Push-out bond strength of a nano-modified mineral trioxide aggregate

Mohammad Ali Saghiri, Franklin Garcia-Godoy, James L. Gutmann, Mehrdad Lotfi, Armen Asatourian, Hadi Ahmadi

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Introduction: To analyze the push-out bond strength of Angelus WMTA (Angelus Dental Products), a nano-modification of WMTA (Kamal Asgar Research Center) and Bioaggregate (Innovative Bioceramix). Methods: Sixty 2-mm-thick root sections were prepared from 60 single-rooted human teeth. The dentin disks were randomly divided into three groups (n = 20) and filled with Angelus WMTA, Nano-WMTA, or Bioaggregate, respectively. Push-out bond strength values of the specimens were measured by a universal testing machine and examined under scanning electron microscope at × 40 magnification to determine the nature of the bond failure. The data were analyzed with a Kruskal-Wallis test. Results: The greatest mean for push-out bond strength (138.48 ± 11.43 MPa) was observed for the nano-modification of WMTA. The values decreased to 110.73 ± 11.19 and 25.64 ± 5.27 MPa for Angelus WMTA and Bioaggregate, respectively. There were significant differences between the groups (P < 0.001). Inspection of the samples revealed the bond failure to be predominantly adhesive type except for the nano-modification group, as some samples also exhibited cohesive failures. Conclusions: It is concluded that the force needed for the displacement of the nano-modification of WMTA (NWMTA) was significantly higher than for Angelus WMTA and Bioaggregate.

Original languageEnglish (US)
Pages (from-to)323-327
Number of pages5
JournalDental Traumatology
Volume29
Issue number4
DOIs
StatePublished - Jan 1 2013

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Tooth
Dentin
Adhesives
Electrons
BioAggregate
mineral trioxide aggregate
Research

All Science Journal Classification (ASJC) codes

  • Oral Surgery

Cite this

Push-out bond strength of a nano-modified mineral trioxide aggregate. / Saghiri, Mohammad Ali; Garcia-Godoy, Franklin; Gutmann, James L.; Lotfi, Mehrdad; Asatourian, Armen; Ahmadi, Hadi.

In: Dental Traumatology, Vol. 29, No. 4, 01.01.2013, p. 323-327.

Research output: Contribution to journalArticle

Saghiri, MA, Garcia-Godoy, F, Gutmann, JL, Lotfi, M, Asatourian, A & Ahmadi, H 2013, 'Push-out bond strength of a nano-modified mineral trioxide aggregate', Dental Traumatology, vol. 29, no. 4, pp. 323-327. https://doi.org/10.1111/j.1600-9657.2012.01176.x
Saghiri, Mohammad Ali ; Garcia-Godoy, Franklin ; Gutmann, James L. ; Lotfi, Mehrdad ; Asatourian, Armen ; Ahmadi, Hadi. / Push-out bond strength of a nano-modified mineral trioxide aggregate. In: Dental Traumatology. 2013 ; Vol. 29, No. 4. pp. 323-327.
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