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Laser pain

Mehmet Cemal Kahya, Oğuz Sebik, Kemal S Türker
Painful stimulation of the hand results in an inhibitory response in the hand muscles known as the cutaneous silent period (CSP). In this study, we employed probability- and frequency-based analysis methods to examine the CSP induced by laser stimuli. Subjects were asked to contract their first dorsal interosseous muscle so that selected motor units discharged at a rate of about 8Hz. Laser pulses were delivered to the palm of the hand, and reflex responses were recorded. The stimuli generated CSP in all test subjects...
October 14, 2016: Journal of Electromyography and Kinesiology
Korgün Ökmen, Burcu Metin Ökmen
This study aims to investigate the efficacy of three different percutaneous intradiscal therapies in patients with chronic low back pain (CLBP) due to lumbar disc herniation (LDH). Medical files of a total of 120 patients who received percutaneous intradiscal therapy were retrospectively analyzed. All patients were divided into three groups: group L: diode laser (n = 40), group R: radiofrequency (RF) (n = 40), and group P: pulsed radiofrequency (PRF) (n = 40). The visual analogue scale (VAS) and Oswestry Disability Index (ODI) scores were calculated at 1, 3, 6, and 12 months for all patients...
October 21, 2016: Lasers in Medical Science
K Ye, R Wang, J Qin, X Yang, M Yin, X Liu, M Jiang, X Lu
OBJECTIVE: The hypothesis that post-operative short-term compression therapy improves operation related complications in patients with uncomplicated varicose veins after endovenous laser ablation (EVLA) treatment was tested. METHODS: In this randomized trial, patients with uncomplicated varicose veins (C2 according to the CEAP classification) treated with EVLA at a single institution from January 2012 to November 2013 were enrolled. Before EVLA, patients were randomized into two groups based on whether or not (control group) they wore an elastic compression stocking (ECS group) post-operatively...
October 16, 2016: European Journal of Vascular and Endovascular Surgery
Massimo Del Fabbro, Stefano Corbella, Patrick Sequeira-Byron, Igor Tsesis, Eyal Rosen, Alessandra Lolato, Silvio Taschieri
BACKGROUND: When primary root canal therapy fails, periapical lesions can be retreated with or without surgery. Root canal retreatment is a non-surgical procedure that involves removal of root canal filling materials from the tooth, followed by cleaning, shaping and obturating of the canals. Root-end resection is a surgical procedure that involves exposure of the periapical lesion through an osteotomy, surgical removal of the lesion, removal of part of the root-end tip, disinfection and, commonly, retrograde sealing or filling of the apical portion of the remaining root canal...
October 19, 2016: Cochrane Database of Systematic Reviews
Mario Migliario, Manuela Rizzi, Alberta Greco Lucchina, Filippo Renò
The gold standard to arrange impacted teeth in the dental arch is represented by a surgical approach followed by orthodontic traction force application. In the literature, many surgical approaches are proposed to reach such a scope. The aim of the present study is to demonstrate how laser technique could positively assist surgical approaches.Study population was composed by 16 patients undergoing orthodontic treatment of 20 impacted teeth. In 10 patients (population A) surgical exposure of the impacted teeth was performed using a 980 nm diode laser, while in the other 10 patients (population B), surgical incision was performed using a traditional lancet...
October 14, 2016: Journal of Craniofacial Surgery
Amita Rani, Sujata Mohanty, Pankaj Sharma, Jitender Dabas
INTRODUCTION: Alveolar osteitis (AO) is a well-known complication following tooth extraction. Plethora of literature is available regarding its treatment modalities signifying that none of the treatment is as effective as any another treatment. LASER on the other hand, has been used to promote soft tissue healing. MATERIAL AND METHOD: In order to evaluate the effects of laser on healing of AO we undertook a randomized clinical trial. In the trial, sixty patients diagnosed with AO were randomly divided into three groups viz: alvogyl, diode laser and Er:Cr:YSGG laser (erbium chromium yttrium scandium gallium garnet)...
September 2016: Journal of Maxillofacial and Oral Surgery
Nikele Nadur-Andrade, Camila Squarzoni Dale, Victoria Regina da Silva Oliveira, Elaine Flamia Toniolo, Regiane Dos Santos Feliciano, José Antonio da Silva, Stella Regina Zamuner
BACKGROUND: Envenoming induced by Bothrops snakebites is characterized by drastic local tissue damage that involves an intense inflammatory reaction and local hyperalgesia which are not neutralized by conventional antivenom treatment. Herein, the effectiveness of photobiomodulation to reduce inflammatory hyperalgesia induced by Bothrops moojeni venom (Bmv), as well as the mechanisms involved was investigated. METHODOLOGY/PRINCIPAL FINDINGS: Bmv (1 μg) was injected through the intraplantar route in the right hind paw of mice...
