Selective ablation of surface enamel caries with a pulsed Nd:YAG dental laser

Harris, David; White, Joel M.; Goodis, Harold E.; Arcoria, Charles J.; Simon, James F.; Carpenter, William M.; Fried, Daniel; Burkart, John A.; Yessik, M.; Myers, Terry

doi:10.1002/lsm.10052

Cited by 43 publications

(17 citation statements)

References 15 publications

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“…6,13 Air abrasion with Al 2 O 3 particles, with sizes ranging from 25 to 250 lm, is commonly used to increase the adhesion of the luting agent with the process that removes the contamination layers of the zirconia surface. 16,17 Erbium:yttrium-aluminum garnet (Er:YAG) laser (k = 2.940 nm) and Neodymium:yttrium-aluminum-garnet (Nd: YAG) laser (k = 1.064 nm) were used for different clinical applications, including carious dentin removal and cavity preparations with Er:YAG laser 16,18,19 and tooth hypersensitivity, 20 bleaching, 21 and disinfecting dental tissues 22 with Nd:YAG laser. Recently, laser etching usually has been used on zirconia surface to provide a relatively safe and easy means of altering the surface of materials for improving surface roughness (SR) and shear bond strength (SBS), [10][11][12]23 although several authors 11,23,24 have investigated the effect of these lasers on zirconia surface for obtaining the best bonding with resin cement or veneering porcelain.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Surface Roughness and Bond Strength of Y-TZP Zirconia After Various Pre-Treatments

Kırmalı

Kuştarcı

Kapdan

et al. 2015

Photomedicine and Laser Surgery

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Section: Introductionmentioning

confidence: 99%

Efficacy of Surface Roughness and Bond Strength of Y-TZP Zirconia After Various Pre-Treatments

Kırmalı

Kuştarcı

Kapdan

et al. 2015

Photomedicine and Laser Surgery

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“…Researchers used neodymium:yttrium-aluminum-garnet (Nd:YAG) laser to reduce tooth sensitivity, 30 bleaching, 31 removing caries, 32 and roughening high-strength ceramic surfaces prior to adhesive or veneering ceramic cementation. 33,34 Erbium:yttrium-aluminum-garnet (Er:YAG) laser is efficiently used in preparing cavities, including removing caries and modifying ceramic surfaces.…”

mentioning

confidence: 99%

Shear Bond Strength of Veneering Ceramic to Zirconia Core After Different Surface Treatments

Kırmalı

Akin²,

Özdemir³

2013

Photomedicine and Laser Surgery

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Objective: The aim of this study was to evaluate the effect of different surface treatments: sandblasting, liners, and different laser irradiations on shear bond strength (SBS) of pre-sintered zirconia to veneer ceramic. Background data: The SBS between veneering porcelain and zirconium oxide (ZrO 2 ) substructure was weak. Various surface treatment methods have been suggested for zirconia to obtain high bond strength to veneering porcelain. There is no study that evaluated the bond strength between veneering porcelain and the different surface treatments on pre-sintered ZrO 2 substructure. Methods: Two hundred specimens with 7 mm diameter and 3 mm height presintered zirconia blocks were fabricated. Specimens were randomly divided into 10 groups (n = 20) according to surface treatments applied. Group C, untreated (Control); Group E, erbium:yttrium-aluminum-garnet (Er:YAG) laser irradiated; Group N, neodymium:yttrium-aluminum-garnet (Nd:YAG) laser irradiated; Group SB, sandblasted; Group L, liner applied; Group NL, Nd:YAG laser irradiated + liner applied; Group EL, Er:YAG laser irradiated + liner applied; Group SN, sandblasted + Nd:YAG laser irradiated; Group SE, sandblasted + Er:YAG laser irradiated; and Group SL, sandblasted + liner applied. The disks were then veneered with veneering porcelain. Before the experiment, specimens were steeped in 37°C distilled water for 24 h. All specimens were thermocycled for 5000 cycles between 5°C and 55°C with a 30 sec dwell time. Shear bond strength test was performed at a crosshead speed of 1 mm/min. The fractured specimens were examined under a stereomicroscope to evaluate the fracture pattern. Results: Surface treatments significantly changing the topography of the yttrium-stabilized tetragonal zirconia (Y-TZP) ceramic according to scanning electron microscopic (SEM) images. The highest mean bond strength value was obtained in Group SE, and the lowest bond strength value was observed in NL group.Bond strength values of the other groups were similar to each other. Conclusions: This study shows that sandblasting + Er:YAG, sandblasting, Er:YAG + liner, sandblasting + Nd:YAG, and Er:YAG laser treatment on pre-sintered ZrO 2 substructure increased the bond strength to veneering porcelain, compared with other surface treatments. After different surface treatments, there was no difference in surface roughness of pre-sintered zirconia to compare after sintering; sintering enhanced the bond strength within the limitations of present study.

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“…[25][26][27][28][29][30][31] Dental target selectivity using CO 2 lasers, Nd:YAG laser, and lasers with the wavelengths of 355, 377, and 400 nm has also been reported. [32][33][34][35][36] The present study of selective laser-based ablation for carious dentin is entirely novel. The mid-infrared wavelength of 5.85 μm has not been previously considered for medical applications.…”

Section: Discussionmentioning

confidence: 99%

Selective removal of carious human dentin using a nanosecond pulsed laser operating at a wavelength of 5.85 μ m

et al. 2015

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Selective removal of carious human dentin using a nanosecond pulsed laser operating at a wavelength of 5.85 µm Abstract. Less invasive methods for treating dental caries are strongly desired. However, conventional dental lasers do not always selectively remove caries or ensure good bonding to the composite resin. According to our previous study, demineralized dentin might be removed by a nanosecond pulsed laser operating at wavelengths of around 5.8 μm. The present study investigated the irradiation effect of the light on carious human dentin classified into "remove," "not remove," and "unclear" categories. Under 5.85-μm laser pulses, at average power densities of 30 W∕cm 2 and irradiation time of 2 s, the ablation depth of "remove" and "not remove," and also the ablation depth of "unclear" and "not remove," were significantly different (p < 0.01). The ablation depth was correlated with both Vickers hardness and Ca content. Thus, a nanosecond pulsed laser operating at 5.85 μm proved an effective less-invasive caries treatment.

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Selective ablation of surface enamel caries with a pulsed Nd:YAG dental laser

Abstract: The more conservative laser treatment removed the caries but not the sound enamel below the lesion. The pulsed Nd:YAG dental laser was found to be both safe and effective for surface caries removal.

Cited by 43 publications

References 15 publications

Efficacy of Surface Roughness and Bond Strength of Y-TZP Zirconia After Various Pre-Treatments

Efficacy of Surface Roughness and Bond Strength of Y-TZP Zirconia After Various Pre-Treatments

Shear Bond Strength of Veneering Ceramic to Zirconia Core After Different Surface Treatments

Selective removal of carious human dentin using a nanosecond pulsed laser operating at a wavelength of 5.85 μ m

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