aPDT associated with sequestrectomy in the treatment of osteonecrosis in cancer patients with metastasis: Case report.

INTRODUCTION AND IMPORTANCE: Bisphosphonates are drugs that have demonstrated effectiveness in the prevention and treatment of bone metastases from malignant neoplasms and other diseases of bone metabolism and although they represent a risk factor for osteonecrosis. PRESENTATION OF CASE: The present case depicts a patient with prostate neoplasia and metastases, referred to the dental department because he presented severe periodontal infection in the previous incisors of the mandible and was under treatment by intravenous zoledronic acid. A panoramic x-ray showed a marked bone loss with a periodontal infection that indicated the tooth exodontia of the affected teeth. However, 2 months after the removal of the dental elements, bone sequestration was detected a CT scan confirmed that. Surgery was then performed to remove mandibular bone sequestration and photodynamic therapy (aPDT) treatment for decontamination of the affected area. DISCUSSION: There was a tissue reconstitution of the site in 3 weeks and total eradication of bone necrosis with aPDT treatment associated with bone sequestration. CONCLUSION: aPDT has proven to be an effective complementary treatment for the process of tissue decontamination and photostimulation in cases of BRONJ.

Photobiomodulation therapy for oral mucositis management in head and neck cancer patients undergoing radiotherapy: case reports

Introduction: Photobiomodulation therapy (PBM) has been recommended for the prevention of oral mucositis (OM). Objective: to evaluate the use of PBM to prevent and control the severity of oral mucositis lesions and painful sensitivity in patients undergoing radiotherapy for head and neck cancer (HNC) treatment. Case reports: Eight patients with HNC attended for radiotherapy treatment, either associated with chemotherapy, or not were followed up. Clinical evaluation was performed, including meticulous anamnesis. The patients were followed up throughout the entire period of radiotherapy treatment. For the protocol of prophylaxis of OM, low level laser equipment was used, with a wavelength in the range of 660nm, in a contact mode, 30 mW of continuous emission 4J/cm² three times per week and for the therapeutic protocol wavelength in the range of 660nm, in a contact mode, 30 mW of continuous emission 8 J/cm², in the respective areas compromised by oral mucositis, 3 times per week till the complete remission of the lesions. All the patients were clinically followed up from the beginning of the antineoplastic therapy up to the conclusion of the medical treatment or total remission of the oral lesion, involving post radiotherapy control. A visual analog scale (VAS) was used to measure pain every week. Results: A progressive development of the lesions was observed from the 1st to the 5th week. Remission of OM was observed from the 7th week up to the conclusion of treatment. There is a continuous increase in the pain process, attaining the maximum level in the 6th week, with decline occurring up to the 7th week. Conclusion: Photobiomodulation therapy was able to control the severity of OM lesions and painful sensitivity in patients undergoing radiotherapy for head and neck cancer treatment, avoiding the interruption of the cancer therapy.

Introdução: A terapia com fotobiomodulação (FBM) tem sido recomendada para a prevenção da mucosite oral (MO). Objetivo: avaliar o uso de FBM para prevenir e controlar a gravidade das lesões da mucosite oral e a sensibilidade dolorosa em pacientes submetidos à radioterapia para tratamento de câncer de cabeça e pescoço (CCP). Relato dos casos: Oito pacientes com CCP atendidos para tratamento radioterápico, associado ou não à quimioterapia, foram acompanhados. Foi realizada avaliação clínica, incluindo anamnese meticulosa. Os pacientes foram acompanhados durante todo o período de tratamento radioterápico. Para o protocolo de profilaxia de MO, foi utilizado um equipamento laser de baixa potência, com comprimento de onda na faixa de 660nm, em modo de contato e 30 mW de emissão contínua com 4J/cm2. Para o protocolo terapêutico, e para comprimento de onda na faixa de 660nm, em modo de contato e 30 mW de emissão contínua com 8J/cm2 na área da lesão, até sua completa remissão. Todos os pacientes foram acompanhados clinicamente desde o início da terapia antineoplásica até a conclusão do tratamento médico ou remissão total da lesão oral, envolvendo o controle pós-radioterapia. Uma escala visual analógica (EVA) foi usada para medir a dor semanalmente. Resultados: Observou-se um desenvolvimento progressivo das lesões da 1ª à 5ª semana. A remissão da mucosite oral foi observada a partir da 7ª semana até o final do tratamento. Houve um aumento contínuo do processo doloroso, atingindo o nível máximo na 6ª semana, com declínio ocorrendo até a 7ª semana. Conclusão: A terapia de fotobiomodulação foi capaz de controlar a gravidade das lesões de MO e a sensibilidade dolorosa em pacientes submetidos à radioterapia para tratamento do câncer de cabeça e pescoço, evitando a interrupção da terapia oncológica.

