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Laser Therapy

Katsumi Sasaki, Toshio Ohshiro, Takafumi Ohshiro, Reiko Sakio, Emi Fukazawa, Masahiro Toriumi, Tamotsu Ebihara
BACKGROUND AND AIM: Minocycline therapy for acne vulgaris is associated with the occasional induction of various types of unsightly and often persistent hyperpigmentation, which is frequently resistant to hydroquinone treatment. Pigment-specific lasers have achieved some success with multiple treatment sessions. Recently, the picosecond domain 755 nm alexandrite laser (ps-Alex) has attracted attention in tattoo removal. The present study reports on the successful treatment, in a single ps-Alex session, of minocycline-associated pigmentation...
June 30, 2017: Laser Therapy
Hyeyeon Kim
BACKGROUND AND AIMS: A paradigm shift towards noninvasive body contouring has occurred over the past few years. Radiofrequency (RF) is one popular treatment method. Noncontact-type RF systems with frequencies in the tens of megahertz represent a novel approach. The current pilot study investigated the efficacy of an interesting combination of extracorporeal shock wave therapy (ESWT) and an apoptosis-inducing RF (AiRF) system for circumferential reduction. SUBJECTS AND METHODS: Twenty-seven females, ages ranging from 13-69 years, (mean age 37...
June 30, 2017: Laser Therapy
Toni Zeinoun, Zeina Majzoub, Carlos Khoury, Samir Nammour
BACKGROUND AND OBJECTIVES: Autogenous gingival grafts are considered the "gold standard" for gingival augmentation, however they require a second surgical site for graft harvesting. Apically positioned flaps (APFs) represent an alternative method in soft tissue augmentation procedures. Limited information is available relative to the effectiveness of laser-mediated APF in augmenting keratinized gingiva (KG). The aim of this paper is to evaluate soft tissues changes following APF using CO2 laser in mandibular incisors with minimal KG and high labial frenum attachment...
June 30, 2017: Laser Therapy
Reza Fekrazad, Ahmad Najafi, Ramona Mahfar, Mahshid Namdari, Mohadese Azarsina
BACKGROUND AND AIMS: The aim was comparison of enamel remineralization after application of APF, TiF4 and CO2 laser alone or in combination. MATERIALS AND METHODS: Enamel blocks were prepared from human third molars. The initial surface hardness was determined by Vicker's hardness tester. The samples underwent a demineralization regimen for 7 days to produce artificial initial caries. The hardness of enamel blocks with white spot lesions was measured, and the samples which had the mean hardness change of 65-90%, were selected, and randomly divided into 5 groups (N=15): G1: control; G2: APF 1...
June 30, 2017: Laser Therapy
Hosein Eslami, Paria Motahari, Ebrahim Safari, Maryam Seyyedi
BACK GROUND AND AIM: production of collagen by fibroblast cells is a key component in wound healing. Several studies have shown that low level laser therapy (LLLT) and propolis extract stimulate collagen Type I production. The aim of this study is to evaluation the combined effect of LLL helium neon (632.8 nm) and Iranian propolis extract on collagen Type I gene expression by human gingival fibroblasts (HGF3-PI 53). METHODS AND MATERIALS: Human gingival fibroblasts after culturing divided into six experimental groups: G1-control group, which received no irradiation and propolis extract, G2-irradiated at1...
June 30, 2017: Laser Therapy
Maryam Pourhajibagher, Hosein Kazemian, Nasim Chiniforush, Abbas Bahador
BACKGROUND AND AIMS: Pandrug-resistant Acinetobacter baumannii (PDRAB) are including colistin resistant starins (CoRAB) which cause infections potentially untreatable infections. Recently, incidence of these strains are increasing worldwide. Therefore, new approaches, methods and strategies are urgently needed for treatment and eradication of infections due to PDRAB. So the aim of this study was to evaluate the efficacy of photodynamic therapy (PDT) in combination treatment with colistin against PDRAB...
June 30, 2017: Laser Therapy
Ladan Ranjbar Omrani, Shayan Farjadfar, Parham Pedram, Sima Sadray, Sedighe Sadat Hashemi Kamangar, Nasim Chiniforoush
BACKGROUND AND AIMS: Bleaching might affect structural properties of composite materials, and lead to monomer release. This study aimed to evaluate the effect of Laser-assisted and conventional in-office bleaching on the release of BIS-GMA, TEGDMA, and UDMA monomers from a nanohybrid and a microhybrid BIS-GMA based composite. MATERIALS AND METHODS: 32 samples of each composite, were divided into 4 subgroups; subgroup 1: Conventional in-office bleaching (CIB) with the Opalescence Boost PF 38% gel, subgroup 2: Laser-assisted bleaching (LBO) with the Opalescence Boost PF 38% gel, subgroup 3: Laser-assisted bleaching (LBH) with the JW Power bleaching gel, subgroup 4: (CO) control without bleaching...
