Push‐out bond strength of MTA with antiwashout gel or resins
- 6 August 2013
- journal article
- research article
- Published by Wiley in International Endodontic Journal
- Vol. 47 (5), 454-462
- https://doi.org/10.1111/iej.12169
Abstract
AimAssessment of the push-out bond strength of four MTA-based formulations for use as root-end filling materials. MethodologyMTA Plus mixed with (i) water (MTA-W'); (ii) a proprietary water-based antiwashout gel (MTA-AW'); (iii) Superbond C&B chemically curing resin (MTA-Chem'); and (iv) Heliobond light-curing resin (MTA-Light') was tested. Root slices 3mm thick human had a 1.5mm diameter hole drilled centrally and were treated with 17% EDTA for 60s. Forty specimens divided into groups 1-4 were prepared and filled with MTA-W, MTA-AW, MTA-Chem and MTA-Light, respectively. Groups 3 and 4 were etched with 37% phosphoric acid for 60s, and bonding agent was applied to the dentine surface. Specimens were stored for 28days in Hanks' Balanced Salt Solution at 37 degrees C. Push-out strength was tested with a punch and die (punch diameter 1.3mm, die diameter 2.0mm, punch speed 1mmmin(-1)). Stereomicroscopy was used to classify failure mode (adhesive, cohesive or mixed type). ResultsThe resulting push-out strengths were 5.1 MPa (MTA-W), 4.3 MPa (MTA-AW), 4.7 MPa (MTA-Chem) and 11.0 MPa (MTA-Light). MTA-W had higher push-out strength than MTA-AW (P=0.022). The same was noted for MTA-Light relative to the other materials (P<0.05). All materials exhibited adequate push-out strengths compared with MTA-W. Failure was predominantly mixed, except for MTA-Chem (predominantly adhesive). ConclusionsAll materials exhibited adequate push-out strength. Previous studies have shown the new formulations have additional advantages including increased washout resistance and faster setting time, making them promising for future dental applications.Keywords
This publication has 35 references indexed in Scilit:
- Scanning electron microscopic evaluation of the material interface of adjacent layers of dental materialsDental Materials, 2011
- Effect of plunger diameter on the push-out bond values of different root filling materialsInternational Endodontic Journal, 2011
- Development of the foremost light-curable calcium-silicate MTA cement as root-end in oral surgery. Chemical–physical properties, bioactivity and biological behaviorDental Materials, 2011
- Evaluation of alveolar socket response to Angelus MTA and experimental light-cure MTAOral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 2010
- Dislocation resistance of ProRoot Endo Sealer, a calcium silicate‐based root canal sealer, from radicular dentineInternational Endodontic Journal, 2008
- Comparison between regional micropush-out and microtensile bond strength of resin composite to dentinActa Odontologica Scandinavica, 2008
- Influence of anti‐washout agents on the rheological properties and injectability of a calcium phosphate cementJournal of Biomedical Materials Research Part B: Applied Biomaterials, 2006
- The adhesion between fiber posts and root canal walls: comparison between microtensile and push‐out bond strength measurementsEuropean Journal of Oral Sciences, 2004
- The effect of six years of water storage on resin composite bonding to human dentinJournal of Biomedical Materials Research Part B: Applied Biomaterials, 2003
- Adhesion of root canal sealers to bovine dentine and gutta‐perchaInternational Endodontic Journal, 1990