Effects of 960-nm Diode Laser Irradiation on Calcium Solubility of Dental Enamel: Anin VitroStudy

2006 ◽  
Vol 24 (6) ◽  
pp. 689-693 ◽  
Author(s):  
Ilka T. Kato ◽  
Eduardo K. Kohara ◽  
Jorge E.S. Sarkis ◽  
Niklaus U. Wetter
Keyword(s):  
Laser Irradiation ◽  
Diode Laser ◽  
Dental Enamel ◽  
Calcium Solubility

Calcium solubility of dental enamel following Er, Cr:YSGG laser irradiation

2000 ◽  
Author(s):  
Christian Apel ◽  
Hans-Georg Graeber ◽  
Norbert Gutknecht
Keyword(s):  
Laser Irradiation ◽  
Dental Enamel ◽  
Calcium Solubility

Calcium solubility of dental enamel following sub-ablative Er:YAG and Er:YSGG laser irradiation in vitro

2002 ◽  
Vol 30 (5) ◽  
pp. 337-341 ◽  
Author(s):  
C. Apel ◽  
J. Meister ◽  
N. Schmitt ◽  
H.-G. Gräber ◽  
N. Gutknecht
Keyword(s):  
Laser Irradiation ◽  
Dental Enamel ◽  
Calcium Solubility

Initial Dissolution Rate Studies on Dental Enamel after CO2 Laser Irradiation

1992 ◽  
Vol 71 (7) ◽  
pp. 1389-1398 ◽  
Author(s):  
J.L. Fox ◽  
D. Yu ◽  
M. Otsuka ◽  
W.I. Higuchi ◽  
J. Wong ◽  
...  
Keyword(s):  
Dissolution Rate ◽  
Laser Irradiation ◽  
Co2 Laser ◽  
Dental Enamel ◽  
Initial Dissolution Rate

scholarly journals Bactericidal Effects of Diode Laser Irradiation on Enterococcus faecalis Using Periapical Lesion Defect Model

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Masato Nagayoshi ◽  
Tatsuji Nishihara ◽  
Keisuke Nakashima ◽  
Shigetsugu Iwaki ◽  
Ker-Kong Chen ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Diode Laser ◽  
Enterococcus Faecalis ◽  
Periapical Lesion ◽  
Lesion Area ◽  
Defect Model ◽  
Cytotoxic Effects ◽  
Periapical Lesions ◽  
Bactericidal Effects

Objective. Photodynamic therapy has been expanded for use in endodontic treatment. The aim of this study was to investigate the antimicrobial effects of diode laser irradiation on endodontic pathogens in periapical lesions using an in vitro apical lesion model. Study Design. Enterococcus faecalis in 0.5% semisolid agar with a photosensitizer was injected into apical lesion area of in vitro apical lesion model. The direct effects of irradiation with a diode laser as well as heat produced by irradiation on the viability of microorganisms in the lesions were analyzed. Results. The viability of E. faecalis was significantly reduced by the combination of a photosensitizer and laser irradiation. The temperature caused by irradiation rose, however, there were no cytotoxic effects of heat on the viability of E. faecalis. Conclusion. Our results suggest that utilization of a diode laser in combination with a photosensitizer may be useful for clinical treatment of periapical lesions.

scholarly journals Viability of human septal cartilage after 1.45 µm diode laser irradiation

2008 ◽  
Vol 40 (8) ◽  
pp. 562-569 ◽  
Author(s):  
Ick-Soo Choi ◽  
Yong-Seok Chae ◽  
Allison Zemek ◽  
Dmitry E. Protsenko ◽  
Brian Wong
Keyword(s):  
Laser Irradiation ◽  
Diode Laser ◽  
Septal Cartilage

scholarly journals Human Dental Enamel and Dentin Structural Effects after Er:yag Laser Irradiation

2014 ◽  
Vol 15 (3) ◽  
pp. 283-287 ◽  
Author(s):  
Mateus Rodrigues Tonetto ◽  
Marcelo Ferrarezi de Andrade ◽  
Shelon Cristina Souza Pinto ◽  
Darlon Martins Lima ◽  
José Roberto Cury Saad ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Soft Tissues ◽  
Er:Yag Laser ◽  
Laser System ◽  
Dental Enamel ◽  
Target Tissue ◽  
Structural Effects ◽  
Ablation Process ◽  
Dental Tissues ◽  
Laser Systems

ABSTRACT Ideally projected to be applied on soft tissues, infrared lasers were improved by restorative dentistry to be used in hard dental tissues cavity preparations — namely enamel and dentin. This paper evidentiates the relevant aspects of infrared Erbium laser's action mechanism and its effects, and characterizes the different effects deriving from the laser's beams emission. The criteria for use and selection of optimal parameters for the correct application of laser systems and influence of supporting factors on the process, such as water amount and its presence in the ablation process, protection exerted by the plasma shielding and structural factors, which are indispensable in dental tissues cavity preparation related to restorative technique, are subordinated to optical modifications caused by the interaction of the energy dissipated by these laser light emission systems in the targeted tissue substrate. Clinical relevance Differences in the action of infrared Erbium laser system in regard to the nature of the ablation process and variations on the morphological aspects observed in the superficial structure of the target tissue irradiated, may be correlated to the structural optical modifications of the substrate produced by an interaction of the energy propagated by laser systems. How to cite this article Lima DM, Tonetto MR, de Mendonça AAM, Elossais AA, Saad JRC, de Andrade MF, Pinto SCS, Bandéca MC. Human Dental Enamel and Dentin Structural Effects after Er:yag Laser Irradiation. J Contemp Dent Pract 2014;15(3):283-287.

