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Photomedicine and Laser Surgery

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https://www.readbyqxmd.com/read/28727952/time-resolved-laser-induced-fluorescence-spectroscopy-as-a-guidance-tool-for-laser-lithotripsy-of-gallbladder-stones
#1
Ali Shuaib, Jahja Kokaj, Yacoub Makdisi, Goran Pichler, Abdullah Husain, Sami Asfar
BACKGROUND AND OBJECTIVES: Although laser lithotripsy for fragmentation of gallbladder stones has been applied successfully in many clinical situations, this approach has two major limitations: (1) the potential to damage or perforate the bile duct and (2) the efficiency can be affected by the chemical composition of the gallstones. The present study evaluated the use of time-resolved laser-induced fluorescence spectroscopy to classify stone types and distinguish stone from tissue. MATERIALS AND METHODS: Ex vivo time-resolved laser-induced fluorescence analysis (excitation wavelength λex = 400 nm and emission wavelength = 450-700 nm) of 54 gallbladder stones and seven gallbladder tissue samples was conducted...
July 19, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28677985/achilles-tendon-penetration-for-continuous-810%C3%A2-nm-and-superpulsed-904%C3%A2-nm-lasers-before-and-after-ice-application-an-in-situ-study-on-healthy-young-adults
#2
Sturla Haslerud, Ingvill Fjell Naterstad, Jan Magnus Bjordal, Rodrigo Alvaro Brandão Lopes-Martins, Liv Heide Magnussen, Patrícia Sardinha Leonardo, Ricardo Henrique Marques, Jon Joensen
BACKGROUND AND OBJECTIVE: There is a lack of knowledge about the influence tissue temperature may have on laser light penetration and tendon structure. The purpose of this study was to investigate whether penetration of laser energy in human Achilles tendons differed before and after ice pack application. MATERIALS AND METHODS: The Achilles tendons (n = 54) from 27 healthy young adults were irradiated with two class 3B lasers (810 nm 200 mW continuous mode laser and a 904 nm 60 mW superpulsed mode laser)...
June 30, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28632456/effect-of-carbon-dioxide-laser-on-increasing-vestibular-depth-in-cleft-lip-and-palate-patients
#3
Sogra Yassaei, Hossein Aghili, Alireza Navab Azam, Mahjobeh Gholdani Moghadam, Isa Safari
BACKGROUND: Shallow upper buccal sulcus deformity in cleft lip and palate patients is one of the common secondary deformities after primary cleft lip and palate repair; this deformity may prevent or complicate orthodontic and prosthodontic procedures causing aesthetic and functional problems. A number of methods are described to increase the anterior maxillary sulcus in these patients. PURPOSE: This study assessed the use of a carbon dioxide laser (CO2) to increase the sulcus depth...
June 20, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28628423/current-considerations-for-low-level-laser-therapy-photobiomodulation-therapy-in-the-management-of-side-effects-of-chemoradiation-therapy-for-cancer
#4
Kenji Yoshida
No abstract text is available yet for this article.
June 19, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28622479/making-use-of-lasers-in-periodontal-treatment-a-new-gold-standard
#5
Kinga Grzech-Leśniak
No abstract text is available yet for this article.
June 16, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28621568/presenting-a-method-to-improve-bone-quality-through-stimulation-of-osteoporotic-mesenchymal-stem-cells-by-low-level-laser-therapy
#6
Mohammad Bayat, Ali Jalalifirouzkouhi
OBJECTIVE: This review aims to present a method to improve bone quality through stimulation of osteoporotic mesenchymal stem cells (MSCs) by low-level laser therapy (LLLT). BACKGROUND: Osteoporosis (OP) is characterized by decreased bone mass and bone strength, which results in an increased incidence of bone fractures. These fractures often lead to additional disability and mortality. Osteoporotic MSCs have reduced osteogenic differentiation when cultured in their standard differentiation media...
