Er:YAG laser treatments on dentine surface: micro-Raman spectroscopy and SEM analysis

Camerlingo, C.; Lepore, Maria; Gaeta, Giuseppe Lucio; Riccio, R.; Riccio, C; Rosa, Alfredo De; Rosa, Mario De

doi:10.1016/j.jdent.2004.01.011

Cited by 59 publications

(49 citation statements)

References 15 publications

(14 reference statements)

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“…When the output energy of Er:YAG laser was increased, intensity of amide II peak in Groups II and III weakened. These results complemented the micro-Raman spectroscopy findings of a previous study 9) , whereby it was reported that dentin collagen components were modified when Er:YAG laser was used at 350 mJ/pulse coupled with short pulse duration and water irrigation.…”

Section: Discussionsupporting

confidence: 88%

“…A previous research work 9) showed that Er:YAG laser treatment could induce some chemical changes on treated dentin surface, depending on the duration time of Er:YAG laser pulse. It was also suggested that there is a need to develop a new class of restorative materials with optimal interaction properties with laser-treated dentin surface 9) .…”

Section: Introductionmentioning

confidence: 98%

“…It was also suggested that there is a need to develop a new class of restorative materials with optimal interaction properties with laser-treated dentin surface 9) . To develop such restorative materials and to determine the most suitable parameters for Er:YAG laser application on dentin, an extensive research work should be carried out analyzing the chemical compounds and changes in crystalline structure of dentin after Er:YAG laser irradiation.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Er:YAG Lased Dentin Using Attenuated Total Reflectance Fourier Transform Infrared and X-ray Diffraction Techniques

et al. 2007

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The purpose of this study was to investigate the chemical characteristics of dentin after Er:YAG laser irradiation using various output energies with or without water irrigation. Analysis was carried out by means of attenuated total reflectance Fourier transform infrared spectroscopy (FT-IR/ATR) and X-ray diffraction (XRD). Furthermore, the relative infrared peak intensities of dentin specimens were compared statistically. Results showed that Er:YAG laser with an output energy of 100 mJ/pulse with water irrigation did not cause any detectable change in dentin. However, a higher energy output or the absence of water irrigation affected the organic portion of dentin. With XRD, no obvious phase changes were observed between the XRD pattern of the control (non-irradiated) dentin powder and those after Er:YAG irradiation -regardless of Er:YAG laser output energy or dehydration condition. It was suggested that the intrinsic water content of dentintogether with extrinsic water irrigation -were important factors to achieving the desired outcome of dentin ablation by Er:YAG laser.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Analysis of Er:YAG Lased Dentin Using Attenuated Total Reflectance Fourier Transform Infrared and X-ray Diffraction Techniques

et al. 2007

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“…To date, few researchers have examined the effects arising from varied pulse durations of Er: YAG laser [20][21][22][23] . With varied laser pulse durations and energy fluences of Er: YAG laser, Majaron et al 21) quantitatively examined their effects on depth and diameter and calculated the crater volumes thereof.…”

Section: Discussionmentioning

confidence: 99%

“…As for the dark layer observed in this study, it was thought to be the thermal-affected layer. By means of SEM, Camerlingo et al 22) observed the dentin surfaces which were irradiated by Er: YAG laser with pulse durations from 100 to 1000 μs, and also analyzed the lased surface in each condition with micro-Raman spectroscopy (μ-RS). At 100 μs pulse duration, the SEM images were similar to those of the present study.…”

Section: Discussionmentioning

confidence: 99%

Effect of Pulse Duration of Er: YAG Laser on Dentin Ablation

Nishimoto

Otsuki

Yamauti³

et al. 2008

Dent. Mater. J.

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The present study examined the effects on dentin ablation efficiency arising from various pulse durations of Er: YAG laser at a fixed energy fluence. Ten flat human dentin disks were prepared and exposed to an Er: YAG laser at 1 pps for three seconds at pulse durations of 100 -500 μsec with 150 mJ/pulse (40.0 J/cm 2 •pulse). The depth and diameter of the ablated dentin were measured and the ablation volume was estimated. Irradiated surfaces and cross-sections were observed using a SEM. Depth of the removed dentin increased and the diameter of the spot decreased without a change in the estimated volume at increased pulse durations. SEM observation of the irradiated surfaces revealed that there were no morphological differences when the pulse duration was changed. When the specimens were cross-sectioned, the ablated dentin had a dome shape and there was a dark layer under the irradiated surface.

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