Applications of power ultrasonics in engineering are growing and now encompass a wide variety of industrial processes and medical procedures. In the field of power ultrasonics, ultrasonic vibrations are used to effect a physical change in a medium. However, the mechanism by which a process can benefit from power ultrasonics is not common for all applications and can include one or more of such ...

The capability of embedded piezoelectric wafer active sensors (PWAS) to perform in-situ nondestructive evaluation (NDE) is explored. Theoretical developments and laboratory tests are used to prove that PWAS transducers can satisfactorily perform Lamb wave transmission and reception, pulse-echo, pitch-catch, and phased array functions of conventional ultrasonics thus opening the road for embedde...

Background The use of ultrasonic devices has been shown to be very successful for the removal of various canal obstructions.3-5 The use of ultrasonics is advantageous over conventional methods for removal of separated instruments as it is able to set separated instruments free from canals while making the sacrifice of dentin significantly less.6 However, there are several negative factors when ...

Objective: This in vitro study evaluated the efficiency of EDTA, apple vinegar and SmearClear, with and without ultrasonic activation, on smear layer removal. Methods: Seventy extracted canines were randomly divided into eight groups and prepared by using ProTaper instruments. The final irrigation regimens used were: Group 1 (control) (SAL) and Group 2 (control) (SALUS): saline for 3 minutes wi...