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Journal of Lasers in Medical Sciences

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https://www.readbyqxmd.com/read/28144444/the-versatility-of-980-nm-diode-laser-in-dentistry-a-case-series
#1
Nahid Derikvand, Zahra Chinipardaz, Sara Ghasemi, Nasim Chiniforush
Introduction: Laser surgery has been considered a popular alternative over conventional modalities in dentistry during the last few years. Among different types of lasers, diode lasers have gained special attention in oral soft tissue surgery. Case Reports: Five patients were referred to a private office. After careful evaluation of medical history and oral examination, oral diagnosis and treatment plan of each patient was established as follows: (1) A 21-year-old female with ankyloglossia (tongue-tie); (2) A 65-year-old female with a poor denture fit needing vestibuloplasty and frenectomy; (3) A 10-year-old male patient with pigmented gingiva in mandible and maxilla; (4) A 14-year-old female needing exposure of maxillary right canine for bracket bonding; and (5) A 25-year-old female patient who has a gingival maxillary frenum with a nodule...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144443/comparison-of-carbon-dioxide-laser-with-surgical-blade-for-removal-of-epulis-fissuratum-a-randomized-clinical-trial
#2
Abbas Karimi, Farhad Sobouti, Sara Torabi, Ali Bakhshandehfard, Armaghan Amirian, Mahsa Shariati, Ehsan Morshedi, Maryam Barati
Introduction: Epulis fissuratum is often formed as a result of a poor fitting denture. The conventional treatment for this fibrous hyperplastic tissue is to excise it using a scalpel and to close the wound by a continuous or an interrupted suture. The increased utilization of lasers in dentistry also includes the utilization of carbon dioxide (CO2) lasers in place of surgical scalpels in soft tissue surgeries. The objective of this study is to assess the feasibility of utilizing CO2 laser in place of scalpel in surgical treatment of epulis fissuratum...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144442/a-comparative-study-of-enamel-surface-roughness-after-bleaching-with-diode-laser-and-nd-yag-laser
#3
Mansoreh Mirzaie, Esmaiel Yassini, Saber Ganji, Zohreh Moradi, Nasim Chiniforush
Introduction: Bleaching process can affect surface roughness of enamel, which is a vital factor in esthetic and resistance of tooth. The aim of this study was to compare surface roughness of enamel in teeth bleached using Diode and Neodymium-Doped Yttrium Aluminium Garnet (Nd: YAG) lasers with those bleached using conventional method. Methods: In this study, 75 anterior human teeth from upper and lower jaws (These teeth extracted because of periodontal disease) were randomly divided into 5 groups. Group 1: Laser white gel (Biolase, USA) with 45% hydrogen peroxide concentration and GaAlAs Diode laser (CHEESE(TM), GIGAA, China), group 2: Heydent gel (JW, Germany) with 30% Hydrogen peroxide concentration and Diode laser, group 3: Laser white gel and Nd:YAG laser (FIDELIS(TM), Fotona, Slovenia), group 4: Heydent gel and Nd:YAG laser and group 5: The Iranian gel Kimia (Iran) with 35% hydrogen peroxide concentration were used...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144441/prevention-of-enamel-adjacent-to-bracket-demineralization-following-carbon-dioxide-laser-radiation-and-titanium-tetra-fluoride-solution-treatment-an-in-vitro-study
#4
Amir Hossein Mirhashemi, Sina Hakimi, Mohammad Sadegh Ahmad Akhoundi, Nasim Chiniforush
Introduction: The aim of this study was to assess the caries-preventive potential of carbon dioxide (CO2) laser application in conjunction with the use of titanium tetra fluoride solution on the enamel adjacent to bracket. Methods: Seventy-five freshly extracted bovine incisors were used. In order to attach the brackets, the area of examination was covered with adhesive tape to limit acid etching of the entire enamel surface. Metal orthodontic brackets for upper central were bonded to all the teeth following the manufacturer's instruction...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144440/comparison-of-the-amount-of-temperature-rise-in-the-pulp-chamber-of-teeth-treated-with-qth-second-and-third-generation-led-light-curing-units-an-in-vitro-study
#5
Rajesh Harivadanbhai Mahant, Shraddha Chokshi, Rupal Vaidya, Pruthvi Patel, Asima Vora, Priyanka Mahant
