LUCIANO BACHMANN
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Resumo IPEN-doc 08431 Chemical Modification of bovine dental enamel irradiated with holmiun laser2004 - EDUARDO, P.L.P.; BACHMANN, L.; SALVADOR, V.L.; ZEZELL, D.M.This study investigated Ho:YLF (2,065 mm) effects on dental enamel with regards to the thermal variations in the pulp chamber during irradiation and resistance to demineralization. Twenty samples of bovine enamel were divided: 1) control- acidulated phosphate fluoride (APF) topic application followed by demineralization treatment with lactic acid; 2) Ho:YLF irradiation (100J/cm2) followed by APF and demineralization; 3) Ho:YLF irradiation (350J/cm2) followed by APF and demineralization; 4) Ho:YLF irradiation (450J/cm2) followed by APF and demineralization. All samples were quantified according to their calcium and phosphorous atoms relative concentrations before and after the treatments. X-Ray fluorescence spectrochemical analysis showed an increase on the calcium and phosphorous atoms concentration ratio and therefore the enamel demineralization reduction as a result of the lactic acid treatment in the samples irradiated with the holmium laser followed by the APF (ANOVA, Tukey p<0,01). To evaluate the feasibility of this study for clinical purposes, surfaces morphology were analyzed. Modifications were characterized by melted and re-solidified regions of the enamel, which can changes its permeability and solubility. Temperature changes of ten human pre-molars teeth irradiated with 350 J/cm2 and 450 J/cm2 were also monitored in the pulp chamber in real time. Temperature increases were limited to 4,2° C.Resumo IPEN-doc 14797 Changes in crystalline structure in dental enamel irradiated with Er,Cr:YSGG, Ho:YLF and Nd:YAG lasers2008 - ZEZELL, D.M.; ANA, P.A.; ROSA, K.; CRAIEVICH, A.; BACHMANN, L.Resumo IPEN-doc 07956 Determinacao do fator Msup(2) de um prototipo de Er:Tm:Ho:YLF utilizando a tecnica 'borda de lamina'1999 - BACHMANN, L.; ZEZELL, D.M.; MALDONADO, E.P.Resumo IPEN-doc 08048 Effects of holmium laser on dental structure in vivo2001 - STREFEZZA, C.; BACHMANN, L.; BAUER, J.A.; ANTONIAZZI, J.H.; EDUARDO, C.P.; ZEZELL, D.M.Provious in vitro has demonstrated that Ho:YLF laser is capable of inducing physical and chemical changes on dental surfaces for caries prevention. The temperature changes in the pulpal chamber was firstly evaluated in vitro to determine safe energy irradiation conditions range. The purpose of this work is to verify the occurrence of pulp inflammation under those irradiation conditions in rabbits. Ten rabbits (NZB) were divided in 5 groups according to the sacrifice period (control, immediately after irradiation, 6, 24 and 72 hours after irradiation). The rabbits posterior upper region teeth of each animal were irradiated with 10 pulses of a Ho:YLF prototype operating at 0.5 Hz and 300m)/pulse on the left side and 500m) on the right side. Sacrifices were obtained through transcardiac perfusion and the samples were prepared for pathological analysis. The in vitro temperature monitoring revealed an increase of 1°C to the 300m) energy and 4.5°C for the 500m) energy. SEM observations showed the occurrence of melting and resolidification. From the in vivo analysis it can be concluded that there was low degree of inflammation for the highest energy used and no pulpal alterations for the lowest one.Artigo IPEN-doc 05457 Combined effect of holmium laser and fluoride in prevention of dental caries in vitro1997 - ZEZELL, D.M.; BONK, P.A.; SALVADOR, V.L.R.; ROSSI, W.; RANIERI, I.M.; BACHMANN, L.; EDUARDO, C.P.; VIEIRA JUNIOR, N.D.; MORATO, S.P.Dissertação IPEN-doc 06894 Sistema de entrega de feixe para laser de Ho:YLF e aplicacoes em endodontia2000 - BACHMANN, LUCIANOResumo IPEN-doc 13094 The potential of the holmium laser to occluding dentinal tubules2002 - BACHMANN, L.; ROSSI, W.; ZEZELL, D.M.Artigo IPEN-doc 10246 Crystalline structure of dental enamel after Ho:YLF laser irradiation2004 - BACHMANN, L.; CRAIEVICH, A.F.; ZEZELL, D.M.Artigo IPEN-doc 07931 Combined effect of holmium laser and fluoride in prevention of dental caries 'in vitro'1998 - ZEZELL, D.M.; BONK, P.A.; SALVADOR, V.L.R.; ROSSI, W.; RANIERI, I.M.; BACHMANN, L.; EDUARDO, C.P.; VIEIRA JUNIOR, N.D.; MORATO, S.P.Artigo IPEN-doc 13873 Monitoracao de temperatura na camara pulpar durante irradiacao com laser de Ho:YLF na superficie de esmalte de dente de coelho2001 - STREFEZZA, CLAUDIA; GROTH, EDUARDO de B.; BACHMANN, LUCIANO; ZEZELL, DENISE M.