background and aims. the aim of this study was to compare shear bond strength (sbs) of metal and ceramic brackets bonded to enamel using acid versus er:yag laser etching. materials and methods. eighty premolars were divided into 4 groups: am (acid etching/ metal brackets), ac (acid etching/ ceramic brackets), lm (laser etching/ metal brackets) and lc (laser etching/ ceramic brackets). enamel co...

a hypertrophic scar is defined as an excess healing response that is a dilemma for physicians. several therapies are available: intralesional corticosteroids, topical treatments, cryotherapy, surgery, radiation, silicone gel dressing and laser therapy.pulsed-dye, nd-yag and co2 lasers have been used for treatment of keloids and hypertrophic scars but recurrence is common. recently low-level las...

abstract background: in recent years, the endovenous laser therapy (evlt) has been proposed to treat the incompetent greater saphenous veins (gsv) to increase patient comfort,and to reduce cost as well as risk. evlt causes vein wall thickening, luminal contraction and vein fibrosis. the purpose of this article, as the first report from iran, is to review our experience and outline the early res...

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introduction: the aim of this study was to evaluate and compare the scanning electron microscope (sem) of indirect composite conditioned by erbium-doped yttrium aluminum garnet (er:yag) laser, neodymium-doped yttrium aluminium garnet (nd:yag) laserand carbon dioxide (co2) laser. methods: 18 indirect composite blocks (gc gradia da2, japan) with 15 × 10 × 10 mm dimensions were made. the bonding s...

statement of the problem: recurrent aphthous stomatitis (ras) is one of the most common lesions in the oral cavity. due to its multifactorial nature, there is no definitive treatment for ras. laser therapy is one of the suggested treatments to reduce patient’s discomfort. purpose: the purpose of the present clinical trial is to assess the effect of low and high level laser therapy on pain contr...

Introduction: Laser tissue soldering is a new technique for repair of various tissues including the skin, liver, articular cartilage and nerves and is a promising alternative to suture. To overcome the problems of thermal damage to surrounding tissues and low laser penetration depth, some exogenous chromophores such as gold nanoshells, a new class of nanoparticles consisting of a dielectric cor...