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Lasers in Medical Science

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https://www.readbyqxmd.com/read/28101736/diagnostic-validity-of-icdas-and-diagnodent-combined-an-in-vitro-study-in-pre-cavitated-lesions
#1
José Enrique Iranzo-Cortés, Sofija Terzic, José María Montiel-Company, José Manuel Almerich-Silla
In a continuous process such as caries, it is important to possess criteria or instruments that allow the lesions to be diagnosed at early stages so that preventive or interceptive treatments can be applied before cavitation takes place. The present study seeks to assess the diagnostic efficacy of the International Caries Detection and Assessment System (ICDAS II) criteria and the DIAGNOdent laser fluorescence (LF) pen in occlusal caries lesions, using histological sections as the gold standard. Sixty-four permanent teeth were examined by two researchers who previously performed and calibrated both the ICDAS II criteria and the use of DIAGNOdent pen...
January 18, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28091850/repeated-applications-of-photodynamic-therapy-on-candida-glabrata-biofilms-formed-in-acrylic-resin-polymerized
#2
Lírian Silva de Figueiredo Freitas, Rodnei Dennis Rossoni, Antonio Olavo Cardoso Jorge, Juliana Campos Junqueira
Previous studies have been suggested that photodynamic therapy (PDT) can be used as an adjuvant treatment for denture stomatitis. In this study, we evaluated the effects of multiple sessions of PDT on Candida glabrata biofilms in specimens of polymerized acrylic resin formed after 5 days. Subsequently, four applications of PDT were performed on biofilms in 24-h intervals (days 6-9). Also, we evaluated two types of PDT, including application of laser and methylene blue or light-emitting diode (LED) and erythrosine...
January 14, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28091849/dynamic-optical-absorption-characteristics-of-blood-after-slow-and-fast-heating
#3
Hao Jia, Bin Chen, Dong Li
Laser treatment is the most effective therapy in dermatology for vascular skin disorders, such as port-wine stains (PWS). Changes in heat-induced absorbance in blood must be determined for accurate numerical simulation and implementation of multi-pulse laser therapy for treatment of PWS. Thermally induced absorbance changes in hemoglobin in blood were compared in vitro between slow water bath heating and fast heating irradiated by using sub-millisecond Nd:YAG laser. Blood composition at different temperatures was calculated by comparing blood absorption spectra with those of pure HbO2, Hb, and metHb at room temperature...
January 13, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28091848/a-novel-combination-treatment-to-stimulate-bone-healing-and-regeneration-under-hypoxic-conditions-photobiomodulation-and-melatonin
#4
Jang-Ho Son, Bong-Soo Park, In-Ryoung Kim, Iel-Yong Sung, Yeong-Cheol Cho, Jung-Soo Kim, Yong-Deok Kim
Melatonin has anabolic effects on the bone, even under hypoxia, and laser irradiation has been shown to improve osteoblastic differentiation. The aim of this study was to investigate whether laser irradiation and melatonin would have synergistic effects on osteoblastic differentiation and mineralization under hypoxic conditions. MC3T3-E1 cells were exposed to 1% oxygen tension for the hypoxia condition. The cells were divided into four groups: G1-osteoblast differentiation medium only (as the hypoxic condition), G2-treatment with 50 μM melatonin only, G3-laser irradiation (808 nm, 80 mW, GaAlAs diode) only, and G4-treatment with 50 μM melatonin and laser irradiation (808 nm, 80 mW, GaAlAs diode)...
January 13, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28078504/pulsed-dye-laser-on-ecchymoses-clinical-and-histological-assessment
#5
Adrián Alegre-Sánchez, D Saceda-Corralo, G Segurado-Miravalles, D de Perosanz-Lobo, P Fonda-Pascual, O M Moreno-Arrones, D Buendía-Castaño, B Perez-García, P Boixeda
No abstract text is available yet for this article.
