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Er,Cr:YSGG

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https://www.readbyqxmd.com/read/29732016/effect-of-surface-preparation-with-nd-yag-and-er-cr-ysgg-lasers-on-the-repair-bond-strength-of-lithium-disilicate-glass-ceramic-to-a-silorane-based-composite-resin
#1
Mohammad Esmaeel Ebrahimi Chaharom, Fatemeh Pournaghi Azar, Narmin Mohammadi, Rezvan Nasiri
Background. This study was undertaken to evaluate the repair bond strength of lithium disilicate glass ceramic to a silorane-based composite resin after surface preparation with Nd:YAG and Er,Cr:YSGG lasers. Methods. A total of 102 lithium disilicate glass ceramic samples (IPS e.max Press), measuring 5 mm in diameter and 4 mm in thickness, were randomly assigned to 6 groups (n=17): group 1, no surface preparation (control); group 2, acid etching with 9.5% hydrofluoric acid (HF); group 3, surface preparation with 4...
2018: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/29717903/bactericidal-effect-of-various-laser-irradiation-systems-on-enterococcus-faecalis-biofilms-in-dentinal-tubules-a-confocal-laser-scanning-microscopy-study
#2
Xiaoli Wang, Xiaogang Cheng, Xin Liu, Zhihua Wang, Juan Wang, Cuihong Guo, Yaqing Zhang, Wenxi He
OBJECTIVE: The aim of this study was to compare the bactericidal effect of various laser irradiation systems on Enterococcus faecalis biofilms in dentinal tubules by using a novel dentin infection model and confocal laser scanning microscopy (CLSM). BACKGROUND DATA: Laser-activated irrigations have been proposed as an adjuvant to conventional protocols of root canal treatment to enhance the smear layer removal, which is a promising protocol for root canal disinfection...
May 2, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29707010/extrusion-of-irrigant-in-open-apex-teeth-with-periapical-lesions-following-laser-activated-irrigation-and-passive-ultrasonic-irrigation
#3
Harry Huiz Peeters, Ketut Suardita, Latief Mooduto, Norbert Gutknecht
Introduction: Sodium hypochlorite (NaOCl) irrigation is critical for the success of endodontic treatment and several agitation techniques have been developed to improve the efficacy of this irrigation. Using a combination of contrast medium and radiographic examination, this study evaluated NaOCl extrusion during agitation of irrigant. Development of pressure, which may result in apical extrusion of the irrigant, has been described during laser-activated irrigation (LAI) and passive ultrasonic irrigation (PUI)...
2018: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29691557/-clinical-observation-on-different-kinds-of-laser-on-60-molars-with-abrasion
#4
Hai-Yan Sun, Li-Hong Qiu, Di Yang
PURPOSE: To evaluate the clinical effect of different kinds of laser on 60 molars with abrasion. METHODS: Thirty patients with 60 abrasive molars were selected according to the inclusion criteria. Molars and premolars were divided into 2 groups randomly. Teeth in the experimental group were treated with Er,Cr:YSGG laser combined with AdperTM Easy One, while teeth in the control group were treated with Nd:YAG laser combined with AdperTM Easy One, composite resin Z350 was selected to restore the defect...
December 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29683407/effect-of-er-cr-ysgg-laser-and-ascorbic-acid-on-the-bond-strength-and-microleakage-of-bleached-enamel-surface
#5
Fahad Alkhudhairy, Abdulaziz AlKheraif, Mohammed Bin-Shuwaish, Sulieman Al-Johany, Mustafa Naseem, Fahim Vohra
BACKGROUND: The available evidence of Er,Cr:YSGG lasers on bleached enamel is limited and controversial. It is assumed that Er,Cr:YSGG laser will be effective in reversing the effect of bleaching on adhesive bond integrity of enamel to resin composite. OBJECTIVE: The study aimed to evaluate the efficacy of Er,Cr:YSGG laser on bond strength and microleakage of bleached enamel. MATERIALS AND METHODS: From the 80 samples, 60 samples were bleached (40% hydrogen peroxide) and divided into three subgroups...
