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https://www.readbyqxmd.com/read/29103440/effects-of-low-level-laser-irradiation-on-the-rate-of-orthodontic-tooth-movement-and-associated-pain-with-self-ligating-brackets
#1
Irfan Qamruddin, Mohammad Khursheed Alam, Verda Mahroof, Mubassar Fida, Mohd Fadhli Khamis, Adam Husein
INTRODUCTION: The aim of this study was to evaluate the effect of low-level laser irradiation applied at 3-week intervals on orthodontic tooth movement and pain associated with orthodontic tooth movement using self-ligating brackets. METHODS: Twenty-two patients (11 male, 11 female; mean age, 19.8 ± 3.1 years) with Angle Class II Division 1 malocclusion were recruited for this split-mouth clinical trial; they required extraction of maxillary first premolars bilaterally...
November 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29099682/er-cr-ysgg-laser-energy-delivery-pulse-and-power-effects-on-enamel-surface-and-erosive-resistance
#2
Renan Mota de Oliveira, Vinicius Matsuzaki de Souza, Camila Machado Esteves, Ynara Bosco de Oliveira Lima-Arsati, Alessandra Cassoni, José Augusto Rodrigues, Aldo Brugnera Junior
BACKGROUND: High power lasers have been suggested as a useful tool for dental caries and erosion prevention due to the increase of enamel acid resistance. OBJECTIVE: to evaluate the effect of Er,Cr:YSGG (erbium,chromium:yttrium, scandium, gallium, garnet) laser irradiation pulse frequency and power on enamel surface and acid erosion resistance. METHODS: By combining pulse frequency (5-75 Hz) and power settings (0.10-1.00 W), 20 irradiated groups and one nonirradiated control group were tested...
November 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28890621/soft-tissue-applications-of-er-cr-ysgg-laser-in-pediatric-dentistry
#3
Gyanendra Kumar, Ferah Rehman, Vivek Chaturvedy
Soft tissue laser, such as diode and Nd:YAG lasers were initially used in soft tissue lesions because of its increased success rate. It was because of the fact that these lasers were well-absorbed by chromophores, such as hemoglobin and melanin which are found abundant in the oral mucosa. The introduction of erbium family in 1990 comprising the Er:YAG and Er,Cr:YSGG lasers made the hard tissue laser a boon for dentistry. Erbium, chromium-doped yttrium, scandium, gallium and garnet (Er,Cr:YSGG) was introduced in 1997 for the surgical needs of clinical dentistry in general practice...
April 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28765674/a-comparative-evaluation-of-retention-of-pit-and-fissure-sealants-placed-with-conventional-acid-etching-and-er-cr-ysgg-laser-etching-a-randomised-controlled-trial
#4
Gyanendra Kumar, Jatinder Kaur Dhillon, Ferah Rehman
Aim: The aim of this study was to compare the retention rates of sealant placed either with conventional acid etching or Er,Cr:YSGG laser pretreatment of enamel surface. Materials and methods: This is a prospective, single blind randomised controlled clinical trial enrolling 200 permanent first molars in 50 patients, aged 6-12 years for sealant placement. Study followed split mouth design where each side of the arch was randomly allocated to the two treatment group. Group A(Acid etch group): 37 % phosphoric acid (Scotchbond, 3M ESPE, Seefeld, Germany) was applied for 15 seconds, rinsed with water for 20 seconds and then air-dried using air spray...
December 30, 2016: Laser Therapy
https://www.readbyqxmd.com/read/28765671/evaluation-of-the-diode-laser-810nm-980-nm-on-color-change-of-teeth-after-external-bleaching
#5
Nazanin Kiomars, Pouneh Azarpour, Mansooreh Mirzaei, Sedighe Sadat Hashemi Kamangar, Mohammad Javad Kharazifard, Nasim Chiniforush
Subject and aim: The aim of this study was to evaluate the efficiency of diode laser-activated bleaching systems for color change of teeth. Materials & Methods: 40 premolars with intact enamel surfaces were selected for five external bleaching protocols (n=8). Two different wavelengths of diode laser (810 and 980 nm) with two different hydrogen peroxide concentrations (30% and 46%) were selected for laser bleaching. Group 1 received bleaching (Heydent- Germany) with a 810 nm diode laser; Group 2 received bleaching (Heydent- Germany) with a 980 nm diode laser; Group 3 received bleaching (laser white*20- Biolase) with a 810 nm diode laser; Group 4 received bleaching (laser white*20- Biolase) with a 980 nm diode laser, with an output power of 1...
December 30, 2016: Laser Therapy
https://www.readbyqxmd.com/read/28218616/droplet-lasers-a-review-of-current-progress
#6
D McGloin
It is perhaps surprising that something as fragile as a microscopic droplet could possibly form a laser. In this article we will review some of the underpinning physics as to how this might be possible, and then examine the state of the art in the field. The technology to create and manipulate droplets will be examined, as will the different classes of droplet lasers. We discuss the rapidly developing fields of droplet biolasers, liquid crystal laser droplets and explore how droplet lasers could give rise to new bio and chemical sensing and analysis...
