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http://dx.doi.org/10.5395/rde.2019.44.e21

Effect of intracanal medications on the interfacial properties of reparative cements  

Pereira, Andrea Cardoso (Department of Restorative Dentistry, Endodontics Area, Piracicaba Dental School, State University of Campinas - UNICAMP)
Pallone, Mariana Valerio (Department of Restorative Dentistry, Endodontics Area, Piracicaba Dental School, State University of Campinas - UNICAMP)
Marciano, Marina Angelica (Department of Restorative Dentistry, Endodontics Area, Piracicaba Dental School, State University of Campinas - UNICAMP)
Cortellazzi, Karine Laura (Department of Social Dentistry, Piracicaba Dental School, State University of Campinas - UNICAMP)
Frozoni, Marcos (Department of Endodontics, Sao Leopoldo Mandic Dental School)
Gomes, Brenda P.F.A. (Department of Restorative Dentistry, Endodontics Area, Piracicaba Dental School, State University of Campinas - UNICAMP)
de Almeida, Jose Flavio Affonso (Department of Restorative Dentistry, Endodontics Area, Piracicaba Dental School, State University of Campinas - UNICAMP)
de Jesus Soares, Adriana (Department of Restorative Dentistry, Endodontics Area, Piracicaba Dental School, State University of Campinas - UNICAMP)
Publication Information
Restorative Dentistry and Endodontics / v.44, no.2, 2019 , pp. 21.1-21.8 More about this Journal
Abstract
Objectives: The purpose of the present study was to evaluate the effect of calcium hydroxide with 2% chlorhexidine gel (HCX) or distilled water (HCA) compared to triple antibiotic paste (TAP) on push-out bond strength and the cement/dentin interface in canals sealed with White MTA Angelus (WMTA) or Biodentine (BD). Materials and Methods: A total of 70 extracted human lower premolars were endodontically prepared and randomly divided into 4 groups according to the intracanal medication, as follows: group 1, HCX; group 2, TAP; group 3, HCA; and group 4, control (without intracanal medication). After 7 days, the medications were removed and the cervical third of the specimens was sectioned into five 1-mm sections. The sections were then sealed with WMTA or BD as a reparative material. After 7 days in 100% humidity, a push-out bond strength test was performed. Elemental analysis was performed at the interface, using energy-dispersive spectroscopy. The data were statistically analyzed using analysis of variance and the Tukey test (p < 0.05). Results: BD presented a higher bond strength than WMTA (p < 0.05). BD or WMTA in canals treated with calcium hydroxide intracanal medications had the highest bond strength values, with a statistically significant difference compared to TAP in the WMTA group (p < 0.05). There were small amounts of phosphorus in samples exposed to triple antibiotic paste, regardless of the coronal sealing. Conclusions: The use of intracanal medications did not affect the bond strength of WMTA and BD, except when TAP was used with WMTA.
Keywords
Calcium hydroxide; Chlorhexidine; Endodontics;
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