Prevalence of human herpesvirus in plasma and saliva of cirrhotic patients: A pilot study.

Aims: The objective of this study was to identify the presence of human herpesvirus (HHV) in the plasma and saliva of hepatic-cirrhosis patients and correlate it with clinical data and laboratory tests. This is a pilot, observational, and cross-sectional study.

Methods And Results: Specimens of plasma and saliva from 72 cirrhotic individuals were analyzed by means of polymerase chain reaction.

A retrospective analysis of oral and maxillofacial pathology in a pediatric population from Rio de Janeiro-Brazil over a 75-year period.

Background: The aim of this study was to analyze the distribution of oral and maxillofacial lesions affecting children and adolescents patients from a single oral pathology laboratory from Rio de Janeiro, Brazil.

Material And Methods: Oral and maxillofacial lesions biopsied in patients younger than 19-years were retrieved from the oral pathology files of the Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Rio de Janeiro over a 75-year period (1942-2017). The clinical data and the diagnoses of each case were included in a Microsoft Excel® database, being classified into 13 categories according to the etiology.

Primordial Odontogenic Tumor: Report of a New Case and Literature Review.

Primordial odontogenic tumor (POT) was recently recognized in the 2017 World Health Organization (WHO) Classification as a distinct mixed odontogenic tumor most commonly observed in the posterior mandible of young patients. POT appears as an expansile radiolucency associated to an unerupted tooth. The aim of the present study was to perform a retrospective microscopic evaluation of pediatric odontogenic tumors diagnosed in an Oral Pathology Laboratory from Rio de Janeiro-Brazil, in order to reclassify potential cases as POT.

Microcystic Calcifying Epithelial Odontogenic Tumor.

Microcystic variant of calcifying epithelial odontogenic tumor is rare. We herein describe an additional well-documented case of microcystic CEOT. The affected patient is a Guatemalan 42-year-old female with an expansile well-defined mixed radiolucent-radiopaque lesion located in the right posterior mandible.

Extraskeletal myxoid chondrosarcoma of the masticator space in a pediatric patient.

Extraskeletal myxoid chondrosarcoma (EMC) is a malignant soft-tissue neoplasm rarely described in the head and neck region of children and adolescents. We describe a case of EMC affecting the masticator space and a literature review. A 13-year-old boy who presented a large painless, diffuse mass causing progressive midfacial asymmetry of 6 months duration.

Displacement of the Mandibular Condyles Immediately after Herbst Appliance Insertion - 3D Assessment.

Objective: To test the following two hypotheses regarding the consequences of Herbst appliance (HA) insertion: 1) a significant clockwise mandibular rotation will occur and 2) the displacement of the condyles will follow the same magnitude of the changes of overjet (OJ) and overbite (OB).

Methods: Virtual 3D surface models of 25 patients were generated from cone-beam computed tomographs taken before treatment and immediately after HA insertion. Scans were registered on the cranial base and were analyzed using point-to-point measurements, color-coded maps, and semitransparent overlays.

Clinicopathologic and immunohistochemical features of five new cases of solitary fibrous tumor of the oral cavity.

Objective: To describe the clinicopathologic and immunohistochemical features of five cases of oral solitary fibrous tumor.

Study Design: Clinical data were collected from charts of two oral pathology laboratories of Latin America. All cases were evaluated by conventional hematoxylin and eosin staining and an extended immunohistochemical panel comprising vimentin, CD34, CD99, bcl-2, HHF-35, smooth muscle actin, calponin, S-100 protein, h-caldesmon, and Ki-67.

Malignant peripheral nerve sheath tumor of the lower labial mucosa: case report and literature review.

Malignant peripheral nerve sheath tumor (MPNST) is an uncommon soft tissue sarcoma with a predilection for the extremities and trunk of adults, rarely occurring in the oral cavity. To date, 10 cases of MPNSTs affecting the lower labial mucosa have been reported in the English language literature. We describe an additional case of MPNST in the lower labial mucosa of a 67-year-old male patient, who exhibited a painful swelling with a history of 4 months of evolution.

Clinicopathological characteristics of tumours of the intraoral minor salivary glands in 170 Brazilian patients.

Tumours of the minor salivary glands are relatively uncommon, and publications from around the world normally include tumours of both the minor and major salivary glands, making it difficult to assess their prevalence and distribution. Our aim was to evaluate retrospectively the clinicopathological features of a series of tumours of the intraoral minor salivary glands from two universities in Rio de Janeiro, Brazil, and to compare the data with those from other epidemiological studies. A total of 170 such tumours were diagnosed from 1942 to 2012, and were selected from two university departments of oral pathology.

NFκB mediates cisplatin resistance through histone modifications in head and neck squamous cell carcinoma (HNSCC).

Cisplatin-based chemotherapy is the standard treatment of choice for head and neck squamous cell carcinoma (HNSCC). The efficiency of platinum-based therapies is directly influenced by the development of tumor resistance. Multiple signaling pathways have been linked to tumor resistance, including activation of nuclear factor kappa B (NFκB).

Bilateral connation of permanent mandibular incisors: a case report.

Connated teeth are the consequences of developmental anomalies leading to the eruption of joined elements. According to current definitions, gemination occurs when one tooth bud tries to divide, while fusion occurs if two buds unite. Clinical experience shows, however, that diagnosis can be complicated due to superimposed anomalies.

Color stability of fluoride-containing restorative materials.

Six fluoride-releasing materials of shade A3 were tested: one glass ionomer (Fuji IX), one resin-modified glass ionomer (Photac-Fil), two compomers (F 2000 and Dyract AP) and two composites (Tetric Ceram and Solitaire). Disk-shaped specimens of each material were prepared according to manufacturer's instructions, polished and L*a*b* baseline measurements taken. Specimens were randomly divided into two groups and given four different treatments of UV light exposure and immersion in a staining solution.

Gingival status of HIV+ children and the correlation with caries incidence and immunologic profile.

Purpose: The aim of this study was to determine gingival health and caries levels in HIV-infected children.

Methods: The modified gingival index (GI) of 43 HIV+ children of both sexes, aged between 2 and 12 years, was measured and correlated with the DMFT/dmf. The children's immunodeficiency level was also established by means of the CD4:CD8 ratio.