June 15, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28621565/light-emitting-diode-at-460%C3%A2-%C3%A2-%C3%A2-20%C3%A2-nm-increases-the-production-of-il-12-and-il-6-in-murine-dendritic-cells
#7
Tamires Marielem Carvalho-Costa, Maria Tays Mendes, Marcos Vinicius da Silva, Virmondes Rodrigues, Giuliana Cristina Marre Bruschi Thedei, Carlo Jose Freire Oliveira, Geraldo Thedei
BACKGROUND DATA: Light emitting diode (LED) therapy has been proposed as an option for the treatment of many skin inflammatory processes. Dendritic cells (DCs) are important cells of skin that participate in the initiation and activation of skin immunity. The modulation of these cells by LED could explain much of its effects. OBJECTIVE: Thus, the aim of this study was to examine the effects of LED at 460 ± 20 nm on cytokine production and the expression of surface markers on DCs...
June 15, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28613976/temperature-influence-on-myocardial-cell-cytotoxicity-of-the-extracellular-photosensitization-reaction-with-talaporfin-sodium-and-serum-proteins-at-17-37%C3%A2-c
#8
Emiyu Ogawa, Hiromi Takenoya, Tsunenori Arai
BACKGROUND: We investigated the binding of talaporfin sodium with albumin and its photocytotoxicity during temperature changes by measuring absorbance spectra. The targeted tissue temperature differs according to the procedure. The photocytotoxicity efficiency should be investigated quantitatively because efficiency changes arising from temperature changes are expected. MATERIALS AND METHODS: The temperature dependence of talaporfin sodium binding with human serum albumin (0-20 mg/mL), high-density lipoprotein (0-0...
June 15, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28650740/in-vivo-investigation-of-the-safety-and-efficacy-of-pulsed-dye-laser-with-two-spot-sizes-in-port-wine-stain-treatment-a-prospective-side-by-side-comparison
#9
Wenxin Yu, Hanru Ying, Yijie Chen, Yajing Qiu, Hui Chen, Yunbo Jin, Xi Yang, Tianyou Wang, Gang Ma, Xiaoxi Lin
OBJECTIVE: Pulsed dye laser (PDL) with 7 and 10 mm spot sizes is widely used on a regular basis for the treatment of port-wine stain (PWS). BACKGROUND DATA: No studies have reported on the differences in efficacy outcomes resulting from the use of different laser spot sizes in the treatment of PWS by PDL. Thus, an in vivo investigation into the differences in safety and efficacy of treatment between two spot sizes (7 mm vs. 10 mm) of PWS by PDL was conducted...
May 31, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28557664/efficacy-of-laser-photobiomodulation-on-morphological-and-functional-repair-of-the-facial-nerve
#10
Daniela Vieira Buchaim, Jesus Carlos Andreo, Rui Seabra Ferreira Junior, Benedito Barraviera, Antonio de Castro Rodrigues, Mariana de Cássia Macedo, Geraldo Marco Rosa Junior, Andre Luis Shinohara, Iris Jasmin Santos German, Karina Torres Pomini, Rogerio Leone Buchaim
OBJECTIVE: Evaluate the efficacy of low-level laser therapy (LLLT) on qualitative, quantitative, and functional aspects in the facial nerve regeneration process. MATERIALS AND METHODS: Forty-two male Wistar rats were used, randomly divided into a control group (CG; n = 10), in which the facial nerve without lesion was collected, and four experimental groups: (1) suture experimental group (SEG) and (2) fibrin experimental group (FEG), consisting of 16 animals in which the buccal branch of the facial nerve was sectioned on both sides of the face; an end-to-end epineural suture was performed on the right side, and a fibrin sealant was used on the left side for coaptation of the stumps; and (3) laser suture experimental group (LSEG) and (4) laser fibrin experimental group (LFEG), consisting of 16 animals that underwent the same surgical procedures as SEG and FEG with the addition of laser application at three different points along the surgical site (pulsed laser of 830 nm wavelength, optical output power of 30 mW, power density of 0...
