Sonic versus ultrasonic activation for the cleaning of the root canal after post space preparation: an in vitro study.

René Carrasco, Ricardo Román, Makarena Ojeda, Carolina Vergara


Objective: Compare efficacy 3 intracanal cleaning protocols used previous to cementation of prosthetic bolts.Material and Methods: 40 anterior teeth which received endodontic treatment in hand, using the technique of lateral condensation. After two weeks, the unblocking of the anterior teeth was carried out removing the amount of gutta-percha that grants the necessary space to accommodate a post. Then, the teeth were randomly divided into groups; root surface treated with chlorhexidine (CHX) activated by ultrasound (US) (group I), chlorhexidine activated with sonic instrument (S) (group II), chlorhexidine without activation (group III) and chlorhexidine without treatment (group IV). All teeth were fractured longitudinally getting 2 sections. The middle third of the root canal was micro photographed with a scanning electron microscope (SEM) and the contaminated surface was measured using detritus ImageJ 1.47. It was analyzed with Kruskal-Wallis-test using GraphPad Prism 5.01.Results: The median percentage of contaminated area of the Group I was 20.06%, Group II 19.3%, Group III 36.05% and Group IV 56.45%.Conclusion: There are significant differences among different intracanal cleaning protocols in the removal efficiency of detritus from the root canal, being the activated protocols the most effective ones.


Detritus; activated irrigation; sonic; ultrasonic; chlorhexidine.


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