Introduction: This in vitro study was designed to measure and compare the amount of temperature rise in the pulp chamber of the teeth exposed to different light curing units (LCU), which are being used for curing composite restorations. Methods: The study was performed in two settings; first, an in vitro and second was mimicking an in vivo situation. In the first setup of the study, three groups were formed according to the respective three light curing sources. i.e. quartz-tungsten-halogen (QTH) unit and two light-emitting diode (LED) units (second and third generations)...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144439/the-effect-of-low-level-laser-therapy-on-direct-pulp-capping-in-dogs
#6
Maryam Bidar, Siavash Moushekhian, Maryam Gharechahi, Ali Talati, Farzaneh Ahrari, Maryam Bojarpour
Introduction: The aim of this study was to determine the histologic effect of low level laser therapy (LLLT) with or without the use of mineral trioxide aggregate (MTA) on exposed pulp tissues of dogs. Methods: Twenty-five premolar teeth in three healthy mature dogs were randomly divided into five groups. In group 1, the pulp tissue was capped with MTA. In groups 2 and 3, before capping with MTA, the exposure site was irradiated by low power lasers at 630 nm (20 mW, 150 seconds, 7.5 J/cm(2)) and 810 nm (peak power 80 W, average power 50 mW, 1500 Hz, 50 seconds, 6...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144438/assessment-of-microleakage-of-a-composite-resin-restoration-in-primary-teeth-following-class-iii-cavity-preparation-using-er-cr-ysgg-laser-an-in-vitro-study
#7
Priya Subramaniam, Annu Pandey
Introduction: Marginal seal integrity is important for a successful adhesive dental restoration. Alterations caused by laser irradiation in the enamel and dentin surface can affect the marginal integrity of adhesive restorations. The aim of this study was to evaluate the microleakage of a composite resin restoration in primary teeth following laser irradiation of enamel and dentin. Methods: Forty freshly extracted sound human primary maxillary and mandibular anterior teeth were used in this study. The teeth were randomly divided into two groups (I and II), with 20 teeth in each...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144437/an-in-vitro-comparison-of-the-bond-strength-of-composite-to-superficial-and-deep-dentin-treated-with-er-yag-laser-irradiation-or-acid-etching
#8
Homayoon Alaghehmand, Fatemeh Nezhad Nasrollah, Hanieh Nokhbatolfoghahaei, Reza Fekrazad
Introduction: The aim of this study was to compare the micro-shear bond strength of composite resin on superficial and deep dentin after conditioning with phosphoric acid and Erbium-Doped Yttrium Aluminum Garnet (Er:YAG) laser. Methods: Thirty human molars were selected, roots were removed and crowns were bisected to provide a total of 60 half-crowns. Specimens were ground to expose superficial and deep dentin. Samples were assigned to six groups: (1) AS (acid etching of superficial dentin); (2) AD (acid etching of deep dentin); (3) LS (Er:YAG laser irradiation on superficial dentin); (4) LD (Er:YAG laser irradiation on deep dentin); (5) LAS (Er:YAG laser irradiation on superficial dentin followed by acid etching); (6) LAD (Er:YAG laser irradiation on deep dentin followed by acid etching) The adhesive protocol was performed...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144436/algorithm-for-analyzing-thermal-images-of-laser-irradiated-human-skin
#9
Johnny Toumi, Fawaz Saiof, Wesam Bachir
Introduction: Tracking temporal changes of temperature during laser skin treatment plays an important role in improving the process of laser skin treatment itself. There are a number of methods to analyze temperature's temporal dependency during laser skin treatment; some of those methods depend on imaging the skin with thermal cameras. However, the use of thermal cameras exhibits specific problems, including the ability to track laser-skin interaction spot. This paper is dedicated to solve that problem using digital image processing program coded with Matlab...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144435/evaluation-of-effective-transmission-of-light-through-alveolar-bone-a-preliminary-study
#10
Monalisa Jacob Guiselini, Alessandro Melo Deana, Marcelo Betti Mascaro, Aquel Agnelli Mesquita-Ferrari, Ana Carolina Costa da Mota, Sandra Kalil Bussadori, Cristiane Miranda França, Kristianne Porta Santos Fernandes
Introduction: The aim of the present study was to determine the effective transmission of 660 and 780 nm lasers through mandibular and maxillary alveolar bones in the buccal-lingual/ palatal direction. Methods: The laser probe was positioned in direct contact with the surface of the anterior, middle and posterior regions of each bone (5 dried maxillae and 5 mandibles) and the power meter was positioned on the bone wall opposite to the radiated wall for the measure of the remaining energy passing through the bone tissue...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144434/microshear-bond-strength-of-optibond-all-in-one-self-adhesive-agent-to-er-yag-laser-treated-enamel-after-thermocycling-and-water-storage