June 30, 2017: Laser Therapy
Toshio Ohshiro
No abstract text is available yet for this article.
June 30, 2017: Laser Therapy
Pornpat Theerasopon, Tasanee Wangsrimongkol, Sajee Sattayut
BACKGROUND: Although surgical treatment protocols for cleft lip and palate patients have been established, many patients still have some soft tissue defects after complete healing from surgical interventions. These are excess soft tissue, high attached fraena and firmed tethering scares. These soft tissue defects resulted shallowing of vestibule, restricted tooth movement, compromised periodontal health and trended to limit the maxillary growth. The aim of this case report was to present a method of correcting soft tissue defects after conventional surgery in cleft lip and palate patient by using combined laser surgery and orthodontic appliance...
March 31, 2017: Laser Therapy
Nitesh Tewari, Vijay Prakash Mathur, Asit Mridha, Kalpana Bansal, Divesh Sardana
BACKGROUND: Peripheral ossifying fibroma associated with neonatal tooth extraction is a rare, benign reactive lesion, but its nature and location often scares the patient & parents for possibility of neoplasm. A high recurrence rate makes its histopathological examination and long term follow up important. CASE REPORT: A 2 months old boy presented with enlarging soft tissue growth on the anterior mandibular ridge. The history revealed extraction of two neonatal teeth at 2 weeks of age...
March 31, 2017: Laser Therapy
Tae-Rin Kwon, Jong Hwan Kim, Seok Joon, Seok Kyun Mun, Chan Woong Kim, Beom Joon Kim
BACKGROUND AND AIMS: Abdominal circumferential reduction with noncontact high frequency apoptosis-inducing field RF (AiRF) is becoming very popular. The present study compared the treatment results from two different sets of parameters giving the same dose from the same system in an in vivo porcine model. MATERIALS AND METHODS: Two 10 cm × 10 cm areas were symmetrically marked on both sides of the midline (total of 4 areas) over the rectus abdominis muscle of two anesthetized female micropigs...
March 31, 2017: Laser Therapy
Tokuya Omi
BACKGROUND AND AIMS: Laser hair removal has recently become a major indication. Diode lasers have become commercially available offering two modes of application: a stamping or static mode, and a dynamic mode whereby the handpiece is continuously moved across the target tissue. The present study was designed to compare the efficacy of these two approaches clinically and histologically. SUBJECTS AND METHODS: Twenty-five subjects participated in the study, 12 males and 13 females, ages ranging from 20 to 57 yr (Mean age 41...
March 31, 2017: Laser Therapy
Clara Gómez, Juan Carlos Palma, Ángel Costela
BACKGROUND AND AIMS: After bracket debonding a correct removal of the adhesive from tooth surfaces without causing any iatrogenic damage to the enamel is needed. However, conventional techniques do not allow a selective removal process. The present article focuses on the removal of adhesive on teeth after bracket debonding by using laser radiation at 355 nm (third harmonic wavelength of a Q-switched Nd:YAG). MATERIAL AND METHODS: Brackets were bonded to 10 extracted human premolars from young patients and removed after a storage period of 2 months...
March 31, 2017: Laser Therapy
Hideaki Izukura, Midori Miyagi, Takashi Harada, Toshio Ohshiro, Satoru Ebihara
BACKGROUND AND AIMS: Chronic foot and ankle joint pain is one of the most frequent complaints which is regularly seen in the out-patient clinic of our medical institute. In previous studies we have reported on the benefits of low level laser therapy (LLLT) for chronic pain in the elbow, hand, finger and the lower back. The present study examined the effects of LLLT on chronic foot and ankle joint pain. MATERIALS AND METHODS: Over the past 5 years, 17 subjects visited the out-patient clinic with complaints of chronic foot and ankle joint pain of a variety of aetiologies...
