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Lasers in Medical Science

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https://www.readbyqxmd.com/read/28345122/effect-of-laser-on-pain-relief-and-wound-healing-of-recurrent-aphthous-stomatitis-a-systematic-review
#1
REVIEW
Valerie G A Suter, Sophia Sjölund, Michael M Bornstein
The aim of this systematic review was to assess a potential benefit of laser use in the treatment of recurrent aphthous stomatitis (RAS). The primary outcome variables were pain relief, duration of wound healing and reduction in episode frequency. A PICO approach was used as a search strategy in Medline, Embase and Cochrane databases. After scanning and excluding titles, abstracts and full texts, 11 studies (ten RCTs and one non-randomised controlled trial) were included. Study selection and data extraction was done by two observers...
March 27, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28342007/the-effect-of-led-on-blood-microcirculation-during-chronic-wound-healing-in-diabetic-and-non-diabetic-patients-a-prospective-double-blind-randomized-study
#2
Igor Frangez, Ksenija Cankar, Helena Ban Frangez, Dragica Maja Smrke
Chronic wounds, especially in diabetic patients, represent a challenging health issue. Since standard treatment protocols often do not provide satisfactory results, additional treatment methods-like phototherapy using low-level light therapy-are being investigated. The aim of our study was to evaluate the effect of phototherapy with light-emitting diodes on chronic wound treatment in diabetic and non-diabetic patients. Since a sufficient blood supply is mandatory for wound healing, the evaluation of microcirculation in the healthy skin at a wound's edge was the main outcome measure...
March 25, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28337563/role-of-low-level-laser-therapy-added-to-facial-expression-exercises-in-patients-with-idiopathic-facial-bell-s-palsy
#3
Banu Ordahan, Ali Yavuz Karahan
The aim of the present study was to investigate the efficacy of low-level laser therapy in conjunction with conventional facial exercise treatment on functional outcomes during the early recovery period in patients with facial paralysis. Forty-six patients (mean age 41 ± 9.7 years; 40 women and 6 men) were randomized into two groups. Patients in the first group received low-level laser treatment as well as facial exercise treatment, while patients in the second group participated in facial exercise intervention alone...
March 23, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28332131/biostimulation-with-diode-laser-positively-regulates-cementoblast-functions-in-vitro
#4
Serife Buket Bozkurt, Erdogan E Hakki, Seyit Ali Kayis, Niyazi Dundar, Sema S Hakki
The aim of this study was to evaluate the effects of diode laser biostimulation on cementoblasts (OCCM.30). A total of 40 root plates were obtained from healthy third molar teeth and assigned to the following two groups: (1) control group and (2) laser-treated group. Root plates were placed into the cell culture inserts, and OCCM.30 cells were seeded onto root plates. Cells were irradiated with a low level of diode laser (power: 0.3 W in continuous wave, 60 s/cm(2)). Proliferation and mineralized tissue-associated gene's and BMP's messenger RNA (mRNA) expressions of cementoblasts were evaluated...
March 22, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28321647/photobiomodulation-of-wound-healing-via-visible-and-infrared-laser-irradiation
#5
Hakan Solmaz, Yekta Ulgen, Murat Gulsoy
Fibroblast cells are known to be one of the key elements in wound healing process, which has been under the scope of research for decades. However, the exact mechanism of photobiomodulation on wound healing is not fully understood yet. Photobiomodulation of 635 and 809 nm laser irradiation at two different energy densities were investigated with two independent experiments; first, in vitro cell proliferation and then in vivo wound healing. L929 mouse fibroblast cell suspensions were exposed with 635 and 809 nm laser irradiations of 1 and 3 J/cm(2) energy densities at 50 mW output power separately for the investigation of photobiomodulation in vitro...
March 20, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28314941/neuropeptide-expression-and-morphometric-differences-in-crushed-alveolar-inferior-nerve-of-rats-effects-of-photobiomodulation
#6
Daniel Oliveira Martins, Fabio Martinez Dos Santos, Adriano Polican Ciena, Ii-Sei Watanabe, Luiz Roberto G de Britto, José Benedito Dias Lemos, Marucia Chacur
Inferior alveolar nerve (IAN) injuries may occur during various dental routine procedures, especially in the removal of impacted lower third molars, and nerve recovery in these cases is a great challenge in dentistry. Here, the IAN crush injury model was used to assess the efficacy of photobiomodulation (PBM) in the recovery of the IAN in rats following crushing injury (a partial lesion). Rats were divided into four experimental groups: without any procedure, IAN crush injury, and IAN crush injury with PBM and sham group with PBM...
