The rate of colonization by yeasts in PCRFH was high, and there was variability in species distribution and antifungal susceptibility profile. These results are little known in this group of patients and are important for controlling the risk of developing invasive fungal infections.

The objective of this study was to investigate tongue coating (TC) frequency and its colonization by yeasts in a group of chronic kidney disease (CKD) patients. Clinical examination of the oral mucosa of 33 CKD patients was performed to investigate oral and tongue lesions. TC was diagnosed according to its clinical characteristics. Stimulated saliva and TC samples were collected to verify the salivary flow, and determine yeast frequency, species and counts. TC was found in 18/33 of the patients (54.55 %) and was the most frequent oral lesion found. Of 18 patients with TC, 13 (72.22 %) presented positive cultures for yeasts on the tongue dorsum, and one (5.55 %) in the saliva only. Yeasts were significantly more frequent in the tongue dorsum when compared to the saliva (p = 0.0106). The most frequent yeast species found was C. albicans (55.55 %), while C. parapsilosis comprised 50 % of non-albicans Candida species. This study demonstrated high amounts of yeasts on the cultures from TC samples of CKD patients, strongly suggesting that TC is a clinical representation of a polymicrobial biofilm, which could serve as a gateway for disseminated infection in immunosuppressed patients undergoing frequent hospitalization.

No abstract

Objetivo: o objetivo do presente trabalho é relatar dois casos clínicos de pacientes com displasia cemento--óssea florida (DCOF) com características distintas no exame de tomografia computadorizada de feixe cônico (TCFC). IntroduçãoA displasia cemento-óssea florida (DCOF) consiste em uma lesão fibro-óssea benigna não neoplá-sica dos maxilares 1-2 em que o osso é substituído por um tecido fibroso semelhante ao cemento 3 , a qual pode ocorrer em áreas dentadas ou não [4][5][6] . Dentes associados à DCOF não são deslocados, não apresentam reabsorção radicular ou alterações em vitalidade pulpar 6 . A etiologia dessa patologia é desconhecida e apresenta-se totalmente assintomáti-ca 1-2,6-7 e, em muitos casos, as lesões são detectadas em uma radiografia tomada para outros fins [3][4][5][7][8][9][10] . Tal doença possui maior expressão no gênero feminino, em pacientes melanodermas de meia idade [2][3][4][5][6][7][8]10 . Microscopicamente, essas lesões são compostas de trabéculas ósseas anastomosadas e camadas de calcificações cementoides embutidas em um tecido fibroblástico 7,9 . Nos exames radiográficos, a DCOF tem um amplo espectro de apresentações, no qual as lesões variam de totalmente radiolúcidas (fase osteolítica, na qual o tecido ósseo normal é substituído por um tecido fibroso com fibras colágenas e distribuição aleatória de células) 6 , mistas a radiopacas, quando há formação de aglomerados irregulares de tecido mineralizado e um aumento de tamanho nas trabéculas ósseas 6,10 , tendendo para a simetria, com localização bilateral, sendo mais comuns na mandíbula do que na maxila 5 . As lesões podem promover expansão das corticais ósseas e, normalmente, apresentam uma relação familiar 3,[6][7] . A DCOF pode se assemelhar a lesões como a osteomielite crônica esclerosante difusa (OCED),

The aim of this work was to report biosecurity measures in the Oral and Maxillofacial Radiology (OMR) clinic in the current context of COVID-19, based on a literature review. An electronic search for scientific papers was performed using PubMed, Embase, Web of Science, and Scopus database. Although the literature related to care in the OMR clinic regarding COVID-19 is still scarce, this unprecedented scenario created by the pandemic generated an urgent need for measures to prevent the transmission of the virus. Dentists are at maximum risk of contagion and, although the practice of OMR generally does not produce aerosols, radiologists and technicians are continually in contact with body fluids, such as saliva. In addition, imaging exams are often indispensable for emergency or elective dental diagnosis and treatment. Training in infection control practices during major outbreaks of infectious diseases should be quickly reinforced and dental settings have unique characteristics that warrant specific infection control considerations. Some recommendations have been proposed and were discussed, which cover patient flow, equipment handling and environment, radiographic technique and processing, personal protective equipment and preparation and issuance of radiological reports and access to exam results. Due to the COVID-19 pandemic, biosecurity measures in the routine of the OMR clinic are indispensable to enable emergency dental care and the perspectives of returning to elective treatment. Biosecurity measures and staff training at the OMR clinic should be instituted immediately, since imaging exams are an important and often indispensable part of dental diagnosis and treatment.