sup], Furthermore, the aspect ratio of the images obtained by CBCT was 1:1, [sup] and these images could be saved so that repeated measurements were possible, which enabled successive section measurement and analysis of alveolar mucosa thickness in edentulous patients.
We instructed patients to wear the record base that separated the soft tissue of the lips, cheeks, and tongue away from the surface of alveolar mucosa in the mouth, and ensured that the patients relaxed the facial musculature and tongue while bringing the jaw into a rest position.
sup],, In the present study, we developed a method to obtain the CBCT images of the buccolingual section of different regions in the mandibular alveolar ridge, performed successive section measurement analyses, and investigated the thickness distribution of alveolar mucosa in edentulous patients, which may help to relieve the areas of the custom tray or denture base corresponding to thinner mucous and reducing the risk of denture-induced irritations.
However, the density of the alveolar mucosa and the soft tissues surrounding it, such as tongue and buccal mucosa, is so similar that the boundaries between them are difficult to distinguish.
Therefore, by separating the soft tissue of the lips, cheeks, and tongue away from the surface of the alveolar mucosa with the record base, the boundaries between the alveolar mucosa and the record base in the CBCT images can be easily identified.
18 Present study supports these findings because majority of our cases had lesion on the buccal mucosa followed by lower alveolar mucosa.
An association between gender and site is also seen in our study with more males afflicted with cancer of the buccal mucosa, dorsal surface of the tongue, lower alveolar mucosa and floor of the mouth, whereas carcinomas of the hard palate and upper alveolar mucosa occur mostly in females.
The common sites for minor salivary gland tumors were hard palate, buccal mucosa, lips, alveolar mucosa, soft palate and retro- molar region in descending order.
The retromolar region was affected in 2 cases, soft palate and alveolar mucosa each involved in 1.