March 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28299490/molecular-effects-of-fractional-ablative-erbium-yag-laser-treatment-with-multiple-stacked-pulses-on-standardized-human-three-dimensional-organotypic-skin-models
#7
Laurenz Schmitt, P M Amann, Y Marquardt, R Heise, K Czaja, P A Gerber, T Steiner, F Hölzle, Jens Malte Baron
The molecular changes in gene expression following ablative laser treatment of skin lesions, such as atrophic scars and UV-damaged skin, are not completely understood. A standardized in vitro model of human skin, to study the effects of laser treatment on human skin, has been recently developed. Therefore, the aim of the investigation was to examine morphological and molecular changes caused by fractional ablative erbium:YAG laser treatment on an in vitro full-thickness 3D standardized organotypic model of human skin...
March 15, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28299489/a-split-face-comparison-of-q-switched-nd-yag-1064-nm-laser-for-facial-rejuvenation-in-nevus-of-ota-patients
#8
Cao Yongqian, Lin Li, Bi Jianhai, Huo Ran, Guo Li, Wei Hao, Wang Xining, Xie Shigang, Wang Yibing
We aimed to investigate the efficacy and safety of using the 1064-nm Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) laser (QSNYL) for skin rejuvenation in patients with Nevus of Ota. A retrospective, randomized, split-faced, clinical study was conducted. Twenty-nine patients with unilateral moderate to severe Nevus of Ota were enrolled. The participants completed 3-13 sessions of QSNYL treatments 3-6 months apart. Two independent physicians compared the treated and untreated sides of the face to evaluate the clearance of Nevus of Ota, the wrinkle severity rating scale (WSRS), the global aesthetic improvement scale (GAIS), and adverse event reporting...
March 15, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28293873/the-association-between-nd-yag-laser-and-desensitizing-dentifrices-for-the-treatment-of-dentin-hypersensitivity
#9
Sandra Ribeiro Cunha, Stephanie Assimakopoulos Garófalo, Taís Scaramucci, Denise Maria Zezell, Ana Cecilia Corrêa Aranha
This study aims to evaluate the association between Nd:YAG laser (with and without a photoabsorber) and two desensitizing dentifrices containing 15% NovaMin or 8% arginine, as potential treatments for dentin hypersensitivity (DH). DH was simulated by EDTA application for 2 min. Specimens were then analyzed with an environmental scanning electron microscope (ESEM) to ensure open dentin tubules (ODT), counted by using ImageJ software. Specimens were randomized into eight groups (n = 10): Laser (L), Laser+Photoabsorber (LP), Arginine (A), Arginine+Laser (AL), Arginine+Laser+Photoabsorber (ALP), NovaMin (N), NovaMin+Laser (NL), and NovaMin+Laser+Photoabsorber (NLP)...
March 14, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28293872/effect-of-high-laser-output-on-the-central-bronchi-and-pulmonary-artery
#10
A Kirschbaum, P Rexin, D K Bartsch, K Quint
A diode-pump Nd:YAG high-power laser (wavelength 1320 nm, power 100 W) is routinely used to surgically remove lung metastases. Even pulmonary lesions in central locations are resectable via this method, yet it also carries a potential risk of damaging the larger bronchi and vessels in the vicinity. Studies investigating the safety of using high-power lasers are lacking. We therefore aimed to examine the direct effects of a 100-watt laser on the bronchi and pulmonary artery at a standard working velocity. From freshly slaughtered pigs, we isolated cylindrical specimens of the trachea, the main and lobar bronchi, and the central pulmonary artery from the both lungs...
