Laser Class
Mostrando 13-24 de 56 artigos, teses e dissertações.
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13. Ação da laserterapia de baixa intensidade (830nm) na regeneração muscular de ratos idosos
The elderly still go through physical changes, especially musculoskeletal disorders such as sarcopenia, changes in central and peripheral nervous system, blood hypoperfusion, regenerative changes contributing to atrophy and muscle weakness, undermining the activities of daily living (AVL). The regenerative process happens about the determination, proliferati
Publicado em: 2009
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14. Pulpal temperature increase with high-speed handpiece, Er:YAG laser and ultrasound tips
The aim of this study was to compare intrapulpal temperature increase produced by high-speed handpiece, Er:YAG laser and CVDentus ultrasound tips during cavity preparation. Thirty bovine mandibular incisors with an enamel/dentin thickness of 4 mm at buccal surface had their roots amputated and were allocated to the following groups (n=10): Group I- high-spee
Journal of Applied Oral Science. Publicado em: 2008-06
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15. Teoria para espectroscopia direta com pente de frequÃncias
In recent years, the stabilization of the frequency comb generated by a femtosecond laser resulted in a revolution in the field of high precision spectroscopy. Such frequency combs consist of millions of equally-spaced frequency modes in modelocking spanning tens of nanometers. Usually, for applications in optical metrology, a cw diode laser is phase locked
Publicado em: 2008
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16. Images acquisition system development and validation for sailing / Desenvolvimento e validação de sistema de aquisição de imagens na vela
This study aimed to develop instrumentation for images acquisition that makes possible movements quantification and kinematics analysis of the sailors hiking positions in Laser boats. Two waterproof boxes were developed for cameras protection, confectioned with fiberglass and acrylic lens viewfinder. The camera and lens viewfinder components had been tested
Publicado em: 2006
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17. Análise da emissão de conversão ascendente de energia do sistema vítreo ZBLAN: Er3+ em baixa temperatura
The upconversion process in rare earth elements (Er, Nd, Pr, Tm and Yb) doped fluoride glasses has received great attention from several researches. The main interest is its use in several technological applications as optical amplifiers and lasers. The fluoride glass (ZBLAN) is an amorphous glass and a good rare earth host material with low multiphonon rela
Publicado em: 2006
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18. Como as tecnicas restauradoras podem influenciar na qualidade das restaurações esteticas : avaliação da microdureza, selamento marginal e resistencia de união
The development of new restorative adhesive techniques has continuously advanced resulting in huge changes in the adhesive Dentistry. Thus, in this study it was evaluated the influence of some factors involved during the photoactivation procedures on the marginal adaptation and microhardness of Class II resin composite restorations; it was also investigate t
Publicado em: 2005
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19. Influence of light-curing sources on bond strength and on interfacial micromorphology of resin composite restorations a fluorescence microscopy study / Influência da fonte de luz fotoativadora na resistência de união e na micromorfologia da interface adesiva de restaurações de resina composta - Um estudo in vitro com microscopia de fluorescência
The purpose of the present in vitro study was to evaluate the effect of different light-curing sources on interfacial micromorphology and on bond strength of resin composite restorations. Class I preparations (6.0 mm long, 4.5 mm wide, 2.5 mm deep) were made in extracted human third molars, after abrading cusps, following university approved HAC guidelines.
Publicado em: 2005
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20. Influência de dois sistemas adesivos e de duas técnicas de fotopolimerização na microinfiltração marginal de restaurações Classe V após preparo com alta rotação e condicionamento com laser de Er:YAG.
The purpose of this study In vitro was to evaluate the influence of two abrasive systems and two photoactivation techniques on marginal microleakage in Class V restorations prepared with high speed rotation and Er:YAG laser conditioning. Besides, this study intended to observe, through scanning electron microscopy, the interfaces resin/dentin and resin/ename
Publicado em: 2004
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21. IN VITRO STUDY OF THE MICROLEAKAGE IN CLASS V CAVITIES RESTORATIONS PREPARED WITH AIR TURBINE AND LASERS Er:YAG AND Er,Cr:YSGG, AND BEING USED TWO ADHESIVE SYSTEMS / Estudo in vitro da microinfiltração em restaurações de cavidades classe V preparadas com alta rotação e lasers Er:YAG e Er, Cr:YSGG, utilizando-se dois sistemas adesivos
RESUMO O objetivo deste estudo foi comparar o grau de microinfiltração nas margens gengival e incisal de restaurações classe V frente aos seguintes métodos de preparo: 1) alta rotação, 2) laser Er:YAG modelo Opus 20 (Opus Dent) e 3) laser Er,Cr:YSGG modelo Waterlase (Millennium, Biolase). Foram avaliados também os sistemas adesivos Single Bond
Publicado em: 2004
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22. Elimination of Lubricants from Aluminum Cold Rolled Products Using Short Laser Pulses
This work presents a new technique to remove the surface impurities from the aluminum cold-worked sheets. The method consists to concentrate a short-time high-power pulsed laser on the materials surface and scan it in order to cover a desired area. Incrustations ablation is obtained as long as the fluency and the peak power are high enough to produce vaporiz
Materials Research. Publicado em: 2002-06
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23. Avaliação qualitativa da infiltração marginal nas restaurações em compositos polimerizados com laser de argonio e luz halogena
The purpose of this study was to evaluate the marginal leakage through dye penetration, in class V composite resin restorations, comparing the conventional visible light and argon laser polymerization. Circular cavities (2mm x 1,5 mm) were prepared on the CEJ on the buccal surfaces of 114 extracted human third molars. The teeth were randomly divided into 6 g
Publicado em: 2001
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24. Papilomatose recorrente respiratoria na laringe : caracteristicas epidemiologicas, clinicas e os resultados de tratamento com laser de CO2
A retrospective study of 72 patients with laryngeal recurrent respiratory papillomatosis was performed, from march 1986 to october 2000, at "Unidade Multidisciplinar de Medicina Laser" and "Serviço de Laringologia do Ambulatório da Unicamp", where they were diagnosed and folIowed. The study group was composed by adults and children from both sexo Their rec
Publicado em: 2001