January 11, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28078503/efficacy-of-pulsed-nd-yag-laser-in-the-treatment-of-patients-with-knee-osteoarthritis-a-randomized-controlled-trial
#6
Mohamed Salaheldien Mohamed Alayat, Tarek Helmy Ahmed Aly, Aly Elsayed Mohamed Elsayed, Ammar Suliman Mohamed Fadil
The purpose of this study was to investigate the effects of pulsed Nd:YAG laser plus glucosamine/chondroitin sulfate (GCS) in patients with knee osteoarthritis (KOA) by examining changes in pain and knee function, as well as synovial thickness (ST) and femoral cartilage thickness (FCT). Sixty-seven male patients participated, with a mean (SD) age of 53.85 (4.39) years, weight of 84.01 (4.70) kg, height of 171.51 (3.96) cm, and BMI of 28.56 (1.22). Group 1 was treated with high-intensity laser therapy (HILT), GCS, and exercises (HILT + GCS + EX)...
January 11, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28074305/clinical-effectiveness-of-low-level-laser-treatment-on-peripheral-somatosensory-neuropathy
#7
REVIEW
Alireza Fallah, Alireza Mirzaei, Norbert Gutknecht, Amir Saberi Demneh
Peripheral sensory neuropathy treatment is one of the common treatment problems and causes morbidity and mortality in people suffering from that. Although treatment depends on the underlying cause of the condition, nevertheless, in some cases, there is no cure for it, and it requires palliative and symptomatic treatment. In laboratory studies, low-level laser has been effective in the nerves protection and restoration. The aim of this article is to investigate the clinical efficacy of low-level laser on improvement of the peripheral somatosensory neuropathy...
January 10, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28063018/analysis-of-the-variation-in-low-level-laser-energy-density-on-the-crushed-sciatic-nerves-of-rats-a-morphological-quantitative-and-morphometric-study
#8
Eduardo Keiske Mastuda Ziago, Valéria Paula Sassoli Fazan, Mamie Mizusaki Iyomasa, Luiz Gustavo Sousa, Paula Yumi Yamauchi, Eunice Aparecida da Silva, Eduardo Borie, Ramón Fuentes, Fernando José Dias
The objective of this study was to evaluate three energy densities of low-level laser therapy (LLLT, GaAlAs, 780 nm, 40 mW, 0.04 cm(2)) for the treatment of lesions to peripheral nerves using the sciatic nerve of rats injured via crushing model (15 kgf, 5.2 MPa). Thirty Wistar rats (♂, 200-250 g) were divided into five groups (n = 6): C-control, not injured, and irradiated; L0-injured nerve without irradiation; L4-injured nerve irradiated with LLLT 4 J/cm(2) (0.16 J); L10-injured nerve irradiated with LLLT 10 J/cm(2) (0...
January 7, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28063017/the-photobiomodulation-effect-of-higher-fluence-808-nm-laser-therapy-with-a-flat-top-handpiece-on-the-wound-healing-of-the-earthworm-dendrobaena-veneta-a-brief-report
#9
Andrea Amaroli, Sara Ferrando, Reem Hanna, Lorenzo Gallus, Alberico Benedicenti, Sonia Scarfì, Marina Pozzolini, Stefano Benedicenti
No abstract text is available yet for this article.
January 6, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28054262/does-photobiomodulation-therapy-is-better-than-cryotherapy-in-muscle-recovery-after-a-high-intensity-exercise-a-randomized-double-blind-placebo-controlled-clinical-trial
#10
Thiago De Marchi, Vinicius Mazzochi Schmitt, Guilherme Pinheiro Machado, Juliane Souza de Sene, Camila Dallavechia de Col, Olga Tairova, Mirian Salvador, Ernesto Cesar Pinto Leal-Junior
This study aimed to determine the effectiveness of photobiomodulation therapy (PBMT) and cryotherapy, in isolated and combined forms, as muscle recovery techniques after muscle fatigue-inducing protocol. Forty volunteers were randomly divided into five groups: a placebo group (PG); a PBMT group (PBMT); a cryotherapy group (CG); a cryotherapy-PBMT group (CPG); and a PBMT-cryotherapy group (PCG). All subjects performed four sessions at 24-h intervals, during which they submitted to isometric assessment (MVC) and blood collection in the pre-exercise period, and 5 and 60 min post-exercise, while the muscle fatigue induction protocol occurred after the pre-exercise collections...