May 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28098320/versatile-tissue-lasers-based-on-high-q-fabry-p%C3%A3-rot-microcavities
#7
Yu-Cheng Chen, Qiushu Chen, Tingting Zhang, Wenjie Wang, Xudong Fan
Biolasers are an emerging technology for next generation biochemical detection and clinical applications. Progress has recently been made to achieve lasing from biomolecules and single living cells. Tissues, which consist of cells embedded in an extracellular matrix, mimic more closely the actual complex biological environment in a living body and therefore are of more practical significance. Here, we developed a highly versatile tissue laser platform, in which tissues stained with fluorophores are sandwiched in a high-Q Fabry-Pérot microcavity...
January 31, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/27960053/starch-based-biological-microlasers
#8
Yanhui Wei, Xianqing Lin, Cong Wei, Wei Zhang, Yongli Yan, Yong Sheng Zhao
Microlasers with good biocompatibility are of great significance to the detection of tiny changes in biological systems. Most current biolasers were realized through the introduction of biomaterials into various external resonators, resulting in an increase of difficulties in application. Here, we used starch as the host to build dye@starch microlasers by encapsulating guest organic laser dye into the interhelical structure of starch granules. The as-prepared dye@starch system with high transparency and ultrasmooth spherical surface functions as an efficient whispering gallery mode resonator for low threshold lasing...
December 19, 2016: ACS Nano
https://www.readbyqxmd.com/read/27721563/comparison-of-shear-bond-strength-of-reattached-incisor-fragment-using-er-cr-ysgg-laser-etching-and-conventional-acid-etching-an-in-vitro-study
#9
Ferah Rehman, Gyanendra Kumar, Mridula Goswami, Jatinder Kaur Dhillon
Aim: The aim of this invitro study is to evaluate the shear bond strength of reattached fractured incisor fragments using Er,Cr:YSGG laser and conventional acid etching without additional tooth preparation. Materials and methods: Forty extracted human teeth were divided in two groups of 20 each (Groups A and B). In Group A, fractured surface was treated by an Er, Cr: YSGG laser system (Waterlase MD, Biolase Technology Inc., San Clemente, CA, USA) operating at a wavelength of 2,780 nm and frequency of 20 Hz...
June 29, 2016: Laser Therapy
https://www.readbyqxmd.com/read/27437362/effect-of-diode-laser-on-bacteria-beyond-the-apex-in-relation-to-the-size-of-the-apical-preparation-an-in-vitro-study
#10
Sistla Venkata Jyotsna, Raja Vatsavai Chakradhar Raju, Jaya Prakash Patil, Thakur Veerandar Singh, Neha Bhutani, Shekar Kamishetty, Kiran Ghatole
INTRODUCTION: Microorganisms causing periapical infection are usually difficult to eradicate after conventional endodontic treatment or even in retreatment resulting in poor outcomes. So the purpose of the study was to assess whether disinfection of root canal with laser had any effect on bacteria in the periapex region. AIM: The aim of the present study was to evaluate the effects of a diode laser when activated in root canals with varying apical diameters, on the bacteria present beyond the apex of the teeth...
May 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27281966/biolase-unveils-new-learning-center
#11
(no author information available yet)
No abstract text is available yet for this article.
May 2016: Dentistry Today
https://www.readbyqxmd.com/read/26538930/influence-of-erbium-chromium-doped-yttrium-scandium-gallium-garnet-laser-etching-and-traditional-etching-systems-on-depth-of-resin-penetration-in-enamel-a-confocal-laser-scanning-electron-microscope-study
#12
Vishal Vijayan, K Rajasigamani, K Karthik, Sasidharan Maroli, Jitesh Chakkarayan, Mohamed Haris
OBJECTIVE: This study was performed to assess the resin tag length penetration in enamel surface after bonding of brackets to identify which system was most efficient. METHODOLOGY: Our study was based on a more robust confocal microscopy for visualizing the resin tags in enamel. Totally, 100 extracted human first and second premolars have been selected for this study and were randomly divided into ten groups of 10 teeth each. In Group 1, the buccal enamel surface was etched with 37% phosphoric acid (3M ESPE), Group 2 with 37% phosphoric (Ultradent)...
August 2015: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/26526961/intra-pulpal-temperature-rise-of-different-tooth-types-during-dental-bleaching-supported-by-an-er-cr-ysgg-laser-a-pilot-study
#13
D Strakas, K Tolidis, E Koliniotou-Koumpia, L Vanweersch, R Franzen, N Gutknecht
The purpose of this pilot in vitro study was to evaluate the temperature increase in the pulp chamber of the teeth, during Er,Cr:YSGG bleaching, as well as to show which teeth are the most susceptible in terms of pulp temperature increase during laser-activated bleaching treatment. Although Er:YAG studies have been published on this subject, it is the first time Er,Cr:YSGG wavelength is tested. Fifteen teeth were tested--3 each of the following--(maxillary central incisors, lateral incisors, canines, premolars and mandibular incisors)...
