Particles accumulated in a coupled acoustic-gravity field, in which the base-material of a particle determines the equilibrium aggregation positions, are eluted from a separation channel by an orthogonal laminar flow. Elution times are controllable by changing the intensity and frequency of the ultrasonic waves.

introduction: despite a growing popularity of noninvasive ultrasonic lipolysis procedure, there is a lack of evidence about the efficacy of this method. this study was performed to evaluate the efficacy of focused ultrasonic lipolysis on abdominal cellulite treatment. methods: twenty-eight consecutive subjects (age: 37.8 ± 8 years) underwent weekly transdermal focused ultrasonic lipolysis (med ...

Aim and objective: This study was conducted to evaluate and compare the effectiveness of various root planing instruments, namely the curette, standard smooth ultrasonic tip and diamond coated ultrasonic tip under conditions of nonsurgical root debridement. Materials and methods: A total of 20 incisors from 14 patients, with a pocket depth of 5 to 10 mm, indicated for extraction were selected f...

Increasing number of ultrasonic applications reflects the potential of this method. As broader is the range of areas involved in ultrasonic measurement, the more essential becomes the question of a universal concept of the equipment for generating and acquiring the ultrasonic data. Ideas and problems met here we would like to share in this publication. The ultrasonic non-destructive evaluation ...

In this study, an ultrasonic irradiation technique was utilized to mitigate the fouling of polyethersulfone (PES) and polyvinylidene fluoride (PVDF) membranes. The use of ultrasound at 20 kHz was applied to a dead-end microfiltration cell in order to mitigate fouling caused by the presence of colloidal bentonite particles. The effect of ultrasonic power and pulse duration on the permeate flux r...

This study assessed the effect of different etching time of hydrofluoric acid and ultrasonic cleaning of the etched ceramic surface on the resin microtensile bond strength stability to a feldspathic ceramic. The research hypotheses investigated were: (1) different etching time does not affect the adhesion resistance; (2) ultrasonic cleaning improves the adhesion resistance. Forty-eight (48) blo...

introduction: periodontitis is an inflammatory periodontal disease that leads to tooth loss. recently laser has been introduced as an alternative treatment for periodontitis. the aim of the present study was to compare the effect of erbium-doped yttrium aluminum garnet (er:yag) laser with ultrasonic scaler in patients with moderate chronic periodontitis. methods: in this randomized single-blind...

A study is presented of a miniature ultrasonic surgical drill designed for bone biopsy, based on an ultrasonic/sonic drill which converts high frequency to low frequency vibrations through a freely vibrating mass between an ultrasonic transducer-horn and a drill bit. For conventional surgical drilling using a rotary drill or an ultrasonic drill, considerable power is required to penetrate into ...

INTRODUCTION Irrigation dynamics and antibacterial activity determine the efficacy of root canal disinfection. Sonic or ultrasonic agitation of irrigants is expected to improve irrigation dynamics. This study examined the effects of microbubble emulsion (ME) combined with sonic or ultrasonic agitation on irrigation dynamics and reduction of biofilm bacteria within root canal models. METHODS T...