dentin hypersensitivity (dh) is a relatively common painful condition among dental problems. although many studies have been performed regarding the diagnosis and treatment of dh, dental practitioners are still confused about the definite diagnosis and treatment.the use of lasers as a treatment for dentin hypersensitivity was first introduced in 1985. laser treatment in dentin hypersensitivity ...

introduction: the main purpose of the present study was to describe the ultra structural changes which happened after treatment of the root surfaces with ultrasonic and hand devices followed by erbium-doped yttrium aluminum garnet (er:yag) laser irradiation. methods: sixty single-rooted maxillary and mandibular teeth which had been extracted due to periodontal problems were collected. crown and...

The Thomson scattering system measures electron density and temperature with the aid of eight pulsed ND-YAG lasers on the DIII–D Tokamak. DIII–D is the United States National Fusion Facility for magnetic confinement fusion experiments. The Thomson system probes the tokamak in three separate regions. The measurements from the different regions produce density and temperature profiles during plas...

conclusions our study showed that the triple therapy of nd: yag and nd: yag + co2 fractional and hydroquinone cream had high efficiency and low morbidity compared to twofold treatment with nd: yag and nd: yag + co2 fractional. results seventeen patients with melasma (14 females and three males) with mean (± sd) age of 38.47 (± 6.29) years (range 29 - 53) were included in this study. the only si...

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...

today laser has a lot of usage in medicine and dentistry. in the field of dentistry, laser is used in soft tissue surgery, sterilization of canals (in root canal therapy) and in restorative dentistry laser is used for cavity preparation, caries removal, sealing the grooves (in preventive dentistry), etching enamel and dentin, composite polymerization and removal of tooth sensitivity. the use of...

operated stably after more than 500h. In conclusion, we obtained a nearly round FFP in the 650nm band wavelength using the S3-laser. The laser had good I-L characteristics and good reliability at lOmW and 60°C. We consider that the laser could be of use as a light source in optical disk systems. and TERAMOTO, I.: 'Novel technology for formation of a narrow active layer in buried heterostructure...

path of microleakage between the enamel and adhesive potentially allows microbial ingress that may consequently cause enamel decalcification. the aim of this study was to compare microleakage of brackets bonded either by laser or acid etching techniques.the specimens were 33 extracted premolars that were divided into three groups as the acid etching group (group 1), laser etching with er:yag at...

introduction: recurrent corneal erosion occurs when the wounded corneal epithelium failed to adhere to the underlying stroma. therefore, this work aimed to assess the effect of treatment of corneal injury using q- switched nd:yag laser.  method: twenty one new zealand male rabbits weighing 2-2.5 kg and 3 months old were classified into three main groups. the control group: did not received any ...

Vaginal laxity is a condition that often occurs in women, especially after vaginal delivery, and its prevalence increases with age. This review aimed to explain the role of fractional Erbium laser as new modality for management. The typical symptom reported by patients was reduced sensation. One therapeutic option laser: yttrium aluminum garnet (Er: YAG) at 2,940 nm frequencies. laser's thermal...