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The aim of the present study was to analyze the epidemiology of maxillofacial odontogenic and non-odontogenic cysts diagnosed for 30 years in a Brazilian population. A retrospective descriptive cross-sectional study was performed. Biopsy records were ob tained from the archives of a Brazilian referral center between 1989 and 2019. Data regarding age, gender, anatomical location, and histopathological diagnosis were collected and categorized. Further, a literature search for similar studies was performed. A total of 6.994 biopsy records were evaluated, but only 367 (5.24%) cases were classified as odontogenic cysts (OC) or non-odontogenic cysts (NOC). Among all cystic lesions, 341 cases (92.9%) were OC and 26 cases (7.1%) were NOC. These lesions were more common in females (n = 208 / 56.67%) and located mostly in the mandible (n = 195 / 53.1%). In patients with OC, the radicular cyst was the most frequent (n = 134 / 36.5%), followed by the dentigerous cyst (n = 101 / 27.5%) and the odontogenic keratocyst (n = 52 / 14.2%). Patients with NOC had a higher frequency of epidermoid cyst (n = 12 / 3.3%), oral lymphoepithelial cyst (n = 7 / 1.9%), and nasopalatine duct cyst (n = 4 / 1.1%). The OCs were more prevalent than NOCs, and inflammatory cysts were the most common among all the OCs.

Introdução: A transmissão SARS-CoV-2 de humano para humano pode ocorrer e o risco de propagação no ar durante os procedimentos odontológicos geradores de aerossóis permanece uma preocupação. Acredita-se que um enxaguatório bucal antimicrobiano pré-operacional reduza o número de micróbios orais. No entanto, a eficácia do enxaguatório bucal pré-procedimento na redução do número de microrganismos disseminados por meio do aerossol gerado por procedimentos odontológicos ainda não está clara. Objetivo: avaliar através de uma revisão de literatura o uso de enxaguantes bucais na redução da carga viral do SARS-CoV-2. Materiais e Método: O levantamento literário para esta pesquisa foi realizado no período de dezembro de 2019 a 10 de agosto de 2020 nas bases de dados Scielo e Medline/PubMed. Na estratégia de busca, foram utilizadas as palavras “SARS-CoV-2”, “2019-nCoV”, “COVID-19”, “Dentistry”, “Odontologia”, “Odontología”, “Mouthwashes”, “Antissépticos Bucais” e “Antisépticos Bucales”.  Resultados: Uma busca sistematizada foi realizada, foram encontrados 661 artigos, após a realização da leitura criteriosa dos artigos completos foram selecionados 42 artigos. 88% dos estudos indicavam o uso de Peróxido de hidrogênio a 1%, 76% indicavam Povidine 0,2% e apenas 19% o uso da Clorexidina a 0,12%. Conclusão: Os estudos presentes na literatura apresentam divergências nas indicações e porcentagens dos enxaguantes indicados. Os protocolos clínicos devem ser avaliados para reduzir o risco de transmissão e proteger pacientes e profissionais.Descritores: Infecções por Coronavírus; Betacoronavirus; Odontologia; Antissépticos Bucais.ReferênciasGe ZY, Yang LM, Xia JJ, Fu XH, Zhang YZ. Possible aerosol transmission of COVID-19 and special precautions in dentistry. 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Introduction Actinic cheilitis is a inflammatory condition affecting mainly the lower lip and it is caused by chronic and excessive exposure of the lips to the ultraviolet radiation in sunlight. Objective Identifying clinical and histopathologic characteristics in 40 cases histopathologically diagnosed as actinic cheilitis. In addition, to investigate possible associations between these aspects. Method Defined as an observational, transversal, retrospective and descriptive study, it registered data regarding age, gender, occupation, symptomatology, records of sun exposure, frequency of sunblock use, tabagism, skin color, clinical aspect and histopathological classification. The data was submitted to the chi square test of Pearson (p<0.05). Result There was a predominance of male gender, leucodermia, and ages ranging between 50 and 60 years. The most common occupation was farming. From our sample, 85% had history of chronic sun exposure, in which 50% reported the use of some type of sunblock and only 25% were smokers. The main clinical condition was non-ulcerated leukoplakia and in the histopathological study, the hyperkeratosis were more common. A correlation between the degree of tissue alteration verified in the histopathological diagnosis and the studied clinical variables was not established (p=0.112). Conclusion The clinical aspect of the wound can conceal tissue alterations in different stages, emphasizing the importance of a premature diagnosis.