Covid-19 e Odontologia: análise de informações disponíveis em uma plataforma virtual. Um estudo descritivo e observacional / Covid-19 and Dentistry: analysis of available information on a virtual platform. A descriptive and observational study

Objetivo: avaliar as informações disponíveis no site de buscas Google® sobre a relação entre a odontologia e a infecção pelo novo Coronavírus, e sua concordância com a literatura atual. Material e Métodos: estudo descritivo e observacional, realizado em uma universidade privada em Rio de Janeiro, Brasil, através da utilização da plataforma de buscas Google® aonde analisou-se os sites através de um roteiro de perguntas previamente elaborado. Resultados: foram analisados 67 sites após buscas pelas expressões "Coronavírus e odontologia", "Saúde bucal e Coronavírus" e "Fratura de dente e Coronavírus". Apenas 24,2% das perguntas foram respondidas com conteúdo completo enquanto 62,5% não apresentavam os conteúdos e 13,3% simplesmente os citavam sem dar maiores esclarecimentos. Apesar disso, 99% dos conteúdos foram publicados por fontes confiáveis (órgãos renomados, sites privados de profissionais da saúde bucal ou matérias de jornal assessoradas por estes). Conclusão: Apesar de confiáveis, os resultados das buscas apresentaram pequena quantidade de informações que realmente auxiliariam o leigo no entendimento da relação entre Coronavírus e odontologia, o que demonstra a necessidade de criação de canais oficiais para disseminação destas para o público geral

Objective:to evaluate the information available on the Google® search site concerning the relationship between dentistry and infection with the new coronavirus, and its concurrence with the current literature. Material and Methods: a descriptive and observational study was conducted by a private university in Rio de Janeiro, Brazil, to analyze the Google® search platform and the sites found through a previously prepared questionnaire. Results: the expressions "Coronavirus and dentistry", "Oral health and Coronavirus" and "Tooth fracture and Coronavirus" searched produced 67 sites for analysis. However, only 24.2% of the questions of the questionnaire were answered fully, while 62.5% did not answer them at all and 13.3% simply cited them without giving details. Notwithstanding this, 99% of the contents were published by official entities, dental websites or articles assisted by oral health care professionals. Conclusion: although reliable, the search results presented little information that would really help a layperson understand the relationship between Coronavirus and dentistry, which demonstrates the need to create official channels to disseminate such information to the public in an appropriate manner

Dental bleaching agents with calcium and their effects on enamel microhardness and morphology

Aim: To evaluate enamel microhardness and morphology after bleaching with hydrogen peroxide containing calcium in different concentrations. Methods: One hundred specimens of human teeth were ground and polished and had the initial microhardness evaluated. The specimens were randomly assigned into five groups (n=20): Group 1 - Control group (no treatment); Group 2 - Home Peroxide 6% (without calcium); Group 3 - Home Peroxide 7.5% (without calcium); Group 4 - White Class 6% (with calcium); Group 5 - White Class 7.5% (with calcium). For each group, the bleaching was performed according to the manufacturer's specifications. The specimens were bleached once a day for 5 days and subjected to pH cycling. Microhardness and scanning electron microscopy (SEM) analysis were performed before and after bleaching. Results: The results showed that groups submitted to bleaching treatment presented hardness loss compared to the control group. The group of 7.5% hydrogen peroxide with calcium showed a lower percentage of hardness loss in relation to other groups. Conclusion: Calcium in association with a higher hydrogen peroxide concentration may decrease microhardness changes on enamel.

Avaliação da influência da translucidez de pinos de fibra de vidro na resistência adesiva de um cimento autoadesivo / Evaluation of influence of translucency of fiberglass post in bond strength of a self-adhesive cement

Avaliar a resistência adesiva de um cimento autoadesivo com uso de pinos de fibra de vidro translúcidos ou não e avaliar possíveis diferenças nas diferentes regiões do canal radicular. Métodos - Quarenta incisivos centrais superiores humanos fornecidos pelo banco de dentes da Universidade Federal Fluminense-RJ foram instrumentados com a broca de maior calibre do sistema do pino utilizado. As amostras foram divididas em dois grupos de n=20 denominados de G1 e G2. Foram seccionadas e levadas ao ensaio de cisalhamento por extrusão. O teste t-Student foi utilizado para comparar a interação entre os grupos e entre as regiões do canal radicular. Resultados - A média da resistência adesiva para descolar o pino intracanal foi de 11,42 Mpa no G1 e 11,04 Mpa no G2. Não houve diferença significativa entre as amostras de pinos de fibra de vidro translúcido e opaco (p> 0.05) e nem entre as diferentes regiões do canal radicular para grupo G1 e G2 (p> 0.05). Conclusão - Pode-se concluir que não há influência quanto à translucidez do pino de fibra de vidro cimentado na qualidade de adesão intracanal quando utilizado um cimento autoadesivo...

To evaluate the bond strength of a self-adhesive cement with use of pins fiberglass translucent or not and to assess possible differences in different regions of the root canal. Methods - Forty human maxillary central incisors tooth bank provided by the Universidade Federal Fluminense-RJ were instrumented with larger-diameter drill pin system used. The samples were divided into two groups of n=20 called G1 and G2. Were selected and taken to a shear extrusion. The Student t test was used to compare the interaction between groups and between regions of the root canal. Results - The average bond strength to take off the pin intracanal was 11.42 MPa in G1 and 11.04 MPa in G2. There was no significant difference between samples of reinforced fiberglass translucent and opaque (p> 0.05) or between different regions of the root canal for G1 and G2 (p> 0.05). Conclusion - We can conclude that there is no influence on the translucency of the glass fiber pin cemented in the quality of intracanal adhesion when used a self-adhesive cement...