Photobiomodulation with LED and laser in repair of mandibular socket rabbit: clinical evaluation, histological, and histomorphometric.

PURPOSE: The aim of this study was to evaluate the effects of LED and low-intensity laser on the healing of rabbit dental alveoli. METHODS: A total of 18 rabbits were divided into three groups of six; all rabbits underwent surgical extraction of the first lower right premolar. Following surgery, group 1 received LED irradiation, group 2 received laser irradiation, and group 3 were untreated controls. The initial applications of LED and laser began 48 h after tooth extraction and were given perpendicularly to the dental alveoli. The three groups were clinically evaluated for 18 days in the postoperative period. At 90 days, the rabbits were euthanized and the mandibular fragments containing the healing alveoli were collected. These fragments initially underwent computed tomography scans and bone density was measured in Hounsfield units. Following this, the fragments were processed and stained with hematoxylin and eosin for histological and histomorphometric analysis. RESULTS: The results were compatible between the clinical, histological, and histomorphometric parameters evaluated. There were no statistical differences between the LED and laser groups. However, the difference of the average bone density between laser and control group was not statistically significant. CONCLUSIONS: It was found that photobiomodulation with LASER and LED presented effects. However, only the LED demonstrated a beneficial effect on the process of bone repair in the dental alveoli of rabbits.

Basic knowledge on oral cancer among a specific brazilian population / Conhecimento básico sobre câncer bucal em uma população brasileira específica

Objective: The aim of this investigation was to research the basic knowledge of oral cancer in a particular population belonging to the University Campus of Minas Gerais, where all individuals under investigation were highly exposed to information in general. Methods: The sample consisted of 260 individuals distributed amongst students, professors and administrative staff. The variables "risk factor", "protective factor", "oral cancer self-examination" and "initial signals on oral cancer" were categorized, scored and graded in order to obtain a better picture of the basic knowledge on oral cancer of that population. Results: The knowledge on oral cancer seems to increase with age and women had a better knowledge than men. Considering that this population was highly exposed to information available in the campus, the level of knowledge on oral cancer found was not at all satisfactory. Conclusion: It shows the need to invest in comprehensive and long-term educational programs about oral cancer, its causes and consequences, as well as how to prevent it.

Objetivo: O objetivo desta pesquisa foi avaliar os conhecimentos básicos do câncer bucal em uma população específica do Campus Universitário de Minas Gerais, onde todos os indivíduos sob investigação são mais expostos à informação em geral. Métodos: A amostra consistiu de 260 indivíduos distribuídos entre os estudantes, professores e pessoal administrativo. As variáveis "fator de risco", "fator protetor", "autoexame para câncer bucal" e "primeiros sinais de câncer bucal" foram categorizadas, pontuadas e classificadas, a fim de se obter uma melhor imagem do conhecimento sobre câncer bucal dessa população. Resultados: O conhecimento sobre câncer bucal parece aumentar com a idade, tendo as mulheres um melhor conhecimento que os homens. Considerando que essa população é mais exposta às informações disponíveis no campus, o nível de conhecimento sobre câncer bucal encontrado não foi de todo satisfatório. Conclusão: Os resultados mostram a necessidade de investimento a longo prazo em programas educativos mais abrangentes sobre o câncer bucal, suas causas e consequências bem como a forma de se evitá-lo.

Oral myiasis: a case report.

Oral Myiasis is a rare pathology in humans and is associated with poor oral hygiene, alcoholism, senility, suppurating lesions, severe halitosis and others conditions. The treatment is a mechanical removal of the maggots one by one but a systemic treatment with Ivermectin, a semi-synthetic macrolide antibiotic, have been used for treatment for oral myiasis. We present a case report of a 32-year-old man indigent, alcohol-dependent with an extensive necrotic area and acute swelling in upper lip and fetid odor. The patient's management included topic use of gentian violet, oral therapy with ivermectin (6 mg orally), surgical exploration to remove the larvae and necrotic tissue. After the complete larvae removal the swelling and the wounds were healing normally, the patients was referred to plastic surgery to repair tissue damage. The prevention of human myiasis is by education, but unfortunately in the developing countries some people live in low social condition, predisposing the occurrence of the infestation.