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The International Journal of Oral & Maxillofacial Implants
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Int J Oral Maxillofac Implants 29 (2014), No. 6     19. Dec. 2014
Int J Oral Maxillofac Implants 29 (2014), No. 6  (19.12.2014)

Page 1301-1314, doi:10.11607/jomi.3644, PubMed:25397794


Incidence of Anatomical Variations and Disease of the Maxillary Sinuses as Identified by Cone Beam Computed Tomography: A Systematic Review
Vogiatzi, Theodosia / Kloukos, Dimitrios / Scarfe, William C. / Bornstein, Michael M.
Purpose: To analyze available evidence on the incidence of anatomical variations or disease of the maxillary sinuses as identified by cone beam computed tomography (CBCT) in dentistry.
Materials and Methods: A focused question was developed to search the electronic databases MEDLINE, EMBASE, the Cochrane Oral Health Group Trials Register, and CENTRAL and identify all relevant papers published between 1980 and January 19, 2013. Unpublished literature at ClinicalTrials.gov, in the National Research Register, and in the Pro-Quest Dissertation Abstracts and Thesis database was also included. Studies were included irrespective of language. These results were supplemented by hand and gray literature searches.
Results: Twenty-two studies were identified. Twenty were retrospective cohort studies, one was a prospective cohort study, and one was a case control study. The main indication for CBCT was dental implant treatment planning, and the majority of studies used a small field of view for imaging. The most common anatomical variations included increased thickness of the sinus membrane, the presence of sinus septa, and pneumatization. Reported sinus disease frequency varied widely, ranging from 14.3% to 82%. There was a wide range in the reported prevalence of mucosal thickening related to apical pathology, the degree of lumenal opacification, features of sinusitis, and the presence of retention cysts and polyps. More pathologic findings in the maxillary sinus were reported in men than in women, and the medial wall and sinus floor were most frequently affected.
Conclusion: CBCT is used primarily to evaluate bony anatomy and to screen for overt pathology of the maxillary sinuses prior to dental implant treatment. Differences in the classification of mucosal findings are problematic in the consistent and valid assessment of health and disease of the maxillary sinus.

Keywords: cone beam computed tomography, dental implants, maxillary sinus, mucosal thickness, sinus floor elevation, sinus membrane