May 26, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28537820/photodynamic-diagnosis-and-narrow-band-imaging-in-the-management-of-bladder-cancer-a-review
#11
Piotr Kutwin, Tomasz Konecki, Marcin Cichocki, Piotr Falkowski, Zbigniew Jabłonowski
BACKGROUND: Bladder cancer is the most common malignancy of the urinary tract. Its proper diagnosis and efficient treatment is still considered a challenge in Urology today. White Light Cystoscopy is a gold standard for the diagnosis, follow-up, and endoscopic treatment of bladder cancer. To improve the efficacy of bladder cancer management, photodynamic diagnosis and narrow-band imaging have been introduced to the urological armamentarium. OBJECTIVE AND METHODS: The article presents the current state of knowledge of technical solutions that are intended to improve the diagnosis and management of bladder cancer...
May 22, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28525303/low-level-laser-therapy-after-wisdom-teeth-surgery-evaluation-of-immunologic-markers-secretory-immunoglobulin-a-and-lysozyme-levels-and-thermographic-examination-placebo-controlled-study
#12
Tatjana Dostalova, Veronika Kroulikova, Stepan Podzimek, Helena Jelinková
OBJECTIVE: The goal of this investigation is to analyze the effect of therapeutic low-level laser therapy (LLLT) to have a possibility to check pain and inflammation connected with surgical removal of impacted lower third molars in general anesthesia or even phobia [not accompanied by pain or fear of dental treatment, using immunologic markers-secretory immunoglobulin A (sIgA) and lysozyme]. The healing process was also monitored by infrared thermography. BACKGROUND DATA: LLLT can accelerate the proliferation phase of healing and decrease the inflammatory reaction, but the effect is not really clear...
May 16, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28622484/bactericidal-effect-of-er-yag-laser-activated-sodium-hypochlorite-irrigation-against-biofilms-of-enterococcus-faecalis-isolate-from-canal-of-root-filled-teeth-with-periapical-lesions
#13
Xiaogang Cheng, Doudou Xiang, Wenxi He, Jun Qiu, Bing Han, Qing Yu, Yu Tian
OBJECTIVE: This study was to evaluate the bactericidal effect of Er:YAG laser-activated sodium hypochlorite irrigation (Er:YAG + NaOCl) on biofilms of Enterococcus faecalis clinical isolate. BACKGROUND DATA: It was reported that Er:YAG + NaOCl had effective bactericidal effect on laboratory-adapted E. faecalis strain, while no study has reported its effect on the clinical isolate. METHODS: Eighteen E. faecalis strains were isolated from 39 root-filled teeth with periapical lesions, and their biofilm formation abilities were evaluated using the crystal violet staining method...
July 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28621579/optimization-of-antimicrobial-photodynamic-therapy-in-biofilms-by-inhibiting-efflux-pump
#14
Tatiana Maria Starck Fogaça de Aguiar Coletti, Laura Marise de Freitas, Ana Marisa Fusco Almeida, Carla Raquel Fontana
BACKGROUND: One of the main mechanisms of microbial resistance is given by efflux pumps, which reduce the effectiveness of antimicrobials by decreasing their intracellular concentration. OBJECTIVE AND METHODS: Considering that efflux pump inhibitors are promising adjuvant molecules for antibiotics in infections, in this study, using XTT test and colony forming unit (CFU) counting, we evaluated the association between the pump inhibitor verapamil (VP) and the antimicrobial photodynamic therapy (aPDT) mediated by methylene blue (MB) in biofilms of Escherichia coli and Staphylococcus aureus to optimize the bacterial reduction...
July 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28613980/visible-blue-light-is-capable-of-inactivating-candida-albicans-and-other-fungal-species
#15
Tianhong Dai, Michael R Hamblin
No abstract text is available yet for this article.
