Laser Diode
Mostrando 25-36 de 151 artigos, teses e dissertações.
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25. Efeito da terapia LED (λ = 945 ± 20 nm) de baixa intensidade sobre tecido epitelial de ratos diabéticos em processo de reparo
INTRODUÇÃO: O diabetes mellitus é uma condição sistêmica que pode causar retardo da resposta tecidual frente a uma lesão. Diversos estudos têm apontado o laser como importante ferramenta terapêutica para o auxílio do processo de reparo tecidual. Contudo, poucos estudos foram realizados com o emprego de LED (Light Emitting Diode). Assim, o objetivo
Rev. Bras. Eng. Bioméd.. Publicado em: 2013-12
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26. Efeito do laser vs LED na região do infravermelho próximo sobre a atividade muscular esquelética: estudo clínico
INTRODUÇÃO: Estudos têm demonstrado a efetividade do laser no infravermelho (IV) sobre a atividade musculoesquelética. Contudo, não foram observados estudos sobre os efeitos da radiação emitida por um LED (Light Emitting Diode) no IV sobre a atividade do músculo masseter (MM, importante músculo da mastigação), sendo este o objetivo do presente est
Rev. Bras. Eng. Bioméd.. Publicado em: 2013-09
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27. Effect of laser phototherapy in the prevention and treatment of chemo-induced mucositis in hamsters
The aim of this study was to investigate the effect of laser phototherapy (LPT) in the prevention and/or treatment of oral mucositis induced by 5-fluorouracil (5-FU; Eurofarma, São Paulo, Brazil) in hamsters. Ninety-six hamsters were divided into four groups (n = 24): Control (no treatment); Preventive [LPT from day (D) D-5 to D+5]; Therapeutic (LPT from D+
Braz. oral res.. Publicado em: 11/06/2013
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28. Low-intensity laser therapy and led (light emitting diode) therapy in mechanical resistance of Rattus norvegicus chest inscision with implant of steel wire for sternal suture
INTRODUCTION: Low-intensity laser (LILT) and LED therapy are indicated in repairing surgical incisions, which occur in cardiac surgery. One major concern in this case is the presence of metallic wire used for sternal sutures, its temperature may rise while using a laser or LED. This study aimed to analyze the tensiometric properties of the skin tissue with l
Rev. Bras. Eng. Bioméd.. Publicado em: 2013-06
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29. High-efficiency tooth bleaching using non-thermal atmospheric pressure plasma with low concentration of hydrogen peroxide
Light-activated tooth bleaching with a high hydrogen peroxide (HP; H2O2) concentration has risks and the actual role of the light source is doubtful. The use of conventional light might result in an increase in the temperature and cause thermal damage to the health of the tooth tissue. Objective This study investigated the efficacy of tooth bleaching using
J. Appl. Oral Sci.. Publicado em: 2013-06
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30. Influence of photo-activation source on enamel demineralization around restorative materials
This study evaluated the effects of the photoactivation source and restorative material on the development of caries-like lesions on human enamel after an in vitro pH challenge. Enamel cavities were prepared in 36 blocks, which were assigned to two groups according to the restorative material: resin-modified glass ionomer (RMGI) and composite resin (CR). Sam
Braz. oral res.. Publicado em: 01/03/2013
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31. Lipólisis láser y liposucción en ginecomastia: retracción cutánea eficaz y segura
OBJECTIVES: To evaluate efficacy of laser lipolysis in the treatment of gynecomastia to correct breast volume, flaccidity and excess skin without its excision. METHODS: Prospectively, 32 patients with gynecomastia under tumescent anaesthesia and sedation underwent laser lipolysis with 980nm diode laser, 15W continuous emission and 8 to 12 kJ energy per breas
Rev. Col. Bras. Cir.. Publicado em: 2013-02
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32. Efeitos dos lasers de diodo de alta e baixa potência no processo de reparo de reabsorções radiculares após reimplante tardio: análise clínica e radiográfica em ratos / Effects of high and low diode power lasers in process of heal of root resorptions in delayed replanted: clinical and radiographic analysis in rats
Objetivo: Avaliar clínica e radiograficamente os efeitos da irradiação com laser de diodo de alta potência e de baixa potência em dentes de ratos, reimplantados tardiamente. Método: Foram utilizados incisivos direitos de cinquenta ratos (Wistar) com peso entre 250 a 350g. Os dentes foram extraídos, permanecendo em meio ambiente durante 60min. Em segui
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/06/2012
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33. Avaliação da influência das fontes de ativação na profundidade de polimerização de materiais restauradores e seus efeitos na resistência á desmineralização do esmalto. / Evaluation of the influence of sources of activation in depth of cure restorative materials and their effects on resistance to demineralization esmalto.
profundidade de polimerização de materiais restauradores e seus efeitos na resistência à desmineralização do esmalte. Dezoito dentes humanos foram seccionados em trinta e seis blocos. Cavidades foram realizadas e os dentes foram divididos em 2 grupos de acordo com o material restaurador (n=18): ionômero de vidro modificado por resina - IVRM (Vitremer-
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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34. Comparative clinical study of the effectiveness of different dental bleaching methods - two year follow-up
This study evaluated color change, stability, and tooth sensitivity in patients submitted to different bleaching techniques. MATERIAL AND METHODS: In this study, 48 patients were divided into five groups. A half-mouth design was conducted to compare two in-office bleaching techniques (with and without light activation): G1: 35% hydrogen peroxide (HP) (Lase P
J. Appl. Oral Sci.. Publicado em: 2012-08
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35. Influence of prior 810-nm-diode intracanal laser irradiation on hydrophilic resin-based sealer obturation
Dentin wall structural changes caused by 810-nm-diode laser irradiation can influence the sealing ability of endodontic sealers. The objective of this study was to evaluate the apical leakage of AH Plus and RealSeal resin-based sealers with and without prior diode laser irradiation. Fifty-two single-rooted mandibular premolars were prepared and divided into
Brazilian Oral Research. Publicado em: 19/06/2012
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36. Dental pulp vascular permeability changes induced by dental bleaching
Aiming to compare the effect of different light sources for dental bleaching on vascular permeability of dental pulps, forty-eight incisors were used. The bleaching agent (35 % hydrogen peroxide) was activated by halogen light; LED (Light Emitting Diode) or LED, followed by laser phototherapy (LPT) (λ = 780 nm; 3 J/cm²). After the bleaching procedures, the
Brazilian Archives of Biology and Technology. Publicado em: 2012-02