Restorative Dentistry & Endodontics

Daniel Poletto

1 Article

Smear layer removal by different chemical solutions used with or without ultrasonic activation after post preparation: Daniel Poletto, Ana Claudia Poletto, Andressa Cavalaro, Ricardo Machado, Leopoldo Cosme-Silva, Cássia Cilene Dezan Garbelini, Márcio Grama Hoeppner; Restor Dent Endod 2017;42(4):324-331. Published online November 1, 2017; DOI: https://doi.org/10.5395/rde.2017.42.4.324

Objectives

This study evaluated smear layer removal by different chemical solutions used with or without ultrasonic activation after post preparation.

Materials and Methods

Forty-five extracted uniradicular human mandibular premolars with single canals were treated endodontically. The cervical and middle thirds of the fillings were then removed, and the specimens were divided into 9 groups: G1, saline solution (NaCl); G2, 2.5% sodium hypochlorite (NaOCl); G3, 2% chlorhexidine (CHX); G4, 11.5% polyacrylic acid (PAA); G5, 17% ethylenediaminetetraacetic acid (EDTA). For the groups 6, 7, 8, and 9, the same solutions used in the groups 2, 3, 4, and 5 were used, respectively, but activated with ultrasonic activation. Afterwards, the roots were analyzed by a score considering the images obtained from a scanning electron microscope.

Results

EDTA achieved the best performance compared with the other solutions evaluated regardless of the irrigation method (p < 0.05).

Conclusions

Ultrasonic activation did not significantly influence smear layer removal.

Citations

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