Introduction and objective: The aim of this review is to evaluate to what extent sinus pathology originates from dental pathology or treatment, and to assess the occurrence frequency of sinus pathology in its different forms using cone beam computed tomography (CBCT). Method: The literature review was conducted using PubMed, Scopus and the Cochrane Library. Forty-two articles were included (25 case series, ten cross- sectional studies, three case-control studies, two cohort studies, one prospective study, and one retrospective study). Results: Forty-two articles involving a total of 13,191 patients and 17,374 CBCTs were included in this review. The most frequent pathological findings were, by a considerable degree, inflammatory diseases, which represented 75.16% of the total findings, followed by infection (12.13%), tumours (6.88%), and high pneumatisation (2.07%). Within dental pathology, there is a direct Pearson correlation with polyps (1) and opacification (0.999), and an almost direct correlation with retention cysts (0.981) and sinus-associated dental elements (0.972). Conclusions: Our results further support the argument that dental modifications and treatments are an important cause of sinus pathology. For this reason, dental aetiologies must be taken into account by both dentists, maxillofacial surgeons and ENT when considering the most appropriate treatment for patients with maxillary sinusitis.
The main objective of this systematic review was to evaluate the microbiology of maxillary sinus infections and to determine whether an odontogenic origin of the infection can be established. The PIE question posed was the following: In patients with sinus and dental symptomatology who come for ENT or dental assessment and who undergo a microbiological study of the maxillary sinus and are found to have infectious sinus pathology, is the infectious sinus pathology related to an odontogenic origin? The literature review was carried out in PubMed, Web of Science, and the Cochrane Library. A total of 2769 articles were identified in the three databases used. Inclusion and exclusion criteria were applied, and after eliminating duplicates, 55 full-text publications were identified as suitable for inclusion. After reading this series of publications, four articles were excluded due to lack of data in the article. Finally, 51 studies were included in the qualitative analysis. In this study, the microorganisms were classified into three groups: group 1 (microorganisms of the oral microbiome related in the literature to oral pathology, namely caries and periodontal disease), group 2 (microorganisms found in the oral microbiome but not related to oral disease), and group 3 (microorganisms not identified in the microbiome). This review included 51 articles and a total of 6415 patients who underwent surgery in 7051 sinuses. Most sinus infections were caused by group 2 (63.51%) or group 1 (24.21%) bacteria. Within group 1, the most frequent bacteriological agents in sinus infections were Peptostreptococcus spp. (35.22%) and St. Viridans spp. (39.89%). In group 2, the most frequent bacteriological agents in sinus infections were H. influenzae (29%) and Streptococcus spp. (23.63%). In group 3, the most frequent cause of sinusitis of dental origin was dental caries, followed by foreign bodies (implants) and sinus elevation. Different studies have shown that certain species of bacteria isolated from maxillary sinus cultures are more frequently associated with rhinosinusitis of odontogenic origin. The results of this systemic review show that, among the bacterial species most frequently found, anaerobic species predominate over aerobic species, especially Peptostreptococcus and Staphylococcus aureus, which are part of the oral microbiome, suggesting an odontogenic origin of maxillary sinus infection. Therefore, bacterial cultures of maxillary sinus aspirate can be of great use to clinicians in the differential diagnosis of odontogenic sinusitis.
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