sinus membranes tended to encircle antroliths,
which resulted in a gradual increase in membrane thickness. The sinus membrane was
found to be significantly thicker in the presence of antrolith(s) (P < 0.001). Antroliths which are sufficiently large or are located adjacent to the sinus
floor or lateral wall increase the risk of sinus membrane perforation during sinus
augmentation procedures. Therefore, a thorough CBCT evaluation is needed to minimize
the risk of complications prior to sinus augmentation procedures.
Key words
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Article info
Publication history
Published online: January 08, 2021
Accepted:
December 17,
2020
Identification
Copyright
© 2020 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.
