Laser effects on tissue and materials related to dentistry

Kinersly, T.; Jarabak, J.P.; Phatak, Nilkanth M.; DeMent, Jack

doi:10.14219/jada.archive.1965.0268

Cited by 57 publications

(17 citation statements)

References 31 publications

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“…After the discovery of the ruby laser in 1960, Goldman and coworkers (65) attempted caries removal in vitro using the ruby laser in 1964. Since then, many researchers have investigated the effects of various lasers such as the argon, CO 2 , and Nd:YAG lasers on dental hard tissues and caries (95, 190). However, previous laser systems were basically not indicated for hard tissue procedures due to major thermal damage (55, 214).…”

Section: Application Of Lasers In Periodontal Therapymentioning

confidence: 99%

Lasers in nonsurgical periodontal therapy

Aoki¹,

Sasaki²,

Watanabe³

et al. 2004

Periodontology 2000

409

392

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Section: Application Of Lasers In Periodontal Therapymentioning

confidence: 99%

Lasers in nonsurgical periodontal therapy

Aoki¹,

Sasaki²,

Watanabe³

et al. 2004

Periodontology 2000

409

392

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“…Studies have been performed using different kinds of lasers, including Er:YAG lasers and Nd:YAG lasers 2) , and CO2 lasers 3,4) . Attention has focused on Er: YAG lasers due to their high efficacies in removing dental hard tissue [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

XPS analysis of the dentin irradiated by Er:YAG laser

et al. 2009

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The aim of this study was to investigate the effect of Er:YAG laser irradiation on human dentin surface using X-ray photoelectron spectroscopy (XPS). 10 human dentin disks were prepared from extracted human molars for XPS analysis. These specimens were divided into two groups of five: a control group and group that were irradiated by an Er:YAG laser beam (100 mJ, 1Hz). All specimens were analyzed by XPS over a wide scanning range and narrow scanning ranges. The Ca/P ratio was calculated from the XPS results.In the results, the binding energies of Ca, P, and N in the laser-irradiated group were higher than those in the control group. The Ca/P ratio of the Er:YAG laser irradiated group (1.24±0.05) was significantly lower than that of the control group (1.52±0.16). This study showed that Er:YAG laser irradiation decreased Ca/P ratio and denatured the collagen of human dentin.

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“…1 Subsequently, many researchers have investigated the effects of laser irradiation on dental hard tissues and caries. [2][3][4] However, the earliest developed lasers, such as carbondioxide (CO 2 ) and neodymiumdoped:yttrium-aluminum garnet (Nd:YAG), required relatively high-energy densities to vaporize the hard tissues and lead to major thermal side effects, such as melting, cracking or charring of enamel, dentin and pulpal damage. [5][6][7][8] Hence, these laser systems are not advised for use in hard tissue treatments, even though they have widespread usage in soft tissues.…”

Section: Introductionmentioning

confidence: 99%

“…Dentin microhardness, which depends on the amount of calcified matrix per mm 2 , is inversely correlated to the tubular density microhardness determination and is indirect evidence of mineral loss or gain in dental hard tissues. 30 Kinney and others 31 showed that the decrease in stiffness of intertubular dentin matrix was caused by the heterogeneous distribution of the mineral phase within the collagen matrix.…”

mentioning

confidence: 99%

Effect of Different Laser Devices on the Composition and Microhardness of Dentin

Çelik

Ergücü²,

Türkün³

et al. 2008

Operative Dentistry

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This study determined the compositional changes and microhardness of the cavity floor prepared by Er,Cr:YSGG and Er:YAG lasers and compared the results with the conventional method of bur preparation. Fifteen non-carious human molars were used in this study. On the buccal and lingual surfaces of each tooth, two cavities (mesio-distal 3 mm, inciso-gingival 3 mm, depth 2 mm) were prepared with two different laser devices (Er,Cr:YSGG laser; Waterlase MD and Er:YAG laser; KaVo Key Laser 3) and a highspeed turbine. The teeth were embedded into polyester resin and cross-sectioned. The microhardness measurements from the floor of each half cavity were recorded with the Vickers surface hardness tester. The remaining halves of the cavities were subjected to SEM-EDS atomic analysis. The results were statistically evaluated by one-way ANOVA and Kruskal Wallis tests (p=0.05). No significant differences were observed among the microhardness values, quantities of Ca (Ca weight %), P (P weight %) and Ca/P ratio of the lased and conventionally prepared cavities (p>0.05). The cavity preparation techniques and differences in laser devices did not significantly alter the composition and microhardness of dentin tissue. Both laser devices used in this study were observed to lead

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Laser effects on tissue and materials related to dentistry

Cited by 57 publications

References 31 publications

Lasers in nonsurgical periodontal therapy

Lasers in nonsurgical periodontal therapy

XPS analysis of the dentin irradiated by Er:YAG laser

Effect of Different Laser Devices on the Composition and Microhardness of Dentin

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