April 23, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29652569/efficacy-of-various-pretreatments-on-the-bond-strength-of-denture-teeth-to-denture-base-resins
#6
Fatih Sari, Ozlem Ustun, Omer Kirmali
OBJECTIVE: This in vitro study evaluated the shear bond strength (SBS) of heat-cured denture base resin (PMMA) to acrylic resin teeth treated with different pretreatments, especially laser irradiation of different powers (1-4 W). MATERIALS AND METHODS: The acrylic resin teeth were separated into seven groups (n = 10) for the following different pretreatments: control group (no surface treatment) (G1), grinding with a tungsten carbide bur (G2), sandblasting (G3), and erbium, chromium: yttrium, scandium, gallium, garnet (Er,Cr:YSGG) laser irradiation at 1 W, 2 W, 3 W, 4 W output powers in (G4-7), respectively...
April 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29536538/effective-removal-of-calcified-deposits-on-microstructured-titanium-fixture-surfaces-of-dental-implants-with-erbium-lasers
#7
Toru Takagi, Akira Aoki, Shizuko Ichinose, Yoichi Taniguchi, Noriko Tachikawa, Takeshi Shinoki, Walter Meinzer, Anton Sculean, Yuichi Izumi
BACKGROUND: Recently, the occurrence of peri-implantitis has been increasing. However, a suitable method to debride the contaminated surface of titanium implants has not been established. The aim of this study was to investigate the morphological changes of the microstructured fixture surface after erbium laser irradiation, and to clarify the effects of the erbium lasers when used to remove calcified deposits from implant fixture surfaces. METHODS: In experiment 1, sandblasted, large grit, acid etched surface implants were treated with Er:YAG laser or Er,Cr:YSGG laser at 30-60 mJ/pulse and 20 Hz with water spray...
March 13, 2018: Journal of Periodontology
https://www.readbyqxmd.com/read/29501794/effect-of-the-application-of-surface-treatments-before-and-after-sintering-on-the-flexural-strength-phase-transformation-and-surface-topography-of-zirconia
#8
Sevcan Kurtulmus-Yilmaz, Huseyin Aktore
OBJECTIVES: To evaluate the effects of airborne-particle abrasion (APA) and Er,Cr:YSGG laser irradiation on 4-point-flexural strength, phase transformation and morphologic changes of zirconia ceramics treated at pre-sintered or post-sintered stage. METHODS: Three hundred and forty-two bar shaped zirconia specimens were milled with different sizes according to the flexural strength test (n = 10), X-ray diffraction (XRD) (n = 4) and field emission scanning electron microscope (FE-SEM) (n = 4) analyses...
May 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29486355/efficacy-of-er-cr-ysgg-laser-therapy-at-different-frequency-and-power-levels-on-bond-integrity-of-composite-to-bleached-enamel
#9
Fahad Alkhudhairy, Mustafa Naseem, Mohammed Bin-Shuwaish, Fahim Vohra
The aim was to evaluate the influence of Er, Cr: YSGG laser therapy at different pulse frequency and power levels on the bond strength and microleakage of bleached enamel. One hundred samples were bleached using in-office whitening agent. Bleached samples were divided into six subgroups, four subgroups was based on laser application parameters (pulse frequency 50 and 30 Hz; Power 4.5 & 6 W) one subgroup was treated with bleach (B) and the other was control (no bleaching, no laser application). All specimens including control were etched with 37% phosphoric acid and composite build-ups were performed...
February 24, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29465059/efficiency-of-lasers-and-a-desensitizer-agent-on-dentin-hypersensitivity-treatment-a-clinical-study
#10
K Ozlem, G M Esad, A Ayse, U Aslihan
Aim: The aim of this clinical study was to determine and compare the efficiency of the glutaraldehyde-containing agent (GCA), Nd:YAG, Er,Cr:YSGG lasers, and the combination of them on the dentin hypersensitivity (DH) treatment. Subjects and Methods: This study was performed with the participation of 17 healthy adult patients having 100 teeth with DH; the patients were randomly divided into five groups according to the treatment protocol: (1) application of GCA on sensitive teeth, (2) Nd:YAG laser (1 W/cm2 , 10 Hz) irradiation on sensitive teeth, (3) application of GCA on sensitive teeth and then Nd:YAG laser irradiation, (4) Er,Cr:YSGG laser (0...
