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Photomedicine and Laser Surgery

Jonathan B Gillespie, Michelle Maclean, Martin J Given, Mark P Wilson, Martin D Judd, Igor V Timoshkin, Scott J MacGregor
OBJECTIVE: This study investigates possible advantages in pulsed over continuous 405-nm light-emitting diode (LED) light for bacterial inactivation and energy efficiency. BACKGROUND: Alternative nonantibiotic methods of disinfection and infection control have become of significant interest. Recent studies have demonstrated the application of systems using 405-nm LEDs for continuous disinfection of the clinical environment, and also for potential treatment of contaminated wounds...
October 19, 2016: Photomedicine and Laser Surgery
Sturla Haslerud, Rodrigo Alvaro Brandão Lopes-Martins, Lúcio Frigo, Jan Magnus Bjordal, Rodrigo Labat Marcos, Ingvill Fjell Naterstad, Liv Heide Magnussen, Jon Joensen
BACKGROUND AND OBJECTIVE: Low-level laser therapy (LLLT) and cryotherapy are widely used treatments in the acute phase of tendon injury. The aim of this study was to investigate the interaction of these two treatments on tendon inflammation and mechanical properties. MATERIALS AND METHODS: Six groups of six Wistar rats were used in this study. The Achilles tendons of the healthy control group were not subjected to injury or treatment. The tendons of the injured nontreated group (ING) were injured, but not treated...
September 14, 2016: Photomedicine and Laser Surgery
Yuan Xiao-Ying, Pang Xiao-Wen, Zhang Guo-Qiang, Guo Jian-You
BACKGROUND: Salidroside is the major active component of Rhodiola rosea, a traditional Chinese herbal medicine used for protection against ultraviolet (UV) radiation. OBJECTIVES: This study investigated whether salidroside can protect skin from ultraviolet B (UVB)-induced oxidative damage in human immortalized HaCaT keratinocytes and the skin of guinea pigs. METHODS: Using HaCaT cell models, the effects of salidroside on oxidative damage and possible regulatory factors [including NF-E2-related factor 2 (Nrf2), NAD(P)H-quinone oxidoreductase (NQO1), and heme oxygenase 1 (HO-1)] were examined...
September 14, 2016: Photomedicine and Laser Surgery
Yiwei Liu, Hao Zhang
OBJECTIVE: The purpose of this article was to review the molecular mechanisms of low-level laser irradiation (LLLI) preconditioning for heart cell therapy. BACKGROUND DATA: Stem cell transplantation appears to offer a better alternative to cardiac regenerative therapy. Previous studies have confirmed that the application of LLLI plays a positive role in regulating stem cell proliferation and in remodeling the hostile milieu of infarcted myocardium. Greater understanding of LLLI's underlying mechanisms would be helpful in translating cell transplantation therapy into the clinic...
September 14, 2016: Photomedicine and Laser Surgery
Gwangchul Lee, Bora Kim, Youngjong Ko, Mineon Park, Donghwi Kim, Kang Hyeon Ryu, Yong Cheol Jun, Hong Moon Sohn, Wonbong Lim
OBJECTIVE: This study was designed to investigate the effect of 635-nm irradiation from a light emitting diode (LED) on osteoclastogenesis in receptor activator of nuclear factor kappa-B (NF-κB) ligand (RANKL)-stimulated mouse bone marrow-derived macrophages (BMMs). We determined whether 635-nm irradiation modulated the RANKL-induced osteoclastic signaling pathway in heat shock protein-27 (HSP27)-silenced cells and analyzed the functional cross talk between these factors in osteoclastic differentiation and activation...
September 14, 2016: Photomedicine and Laser Surgery
Alenka Pavlič, Urban Matoh, Vladan Rajić, Milan Petelin
BACKGROUND AND OBJECTIVE: Periodontal disease is one of common oral manifestations in patients with Fanconi anemia (FA). The aim of the study was to evaluate the effect of photodynamic therapy (PDT) on periodontal clinical and microbial parameters in a patient with FA. MATERIALS AND METHODS: For a 16-year-old girl, diagnosed with having FA and periodontal disease, the protocol treatment with duration of 10 months was designed. Every 2 months, thorough oral cavity disinfection was followed by PDT, using photosensitizer phenothiazine chloride activated by a diode laser light...
September 14, 2016: Photomedicine and Laser Surgery
Ayhan Eymirli, Emre Nagas, Mehmet Ozgur Uyanik, Zafer Cavit Cehreli
OBJECTIVE: This study assessed the efficacy of erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser-activated irrigation (LAI) of ethylene diaminetetraacetic acid (EDTA) and phytic acid on the removal of calcium hydroxide (CH) and triple antibiotic paste (TAP) from root canals. BACKGROUND DATA: Although some studies investigated the efficacy of LAI of EDTA irrigation, no study has been conducted to investigate the efficacy of LAI of phytic acid in the removal of CH and TAP from root dentin...