March 14, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28293871/greenlight-laser-photoselective-vaporization-of-the-prostate-for-treatment-of-benign-prostate-hyperplasia-lower-urinary-tract-symptoms-in-patients-with-different-post-void-residual-urine
#11
Fei Luo, Hong-Hong Sun, Yan-Hui Su, Zhi-Hua Zhang, Ya-Shen Wang, Zhen Zhao, Jian Li
The purpose of this study is to assess the safety and efficacy of GreenLight laser photoselective vaporization of the prostate (PVP) for the treatment of benign prostate hyperplasia/lower urinary tract symptoms (BPH/LUTS) in patients with different post-void residual urine (PVR). BPH/LUTS patients treated with PVP from January 2014 to January 2016 were enrolled in the present study. All patients were divided into PVR > 50, 50 ≤ PVR < 400, and PVR ≥ 400 ml groups, and standard general and urological methods for BPH/LUTS were carried out...
March 14, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28289894/the-effect-of-low-level-laser-therapy-on-tooth-movement-during-canine-distalization
#12
Sevin Erol Üretürk, Müyesser Saraç, Sönmez Fıratlı, Şule Batu Can, Yegane Güven, Erhan Fıratlı
The aim of the study is to determine the effects of low level laser therapy on tooth movement during canine distalization by evaluating IL-1β, TGF-β1 levels in gingival crevicular fluid. Maxillary first premolars of the 15 Angle Class II division I patients (12-19 years old) were extracted. Right maxillary canines were distalized by standard protocol as control group whereas the left maxillary canines distalized by laser application. A gallium-aluminum-arsenide diode laser with an output power of 20 mW was applied as five doses from the buccal and the palatal side on the day 0, and the 3rd, 7th, 14th, 21th 30th, 33st, 37th, 60th, 63th, and 67th days...
March 14, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28285410/epithelial-cell-enhanced-metabolism-by-low-level-laser-therapy-and-epidermal-growth-factor
#13
Fernanda Gonçalves Basso, Taisa Nogueira Pansani, Lais Medeiros Cardoso, Mariana Citta, Diana Gabriela Soares, Débora Salles Scheffel, Josimeri Hebling, Carlos Alberto de Souza Costa
Reepithelialization and wound closure are the desired outcome for several ulcerative conditions. Such resolution reduces the possibility of wound contamination and maintenance of the injury and improves the reestablishment of tissue morphology and functions. Investigators are seeking adjuvant therapies that can accelerate wound healing and are developing new strategies for clinical applications. This study compared the effects of epidermal growth factor (EGF) application and low-level laser therapy (LLLT) on cultured epithelial cells...
March 11, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28283814/effect-of-photobiomodulation-therapy-808%C3%A2-nm-in-the-control-of-neuropathic-pain-in-mice
#14
Ana Laura Martins de Andrade, Paulo Sérgio Bossini, Azair Liane Matos do Canto De Souza, Ariane Dutra Sanchez, Nivaldo Antonio Parizotto
Neuropathic pain can be defined as the pain initiated or caused by a primary lesion or dysfunction of the central or peripheral nervous system. Photobiomodulation therapy (PBM) stands out among the physical therapy resources used for analgesia. However, application parameters, especially the energy density, remain controversial in the literature. Therefore, this study aimed to investigate the PBM effect, in different energy densities to control neuropathic pain in mice. Fifty (50) mice were induced to neuropathy by chronic constriction surgery of the sciatic nerve (CCI), treated with PBM (808 nm), and divided into five groups: GP (PBM simulation), GS (sham), GL10, GL20, GL40 (energy density of 10, 20, and 40 J/cm(2), respectively)...
March 10, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28283813/effects-of-photodynamic-laser-and-violet-blue-led-irradiation-on-staphylococcus-aureus-biofilm-and-escherichia-coli-lipopolysaccharide-attached-to-moderately-rough-titanium-surface-in-vitro-study
#15
Marco Giannelli, Giulia Landini, Fabrizio Materassi, Flaminia Chellini, Alberto Antonelli, Alessia Tani, Daniele Nosi, Sandra Zecchi-Orlandini, Gian Maria Rossolini, Daniele Bani
Effective decontamination of biofilm and bacterial toxins from the surface of dental implants is a yet unresolved issue. This study investigates the in vitro efficacy of photodynamic treatment (PDT) with methylene blue (MB) photoactivated with λ 635 nm diode laser and of λ 405 nm violet-blue LED phototreatment for the reduction of bacterial biofilm and lipopolysaccharide (LPS) adherent to titanium surface mimicking the bone-implant interface. Staphylococcus aureus biofilm grown on titanium discs with a moderately rough surface was subjected to either PDT (0...
