Violet led dental whitening: Effectiveness and biological safety: An in vitro study.

INTRODUCTION: The light-emitting diode (Led) in the violet spectrum associated or not with hydrogen peroxide (HP) has been suggested as a promising technique for dental bleaching. Violet led has a wavelength of 405-410 nm, which is very close to that of ultraviolet (UV) radiation, and this has raised biological safety concerns. AIM: To investigate the effectiveness of the violet led dental bleaching technique by evaluating color parameters, enamel surface microhardness, and biological safety analysis. METHODS: One hundred bovine dental blocks were divided into groups according to the bleaching technique (G1 - only HP; G2 - HP associated with blue led; G3 - only blue led; G4 - HP associated with a violet led; and G5 - only violet led). The color analysis (ΔE, ΔL, and WID) and enamel surface microhardness were assessed before and after bleaching (immediately, 5, 14, and 30 days). The biological safety of the violet led irradiation was assessed by measuring the number of micronuclei formed in human cells in culture in response to irradiation. Data analysis included Kruskal-Wallis test, Friedman test, and Mann-Whitney test. RESULTS: In groups G4 and G5 there was the formation of precipitates on the enamel surface. At the time of 14 days, it was observed that the G2 group had lower values of microhardness than G5. ΔL and ΔE showed differences between groups in experimental times. Mean percentages of micronuclei occurrence were similar in the control group and the violet led group. CONCLUSION: The violet led irradiation can be applied for dental bleaching because this approach produces significant color changes preserving tooth enamel integrity and causes no genotoxic effects on vital cells.

Análise da casuística da condição bucal de pacientes da clínica cirúrgica de um hospital universitario / Analysis of cases of oral health condition of patients of surgical clinic of the hospital university / Análisis de la casuística del estado oral de pacientes de la clínica quirúrgica de un hospital universitario

Resumo Introdução e objetivo: A presença do cirurgião dentista na equipe de saúde multidisciplinar de atendimento hospitalar é essencial através da sua atuação em procedimentos que se fazem necessários para manutenção da saúde bucal e geral do paciente. Identificar os aspectos odontológicos dos pacientes, determinar a condição bucal e as lesões mais prevalentes na cavidade bucal dos pacientes internados, na Clínica Cirúrgica do Hospital Universitário da UFMA, Unidade Presidente Dutra. Materiais e métodos: Estudo descritivo, com base em dados secundários de uma amostra com 1475 pacientes internados na clínica cirúrgica do hospital no ano de 2017. Os dados coletados foram: gênero, idade, motivo da internação, tempo de internação, processos patológicos na cavidade bucal, presença e condição de prótese dental, procedimentos realizados e encaminhamentos. Os resultados foram analisados quantitativamente e empregado o teste do qui-quadrado (α=0,05). Resultados: Em relação aos achados clínicos, a prevalência de cárie foi de 11,32% dos pacientes, enquanto o cálculo/ biofilme foi detectado em 26,92%, a mobilidade dentária em 7,46% e raiz residual em 20% dos pacientes A higiene oral regular foi a mais prevalente com 73,54%, seguida por higiene oral deficiente 19,74% e boa com 6,72%. Conclusão: Os resultados mostram que as alterações bucais são frequentes na cavidade bucal de pacientes hospitalizados, com baixa frequência de boa higiene oral. Assim, a atuação da equipe de odontologia na equipe multiprofissional é fundamental por caracterizar essa população e relacionar com as variáveis clinicas, atendendo nos casos que é necessário e informando a importância da manutenção de uma boa saúde bucal.