#11
Shahin Kasraei, Ebrahim Yarmohammadi, Mohammad Vahid Ghazizadeh
Introduction: This study aimed to compare the microshear bond strength of composite to enamel treated with Erbium-Doped Yttrium Aluminum Garnet (Er:YAG) laser using a self-etch one step bonding agent. Methods: Seventy-six enamel surfaces were prepared from 38 sound human third molar teeth. Specimens were randomly divided into four groups of 18. The enamel surface in half the specimens was irradiated with Er:YAG laser. One extra specimen from each group was evaluated under a scanning electron microscope (SEM)...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144433/low-level-laser-action-on-orthodontically-induced-root-resorption-histological-and-histomorphometric-evaluation
#12
Eliziane Cossetin Vasconcelos, Jose Fernando Castanha Henriques, Marinês Vieira Silva Sousa, Rodrigo Cardoso de Oliveira, Alberto Consolaro, Arnaldo Pinzan, Fernanda Pinelli Henriques, Aroline Nemetz Bronfman
Introduction: Studies have been conducted to develop a means of preventing, controlling or reducing orthodontically induced root resorption. Phototherapy has demonstrated effectiveness as an anti-inflammatory and, considering the inflammatory origin of this pathology, this study evaluated the effects of laser on root resorption. Methods: The research was conducted among 54 80-day-old male Wistar rats, with weights of 280 ± 40 g. Phototherapy consisted of a diode laser (Ga-Al-As), calibrated with a wavelength of 808 nm, an output power of 100 mW, 2...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144432/efficacy-of-antimicrobial-photodynamic-therapy-as-an-adjunctive-to-mechanical-debridement-in-the-treatment-of-peri-implant-diseases-a-randomized-controlled-clinical-trial
#13
Mohammad Reza Karimi, Ali Hasani, Salva Khosroshahian
Introduction: The purpose of the present study was to assess the clinical effects of anti-microbial photodynamic therapy (PDT) after closed surface scaling in the treatment of peri-implant diseases. Methods: Ten patients with a total of 15 pairs of dental implants, showing clinical and radiographic signs of peri-implant diseases, were included in this study. In each patient, one implant randomly served as control implant and the other served as test implant. The control implants were treated with closed surface scaling only and the test implants received additionally PDT, using light with a wavelength of 630 nm and intensity of 2000 mw/cm(2) for 120 seconds after application of photosensitizer in peri-implant sulcus...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28144431/influence-of-laser-irradiation-low-intensity-on-reparative-osteogenesis-and-angiogenesis-under-transosseous-osteosynthesis
#14
Yuri Mikhailovich Iryanov
Introduction: The use of non-medicinal facilities of correcting processes for various pathological conditions is one of the most urgent problems of modern medicine. The purpose of the work is to study the efficiency of low-intensive of infrared laser irradiation in promoting reparative osteogenesis and angiogenesis during fracture treatment under transosseous osteosynthesis with a qualitative and quantitative morphological analysis. Methods: A tibial fracture was modeled experimentally in rats from control and experimental groups, then repositioning and fixation of fragments performed...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/27330710/case-report-of-photodynamic-therapy-in-the-treatment-of-dental-caries-on-primary-teeth
#15
Ana Carolina Costa da Mota, Cinthia Raquel Lima Leal, Silvia Olivan, Marcela Leticia Leal Gonçalves, Vanessa Adriana de Oliveira, Marcelo Mendes Pinto, Sandra Kalil Bussadori
INTRODUCTION: The partial removal of dental caries aiming to maintain the integrity of the pulp has been considered the therapy of choice in the treatment of deep carious lesions, as long as certain principles of diagnosis are respected. Dentists are always looking for techniques to remove the decayed tissue with biosafety, what provides more comfort to the patient especially when it comes to children. Photodynamic therapy (PDT) is an antimicrobial treatment. PapacárieMblue is a modification of the regular Papacárie, with a photosensitizer added to it...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/27330709/microbiological-efficacy-of-photodynamic-therapy-as-an-adjunct-to-non-surgical-periodontal-treatment-a-clinical-trial
