ABSTRACT
The study analyzed the influence of temperature on the depth of cure of bulk-fill composite resins. Three discs (ISO 4049/2000) from each group were made, and four restorative materials were investigated: Opus Bulk-Fill Flow, Opus Bulk-Fill APS, Filtek™ One Bulk-Fill, and Filtek™ Bulk-Fill Flow. They were light-cured (Gnatus ± 1,200 mW/cm2) for 20 seconds, varying the temperature (23°C and 5°C) and simulating the use of the product both at room temperature and under refrigeration. The materials were inserted in aluminum matrices with 10 mm in depth and 4 mm in diameter. A clear film strip and a glass microscope slide were positioned at the top and bottom surfaces. The material was condensed and light-cured with the tip of the light source in close contact, for 20 seconds on the top surface. Immediately after irradiation, the samples were removed from the mold, and the uncured part was removed with a plastic spatula. The measurement was performed with a micrometer ± 0.1 mm, and the value was divided by 2. The data were analyzed with two-way ANOVA at a significance of 0.05. There was a statistical difference in the temperature between the results obtained in Opus Bulk-Fill APS (p <0.001) and Filtek™ Bulk-Fill Flow (p = 0.018) resins. For the temperature of 5°C, Filtek™ Bulk-Fill Flow showed a statistical difference compared to the other resins, while Opus Bulk-Fill Flow and Opus Bulk-Fill APS did not. For the temperature of 23°C, Filtek™ Bulk-Fill Flow maintained the statistical difference from the others, but Filtek™ One Bulk-Fill and Opus Bulk-Fill APS did not present statistical differences. Storing the Filtek™ Bulk-Fill Flow composite resin in the refrigerator caused a greater depth of cure than the other resins, and the depth of cure decreased at room temperature. As for Opus Bulk-Fill APS, the depth of cure decreased proportionally to the temperature decrease. The temperature may affect the depth of cure of some composite resins.
Subject(s)
Temperature , Cold Temperature , Composite Resins , PolymerizationABSTRACT
Abstract Lipolytic substance injections to reduce localized fat have been extensively used because it is a low-invasive method. This review aimed to evaluate the efficacy and safety of deoxycholic acid in submental fat reduction compared to a placebo and investigate the potential industry sponsorship bias in the results of randomized clinical trials on this topic. Ten electronic databases were extensively searched for randomized clinical trials without restriction on language and year of publication. Two reviewers extracted the data and assessed the individual risk of bias in the studies with the RoB 2.0 tool. The industry sponsorship bias was evaluated according to citations in the articles regarding industry funding/sponsorship throughout the texts. Fixed and random effects meta-analyses were performed, and the results were reported in Risk Ratio (RR) at a 95% Confidence Interval (95% CI). The initial search provided 5756 results, of which only five were included. Only two studies had a low risk of bias. All studies showed a potential industry bias. The meta-analysis showed that patients treated with deoxycholic acid had significant positive results for all efficacy outcomes and a higher risk of fibrosis, pain, erythema, numbness, swelling, edema, pruritus, nodules, headache, and paresthesia. The low to moderate certainty of evidence found allows concluding that deoxycholic acid is effective in submental fat reduction, causing well-tolerated adverse effects. However, all eligible studies showed a potential industry bias.
ABSTRACT
O objetivo do trabalho foi avaliar a influência da dor e ansiedade sobre a freqüência cardíaca (FC) e pressão arterial (PA) de 275 voluntários em situações de urgências endodônticas, selecionados de forma aleatória, entre os pacientes que procuraram o serviço do Pronto Socorro Odontológico da Faculdade de Odontologia da Universidade Federal de Uberlândia (FOUFU). Os voluntários responderam a ficha de anamnese e a Escala de Ansiedade Dental de Corah ainda na sala de espera. A Escala de 11 Pontos em Caixa foi usada para avaliar a sensação dolorosa dos voluntários, em dois momentos: antes do atendimento, para determinar a dor com que chegaram para atendimento e, após o tratamento, para determinar se houve alteração na sensação dolorosa. A PA e FC foram avaliadas através de esfingnomanômetro com coluna de mercúrio, também em dois momentos; inicialmente, com o paciente na sala de espera e, imediatamente aotérmino do atendimento, com o objetivo de correlacionar o controle eficaz da dor com a variação dos parâmetros cardiovasculares avaliados. De acordo com os resultados obtidos concluímos que a dor e a ansiedade não foram capazes de alterar significativamente a pressão arterial e freqüência cardíaca.
Subject(s)
Anxiety , Arterial Pressure , Endodontics , Heart Rate , Pain , Emergency Medical Services , Medical History TakingABSTRACT
O desenvolvimento de dentes ectópicos pode ocorrer em uma variedade de locais na cavidade oral e outras partes do corpo. Teorias têm sido propostas para explicar o mecanismo de erupção dentária na cavidade nasal, dentre elas o tratamento cirúrgico das fissuras labiopalatina, principalmente as relacionadas às anormalidades de posição. Será descrito o caso de um paciente que foi submetido à cirurgia para fechamento de fissura transforme unilateral direita, tendo sido diagnosticada posteriormente a presença de um dente parcialmente irrompido na cavidade nasal. Serão considerados etiologia, diagnóstico e tratamentos disponíveis.