ANA, P.A.ZEZELL, D.M.BLAY, C.C.BLAY, A.EDUARDO, C.P.MIYAKAWA, W.2014-11-192014-11-192015-04-012014-11-192014-11-192015-04-01ANA, P.A.; ZEZELL, D.M.; BLAY, C.C.; BLAY, A.; EDUARDO, C.P.; MIYAKAWA, W. Thermal analysis of dental enamel following Er, Cr:YSGG laser irradiation at low fluences. In: AMERICAN SOCIETY FOR LASER MEDICINE AND SURGERY, 24th, Mar. 31 - Apr. 4, 2004, Dallas, Texas. <b>Abstracts...</b> p. 53. Disponível em: http://repositorio.ipen.br/handle/123456789/22263.http://repositorio.ipen.br/handle/123456789/22263Background and Objectives: Er,Cr:YSGG laser radiation is slightly better absorbed by hydroxiapatite than the Er:YAG laser and this fact may indicate its use as a benefit tool for caries prevention. This study was performed to investigate the surface and intrapulpal temperature during Er,Cr:YSGG laser irradiation at sub-ablative conditions. Study Design/Materials and Methods: Twenty five extracted human molar teeth were selected and divided into five groups, according to the following Er,Cr:YSGG irradiation conditions without air-water spray: 1.0; 1.5; 2.8; 5.6; 8.5 J/cm2 . During laser irradiation, surface temperature was measured using a thermocamera (ThermaCAM-FLIR SC3000). The pulpal temperature was also monitored by means of a thermocouple type T (copper-constantan) placed in the pulpal chamber. Results: The surface temperature increased directly with the energy density of laser, and returned to its initial temperature 3 seconds after laser irradiation. Laser irradiation resulted in a non-significant intrapulpal temperature increase ( 1C) in all parameters tested. Temperature rise values were compared using analysis of variance (ANOVA) with alpha equals 0.05. Conclusions: The application of laser irradiation did not induce detrimental surface and pulpal temperature variations at the utilized parameters, being suitable for caries prevention.53openAccessneodymium laserspulse techniquesleaksteethetchingbondingResumo de eventos científicoshttps://orcid.org/0000-0001-7404-9606