September 12, 2016: Photomedicine and Laser Surgery
Alberto Balzani, Georgios Orfaniotis, Davide Lazzeri, Pedro Ciudad, Aurelia Trisliana Perdanasari, Marzia Nicoli, Ram M Chilgar, Kanellos Gesakis, Bulent Sacak, Fabio Nicoli
Facial vascular malformations can cause a number of functional problems, including difficulties in breathing, eating, speech, and mobility. Psychological problems can also arise due to the possible unpleasant appearance of such lesions. Further, these lesions can lead to a number of complications, including pain, ulceration, infection, and significant bleeding. Many treatments have been proposed in the literature. Laser therapy (and its related treatments by non-coherent light sources) is now considered the gold standard in the treatment of the majority of vascular lesions...
September 12, 2016: Photomedicine and Laser Surgery
Andrea Amaroli, Silvia Ravera, Steven Parker, Isabella Panfoli, Alberico Benedicenti, Stefano Benedicenti
OBJECTIVE: Photobiomodulation is proposed as a non-linear process. Only the action of light at a low intensity and fluence is assumed to have stimulation on cells; whereas a higher light intensity and fluence generates negative effects, exhausting the cell's energy reserve as a consequence of a too strong stimulation. In our work, we detected the photobiomodulatory effect of an 808-nm higher-fluence diode laser [64 J/cm(2)-1 W, continuous wave (CW)] irradiated by a flat-top handpiece on mitochondria activities, such as oxygen consumption, activity of mitochondria complexes I, II, III, and IV, and cytochrome c as well as ATP synthesis...
September 12, 2016: Photomedicine and Laser Surgery
Catia Cilene Nass Sebrão, Arandi Ginane Bezerra Junior, Paulo Henrique Condeixa de França, Leslie Ecker Ferreira, Vania Portela Ditzel Westphalen
The aim of this in vitro study was to compare the efficiency of a photodynamic therapy (PDT) technique employing rose bengal (RB) and methylene blue (MB) as photosensitizers (PSs) to reduce the viability of Enterococcus faecalis, a well-known pathogen found in root canal systems. Currently, in several clinical applications, including in the field of endodontics, MB is employed in association with a red laser source for the photoinactivation of pathogenic bacteria. Here, it was used at 0.01% (31.2 mol/L) in association with a red (660 nm) laser as the excitation source in the MB group (MBG)...
September 9, 2016: Photomedicine and Laser Surgery
Mingmei Meng, Min Yang, Chunxiao Lv, Qingqing Yang, Zhenjin Yang, Song Chen
OBJECTIVE AND BACKGROUND: Low-level laser therapy (LLLT) has been used to reduce the relapse of orthodontically rotated teeth. However, controversial conclusions have been drawn by different authors. This review aimed to evaluate the efficacy of LLLT on relapse of corrected tooth rotations systematically by overall search of available studies and scientific assessment. METHODS: A comprehensive electronic search was performed through PubMed, MEDLINE, EMBASE, Web of Science, CENTRAL, PRL, and WHO ICTRP up to November 2015 with no language limitation...
August 26, 2016: Photomedicine and Laser Surgery
Sérgio Luiz Pinheiro, Giuliana Rodrigues Azenha, Yasmin Marialva Democh, Daniela Camila Nunes, Silvia Provasi, Giovana Masiero Fontanetti, Danilo Antônio Duarte, Carlos Eduardo Fontana, Carlos Eduardo da Silveira Bueno
OBJECTIVE: The present study sought to evaluate the antimicrobial activity against Enterococcus faecalis of photodynamic therapy applied before and after reciprocating instrumentation of permanent molars. BACKGROUND: Apical extrusion of debris can cause flare-ups due to introduction of bacteria into the periapical tissues. METHODS: Eighteen mesial roots from permanent mandibular molars were selected. The crowns were removed to obtain a standard root length of 15 mm...
August 25, 2016: Photomedicine and Laser Surgery
Andréa Conceição Gomes Lima, Gilderlene Alves Fernandes, Raimundo de Barros Araújo, Isabel Clarisse Gonzaga, Rauirys Alencar de Oliveira, Renata Amadei Nicolau
BACKGROUND AND OBJECTIVES: This study aimed at analyzing the healing effects of low-level laser therapy (LLLT) (λ620 nm, 6 J/cm(2)) and light-emitting diode (LED) therapy (λ640 nm, 6 J/cm(2)) on the longitudinal sternotomy incisions of hyperglycemic and normoglycemic patients who underwent coronary artery bypass grafting (CABG). MATERIALS AND METHODS: 120 volunteers were electively submitted to CABG and were randomly allocated into four different groups of equal size (n = 30): control, placebo, laser (λ of 640 nm and spatial average energy fluency [SAEF] of 1...
