Surface alterations of zirconia and titanium substrates after Er, Cr:YSGG irradiation
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2015
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Lasers in Medical Science
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This study investigated changes in the roughness
parameters (Sa in μm2 and Ra in μm) of yttrium-stabilized
tetragonal zirconia polycrystal (Y-TZP) and large-grit
sandblasted acid-etched (SLA) titanium (TI) materials after
decontamination by erbium chromium-doped:yttrium, scandium, gallium, and garnet (Er,Cr:YSGG) laser irradiation.
Twenty disks were analyzed in this study: 10 disks of Y-TZP
(5 mm in diameter and 3 mm in height), standardized with
CAD–CAM procedures, and 10 disks of SLA TI (5 mm in
diameter and 4 mm in thickness). Disks were randomized into
four groups (n=5), according to whether laser irradiation was
performed: Y-TZP_G1 and TI_G1 were not treated by laser
(control groups), whereas Y-TZP_G2 and TI_G2 were irradiated with Er,Cr:YSGG laser (1.5 W/20 Hz, air–water cooling
proportion of 80 %/25 %). The surface topography of the
disks was analyzed by confocal light microscopy. The mean
Sa and Ra values were calculated from five profiles from each
group. The results were statistically analyzed by t-test at the
95 % confidence level (α=0.05). For Y-TZP, the Sa results (in
mean±SD) for Y-TZP_G1 and Y-TZP_G2 were 2.60±1.1 and
0.80±0.17 μm2
, respectively, and the Ra results were 2.01±
0.71 and 0.18±0.15 μm, respectively (both p<.05). For SLA
TI, the Sa results for TI_G1 and TI_G2 were 1.99±0.5 and
3.37±0.75 μm2
, respectively, and the Ra results were 1.78±
0.53 and 3.84±0.63 μm, respectively (both p<.05).
Er,Cr:YSGG laser irradiation alters the surface roughness of
zirconia and SLA TI.
Como referenciar
MIRANDA, PERSIO V.; RODRIGUES, JOSE A.; BLAY, ALBERTO; SHIBLI, JAMIL A.; CASSONI, ALESSANDRA. Surface alterations of zirconia and titanium substrates after Er, Cr:YSGG irradiation. Lasers in Medical Science, v. 30, n. 1, p. 43-50, 2015. DOI: 10.1007/s10103-013-1516-x. Disponível em: http://repositorio.ipen.br/handle/123456789/23236. Acesso em: 25 Mar 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.