2008
DOI: 10.4012/dmj.27.433
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Effect of Pulse Duration of Er: YAG Laser on Dentin Ablation

Abstract: 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 den… Show more

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Cited by 36 publications
(30 citation statements)
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“…24 The outcomes of this study indicate that cavity preparation with the Er:YAG laser instead of rotary instruments can enhance mechanical properties and chemical composition of the lased substrate and possibly increase its resistance against further caries attack.…”
Section: Discussionmentioning
confidence: 96%
“…24 The outcomes of this study indicate that cavity preparation with the Er:YAG laser instead of rotary instruments can enhance mechanical properties and chemical composition of the lased substrate and possibly increase its resistance against further caries attack.…”
Section: Discussionmentioning
confidence: 96%
“…The pulse profile can be controlled to ensure that the power emitted during pulses is constant and that all or most of the emitted energy is used in the ablation process [25]. As CAD is a waterrich substrate, prone to a higher degree of ablation, it is fundamental that irradiation could adequately ablate dentin without thermal damage to preserve collagen fibrils, which will be key to the formation of the hybrid layer.…”
Section: Discussionmentioning
confidence: 99%
“…The key feature in these FIGURE 11 | Micro-milled pattern in fused silica using 6 ps pulses (1030 nm) delivered pulses via the NCF [50]. 1 100-5000 Human dentine 2.69-3.66 [29] experiments was that no cracking within the glass was observed after processing (Figure 11). This was the first demonstration of crack-free laser machining of glass with fiber delivered pulses in the 1 µm wavelength region.…”
Section: Micro-machining Applicationsmentioning
confidence: 99%