March 31, 2017: Laser Therapy
Ahmed El Gamal, Jean Paul Rocca, Carlo Fornaini, Etienne Medioni, Nathalie Brulat-Bouchard
BACKGROUND AND AIMS: The aim of this study was to measure the microhardness values of irradiated computer-aided design/computer-aided manufacturing (CAD/CAM) ceramics surfaces before and after thermal treatment. MATERIALS AND METHODS: Sixty CAD/CAM ceramic discs were prepared and grouped by material, i.e. lithium disilicate ceramic (Emax CAD) and zirconia ceramic (Emax ZirCAD). Laser irradiation at the material surface was performed with a carbon dioxide laser at 5 Watt (W) or 10 W power in continuous mode (CW mode), or with a neodymium:yttrium aluminum perovskite (Nd:YAP) laser at 10 W on graphite and non-graphite surfaces...
March 31, 2017: Laser Therapy
Ayano Uekubo, Koichi Hiratsuka, Akira Aoki, Yasuo Takeuchi, Yoshimitsu Abiko, Yuichi Izumi
Aims: A combination of rose bengal (RB) and blue LED (BL) has emerged as a new technical modality for antimicrobial photodynamic therapy (a-PDT). The purpose of this study was to clarify the influence of oxygen on the antimicrobial effect of RB + BL treatment on Porphyromonas gingivalis in vitro.Materials and Methods:P. gingivalis cells were treated with RB, BL (450-470 nm; 1 W/cm(2), 5 s), or RB + BL under anaerobic/aerobic conditions. Cells were incubated anaerobically, and the cell density (OD600 nm) was measured after 6-48 h...
December 30, 2016: Laser Therapy
Gyanendra Kumar, Jatinder Kaur Dhillon, Ferah Rehman
Aim: The aim of this study was to compare the retention rates of sealant placed either with conventional acid etching or Er,Cr:YSGG laser pretreatment of enamel surface. Materials and methods: This is a prospective, single blind randomised controlled clinical trial enrolling 200 permanent first molars in 50 patients, aged 6-12 years for sealant placement. Study followed split mouth design where each side of the arch was randomly allocated to the two treatment group. Group A(Acid etch group): 37 % phosphoric acid (Scotchbond, 3M ESPE, Seefeld, Germany) was applied for 15 seconds, rinsed with water for 20 seconds and then air-dried using air spray...
December 30, 2016: Laser Therapy
Alfonso Tramontana, Roberto Sorge, Juan Carlos Miangolarra Page
Background and aims: The intervertebral disk degeneration is a pathological process determined by a decrease of mucopolysaccharides in the nucleus pulposus with the consequent dehydration and degeneration of the elastic fibers in the annulus fibrosus of the disk. The laser is a therapeutic tool that has, on the treated tissues, biostimulation effects with an increase of oxidative phosphorylation and production of ATP with an acceleration of the mucopolysaccharides synthesis with a consequent rehydration, biostimulation and production of new elastic fibers...
December 30, 2016: Laser Therapy
Junya Takada, Norihiro Honda, Hisanao Hazama, Naomasa Ioritani, Kunio Awazu
Background and Aims: Laser vaporization of the prostate is expected as a less invasive treatment for benign prostatic hyperplasia (BPH), via the photothermal effect. In order to develop safer and more effective laser vaporization of the prostate, it is essential to set optimal irradiation parameters based on quantitative evaluation of temperature distribution and thermally denatured depth in prostate tissue. Method: A simulation model was therefore devised with light propagation and heat transfer calculation, and the vaporized and thermally denatured depths were estimated by the simulation model...
December 30, 2016: Laser Therapy
Nazanin Kiomars, Pouneh Azarpour, Mansooreh Mirzaei, Sedighe Sadat Hashemi Kamangar, Mohammad Javad Kharazifard, Nasim Chiniforush
Subject and aim: The aim of this study was to evaluate the efficiency of diode laser-activated bleaching systems for color change of teeth. Materials & Methods: 40 premolars with intact enamel surfaces were selected for five external bleaching protocols (n=8). Two different wavelengths of diode laser (810 and 980 nm) with two different hydrogen peroxide concentrations (30% and 46%) were selected for laser bleaching. Group 1 received bleaching (Heydent- Germany) with a 810 nm diode laser; Group 2 received bleaching (Heydent- Germany) with a 980 nm diode laser; Group 3 received bleaching (laser white*20- Biolase) with a 810 nm diode laser; Group 4 received bleaching (laser white*20- Biolase) with a 980 nm diode laser, with an output power of 1...
December 30, 2016: Laser Therapy
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