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pH changes after manual or ultrasonic instrumentation and smear layer removal with EDTA or ultrasonic
(Wiley-Blackwell, 2008-10-01)
The purpose of the present study was to evaluate the influence of instrumentation techniques associated with the smear layer removal, in the pH changes of the root surface. Thirty mandibular humans premolars were divided ...
Does the Ultrasonic Cleaning Medium Affect the Adhesion of Resin Cement to Feldspathic Ceramic?
(Quintessence Publishing Co Inc, 2012-12-01)
Purpose: To evaluate the effect of different cleaning media on the adhesion of resin cement to feldspathic ceramic after etching.Materials and Methods: The cementation surfaces of ceramic blocks (N = 20, n = 5 per group) ...
Design of ultrasonic synthetic aperture imaging systems based on a non-grid 2D sparse array
(2021-12-01)
This work provides a guide to design ultrasonic synthetic aperture systems for non-grid two-dimensional sparse arrays such as spirals or annular segmented arrays. It presents an algorithm that identifies which elements ...
Evaluation of Ultrasonic and ErCr:YSGG Laser Retrograde Cavity Preparation
(Elsevier B.V., 2009-05-01)
Root end cavity preparation techniques aim to create a clean and properly shaped cavity in a short time. Although the use of ultrasonics has been widely recommended, a laser can also be used. This study evaluated the time ...
Ultrasonic activation of internal bleaching agents
(2013-01-01)
Aim: To evaluate the effectiveness of ultrasonic activation of bleaching agents during ex vivo internal bleaching. Methodology: Fifty canine human teeth were artificially stained, root filled and divided into five groups ...
Clinical efficacy of EDTA ultrasonic activation in the reduction of endotoxins and cultivable bacteria
(2017-10-01)
Aim: This clinical study was conducted to investigate the influence of 17% ethylenediaminetetraacetic acid (EDTA) ultrasonic activation after chemomechanical preparation (CMP) on eliminating/reducing oral bacterial ...
Stress evaluation of railroad forged wheels by ultrasonic testing
(Amer Soc Testing MaterialsW ConshohockenEUA, 2007)
Sparse arrays and image compounding techniques for non-destructive testing using guided acoustic waves
(2013-06-01)
Piezoelectric array transducers applications are becoming usual in the ultrasonic non-destructive testing area. However, the number of elements can increase the system complexity, due to the necessity of multichannel ...
Effect of the Etching Duration and Ultrasonic Cleaning on Microtensile Bond Strength Between Feldspathic Ceramic and Resin Cement
(Taylor & Francis Ltd, 2013-03-01)
This study assessed the effect of different etching durations of feldspathic ceramic with hydrofluoric acid (HF) and ultrasonic cleaning of the etched ceramic surface on the microtensile bond strength stability of resin ...
Thermal characterization of an ultrasonic density-measurement cell
(Institute of Electrical and Electronics Engineers (IEEE), 2007-06-01)
An ultrasonic density-measurement cell is experimentally characterized as a function of temperature. The measurement of propagation velocity and density of several liquids is performed in the 15 degrees C-40 degrees C ...