#16
Mohammadreza Talebi, Rojin Taliee, Masoud Mojahedi, Mansour Meymandi, Maryam Torshabi
INTRODUCTION: The efficiency of routine scaling and root planning is negatively influenced by the tooth anatomy and residual bacteria all possibly affecting the treatment outcomes in future. The present study compared the microbiologic effectiveness of the photodynamic therapy (PDT) as an adjunctive treatment modality for nonsurgical treatment in chronic periodontitis. METHODS: In this randomized controlled clinical trial, 18 chronic periodontitis patients were selected...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/27330708/effects-of-3-hz-and-60-hz-extremely-low-frequency-electromagnetic-fields-on-anxiety-like-behaviors-memory-retention-of-passive-avoidance-and-electrophysiological-properties-of-male-rats
#17
Amin Rostami, Minoo Shahani, Mohammad Reza Zarrindast, Saeed Semnanian, Mohammad Rahmati Roudsari, Mostafa Rezaei Tavirani, Hadi Hasanzadeh
INTRODUCTION: The effects of electromagnetic fields on biological organisms have been a controversial and also interesting debate over the past few decades, despite the wide range of investigations, many aspects of extremely low frequency electromagnetic fields (ELF/EMFs) effects including mechanism of their interaction with live organisms and also their possible biological applications still remain ambiguous. In the present study, we investigated whether the exposures of ELF/EMF with frequencies of 3 Hz and 60 Hz can affect the memory, anxiety like behaviors, electrophysiological properties and brain's proteome in rats...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/27330707/effect-of-laser-therapy-on-chronic-osteoarthritis-of-the-knee-in-older-subjects
#18
Enas Fawzey Youssef, Qassim Ibrahim Muaidi, Alsayed Abdelhameed Shanb
INTRODUCTION: Osteoarthritis (OA) is a common degenerative joint disease particularly in older subjects. It is usually associated with pain, restricted range of motion, muscle weakness, difficulties in daily living activities and impaired quality of life. To determine the effects of adding two different intensities of low-level laser therapy (LLLT) to exercise training program on pain severity, joint stiffness, physical function, isometric muscle strength, range of motion of the knee, and quality of life in older subjects with knee OA...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/27330706/penetration-depth-of-sodium-hypochlorite-in-dentinal-tubules-after-conventional-irrigation-passive-ultrasonic-agitation-and-nd-yag-laser-activated-irrigation
#19
Abdollah Ghorbanzadeh, Mohsen Aminsobhani, Khosro Sohrabi, Nasim Chiniforush, Sarvenaz Ghafari, Ahmad Reza Shamshiri, Niusha Noroozi
INTRODUCTION: The penetration depth of irrigating solutions in dentinal tubules is limited; consequently, bacteria can remain inside dentinal tubules after the cleaning and shaping of the root canal system. Therefore, new irrigation systems are required to increase the penetration depth of irrigating solutions in dentinal tubules. METHODS: A comparative study regarding the penetration depth of sodium hypochlorite (NaOCl) solution in dentinal tubules using four methods, (1) conventional irrigation (CI), (2) smear layer removal plus conventional irrigation (gold standard), (3) passive ultrasonic agitation (PUA) and (4) Nd:YAG laser activated irrigation (LAI), took place on 144 extracted mandibular teeth with a single root canal...
2016: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/27330705/comparison-of-the-antibacterial-effect-of-810-nm-diode-laser-and-photodynamic-therapy-in-reducing-the-microbial-flora-of-root-canal-in-endodontic-retreatment-in-patients-with-periradicular-lesions
#20
Mohammad Asnaashari, Mostafa Godiny, Saranaz Azari-Marhabi, Fahimeh Sadat Tabatabaei, Maryam Barati
INTRODUCTION: The aim of this study was to compare the antibacterial efficacy of diode laser 810nm and photodynamic therapy (PDT) in reducing bacterial microflora in endodontic retreatment of teeth with periradicular lesion. METHODS: In this in vivo clinical trial, 20 patients who needed endodontic retreatment were selected. After conventional chemo mechanical preparation of root canals, microbiological samples were taken with sterile paper point (PP), held in thioglycollate broth, and then were transferred to the microbiological lab...
2016: Journal of Lasers in Medical Sciences
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