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Avaliação da laserterapia na prevenção de mucosite oral relacionada àradioterapia: comparação entre os efeitos de diferentes protocolos de laserde baixa potência / Evaluation of laser therapy in the prevention of oral mucositis related to radiotherapy: comparison among the effects of three different lowpower laser protocols
São Paulo; s.n; 2015. 77 p. ilus, tab.
Thesis in Portuguese | LILACS, Inca | ID: biblio-870252
RESUMO
O laser de baixa potência é uma nova opção terapêutica para a prevenção etratamento da mucosite oral. Este estudo consiste num ensaio clinico, randomizado eduplo-cego para comparar os efeitos de três diferentes protocolos de laser de baixapotência na prevenção e tratamento da mucosite oral radioinduzida para pacientescom tumores de boca, orofaringe e nasofaringe. Foram randomizados 73 pacientesdivididos em três grupos Grupo A (660 nm/15 mW/3,8 J/cm²/4 mm²), Grupo B (660nm/ 25 mW/6,3 J/cm²/4 mm²) iniciando a laserterapia partir do primeiro dia deradioterapia (RxT) e Grupo C (660 nm/15 mW/3,8 J/cm²/4 mm²) iniciando alaserterapia quando os pacientes desenvolveram grau II de mucosite oral. Aavaliação da mucosite oral foi feita diariamente e semanalmente de acordo com oscritérios de classificação do Instituto Nacional do Câncer (National Cancer Institute -NCI) e da Organização Mundial da Saúde (OMS). A avaliação da dor foi feitadiariamente, antes da aplicação do laser com ajuda de uma escala visual analógica.Os pacientes do Grupo A demoraram em média 16,7 dias para apresentar mucositegrau II, com variação entre 9 e 29 dias, os pacientes dos Grupos B e C demoraramem média 10,5 dias, com variação entre 7 e 18 dias e entre 4 e 18 dias,respectivamente (p > 0.001)...
ABSTRACT

Introduction:

Low-level laser therapy (LLLT) is a new therapeutic option formanagement of oral mucositis (OM) related to radiotherapy (RxT). Purpose. Thepurpose of this study was to compare the effects of three different LLLT protocols inthe prevention and treatment of OM in head and neck cancer patients.

Method:

Atotal of 73 patients with malignant neoplasms in the oral cavity, oropharynx ornasopharynx were evaluated. The patients were randomized into three LLLT groupsGroup A (660 nm/15 mW/3.8 J/cm2/spot size 4 mm2), Group B (660 nm/25 mW/6.3J/cm2/spot size 4 mm2) starting on first day of RxT and Group C (660 nm/15mW/3.8 J/cm2/spot size 4 mm2) when patients developed grade II OM. They wereassessed daily and weekly using the NCI and WHO scales. Oral pain was scoreddaily with a visual analogue scale.

Results:

Group A had a mean time of 16.7 days(range 9–29 days) to present OM grade II, while Group B had 10.5 days (range 7–18days) and Group C had 10.5 days (range 4–18 days) (p>0.001). In addition, GroupsB and C also presented higher mucositis grade than Group A with significantdifferences found in weeks 2 (p<0.001), 3 (p<0.042) and 5 (p<0.007) for Group 2;weeks 2 (p<0.002), 3 (p<0.006), 4 (p<0.006) 5 (p<0.013) and 7 (p<0.046) for Group3. The patients in Group A reported lower pain levels (p=0,002).

Conclusions:

LLLT during RxT was found to be more effective in controlling the intensity of OMand pain in Group A (660 nm/15 mW/3.8 J/cm2/spot size 4 mm2).
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Radiotherapy / Stomatitis / Mouth Neoplasms / Guidelines as Topic / Low-Level Light Therapy / Drug Therapy Type of study: Controlled clinical trial / Practice guideline Limits: Humans Language: Portuguese Year: 2015 Type: Thesis

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Full text: Available Index: LILACS (Americas) Main subject: Radiotherapy / Stomatitis / Mouth Neoplasms / Guidelines as Topic / Low-Level Light Therapy / Drug Therapy Type of study: Controlled clinical trial / Practice guideline Limits: Humans Language: Portuguese Year: 2015 Type: Thesis