Background: The aim of this study was to investigate, in vivo, the quality of bone healing under the effect of a static magnetic field, arranged inside the body.

The aim of the present study was to determine the role of vascular endothelial growth factor receptors (VEGFR1 and VEGFR2) in lip carcinogenesis, to investigate correlations between these markers with microvessel density (MVD) and clinicopathological aspects. Medical records from 27 cases of actinic cheilitis (AC) and 46 cases of lower lip squamous cell carcinoma (LLSCC) were analysed and submitted to immunohistochemistry. VEGFR1- and VEGFR2-immunostained sections were analysed based on percentage of positive epithelial and inflammatory cells, while CD31 was submitted to quantitative analysis to determine MVD. Different patterns of VGFR1 and VEGFR2 expression were observed between AC and LLSCC. VEGFR1 expression in epithelial and inflammatory cells and VEGFR2 expression in epithelial cells were higher in AC compared to LLSCC (p < 0.05). VEGFR1 expression in epithelial cells was higher in LLSCC compared to AC (p < 0.001). Expression of both receptors was not associated to MVD or clinicopathological aspects. A direct correlation was found between epithelial VEGFR1 and VEGFR2 expression (p = 0.02) and between VEGFR2 epithelial and inflammatory expression (p < 0.001). Our findings indicate that activation of VEGFR1 and VEGFR2 in epithelial and inflammatory cells appears to be an early event in lip carcinogenesis.

No abstract

Background:In dentistry, one of the most common surgical procedures is the removal of retained third molars. This surgery generates great morbidity to the participants for causing pain, edema, and trismus due to surgical trauma. The objective of the present study is to evaluate the efficacy of photobiomodulation with light emitting diode (LED) in the control of pain, facial edema, trismus, and quality of life resulting from the extraction of retained lower third molars.Methods:A randomized, double-blind, placebo-controlled clinical trial involving 38 adult participants, who meet the criteria of eligibility and agree to participate in the study. Before the surgeries are performed, the facial and mouth opening measures of all the participants will be taken. Immediately after the surgeries, participants will be randomized into 2 groups. In the LED group, participants will receive LED applications (intra oral with 660 nm, 12J and extraoral with 850 nm, 108J) in the immediate postoperative, first and second days after the surgical procedure. In the control group, the participants will be attended in the same way as in the LED group, however, the person in charge of the application will simulate the irradiation. Pain (EVA and NRS-101), postoperative edema, trismus, temperature, dysphagia, and hematoma will be evaluated after 1, 2, 5, and 7 days. The oral health impact profile (OHIP-14 Questionnaire) and anxiety analysis (Beck anxiety inventory -BAI) questionnaires will be applied preoperatively and 7 days after treatment. The appropriate statistical tests will be applied for each specific analysis in a significance level of 5%.Discussion:Although the use of low-power laser in the postoperative has shown good results in the control of postoperative sequelae, this is the first study on the efficacy of the use of LED in this situation.

Este trabalho apresenta uma revisão de 848 radiografias panorâmicas dos arquivos da Disciplina de Cirurgia e Traumatologia BucoMaxilo-Facial, da Faculdade de Odontologia da Universidade Federal do Rio Grande do Sul, com a finalidade de avaliar a presença de dentes supranumerários, e suas características quanto ao sexo, localização, forma, situação no arco dentário, número de raízes e idade. O propósito deste trabalho foi comparar os dados encontrados com a literatura e analisar a prevalência de dentes supranumerários nessa população, segundo as características mencionadas. Foram encontrados 64 dentes supranumerários, em 54 pacientes, sendo a região anterior da maxila a de maior ocorrência, apresentando 37 (57,8%) do total dos casos de dentes supranumerários, com prevalência de dentes conóides e retidos, sem patologias locais associadas. Os resultados encontrados na população estudada estão de acordo com os achados científicos publicados na literatura.