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Context:Maxillary sinusitis is an important issue in dentistry and maxillofacial surgery. This study aims to present a systematic review of etiologies and treatments of odontogenic maxillary sinusitis.Evidence Acquisition:An electronic database search was performed based on related MeSH keywords. Articles published between January 2001 and December 2014 was selected according to the inclusion criteria. The information extracted from various studies was categorized in various tables.Results:The study selected 19 studies. In most studies, oroantral fistula (OAF) was the most common etiology of odontogenic sinusitis. Alpha-hemolytic streptococcus was the most common flora in sinusitis with dental origin. The literature shows that the Caldwell-Luc approach may be the best method for treating sinusitis in cases of displaced teeth.Conclusions:OAF is a common cause of odontogenic maxillary sinusitis and may easily be treated by endoscopy and fistula closure. Maxillofacial surgeons and dentists should consider this problem to avoid misdiagnosis and prevent complications.

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Temporomandibular joint (TMJ) involvement in rheumatoid arthritis (RA) patients has been described in the literature; however, its incidence varies greatly. The current study aimed to determine the prevalence and clinical characteristics of TMJ involvement in RA patients. This cross-sectional study consisted of 60 individuals with RA. The patients were assigned to two groups, those with TMJ involvement and those without TMJ involvement. TMJ involvement was defined based on the findings of questionnaires and clinical examinations by a rheumatologist. The symptoms and signs were recorded by a single trained dentist. The mean age of patients was 43.9 ± 15.52 years (range: 21-78 years), and the majority of the participants were women (n = 49, 81.66%). Thirty-five patients (58.3%) had clinical evidence of TMJ involvement. The levels of C-reactive protein (CRP) (P value= 0.01) and rheumatoid factor (RF) (P value = 0.02) were found to be correlated with TMJ involvement (). There was no significant correlation between TMJ involvement and erythrocyte sedimentation rate (ESR), age, gender, treatment duration, or disease duration. This study showed a high level of CRP in RA patients with TMJ involvement. The results further showed a significant correlation between TMJ involvement and RF. TMJ pain was reported in almost half of the RA patients.

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