January 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/26340579/effect-of-the-lasers-used-in-periodontal-therapy-on-the-surfaces-of-restorative-materials
#14
Mükerrem Hatipoğlu, Çağatay Barutcigil, Osman Tolga Harorlı, Bülent Ulug
The present study aimed to reveal potential damage of the lasers, which are used as an alternative to manual instruments in periodontal therapy, might cause to the surface of restorative materials. Four different restorative materials were used: a glass-ionomer cement (GIC), a flowable composite (FC), a universal composite (UC) and an amalgam. Ten cylindrical samples (8 mm × 2 mm) were prepared for each restorative material. Two laser systems were used in subgingival curettage mode; an 940 nm diode laser (Epic Biolase, Irvine, CA) and an Er,Cr:YSGG laser (Waterlase iPlus, Biolase, Irvine, CA)...
May 2016: Scanning
https://www.readbyqxmd.com/read/26238255/protein-based-three-dimensional-whispering-gallery-mode-micro-lasers-with-stimulus-responsiveness
#15
Yun-Lu Sun, Zhi-Shan Hou, Si-Ming Sun, Bo-Yuan Zheng, Jin-Feng Ku, Wen-Fei Dong, Qi-Dai Chen, Hong-Bo Sun
For the first time, proteins, a promising biocompatible and functionality-designable biomacromolecule material, acted as the host material to construct three-dimensional (3D) whispering-gallery-mode (WGM) microlasers by multiphoton femtosecond laser direct writing (FsLDW). Protein/Rhodamine B (RhB) composite biopolymer was used as optical gain medium innovatively. By adopting high-viscosity aqueous protein ink and optimized scanning mode, protein-based WGM microlasers were customized with exquisite true 3D geometry and smooth morphology...
2015: Scientific Reports
https://www.readbyqxmd.com/read/25997186/biolase-providing-clinicians-a-solutions-based-approach-to-dental-lasers
#16
(no author information available yet)
No abstract text is available yet for this article.
January 2015: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/25879057/laser-supported-reduction-of-specific-microorganisms-in-the-periodontal-pocket-with-the-aid-of-an-er-cr-ysgg-laser-a-pilot-study
#17
N Gutknecht, C Van Betteray, S Ozturan, L Vanweersch, R Franzen
OBJECTIVE: The aim of this study was to evaluate the effectiveness of a radial firing tip of an Er,Cr:YSGG laser as an adjunct to a nonsurgical periodontal treatment. METHODS: Twelve patients with chronic or aggressive periodontitis were treated by conventional periodontal treatment using ultrasonic devices and hand instruments and, additionally, in two quadrants with an Er,Cr:YSGG laser. A new radial firing tip (RFPT 14-5, Biolase) was used with 1.5 W, 30 Hz, 11% air, 20% water, and pulse duration 140 μs...
2015: TheScientificWorldJournal
https://www.readbyqxmd.com/read/25821374/a-comparative-evaluation-of-the-effect-of-dentin-desensitizers-on-the-retention-of-complete-cast-metal-crowns
#18
Saili M Chandavarkar, Sabita M Ram
CONTEXT: Desensitizers are used to reduce dentin hypersensitivity. They affect the surface texture of prepared dentin and may alter the retention of fixed restorations. AIMS: The aim was to evaluate the effect of dentin desensitizers on the retention of complete cast metal crowns luted with glass ionomer cement. SUBJECTS AND METHODS: Fifty freshly extracted human premolars were subjected to standardized tooth preparation (20° total convergence, 4 mm axial height) with a computer numerically controlled machine...
March 2015: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/25517588/microhardness-evaluation-of-enamel-adjacent-to-an-improved-gic-sealant-after-different-enamel-pre-treatment-procedures
#19
COMPARATIVE STUDY
E Haznedaroglu, S Sozkes, A R Mentes
AIM: This in vitro study was carried out to evaluate the microhardness of enamel adjacent to a glass ionomer cement (GIC) with high fluoride content used as a sealant (Fuji Triage, GC Corp., Japan) after laser, bur or air abrasion treatment procedures. MATERIALS AND METHODS: HASH(0x408e210) STUDY DESIGN: 200 freshly extracted non-carious human molars were divided into 10 experimental groups according to the enamel pre-treatment method: A air abrasion (Mach 4...
December 2014: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/25125842/comparison-of-shear-bond-strength-of-composite-resin-to-enamel-surface-with-laser-etching-versus-acid-etching-an-in-vitro-evaluation
#20
Upendra A Hoshing, Suvarna Patil, Ashish Medha, Siddhesh Dattatray Bandekar
INTRODUCTION: The aim of the study is in vitro evaluation of the shear bond strength of composite resin bonded to enamel which is pretreated using acid etchant and Er,Cr:Ysgg. MATERIALS AND METHODS: 40 extracted human teeth were divided in two groups of 20 each (Groups A and B). In Group A, prepared surface of enamel was etched using 37% phosphoric acid (Scotchbond, 3M). In Group B, enamel was surface treated by a an Er, Cr: YSGG laser system (Waterlase MD, Biolase Technology Inc...
July 2014: Journal of Conservative Dentistry: JCD
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