This review presents a comprehensive summary of the current understanding US-sensitive drug delivery systems for controlled release and activation. The typical mechanisms main factors affecting ultrasonic responsiveness carriers are summarized. Representative examples US-controlled activation highlighted. Finally, an outlook on this promising therapeutic strategy is provided.

Objectives This study evaluated smear layer removal by different chemical solutions used with or without ultrasonic activation after post preparation. Materials and Methods Forty-five extracted uniradicular human mandibular premolars with single canals were treated endodontically. The cervical and middle thirds of the fillings were then removed, and the specimens were divided into 9 groups: G...

introduction: the aim of this in vitro study was to evaluate the dissolving efficacy of eucalyptol and orange oil solvents associated with passive ultrasonic activation (pua) in zinc oxide-eugenol (zoe) based and epoxy resin-based root canal sealers. methods and materials: seventy samples of each sealer were prepared and then randomized according to the solvent and the time of the ultrasonic ac...

Ultrasonic cavitation is a phenomenon that occurs when high-frequency sound waves are introduced into liquid medium, causing the formation and collapse of small bubbles within liquid. These generate high-energy shock can change surface nearby materials, leading to various physical chemical effects. In this review, we briefly summarized influence ultrasonic on surficial properties metals some in...

INTRODUCTION The aims of this study were to evaluate the removal of dentin debris from the root canal by sonic or ultrasonic activation of the irrigant and the physical mechanisms of sonic activation by visualizing the oscillations of the sonic tip, both inside and outside the confinement of the root canal. METHODS Roots of 18 canines were embedded, split, and prepared into standardized root ...

The influence of mechano-ultrasonic activation (MUA) and nano-additives (carbon nanotubes-CNT) on the interaction pathway nickel–aluminum powder mixture at high heating rates was investigated. optimum conditions activation, along with phase structure formation peculiarities nickel–aluminum–carbon nanotubes mixtures by thermal analysis method, so-called high-speed temperature scanner (HSTS), wer...

BACKGROUND The goals of this randomized double-blind trial were to assess the antimicrobial activity in vivo of Sodium hypochlorite (NaOCl) vs. chlorhexidine gluconate (CHX) used in combination either with EndoActivator® or IRRI S® files in patients with apical periodontitis. MATERIAL AND METHODS A total of 120 patients with apical periodontitis (in single or multiple root canals) were random...

This study evaluated temperature changes during passive ultrasonic irrigation. Root canals of three extracted maxillary canines were enlarged to size #45. Thermocouples were mounted 3, 6, and 9 mm from the apical foramen. Teeth were placed in a water bath at 37 degrees C. Distilled water (20 degrees C) was continuously delivered through an ultrasonic unit (group 1) or deposited into the root ca...

Kinetic study of epoxidation of unsaturated ketone of mesityl oxide was studied by usingHydrogen peroxide in the presence of dodecyltrimethyl ammonium bromide (DTAB) as aninverse phase transfer catalyst. The reaction was carried out in the two-phase media of waterheptanewith 1:1 ratio in 25 °C. It was found that the order of reaction for mesityl oxide forketone concentration in the range of 0.0...

BACKGROUND The aim of this study was to compare reliability in handling and function of resterilised and single-use disposable ultrasonic scissors. METHODS In a prospective randomized study, the surgeon blindly tested new and resterilised ultrasonic scissors. The parameters were force of activation, cutting effect, coagulation effect, error messages and disturbing generator noise. RESULTS 5...