نتایج جستجو برای: laser treatment
تعداد نتایج: 1560743 فیلتر نتایج به سال:
background and aims. the aim of the present study was to compare the effect of surface treatment with er; cr:yssg, nd:yag, and co2 lasers on repair shear bond strength of a silorane-based composite resin. materials and methods. sixty eight cylindrical samples of a silorane-based composite resin (filtek silorane) were prepared and randomly divided into 4 groups as follows: group 1: without surfa...
rhinophyma is a severe late complication of rosacea, which is characterized by progressive hyperplasia of sebaceous glands and connective tissue involving the lower two-thirds of the nose. it can be an emotionally devastating disorder, and serve as a medium for occult cancers and other health problems. many surgical treatments have been advocated, as well as dermabrasion and laser therapy. in l...
the incidence of stone disease among patients with congenital renal anomalies including malrotated kidney is more than in normal population due to poor urine drainage and stasis (1). various minimally invasive options have been used for the management. ureteroscopy and holmium:yag laser lithotripsy have been reported with favorable outcomes (2). we report a 30-year-old male who presented to our...
Background: To assess the effectiveness of repeated transvaginal ultrasound-guided ovarian interstitial laser treatment in the management of anovulatory patients with polycystic ovary syndrome (PCOS). Materials and Methods: A retrospective study was performed in our department on 27 anovulatory PCOS women who failed to respond to the first ultrasound-guided transvaginal ovarian interstitial las...
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
Background and aim: It is possible to use light sources suxh as lasers to destruct melanosomes and treat pigmented skin lesions. One of the most commonly used laser systems is Q switched ruby laser with a wave-length of 694 nm. This study was performed to evaluate the efficacy of the Q switched ruby laser in the treatment of pigmented skin lesions including lentigines (simplex or solar) and caf...
Aim and Background: Knee osteoarthritis (OA) is a prevalent and disabling disease. Periarticular corticosteroid injection has been traditionally used for the pain control in these patients. Recently low power laser has been introduced as a therapeutic option. This study was conducted to evaluate the efficacy of Low pow...
Background and purpose: Prevention of dental caries is one of the primary goals in dentistry. Application of fluoride decreased dental demineralization but the preventive ability of this fluoride is limited. Nowadays different investigations into dental erosion focused on the preventive effect of laser irradiation. The purpose of this applied study was to assess the effect of diode laser (&lamb...
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...
Objective: The aim of this study was to evaluate and compare the effect of dental surface treatment with Er:YAG , Nd:YAG ,CO2 lasers and sodium ascorbate to recently laser bleached enamel by scanning electron microscope (SEM). Methods: 15caries-free extracted human third molars were selected for this study. The samples were bleached by Heydent JW power activated by diode laser 810 nm. After 7 d...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید