Morphologic Changes and Removal of Debris on Apical Dentin Surfaces after Nd:YAG Laser and Diode Laser Irradiation

2008 ◽  
Vol 26 (3) ◽  
pp. 263-266 ◽  
Author(s):  
Cacio de Moura-Netto ◽  
Abilio Albuquerque Maranhão de Moura ◽  
Harry Davidowicz ◽  
Carlos Eduardo Aun ◽  
Miriam Porcel do Santos Antonio
Keyword(s):  
Laser Irradiation ◽  
Diode Laser ◽  
Nd:Yag Laser ◽  
Morphologic Changes

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.

scholarly journals Morphologic Changes of Zebrafish Melanophore after Intense Pulsed Light and Q-Switched Nd:YAG Laser Irradiation

2016 ◽  
Vol 28 (6) ◽  
pp. 711
Author(s):  
Hwa Jung Ryu ◽  
Ji Min Lee ◽  
Hee Won Jang ◽  
Hae Chul Park ◽  
Im Joo Rhyu ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Nd:Yag Laser ◽  
Intense Pulsed Light ◽  
Pulsed Light ◽  
Morphologic Changes

Preventive Effect of Tooth Fracture by Pulsed Nd:YAG Laser Irradiation with Diamine Silver Fluoride Solution

2001 ◽  
Vol 19 (6) ◽  
pp. 315-318 ◽  
Author(s):  
Keiko Yokoyama ◽  
Yuichi Kimura ◽  
Koukichi Matsumoto ◽  
Akihiro Fujishima ◽  
Takashi Miyazaki
Keyword(s):  
Laser Irradiation ◽  
Nd:Yag Laser ◽  
Preventive Effect ◽  
Fluoride Solution ◽  
Pulsed Nd:Yag Laser ◽  
Tooth Fracture ◽  
Silver Fluoride

Influence of Nd:YAG Laser Irradiation on an Adhesive Restorative Procedure

2006 ◽  
Vol 31 (5) ◽  
pp. 604-609 ◽  
Author(s):  
M. Franke ◽  
A. W. Taylor ◽  
A. Lago ◽  
M. C. Fredel
Keyword(s):  
Statistical Analysis ◽  
Bond Strength ◽  
Laser Irradiation ◽  
Significant Influence ◽  
Nd:Yag Laser ◽  
Deleterious Effect ◽  
Adhesive System ◽  
High Energy ◽  
Low Energy ◽  
Adhesive Penetration

Clinical Relevance Statistical analysis of the results obtained in this study shows that Nd:YAG laser irradiation on the adhesive system has a significant influence on bond strength to dentin. Bond strength is improved by better adhesive penetration when low energy is applied; whereas, high energy densities have a deleterious effect on the procedure.

Effects of Dentin Surface Modifications Treated with Er:YAG and Nd:YAG Laser Irradiation on Fibroblast Cell Adhesion

2012 ◽  
Vol 30 (2) ◽  
pp. 63-70 ◽  
Author(s):  
Gombo Bolortuya ◽  
Arata Ebihara ◽  
Shizuko Ichinose ◽  
Satoshi Watanabe ◽  
Tomoo Anjo ◽  
...  
Keyword(s):  
Cell Adhesion ◽  
Laser Irradiation ◽  
Nd:Yag Laser ◽  
Surface Modifications ◽  
Fibroblast Cell ◽  
Dentin Surface

Effect of Pre-Oxidized CuO Layer in Joining between Polyethylene Terephalate (PET) and Copper (Cu) by Using Pulsed Nd:YAG Laser

2010 ◽  
Vol 129-131 ◽  
pp. 714-718 ◽  
Author(s):  
Farazila Yusof ◽  
Yoshiharu Mutoh ◽  
Yukio Miyashita
Keyword(s):  
Laser Irradiation ◽  
Nd:Yag Laser ◽  
Shear Failure ◽  
High Heat ◽  
Experimental Result ◽  
Joint Interface ◽  
Intimate Contact ◽  
Cross Sectional ◽  
Pulsed Nd:Yag Laser ◽  
Oxide Particles

In the present study, effect of pre-oxidized (PO) CuO layer in the joining between polyethylene terephalate (PET) and copper (Cu) by using pulsed Nd:YAG laser was investigated. The experimental result for PET/PO Cu (with pre-oxidized layer) and PET/Cu (without pre-oxidized layer) were presented in this paper. The results showed the pre-oxidation surface improved the welding efficiency. The welded area and tensile shear failure load (TSFL) of PET/PO Cu joint were increased when pre-oxidized layer was introduced. This indicates that high heat was absorbed during laser irradiation of PET/PO-Cu joint compare to PET/Cu joint. On the other hand, the fracture surface of PET/PO-Cu showed the presence of Cu and Cu oxide particles in the PET side. While in case of PET/Cu, no occurrence of Cu particles can be observed. The presence of Cu oxide particles and Cu particles were believed may increase PET/PO Cu joint shear force. From the cross-sectional observation of PET/PO Cu joint interface, it was found that an oxide layer in the laser irradiation area was removed and PET seemed to have intimate contact with Cu surface.

Impact of Pulsed Nd:YAG Laser Irradiation on the Growth and Mortality of the Biofilm Forming Marine Bacterium Pseudoalteromonas carrageenovora

Biofouling ◽  
2002 ◽  
Vol 18 (2) ◽  
pp. 123-127 ◽  
Author(s):  
Kanavillil Nandakumar ◽  
Hideki Obika ◽  
Tatsuya Shinozaki ◽  
Toshihiko Ooie ◽  
Akihiro Utsumi ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Nd:Yag Laser ◽  
Marine Bacterium ◽  
Pulsed Nd:Yag Laser

The effect of a pulsed-Nd:YAG laser irradiation on microstructure of human gingiva

1997 ◽  
Vol 27 (2) ◽  
pp. 317
Author(s):  
Kyung-Yoon Han ◽  
Kwang-Yong Shin ◽  
Chun-Seok Kim ◽  
Hyung-Soo Kim ◽  
Chang-Yup Yum ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Nd:Yag Laser ◽  
Pulsed Nd:Yag Laser ◽  
Human Gingiva
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