March 10, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28280999/histomorphologic-and-ultrastructural-recovery-of-myopathy-in-rats-treated-with-low-level-laser-therapy
#16
Natalia Servetto, David Cremonezzi, Juan Carlos Simes, Antonio Di Pietro, Vilma R Campana
The purpose of the present work was to study the effect of low-level laser therapy (LLLT): helium-neon (He-Ne) and gallium arsenide (Ga-As) laser on the histomorphology of muscle and mitochondria in experimental myopathy in rats. Thirty Suquía strain female rats were distributed in groups: (A) control (intact), (B) injured, (C) injured and treated with He-Ne laser, (D) injured and treated with Ga-As laser, (E) irradiated with He-Ne laser on the non-injured muscle, and (F) irradiated with Ga-As laser on the non-injured muscle...
March 9, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28280998/virulence-factors-of-fluconazole-susceptible-and-fluconazole-resistant-candida-albicans-after-antimicrobial-photodynamic-therapy
#17
Fernanda Alves, Ewerton Garcia de Oliveira Mima, Renata Caroline Polato Passador, Vanderlei Salvador Bagnato, Janaína Habib Jorge, Ana Cláudia Pavarina
This study evaluated the effects of antimicrobial photodynamic therapy (aPDT) mediated by Photodithazine® (PDZ) and LED light on the virulence factors of fluconazole-susceptible (CaS) and fluconazole-resistant (CaR) Candida albicans. Standardized suspensions of strains were prepared (10(7)), and after 48 h of biofilm formation, these strains were incubated with PDZ (100 mg/L) for 20 min and exposed to LED light (660 nm, 37.5 J/cm(2)). Additional samples were treated with PDZ or light only, and the control consisted of biofilms that received no treatment...
March 9, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28280997/shear-bond-wettability-and-afm-evaluations-on-co2-laser-irradiated-cad-cam-ceramic-surfaces
#18
Ahmed El Gamal, Etienne Medioni, Jean Paul Rocca, Carlo Fornaini, Omid H Muhammad, Nathalie Brulat-Bouchard
The purpose of this study is to determine the CO2 laser irradiation in comparison with sandblasting (Sb), hydrofluoric acid (Hf) and silane coupling agent (Si) on shear bond strength (SBS), roughness (Rg) and wettability (Wt) of resin cement to CAD/CAM ceramics. Sixty (CAD/CAM) ceramic discs were prepared and distributed into six different groups: group A, control lithium disilicate (Li); group B, control zirconia (Zr); group C, Li: CO2/HF/Si; group D, Li: HF/Si; group E, Zr: CO2/Sb/Si; group F, Zr: Sb/Si. Result showed significant difference between irradiated and non-irradiated in terms of shear bond strength for zirconia ceramics (p value = 0...
March 9, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28271376/quantifying-glucose-and-lipid-components-in-human-serum-by-raman-spectroscopy-and-multivariate-statistics
#19
Landulfo Silveira, Rita de Cássia Fernandes Borges, Ricardo Scarparo Navarro, Hector Enrique Giana, Renato Amaro Zângaro, Marcos Tadeu Tavares Pacheco, Adriana Barrinha Fernandes
Raman spectroscopy has been employed in the quantitative analysis of biochemical components in human serum. This study aimed to develop a spectral model to estimate the concentration of glucose and lipid fractions in human serum, thus evaluating the feasibility of Raman spectroscopy technique for diagnostic purposes. A total of 44 samples of blood serum were collected from volunteers submitted to routine blood biochemical assay analysis. The biochemical concentrations of glucose, triglycerides, cholesterol, and high-density and low-density lipoproteins (HDL and LDL) were obtained by colorimetric method...
March 7, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28265789/depigmentation-with-q-switched-nd-yag-laser-in-universal-vitiligo-a-long-term-follow-up-study-of-4%C3%A2-years
#20
Imran Majid, Saher Imran
Q-switched (QS) lasers are used for depigmentation in universal vitiligo, but there is limited data on long-term results after laser treatment. This study was conducted to assess the safety and long-term follow-up results of QS Nd:YAG laser treatment in combination with need-based topical depigmentation therapy for universal vitiligo. A retrospective study was performed on patients with universal vitiligo who had received QS Nd:YAG laser treatment from 2010 to 2013. All patients were contacted and called for follow-up...
March 7, 2017: Lasers in Medical Science
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