October 2016: PLoS Neglected Tropical Diseases
Aris Oates, Kelly A Benedict, Karen Sun, Paul R Brakeman, Jessica Lim, Cynthia Kim
Evaluate laser acupuncture as an adjuvant therapy in pain management during percutaneous kidney biopsy procedure in children and adolescents. This prospective, double-blinded, randomized controlled trial enrolled patients aged 7-26 years admitted to a children's hospital for percutaneous kidney biopsy. Patients received laser acupuncture to treatment points (acupuncture group) or sham points (control group) prior to the procedure. Laser delivered a dose of 42 J/cm over 10 acupoints. Patients and parents rated the pain during and after the biopsy, and change in pain scores were calculated for each patient...
September 29, 2016: Pain
Andrea K Murray, Tonia L Moore, Elizabeth Wragg, Holly Ennis, Andy Vail, Graham Dinsdale, Lindsay Muir, Christopher E M Griffiths, Ariane L Herrick
OBJECTIVES: Systemic sclerosis (SSc)-related digital ulcers (DU) cause significant pain and disability and are often a primary endpoint in clinical trials. However, their pathophysiology has been little studied. The objectives of this prospective study were to determine whether laser Doppler imaging (LDI) and thermography can identify ischaemic components in both fingertip and extensor surface DU and assess ulcer healing. METHODS: Patients prospectively reported new DU over a year...
September 2016: Clinical and Experimental Rheumatology
Shunichi Suzuki, Eduardo Enrique Castrillon-Watanabe, Taro Arima, Yoshimasa Kitagawa, Peter Svensson
BACKGROUND: Myofascial pain associated with temporomandibular disorders has often been linked to pathological muscle hyperactivity. As a result, localized disturbances of intramuscular blood flow could lead to a lower level of oxygen distribution, hypoxia and microcirculatory changes. AIM: To assess hemodynamic changes in the masseter muscle during sustained elevated muscle activity (SEMA). MATERIALS AND METHODS: Sixteen healthy participants performed thirty 1-minute bouts of SEMA with intervals of 1-minute "rest" periods between the bouts on a bite force transducer device...
October 15, 2016: Journal of Oral Rehabilitation
Francesca Pistoia, Simona Sacco, Janet Stewart, Marco Sarà, Antonio Carolei
The experience of pain in disorders of consciousness is still debated. Neuroimaging studies, using functional Magnetic Resonance Imaging (fMRI), Positron Emission Tomography (PET), multichannel electroencephalography (EEG) and laser-evoked potentials, suggest that the perception of pain increases with the level of consciousness. Brain activation in response to noxious stimuli has been observed in patients with unresponsive wakefulness syndrome (UWS), which is also referred to as a vegetative state (VS), as well as those in a minimally conscious state (MCS)...
October 8, 2016: Brain Sciences
Felice Femiano, Rossella Femiano, Alessandro Lanza, Michele Lanza, Letizia Perillo
This study compares sensitivity reduction after dental restoration with and without prior diode laser (DL) irradiation for cervical dentine hypersensitivity (CDH) from non-carious cervical lesions (NCCLs) unresponsive to desensitizing agents. Eighty-eight teeth of 28 subjects (21 females; age 23-64 years), with CDH from NCCL were included in this study. NCCLs of each oral quadrant were randomized in two groups (study group (SG)) to estimate the sensitivity reduction after dental restoration (SG-1) compared with the DL irradiation used prior to restoration placement (SG-2)...
October 12, 2016: Lasers in Medical Science
Ning Wang, Sheng-Guang Li, Xiao-Xiao Lin, Yuan-Lin Su, Wei-Jing Qi, Jin-Yan Wang, Fei Luo
Although previous studies have suggested that depression may be associated with inhibition of evoked pain but facilitation of spontaneous pain, the mechanisms underlying these relationships are unclear. The present study investigated whether the difference between evoked and spontaneous pain on sensory (descending inhibition) and affective (avoidance motivation) components contributes to the divergent effects of depression on them. Depressive-like behavior was produced in male Wistar rats by unpredictable chronic mild stress (UCMS)...
2016: Frontiers in Behavioral Neuroscience
William T Kuo, Justin I Odegaard, Jarrett K Rosenberg, Lawrence V Hofmann
BACKGROUND: Many patients are subjected to the potential risks and morbidity associated with an indwelling IVC filter when standard methods fail to remove the filter. We evaluated the safety and effectiveness of the excimer laser-sheath technique for removing embedded IVC filters. METHODS: Over a 5-year period, 251 consecutive patients undergoing laser-assisted filter retrieval were prospectively enrolled. There were 103 men and 148 women (mean:46 years, range:15-82)...
