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KMID : 1034420190440020021
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Restorative Dentistry & Endodontics
2019 Volume.44 No. 2 p.21 ~ p.21
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Effect of intracanal medications on the interfacial properties of reparative cements
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Pereira Andrea Cardoso
Pallone Mariana Valerio
Marciano Marina Angelica
Cortellazzi Karine Laura
Frozoni Marcos
Gomes Brenda P. F. A.
de Almeida Jose Flavio Affonso
Soares Adriana de Jesus
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Abstract
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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.
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KEYWORD
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Calcium hydroxide, Chlorhexidine, Endodontics
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