نتایج جستجو برای: diode

تعداد نتایج: 20961  

A Azizi, AR Mirzaei, N Gutknecht, N Moezzi ghadim, S Chaychi salmas, S Shahbazi, SH lawaf,

Background and Aim: Diode laser is a great choice for soft tissue surgery. The diode laser is partially absorbed by hard dental tissues, making it safe for soft tissue surgery. This study aimed to compare the tissue thermal changes induced by three types of diode lasers at 810, 940, and 980nm wavelengths. Materials and Methods: In this in-vitro experimental study, using a diode laser device (c...

Background and Aim: Bacterial disinfection is considered as the primary etiology of pulpal and periapical lesions and as the result, adequate elimination of such infections is one of the purposes of root canal treatment; But since this purpose is impossible to achieve, reducing the bacterial load seems to be as a rational goal. Diode lasers have made their way into endodontics for better disinf...

ژورنال: سنجش و ایمنی پرتو 2013

The ionizing radiations are able to make either a permanent or temporarily damage in the electronic circuits. The temporary effects during irradiation can be used to detect the ionizing radiation. In this study a diode in reverse bias has been used to investigate the effects of ionization radiation on semiconductors. The variation of reverse current of diode has been monitored due to interactio...

Introduction: Nowadays, the main focus of dental studies is on adhesive dental materials; since clinical long-term success of bonded restorations depended more on marginal microleakage minimization. So, the aim of this study was Evaluation of Diode laser irradiation effect on microleakage in class V composite restoration before and after adhesive application. Materials and methods: In this in v...

Journal: :journal of dentistry, tehran university of medical sciences 0
zahra bahrololoomi faezeh fotuhi ardakani milad sorouri

objectives: fluoride therapy is important for control and prevention of dental caries. laser irradiation can increase fluoride uptake especially when combined with topical fluoride application. the objective of this study was to compare the effects of co 2 and diode lasers on enamel fluoride uptake in primary teeth. materials and methods: forty human primary molars were randomly assigned to fou...

Bordera Gabriel Buendia Giménez Maribel Marti Marmol Gregorio Viera Morell Jiuia Oliva Parada Jorge Gaviria Pérez Maria de los Llanos

The use of high-power diode laser with a wavelength of 755 nm is an effective and safe method for the correction and partial and/or total elimination of pigmented lesions, specifically solar lentigines. This wavelength has yet not been used in diode lasers to treat solar lentigines. Side effects are the usual ones, including darkening and scab formation. Our patient was a 40-year-old woman of C...

Journal: :journal of lasers in medical sciences 0
liu ying nanfang hospital, southern medical university, colleg of stomatology, southern medical university jie gao department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china. yan gao center of oral implantology, guangdong provincial stomatological hospital, southern medical university,510280 guangzhou, p.r. china. shuaimei xu department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china. xueling zhan department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china. buling wu department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china.

introduction: to investigate the ultrastructural changes of dentin irradiated with 980-nm diode laser under different parameters and to observe the morphological alterations of odontoblasts and pulp tissue to determine the safety parameters of 980-nm diode laser in the treatment of dentin hypersensitivity (dh). methods: twenty extracted human third molars were selected to prepare dentin discs. ...

This paper presents the comparative study of three phase twenty five level diode clamped and cascaded H-bridge multilevel inverters. The comparison is made in respect of requirement of devices, quality of output voltage and reduction of total harmonic distortion at the multilevel inverter terminals. In this work multicarrier sinusoidal pulse modulation control methods of Phase disposition (PD-P...

Introduction: Residual oxygen-free radicals of bleaching agents before composite restorations can increase microleakage in enamel and dentin margins, and also various bleaching techniques are being developed using light sources. The present study was conducted to compare the effect of diode laser bleaching and LED activated bleaching on the microleakage of composite restorations. Materials & M...

Journal: :journal of lasers in medical sciences 0
reza birang department of periodontology, school of dentistry, isfahan university of medical sciences, isfahan, iran jaber yaghini department of periodontology, school of dentistry, isfahan university of medical sciences, isfahan, iran mahdi adibrad department of periodontology, school of dentistry, isfahan university of medical sciences, isfahan, iran sima kiany dentist, private practice, isfahan, iran zinab mohammadi dentist, private practice, isfahan, iran ehsan birang dentist, private practice, isfahan, iran

introduction: the aim of the present study was to investigate the effects of srp assisted by the two clinical treatment methods of diode laser or chlorhexidine gel applications in comparison with srp alone. methods: eight patients with moderate to severe chronic periodontitis, each with at least three pockets 4–7 mm deep, were selected for this study. over 66 pockets were selected and randomly ...

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