October 8, 2016: Chest
Andrew M Read-Fuller, David M Yates, David D Vu, John E Hoopman, Richard A Finn
OBJECTIVE: Facial resurfacing with a CO2 laser has been used for treatment of pathologic lesions and for cosmetic purposes. Postoperative complications and problems after laser resurfacing include infections, acneiform lesions, and pigment changes. This retrospective study describes the most common problems and complications in 105 patients and assesses postoperative pain in 38 patients. STUDY DESIGN: All patients received CO2 laser resurfacing for treatment of malignant/premalignant lesions and had postoperative follow-up to assess problems and complications...
August 23, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Vanessa Lima Cavalcante de Oliveira, José Antonio Silva, Andrey Jorge Serra, Rodney Capp Pallotta, Evela Aparecida Pereira da Silva, Anna Cristina de Farias Marques, Regiane Dos Santos Feliciano, Rodrigo Labat Marcos, Ernesto Cesar Pinto Leal-Junior, Paulo de Tarso Camillo de Carvalho
The objective of this study was to evaluate the effects of photobiomodulation therapy (PBMT) on inflammatory indicators, i.e., inflammatory mediators (TNF-α and CINC-1), and pain characterized by hyperalgesia and B1 and B2 receptor activation at 6, 24, and 48 h after papain-induced osteoarthritis (OA) in rats. Fifty-four rats were subjected to hyperalgesia evaluations and then divided randomly into three groups-a control group and two groups OA and OA PBMT group by using laser parameters at wavelength (808 nm), output power (50 mW), energy per point (4 Joules), power density (1...
October 10, 2016: Lasers in Medical Science
Maurits R Hollander, Maarten A H van Leeuwen, Dirk van der Heijden, Vincent M N Keizer, Peter M van de Ven, Sander J J IJsselmuiden, Nicolas M Van Mieghem, Giovanni Amoroso, Marco J P F Ritt, Paul Knaapen, Niels van Royen
AIMS: During transradial coronary catheterization the radial artery is functionally occluded and hand perfusion depends on the collateral circulation. Nexfin is a simple, non-invasive technique to measure digital arterial pressure and could serve to quantify the palmar collateral circulation. Potentially, inter-individual differences in the extent of collateralization are related to perfusion and function after transradial intervention. METHODS AND RESULTS: In total 85 adults were included (18 healthy volunteers; 67 patients who underwent transradial catheterization)...
October 11, 2016: EuroIntervention
Sheevam Shah, Katherine H Fiala
Chondrodermatitis nodularis helicis (CNH) is characterized by a tender nodule located on the helix or antihelix. Age groups impacted by CNH vary from study to study, but the majority of studies report an average age range from 50 to 80 years. Various treatment options have been described in the literature, including surgical techniques, laser therapy, curettage, topical and intralesional corticosteroids, and pressure relieving techniques. The main goal of therapy is to reduce pain and improve clinical appearance...
October 9, 2016: Dermatologic Therapy
Shahin Bayani, Shima Rostami, Farzaneh Ahrari, Iman Saeedipouya
Background and aims: This study aimed to evaluate the efficacy of ibuprofen, bite wafer and low power red and infrared lasers in orthodontic pain management. Subjects and methods: One hundred subjects were randomly assigned to 5 groups of 20 each. The patients in each group received one of the following treatments after the placement of fixed orthodontic appliances: 1. placebo medication, 2. ibuprofen, 3. bite wafer, 4. irradiation from a low level red laser (LLRL; 660 nm, 200 mW, 1 J/point, 6 points), 5. irradiation from a low level infrared laser (LLIL; 810 nm, 200 mW, 1 J/point, 6 points)...
June 29, 2016: Laser Therapy
Shariq Najeeb, Zohaib Khurshid, Sana Zohaib, Bilal Najeeb, Saad Bin Qasim, Muhammad Sohail Zafar
BACKGROUND AND OBJECTIVE: The exact etiology of recurrent aphthous ulcers (RAS) is unknown. The management of RAS is not always straightforward. The aim of this review is to critically analyze and summarize the clinical literature focusing on the management of aphthous ulcers using low-level lasers. MATERIALS AND METHODS: The Medline (PubMed), Web of Knowledge (ISI), Cochrane Central Register of Controlled Trials (CENTRAL) and Embase databases were searched electronically for studies published in last 20 years (1995-2015) using the keywords "recurrent aphthous stomatitis," "aphthous ulcers," and "laser...
September 15, 2016: Medicina
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