January 5, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28054261/effectiveness-of-low-level-laser-therapy-on-pain-intensity-pressure-pain-threshold-and-sf-mpq-indexes-of-women-with-myofascial-pain
#11
Laís Valencise Magri, Vinícius Almeida Carvalho, Flávia Cássia Cabral Rodrigues, César Bataglion, Christie Ramos Andrade Leite-Panissi
Women with temporomandibular disorders (TMD) frequently report pain areas in body regions. This process is associated with central sensitization phenomena, present in chronic pain. The low-level laser therapy (LLLT) has been reported as a therapeutic option for the painful TMD treatment. The aim of this study was to analyze the effect of LLLT on pain intensity (visual analogue scale, VAS), pain sensitivity in orofacial and corporal points (pressure pain threshold, PPT), and on Short Form-McGill Pain Questionnaire (SF-MPQ) indexes of women with myofascial pain (subtype of muscle TMD)...
January 4, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28054260/effect-of-er-yag-laser-on-dentin-demineralization-around-restorations
#12
Michelle Alexandra Chinelatti, Cristiane Tomaz Rocha, Vivian Colucci, Mônica Campos Serra, Antonio Luiz Rodrigues-Júnior, Silmara Aparecida Milori Corona
The aim of this study was to evaluate the effect of cavity preparation with Er:YAG laser on dentin adjacent to restorations submitted to cariogenic challenge in situ, by subsuperficial microhardness analysis. Bovine incisors were sectioned, flattened, and polished, resulting in 40 dentin slabs. The slabs were randomly assigned to four groups (n = 10), according to the cavity preparation method: I-high-speed handpiece (control); II-Er:YAG laser (160 mJ; 3 Hz); III-Er:YAG laser (260 mJ; 3 Hz); IV-Er:YAG laser (300 mJ; 3Hz)...
January 4, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28044209/effects-of-low-level-laser-irradiation-on-human-blood-lymphocytes-in-vitro
#13
Mustafa S Al Musawi, M S Jaafar, B Al-Gailani, Naser M Ahmed, Fatanah M Suhaimi, Nursakinah Suardi
Low-level laser irradiation (LLLI) has various effects on cultured human lymphocytes in vitro, but little is known about such effects in whole blood. This study investigated whether LLLI affected lymphocyte count in human whole blood in vitro. A total number of 130 blood samples were collected from apparently healthy adult patients through venipuncture into tubes containing EDTA. Each sample was divided into two equal aliquots to be used as a non-irradiated control sample and an irradiated sample. The irradiated aliquot was subjected to laser wavelengths of 405, 589, and 780 nm with different fluences of 36, 54, 72, and 90 J/cm(2), at a fixed irradiance of 30 mW/cm(2)...
January 3, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28013415/prognostic-impact-of-preoperative-anemia-on-non-muscle-invasive-bladder-carcinoma-treated-with-greenlight-laser-vaporization
#14
Fei Luo, Ya-Shen Wang, Yan-Hui Su, Zhi-Hua Zhang, Hong-Hong Sun, Jian Li
In this study, we aimed to evaluate the impact of preoperative anemia (PA) on oncological outcomes among patients with non-muscle-invasive bladder cancer (NMIBC) treated with GreenLight laser vaporization of bladder tumor (PV-BT). Between January 2010 and December 2015, 407 patients with NMIBC who underwent PV-BT surgery were stratified into normal and anemia groups based on the World Health Organization classification (anemia cutoff value: hemoglobin level, <13.0 m g/dL in men and <12.0 mg/dL in women)...
December 24, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/28004205/vascular-alterations-after-photodynamic-therapy-mediated-by-5-aminolevulinic-acid-in-oral-leukoplakia
#15
Flávia Cristina Perillo Rosin, Ana Rita Ribeiro Barcessat, Giuliana Gadoni Giovanni Borges, Luciana Gonçalves Valente Ferreira, Luciana Corrêa
Impairment of vascular functions after photodynamic therapy (PDT) is frequently associated with tumor remission and is considered one of the main antineoplastic PDT effects. Vascular alterations in oral leukoplakia (OL) treated with PDT have not yet been described. The aim of this study was to evaluate the effect of topical 5-ALA-mediated PDT on the vascular network of 4NQO-induced OL in rats. After applying 4NQO topically on the tongue during 16 weeks, there was induction of dysplastic lesions, which were treated with two PDT sessions (with an interval of 72 h between them), using topical application of 5-ALA and posterior irradiation with a laser (90 J/cm(2) fluency)...
December 21, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/28004204/treatment-of-lupus-erythematosus-of-the-eyelids-with-pulsed-dye-laser
#16
Susana Brás, Borja Gonzalez, Gonzalo Segurado-Miravalles, Pablo Boixeda
No abstract text is available yet for this article.
December 21, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27995385/effect-of-shorter-pulse-duration-in-cochlear-neural-activation-with-an-810-nm-near-infrared-laser
#17
Jingxuan Wang, Lan Tian, Jianren Lu, Ming Xia, Ying Wei
Optical neural stimulation in the cochlea has been presented as an alternative technique to the electrical stimulation due to its potential in spatially selectivity enhancement. So far, few studies have selected the near-infrared (NIR) laser in cochlear neural stimulation and limited optical parameter space has been examined. This paper focused on investigating the optical parameter effect on NIR stimulation of auditory neurons, especially under shorter pulse durations. The spiral ganglion neurons in the cochlea of deafened guinea pigs were stimulated with a pulsed 810-nm NIR laser in vivo...
December 20, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27987044/short-wavelength-infrared-laser-activates-the-auditory-neurons-comparing-the-effect-of-980-vs-810%C3%A2-nm-wavelength
#18
Lan Tian, Jingxuan Wang, Ying Wei, Jianren Lu, Anting Xu, Ming Xia
Research on auditory neural triggering by optical stimulus has been developed as an emerging technique to elicit the auditory neural response, which may provide an alternative method to the cochlear implants. However, most previous studies have been focused on using longer-wavelength near-infrared (>1800 nm) laser. The effect comparison of different laser wavelengths in short-wavelength infrared (SWIR) range on the auditory neural stimulation has not been previously explored. In this study, the pulsed 980- and 810-nm SWIR lasers were applied as optical stimuli to irradiate the auditory neurons in the cochlea of five deafened guinea pigs and the neural response under the two laser wavelengths was compared by recording the evoked optical auditory brainstem responses (OABRs)...
December 16, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27987043/nevus-spilus-treatment-with-fractional-co2-laser-in-combination-with-medlite-c6-laser-a-preliminary-study
#19
Mingjun Tang, Yuyan Cheng, Chunjun Yang, Shengxiu Liu, Yujun Sheng, Yongjiang Li, Weiwei Yin, Wenming Zhou, Sen Yang, Xuejun Zhang
No abstract text is available yet for this article.
December 16, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27966053/erratum-to-picosecond-lasers-for-tattoo-removal-a-systematic-review
#20
Ofer Reiter, Lihi Atzmony, Lehavit Akerman, Assi Levi, Ruben Kershenovich, Moshe Lapidoth, Daniel Mimouni
No abstract text is available yet for this article.
December 14, 2016: Lasers in Medical Science
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