The present study had as objective to evaluate the resistance to torsion fracture of two instrumentation systems based on different motion cinematics: alternating movement of the system TF Adaptive and the rotary movement of the system HYFLEX CM. For this 15 TF Adaptive instruments were used to 27 mm in length, with the following dimensions: 20/.04, 25/.06, 35/04 and 30 Hyflex CM instruments to 25 mm in length...
This study aimed to evaluate the efficacy of 5 irrigation protocols in removing calcium hydroxide in simulated internal root resorption cavities. Eighteen extracted human teeth, upper anterior and uniradicular, were prepared up to size 50. The teeth were divided longitudinally, and internal root resorption cavities were made by acid demineralization using nitric acid. The same sample was submitted to the five i...
Introduction: The understanding of the characteristics of the foraminal diameter contributes to the work of the clinician because it allows a selection of the appropriate instruments for the root canals preparation. The aim of this study was to evaluate the foraminal diameter, in vivo, in upper and lower molar canals and to verify an influence of factors such as age group and pulp and periradicular diagnosis. M...
Treatment of the root canal system (SCR) requires mechanical and chemical techniques to shape, clean and fill the pulp cavity. There are irrigation techniques that enhance the action of irrigants and allow greater access to undesirable substances in the complex system of root canals that are not reached mechanically during the biomechanics of endodontic treatment, thus improving the cleaning and disinfection of...