February 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29451989/all-done-procedure-by-laser-in-free-gingival-graft-treatment-a-case-series-study
#11
Reza Fekrazad, Nasim Chiniforush, Katayoun Kalhori
AIM: This case series study evaluated the application of Er;Cr:YSGG laser for a free gingival graft procedure and the effect of low level laser therapy on post surgical pain and wound healing. CASES: 6 cases with mucogingival problems needing free gingival grafts were selected. First, the recipient site was anesthetized and de-epithelialization was done with a Er;Cr:YSGG laser. After tracing the palatal donor site with the laser, the graft was harvested. For root modification of the recipient tooth, conditioning of the dentin was done by the same laser...
February 16, 2018: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/29434431/venous-malformations-management-by-er-cr-ysgg-laser-an-alternative-approach
#12
Vinod Chandel, Babita Jangra, Nishant Khurana, Amit Garg, Devashish
Background and Aim: Venous malformations (VMs) are slow-flow vascular anomalies composed of ectatic venous channels. Its management with Er,Cr:YSGG laser has been proven effective. In the present case a teenage patient reported with a bluish lesion, soft inconsistency on the dorsal aspect of tongue. The lesion was removed with Er, Cr: YSGG laser (2780 nm) with minimal anaesthetic infiltration. Results: Patient reported no postoperative pain. Clinical follow up after three months showed excellent results and uneventful healing...
December 31, 2017: Laser Therapy
https://www.readbyqxmd.com/read/29422468/surface-characterization-and-cell-adhesion-of-different-zirconia-treatments-an-in-vitro-study
#13
Wadih Nassif, Mohamad Rifai
AIM: The aim of this study was to characterize the surface of zirconia subjected to different treatments and evaluate its effect on cell adhesion and proliferation. MATERIALS AND METHODS: A total of 80 zirconia disks were divided into four groups (n = 20) according to the surface treatments used: group I: as-sintered (AS), no surface treatment applied; group II: abrasion treatment applied using Rocatec (ROC; 3M ESPE) system with silica-coated alumina powder of grit size 110 μm; group III: erbium, chromium:yttrium, scandium, gallium, garnet (Er, Cr:YSGG) laser (LAS; BIOLASE) was used at a frequency of 20 Hz and output power of 3 W; and group IV: specimens were subjected to the selective infiltration etching (SIE) technique...
February 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29411731/bonding-strength-of-universal-adhesives-to-er-cr-ysgg-laser-irradiated-dentin
#14
M K Ayar, F Erdermir
OBJECTIVES: Universal adhesives have been recently introduced for use as self-etch or etch-and-rinse adhesives depending on the dental substrate and clinical condition. However, their bonding effectiveness to laser-irradiated dentin is still not well known. Therefore, the aim of this study was to compare the shear bond strength (SBS) of two universal adhesives (Single Bond Universal, Nova Compo-B Plus) applied following laser-etching with SBS of the same adhesives applied in self-etch and acid-etch modes, respectively...
January 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29399313/effects-of-erbium-family-laser-on-shear-bond-strength-of-composite-to-dentin-after-internal-bleaching
#15
Nazanin Kiomarsi, Yasaman Arjmand, Mohammad Javad Kharrazi Fard, Nasim Chiniforush
Introduction: The aim of this study was to assess the effect of surface treatment with erbium: yttrium-aluminum-garnet (Er:YAG) and erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) lasers on shear bond strength of composite resin to recently bleached dentin. Methods: In this study, 40 extracted human premolars were selected. The teeth were cut 4 mm apical to the cusp tip and were randomly divided into four groups (n=10 in each group) for shear bond strength testing. For bleaching, 35% hydrogen peroxide (H2 o2 ) gel (Opalescence Endo, Ultradent, South Jordan, UT, USA) was applied to dentin surfaces of all specimens for 10 days...
2018: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29399310/bond-strength-of-fiber-posts-to-composite-core-effect-of-surface-treatment-with-er-cr-ysgg-laser-and-thermocycling
#16
Sedighe Sadat Hashemikamangar, Masoome Hasanitabatabaee, Saman Kalantari, Mehrzad Gholampourdehaky, Ladan Ranjbaromrani, Hooman Ebrahimi
Introduction: This study aimed to determine the bond strength of fiber post to composite core following surface treatment with Er,Cr:YSGG laser at different powers and sandblasting with and without thermocycling. Methods: In this experimental study, 30 fiber posts (Glassix, Nordin, Switzerland) were randomly divided into 5 groups of sandblasting, no treatment and laser irradiation at 1, 1.5 and 2 W powers. Following composite filling and mounting, 1-mm thick sections were made for pushout bond strength testing...