Abstract Introduction and objective: The presence of the dental surgeon in the multidisciplinary health care team is essential through their performance in procedures that are necessary to maintain the patient's general and oral health. To identify the dental aspects of the patients, to determine the oral condition and the most prevalent lesions in the oral cavity of the hospitalized patients, at the Clinic Surgical Hospital of the University Hospital of UFMA, Presidente Dutra Unit. Methods: It is a descriptive study, based on secondary data and quantitative analysis. The sample consisted of patients hospitalized at the Hospital's surgical clinic. The obtained data were analyzed quantitatively, presented in absolute and percentage numbers, and the chi-square test (α = 0.05) was used. Results: Regarding the clinical findings, caries was prevalent in 11.32% of the patients. The calculation / biofilm was detected in 26.92%. Dental mobility had a prevalence of 7.46%. The residual root was present in 20% of patients Regular oral hygiene was prevalent with 73.54%, followed by poor oral hygiene 19.74% and good with 6.72%. Conclusion: The results show that dental changes are frequent in the oral cavity of hospitalized patients, with low fertility of good oral hygiene. Thus, the performance of the dentistry team in the patient care team is fundamental to characterize this population with the findings found through clinical examination, attending to cases that are necessary and informing the importance of maintaining good oral health.

Resumen Introducción y objetivo: La presencia del cirujano dentista en el equipo de salud multidisciplinario de atención hospitalaria es esencial a través de su actuación en procedimientos que se hacen necesarios para el mantenimiento de la salud bucal y general del paciente. Identificar los aspectos odontológicos de los pacientes, determinar la condición bucal y las lesiones más prevalentes en la cavidad bucal de los pacientes internados, en la Clínica Quirúrgica del Hospital Universitario de la UFMA, Unidad Presidente Dutra. Materiales y métodos: La investigación fue realizada a través de un estudio descriptivo, con base en datos secundarios y análisis cuantitativo. La muestra fue compuesta por 1475 pacientes internados en la clínica quirúrgica del Hospital en el año 2017. Los datos obtenidos fueron analizados cuantitativamente, presentados en números absolutos y porcentuales, y empleado el test del chi-cuadrado (α = 0,05). Resultados: En relación a los hallaz-gos clínicos, la prevalencia de caries fue del 11,32% de los pacientes. El cálculo / biopelícula fue detectado en el 26,92%. La movilidad dental tuvo una prevalencia del 7,46%. La raíz residual estuvo presente en el 20% de los pacientes La higiene oral regular fue prevalente con el 73,54%, seguida por higiene oral deficiente 19,74% y buena con el 6,72%. Conclusión: Los resultados muestran que las alteraciones bucales son frecuentes en la cavidad bucal de pacientes hospitalizados, con baja frecuencia de buena higiene oral. Así, la actuación del equipo de odontología en el equipo multiprofesional es fundamental por caracterizar esa población y relacionar con las variables clínicas, atendiendo en los casos que es necesario e informando la importancia del mantenimiento de una buena salud bucal.

How to use laser safely in times of COVID-19: Systematic review.

AIM: To conduct a systematic review of the literature on biosafety with the use of lasers. METHODS: The systematic review of literature was performed using MEDLINE (PubMed), Science Direct and Web of Science databases. The electronic search strategy included terms in the Medical Subject Heading (MeSH) related to biosafety in dentistry and laser, forms of contamination with aerosols, as well as their synonyms. The selected keywords were "aerosol virus transmission dentistry," "laser-generated air contaminants," "biosafety dentistry laser" combined with the terms AND/OR. RESULTS: A total of 1334 abstracts were reviewed, resulting in inclusion of 23 reviews. The dental surgeons are professionals with a high risk of contamination; high-power lasers form aerosols that need to be controlled and low-power lasers must be protected to minimize the risks of cross-infection. CONCLUSION: The biosafety of using lasers is important for professionals can be more oriented as to the correct use of this equipment. This study has the relevance of showing biosafety measures for the professional, staff and patients, as well as suggesting that more studies that are clinical should be conducted in this area.

Association of antimicrobial photodynamic therapy and photobiomodulation for herpes simplex labialis resolution: Case series.

Antimicrobial Photodynamic Therapy (aPDT) with photobiomodulation therapy (PBT) can be used in herpes simplex and may have a role in improving modulation of inflammatory process, pain relief and acceleration of tissue repair. This article reports through a case series, a proposal for an efficient resolution in clinical manifestations of herpes simplex labialis using aPDT associated with PBT.