scholarly journals Effect of submucosal ICG injection to prevent the injury on muscle layer due to diode laser irradiation

1996 ◽  
Vol 17 (Supplement) ◽  
pp. 477-480
Author(s):  
Shoryoku Hino ◽  
Takuya Hayashi ◽  
Tunenori Arai ◽  
Makoto Kikuchi ◽  
Katunori Masuda ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Diode Laser ◽  
Muscle Layer

scholarly journals The Efficacy of a Diode Laser on Titanium Implants for the Reduction of Microorganisms That Cause Periimplantitis

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7215
Author(s):  
Anna Wawrzyk ◽  
Michał Łobacz ◽  
Agnieszka Adamczuk ◽  
Weronika Sofińska-Chmiel ◽  
Mansur Rahnama
Keyword(s):  
Laser Irradiation ◽  
Diode Laser ◽  
Fungal Species ◽  
Laser Wavelength ◽  
Titanium Implants ◽  
Isolation And Identification ◽  
Implant Surface ◽  
Streptococcus Constellatus ◽  
Surface Optical ◽  
Irradiation Process

The paper presents the optimisation of a safe diode laser irradiation process applied to the surface of titanium implants in order to reduce microbial numbers in the treatment of inflammation classified as periimplantitis. The study comprised isolation and identification of microorganisms inhabiting surfaces of dental implants, crowns, teeth and saliva from patients with fully symptomatic periimplantitis. Microorganisms were detected by a culture-dependent method and identified with the use of MALDI-TOF mass spectrometry. The isolated microorganisms were inoculated on the surface of a new implant and then irradiated by a diode laser (wavelength of 810 ± 10 nm) in one, two or three repetitions and biocidal efficacy was assessed. To evaluate impact of laser irradiation on roughness, morphology and structure of the implant surface, optical profilometry, scanning electron microscopy and optical microscopy were used. Examination of the tested surfaces and saliva revealed the presence of Gram-positive and Gram-negative bacteria and one fungal species. In all patients, cultures from the endosseous part of the implant revealed the presence of the pathogenic and pyogenic bacterium Streptococcus constellatus. In 13 out of 20 samples laser-irradiated in duplicate and triplicate, all microorganisms were eliminated. The irradiation used did not cause any changes in the properties of the implant surface.

scholarly journals Effects of Diode and Nd:YAG Laser Irradiation on Friction Forces Between Two Types of Ceramic Brackets and Rhodium-Coated Archwires

2021 ◽  
Vol 12 (1) ◽  
pp. e13-e13
Author(s):  
Hannaneh Ghadirian ◽  
Allahyar Geramy ◽  
Mohammad Ali Keshvad ◽  
Soolmaz Heidari ◽  
Nasim Chiniforush
Keyword(s):  
Laser Irradiation ◽  
Diode Laser ◽  
Nd:Yag Laser ◽  
Yttrium Aluminum Garnet ◽  
Testing Machine ◽  
Control Group ◽  
Friction Forces ◽  
X Ray ◽  
Custom Made ◽  
Ceramic Brackets

Introduction: Ceramic brackets have gained increasing popularity among dental clinicians and orthodontic patients but friction is a major concern when using them. This study sought to assess the effects of diode and Nd:YAG (neodymium-doped yttrium aluminum garnet) laser irradiation on friction forces between two types of ceramic brackets and rhodium-coated esthetic archwires. Methods: Thirty polycrystalline and 30 poly-sapphire brackets were divided into 6 groups (n=10) as follows: (I) control polycrystalline brackets (no laser irradiation), (II) polycrystalline brackets subjected to diode laser irradiation, (III) polycrystalline brackets subjected to Nd:YAG laser irradiation, (IV) control poly-sapphire brackets (no laser irradiation), (V) poly-sapphire brackets subjected to diode laser irradiation, and (VI) poly-sapphire brackets subjected to Nd:YAG laser irradiation. The bracket slots were laser-irradiated on a custom-made table. Sixty 5-cm pieces of rhodium-coated archwires were used for the friction test in a universal testing machine at a speed of 10 mm/min. Ten brackets from the six groups underwent scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDX). Results: The frictional resistance value of polycrystalline brackets was significantly higher than that of poly-sapphire brackets, irrespective of laser type (P<0.05). Irradiation of diode and Nd:YAG lasers, compared with the control group, had no significant effect on friction, irrespective of bracket type (P>0.05). Conclusion: It appears that diode and Nd:YAG laser irradiation cannot significantly decrease the friction. Future studies are warranted on different laser types with variable exposure.

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