2018: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29380483/effect-of-different-laser-treatments-on-the-bond-strength-of-intracanal-fiber-posts-cemented-with-a-self-adhesive-resin-cement
#17
Marija Šimundić Munitić, Ivona Bago, Karl Glockner, Lumnije Kqiku, Dragana Gabrić, Ivica Anić
PURPOSE: To evaluate the influence of laser-activated irrigation by Er:YAG and Er:YSGG (LAI) protocols and Nd:YAG laser irradiation on the bond strength of self-adhesively cemented fiber posts to root canal dentine. MATERIALS AND METHODS: The study sample consisted of 84 human single-rooted permanent teeth instrumented with ProTaper Next technique. After obturation, post space preparations were created for fiber-reinforced composite posts. The prepared specimens were divided according to the laser treatment of the post space preparations: group 1: LAI (Er:YAG) + saline solution (pulse energy: 20 mJ, repetition rate: 15 Hz); group 2: LAI (Er:YAG) + QMiX solution (pulse energy: 20 mJ, repetition rate: 15 Hz); group 3: LAI (Er,Cr:YSGG) + saline solution (pulse energy: 62...
January 29, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29327089/comparative-efficacy-of-er-cr-ysgg-and-er-yag-lasers-for-etching-of-composite-for-orthodontic-bracket-bonding
#18
Amir Hossein Mirhashemi, Nasim Chiniforush, Nastaran Sharifi, Amir Mehdi Hosseini
Several techniques have been proposed to obtain a durable bond, and the efficacy of these techniques is assessed by measuring parameters such as bond strength. Laser has provided a bond strength as high as that of acid etching in vitro and has simpler use with shorter clinical time compared to acid etching. This study aimed to compare the efficacy of Er:YAG and Er,Cr:YSGG lasers for etching and bonding of composite to orthodontic brackets. No previous study has evaluated the effect of these particular types of laser...
January 11, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29323782/the-effect-of-surface-treatments-on-the-mechanical-and-optical-behaviors-of-cad-cam-restorative-materials
#19
Sevcan Kurtulmus-Yilmaz, Esra Cengiz, Salim Ongun, Izgen Karakaya
PURPOSE: To evaluate the effect of different surface treatments on mechanical and optical properties of lithium disilicate ceramic (IPS e.max CAD), 2 resin nanoceramics (Lava Ultimate, GC Cerasmart), and polymer-infiltrated ceramic network material (Vita Enamic). MATERIALS AND METHODS: CAD/CAM blocks were sectioned into 4 × 1 × 14 mm3 bars for three-point bending test and 1 × 8 × 8 mm3 square specimens were obtained for color and translucency measurements. Bar-shaped and square specimens were divided into five groups according to the surface treatment method as: control (no treatment), hydrofluoric acid etching, airborne-particle abrasion, 2 W and 3 W Er,Cr:YSGG laser irradiation (n = 10)...
January 11, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29296111/effect-of-surface-treatment-on-enamel-cracks-after-orthodontic-bracket-debonding-er-cr-ysgg-laser-etching-versus-acid-etching
#20
Hassanali Ghaffari, Amirhossein Mirhashemi, Tahereh Baherimoghadam, Amir Azmi, Reza Rasooli
Objectives: This study sought to compare enamel cracks after orthodontic bracket debonding in the surfaces prepared with erbium, chromium: yttrium-scandium-galliumgarnet (Er,Cr:YSGG) laser and the conventional acid-etching technique. Materials and Methods: This in-vitro experimental study was conducted on 60 sound human premolars extracted for orthodontic purposes. The teeth were randomly divided into two groups (n=30). The teeth in group A were etched with 37% phosphoric acid gel, while the teeth in group B were subjected to Er,Cr:YSGG laser irradiation (gold handpiece, MZ8 tip, 50Hz, 4...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
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