July 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28426292/efficacy-of-three-different-lasers-on-eradication-of-enterococcus-faecalis-and-candida-albicans-biofilms-in-root-canal-system
#16
Silvija Kasić, Marita Knezović, Nataša Beader, Dragana Gabrić, Ana Ivanišević Malčić, Anja Baraba
OBJECTIVE: The objective was to compare the efficacy of three different lasers in disinfection of root canals inoculated with Enterococcus faecalis and Candida albicans biofilms. BACKGROUND: Endodontic space disinfection depends on the type of root canal irrigant used and the way it is delivered and agitated because irrigants have limited ability to reach all parts of root canal system. MATERIALS AND METHODS: Thirty single-rooted human teeth were selected...
July 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28294706/histopathological-microbiological-and-radiographic-analysis-of-antimicrobial-photodynamic-therapy-for-the-treatment-of-teeth-with-apical-periodontitis-a-study-in-rats-molars
#17
Alessandra Cesar Trindade, José Antônio Poli de Figueiredo, Sílvia Dias de Oliveira, Valdir Cristóvão Barth Junior, Stephanie Wagner Gallo, Carina Follmann, Carlos Frederico Brilhante Wolle, Liviu Steier, Renata Dornelles Morgental, João Batista Blessmann Weber
OBJECTIVE: The aim of this study was to evaluate in vivo, by histological and radiographic analysis, the response of apical tissues of rats' teeth with experimentally induced apical periodontitis, after one- and two-session endodontic treatment with and without photodynamic therapy (PDT). A microbiological analysis was also performed to verify bacterial reduction after each treatment. BACKGROUND DATA: Studies carried out in recent years highlighted the antibacterial potential of PDT when associated with conventional endodontic therapy in vitro...
July 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28294701/the-impact-of-a-940%C3%A2-nm-diode-laser-with-radial-firing-tip-and-bare-end-fiber-tip-on-enterococcus-faecalis-in-the-root-canal-wall-dentin-of-bovine-teeth-an-in-vitro-study
#18
Ruth Schulte-Lünzum, Norbert Gutknecht, Georg Conrads, Rene Franzen
OBJECTIVE: This in vitro study aimed to compare the bactericidal effect of two different laser delivery systems, a radial firing tip (RFT) and bare end fiber tip (BFT) used with the 940 nm diode laser on Enterococcus faecalis inoculated onto bovine radicular dentin. MATERIALS AND METHODS: A total of 100 bovine dentin slices with a defined thickness of 500 and 1000 μm were prepared. They were assigned into four test groups together with untreated samples served as control for each slice thickness...
July 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28253064/effects-of-two-diode-lasers-with-and-without-photosensitization-on-contaminated-implant-surfaces-an-ex-vivo-study
#19
Nicola Alberto Valente, Thomas Mang, Michael Hatton, Lynn Mikulski, Sebastiano Andreana
OBJECTIVE: The aim of this ex vivo study is to assess decontamination potential of two different diode laser wavelengths, with or without the aid of photodynamic therapy, on dental implant surfaces and to evaluate the harmful potential of temperature increase during laser irradiation. MATERIALS AND METHODS: One hundred thirty-two machined sterile implants were placed into sterile porcine bone blocks with standardized coronal angular bony defects and inoculated with Streptococcus sanguinis...
July 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28590838/comparative-evaluation-of-effects-of-laser-modalities-on-shear-bond-strengths-of-veneering-porcelains-to-laser-sintered-substructures-an-in-vitro-study
#20
Oguzhan Gorler, Aysegul Goze Saygin
OBJECTIVE: Laser modalities and direct metal laser sintering (DMLS) have a potential to enhance micromechanical bonding between dental super- and infrastructures. However, the effect of different manufacturing methods on the metal-ceramic bond strength needs further evaluation. We investigated the effect of surface treatment with Er:YAG, Nd:YAG, and Ho:YAG lasers on the shear bond strength (SBS) of high-fusion dental porcelains (Vita and G-Ceram) to infrastructures prepared with DMLS in vitro settings...
June 2017: Photomedicine and Laser Surgery
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