Cláudio Rômulo Comunian1, Antônio Luis Neto Custódio2, Leandro Junqueira de Oliveira3, Carlos Eduardo Assis Dutra1, Milton D'almeida Ferreira Neto4, Cleuza Maria Faria Rezende5. 1. Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos, CEP 31270-901, 6627, Pampulha, Belo Horizonte, MG, Brazil. 2. Department of Morphology, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos, CEP 31270-901, 6627, Pampulha, Belo Horizonte, MG, Brazil. 3. Pontifícia Universidade Católica de Minas Gerais, Av. Dom José Gaspar, 500, CEP 30535-901, Coração Eucarístico, Belo Horizonte, MG, Brazil. leojunq@hotmail.com. 4. FAINOR, Rua Geisiel Norberto, CEP 45000, Vitória da Conquista, BA, 1360, Brazil. 5. Department of Clinic and Surgery, School of Veterinary, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos, CEP 31270-901, 6627, Pampulha, Belo Horizonte, MG, Brazil.
Abstract
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.
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.
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