Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/doi/10.1590/1807-2577.00320
Revista de Odontologia da UNESP
Original Article

Influence of photobiomodulation on pain perception during initial orthodontic tooth movement

Influência do fotobiomodulação na percepção da dor durante o movimento ortodôntico inicial

Welinton Lemos RUMÃO; Heloísa Cristina VALDRIGHI; Vivian Fernandes FURLETTI; Giovana Renata GOUVÊA; Milton SANTAMARIA-JR

http://dx.doi.org/10.1590/1807-2577.00320 Rev. odontol. UNESP, vol.49, e20200003, 2020
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Abstract

Abstract: Introduction: Laser in low intensity (LLI) has been used to reduce the discomfort and pain that is triggered by the forces applied during orthodontic treatment.

Objective: To evaluate the effect of LLI application in the pain perception of periodontal ligament initial compression, during orthodontic tooth movement; and to compare the effect of this therapy between men and women.

Material and method: The sample consisted of 30 volunteers, who needed orthodontic band placement on mandibular first molars. After insertion of the elastic separators, LLI was applied to the mesial and distal apical region (wavelength 808nm, energy 2J, time 20s and fluency of 8.32J/cm2) and at three points on the root region (wavelength 808nm, energy 1J, time 10s and fluency of 4.16J/cm2) of the first molar (irradiated side) and compared to the contralateral first molar (non-irradiated side), in three time intervals: 0hs, 24hs and 48hs. Pain perception was evaluated by the Visual Analog Scale (VAS), at 0hs, 24hs and 48hs after insertion, with significance of 5%.

Result: The pain level was observed to be significantly lower (p<0.05) on the irradiated side, irrespective of gender and time. Women presented a significantly higher pain level (p<0.05) than men, irrespective of time and side. There were no significant differences between the time intervals (p>0.05).

Conclusion: It was concluded that LLI reduced the perception of initial pain in patients in whom compression of the periodontal ligament was promoted by elastic separation, and that women had a greater perception of pain sensitivity in the time intervals studied.

Keywords

Pain, tooth movement, photobiomodulation, laser in low intensity

Resumo

Resumo: Introdução: O tratamento com Laser em Baixa Intensidade (LBI) tem sido utilizado para reduzir o desconforto e a dor desencadeados pelas forças aplicadas durante o tratamento ortodôntico.

Objetivo: Avaliar o feito da aplicação de LBI na percepção da dor na compressão inicial do ligamento periodontal durante o movimento dentário ortodôntico; e comparar o efeito desta terapia entre os sexos.

Material e método: A amostra foi composta por 30 voluntários, que necessitavam de bandagem dos primeiros molares inferiores. Após a instalação dos elásticos separadores, aplicou-se o LBI infravermelho na região apical mesial e distal (comprimento de onda 808nm, energia 2J, tempo 20s e fluência de 8,32J/cm2) e em três ponto na região radicular (comprimento de onda 808nm, energia 1J, tempo 10s e fluência de 4,16J/cm2) no lado irradiado e comparou-se com o primeiro molar contralateral não irradiado (lado controle), em três tempos: 0hs, 24hs e 48hs. A percepção de dor foi avaliada pela interpretação da Escala Visual Analógica (EVA) em 0hs, 24hs e 48hs após a instalação, com nílvel de significância de 5%.

Resultado: Observou-se que o nível de dor foi significativamente menor (p<0,05) no lado irradiado, independentemente do sexo e do tempo. O sexo feminino apresentou nível de dor significativamente maior (p<0,05) que o sexo masculino, independentemente do tempo e do lado. Não houve diferença significativa entre os tempos (p>0,05).

Conclusão: Concluiu-se que o LBI diminui a percepção de dor inicial em pacientes onde se promoveu a compressão do ligamento periodontal por meio de separação elástica, e que o sexo feminino apresentou maior percepção da sensibilidade dolorosa nos tempos observados.
 

Palavras-chave

Dor, movimento dentário, fotobiomodulação, Laser em Baixa Intensidade

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Submitted date:
01/20/2020

Accepted date:
06/08/2020

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