- Evaluate the relationship between teeth w/PA lesions or periodisease and sinus mucosal thickening via CBCT.
- N= 243 patients (485 sinuses)
- Exclusion criteria: Scans of patients w/traumatic injuries and sinuses associated w/implants or augmentation. Scans that did not allow for complete visualization of the maxillary sinus in both coronal and axial views were also excluded.
- Positive/negative control: 10 randomly selected scans were evaluated and measured twice by the radiographic investigator on 2 different days.
- Control & Design: CBCT scans from Jan 2012 – July 2012 in Mumbai, India obtained using i-CAT 3D Imaging System (Operating parameters – 5-7 mA, 80 kV, 8×8 cm field of view, 0.25mm voxel, 20 s scan time). Single evaluator assessed images. Data analyzed via Pearson chi-square test, and multivariate logistic regression analyses used to determine odds ratios. P<.05 for all analyses.
- Criteria of evaluation: Periapical lesions recorded when ≥ 1 Posterior Max tooth showed radiolucency. Sinus mucosa was either categorized as normal (≤2mm) or “thickened” (>2mm). Thickened mucosa further categorized as 2-5mm, 5-10mm, >10mm. Type of thickening categorized as “flat” or “polypoid.”
- 44.6% sinuses overall showed mucosal thickening >2mm
- Thicker mucosae were twice as frequent in males and older patients (>40yoa)
- “Flat” type of thickening (73.5%) seen in majority of thickened mucosae
- Over 80% of PA lesions in this study a/w sinus mucosal thickening
- Odds Ratio of 9.75 for mucosal thickening in presence of PA lesion
- Bivariate analysis w/perio disease significant, but multivariate not stat significant for thick mucosa
Collaboration between otolaryngologists and dentists can enable early diagnosis and treatment of OMS (Odontogenic maxillary sinusitis).
Periapical lesions can be associated w/sinus mucosal thickening (not causal though).