August 25, 2016: Photomedicine and Laser Surgery
Chikako Kaminaka, Fukumi Furukawa, Yuki Yamamoto
OBJECTIVE: This retrospective case series was designed to compare the long-term safety and efficacy of bipolar fractional radiofrequency (FRF) therapy as a treatment for atrophic acne scars (ASs) and acne vulgaris. BACKGROUND DATA: Few clinical and histological studies have examined the long-term utility of bipolar FRF therapy as a treatment for ASs and acne in people with darker skin. MATERIALS AND METHODS: Eight Japanese patients with ASs and mild-to-severe acne on both cheeks were treated with a bipolar FRF system (eMatrix; Syneron)...
August 25, 2016: Photomedicine and Laser Surgery
Narda G Robinson
No abstract text is available yet for this article.
October 2016: Photomedicine and Laser Surgery
Dan Li, Shi-Bin Lin, Biao Cheng
BACKGROUND: For 20 years, intense pulsed light (IPL) technology has been used to treat various medical problems. IPL has since developed rapidly, becoming popular among patients worldwide. Recently, IPL has been used mainly for cosmetic purposes. Researchers are constantly seeking new applications of IPL to meet the increasing needs of patients. OBJECTIVE: This review summarizes the development of IPL devices, discusses the current literature on the clinical application of IPL to increase our understanding of IPL, and provides guidance for broadening its clinical applications...
October 2016: Photomedicine and Laser Surgery
Mohammad Ali Alshami, Mona Jameel Mohana
OBJECTIVE: The present study aimed to assess the safety and efficacy of palmoplantar wart removal using long-pulsed 1064-nm Nd:YAG laser after application of a moisturizing cream. BACKGROUND: Previously described laser treatments for wart removal are associated with negative side effects and need to pare the warts before laser treatment. PATIENTS/METHODS: Two hundred forty patients (142 males, 98 females) were treated for 1-40 palmoplantar warts by long-pulsed 1064-nm Nd:YAG laser (spot size 4-6 mm, pulse duration 20 msec, fluence 200 J/cm(2)) after covering the wart surface with a thin film of a moisturizing cream...
October 2016: Photomedicine and Laser Surgery
Aliye Kamalak, Ismail Uzun, Hakan Arslan, Ali Keleş, Ezgi Doğanay, Cangül Keskin, Merve Akçay
OBJECTIVE: Additional cleaning techniques and devices are required to remove maximum amount of residual filling material, which might limit disinfection of root canal system during retreatment. This study aimed to compare fracture resistance of roots when self-adjusting file (SAF), photon-induced photoacoustic streaming (PIPS), passive ultrasonic irrigation (PUI), erbium-doped yttrium aluminum garnet (Er:YAG), or neodymium-doped yttrium aluminum garnet (Nd:YAG) lasers are applied following the use of retreatment files in endodontics...
October 2016: Photomedicine and Laser Surgery
Lu Sheng, Zhong-Yun Zhang, Wei-Qing Qian, Hao-Jie Zhang, Zhong-Quan Sun
BACKGROUND AND OBJECTIVE: Ureteral fibroepithelial polyps (UFPs) are rare benign tumors and ureteroscopy has been used for treatment. We compared the effect of UFP by ureteroscopy combined with holmium laser or thulium laser. METHODS: Twenty-five patients with UFPs were treated in our hospital between May 2003 and April 2013. All patients received ultrasound check and intravenous urography (IVU). We performed ureteroscopy operation and found ureteral polyps, so we resected the polyps with holmium laser (12 cases) or thulium laser (13 cases)...
October 2016: Photomedicine and Laser Surgery
Miguel Rodrigues Martins, Rita C Lima, Irene Pina-Vaz, Manuel Fontes Carvalho, Norbert Gutknecht
OBJECTIVE AND BACKGROUND: Although several surgical techniques have been reported, no study has yet reported alternative strategies for endodontic treatment of autogenous transplanted teeth. Therefore, the aim of this clinical report is to present the long-term endodontic outcome of a nonvital autogenously transplanted third molar treated with an Er,Cr:YSGG laser and radial firing tips (RFTs). CASE REPORT: Autogenous tooth transplantation can be considered an alternative to restore edentulous areas and, in donor's teeth with complete root formation, root canal treatment should be performed up to 14 days following transplantation...
October 2016: Photomedicine and Laser Surgery
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