Changes in chemical composition and collagen structure of dentine tissue after erbium laser irradiation

Bachmann, Luciano; Diebolder, Rolf; Hibst, Raimund; Zezéll, Denise Maria

doi:10.1016/j.saa.2004.09.026

Cited by 81 publications

(62 citation statements)

References 29 publications

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“…This lower temperature arises from the large thermal dissipation that occurs in the tissue when the tooth is whole and inserted in the oral cavity. By inference, the effects observed in this work which were a function of the temperature produced by laser irradiation would happen in the same form but with a lower intensity in vivo, assuming that a major thermal dissipation occurs in vivo 25) . X-ray diffraction analysis was used in this study to detect any phase change in the crystalline structure of dentin.…”

Section: Discussionmentioning

confidence: 67%

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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: Discussionmentioning

confidence: 67%

“…However, control dehydrated samples in this experiment did not show weakening of the peak intensity at 1,650, but rather at 3,400 cm -1 . Further, previous research work 25) showed that amide III peak of bovine dentin was affected by an increase in the output energy of Er:YAG laser irradiation and with no water irrigation.…”

Section: Discussionmentioning

confidence: 86%

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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“…23 Er:YAG laser diminishes the water content as well as the organic tissue of dentin at sub-ablative energy densities. 37 Moreover, subsurface fissuring in dentin following treatment with Er:YAG laser can be detrimental to the adhesion. 19 Laser-induced subsurface damage to dentin has been demonstrated by cracks created under the hybrid layer.…”

Section: Discussionmentioning

confidence: 99%

“…21,24 Laser irradiation seems not to be able to create an inter-diffusion zone similar to that created by acid etching. 37,39,40 It is worth mentioning that verification, i.e. recrystallization of dentin apatite and formation of more calcium phosphate, has not been evaluated thoroughly.…”

Section: Discussionmentioning

confidence: 99%

An In Vitro Comparison of the Bond Strength of Composite to Superficial and Deep Dentin, Treated With Er:YAG Laser Irradiation or Acid-Etching

et al. 2016

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“…These results suggested that the crystal formation of Ca, P and N on the dentin were affected by Er:YAG laser irradiation, therefore the binding energy of these elements changed. Irradiation by an Er:YAG laser beam significantly changes the absorption bands of dentin 30) . This is probably due to alteration of spectra and binding energies of the Ca, P and N on dentin irradiated by an Er:YAG laser beam.…”

Section: Discussionmentioning

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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Changes in chemical composition and collagen structure of dentine tissue after erbium laser irradiation

Cited by 81 publications

References 29 publications

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

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

An In Vitro Comparison of the Bond Strength of Composite to Superficial and Deep Dentin, Treated With Er:YAG Laser Irradiation or Acid-Etching

XPS analysis of the dentin irradiated by Er:YAG laser

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