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The influence of ultrasound on the retention of cast posts cemented with different agents
Author(s) -
Gomes A. P. M.,
Kubo C. H.,
Santos R. A. B.,
Santos D. R.,
Padilha R. Q.
Publication year - 2001
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1046/j.1365-2591.2001.00353.x
Subject(s) - glass ionomer cement , cement , zinc phosphate , cementation (geology) , materials science , dentistry , universal testing machine , ultrasonic sensor , ultrasound , zinc , composite material , metallurgy , medicine , ultimate tensile strength , radiology
Aim The aim of this study was to evaluate the influence of ultrasound during the removal of posts cemented with either zinc phosphate cement, glass ionomer cement or resin cement. Methodology Eighty‐four single‐rooted teeth were prepared and after cementation of cast posts, they were randomly divided into six groups of 14. Groups 1, 2 and 3 did not receive ultrasonic vibration, whilst groups 4, 5 and 6 received ultrasonic vibration for 10 min. The force necessary for post removal was determined using a universal testing machine. Results were statistically analysed using anova and Tukey tests (5%). Results The application of ultrasonic vibration reduced the retention provided by zinc phosphate and glass ionomer cements by 39% and 33%, respectively. Conclusions A statistically significant reduction in the force necessary to remove posts cemented with zinc phosphate and glass ionomer cements occurred following application of ultrasound. The application of ultrasonic vibration did not influence the retention of cast posts cemented with resin cement.