Shear bond strength of Resilon to a methacrylate-based root canal sealer

N. Hiraishi, F. Papacchini, R. J. Loushine, R. N. Weller, M. Ferrari, David Henry Pashley, Franklin Chi Meng Tay

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Aim: To evaluate the adhesive strength of Resilon to Next™ root canal sealant (Heraeus-Kulzer), a methacrylate-based root canal sealer, using a modified microshear bond testing design. Methodology: Flat Resilon surfaces of different roughnesses (smooth surface and surface roughness equivalent to 320-grit and 180-grit) were prepared by compression moulding for bonding to the sealer and compared with a composite control. The shear strength data were statistically analysed using Kruskal-Wallis one-way ANOVA on ranks and Dunn's multiple comparison tests (α = 0.05). After shear testing, fractured specimens were examined using a field emission-scanning electron microscope for detailed analysis of the failure modes. Results: The composite control exhibited significantly higher mean shear strength (7.62 MPa) that was 4.4-4.7 times those of the Resilon groups (1.64-1.74 MPa; P < 0.001). Increasing the surface roughness of the Resilon surface did not contribute to further improvement in shear bond strength for this methacrylate-based sealer (P > 0.05). Failure modes in the composite control were cohesive and mixed failures, while those in the Resilon groups were predominantly adhesive failures, with a small percentage of mixed failures. Ultrastructural evidence of phase separation of polymeric components could be identified in Resilon. Both intact, non deformed and plastically deformed Resilon surfaces could be observed in specimens that exhibited adhesive failures. Conclusion: The low shear strength of Resilon to a methacrylate-based sealer compared with a composite control suggests that the amount of dimethacrylate incorporated in this filled, polycaprolactone-based thermoplastic composite may not yet be optimized for effective chemical coupling to methacrylate resins.

Original languageEnglish (US)
Pages (from-to)753-763
Number of pages11
JournalInternational Endodontic Journal
Volume38
Issue number10
DOIs
StatePublished - Oct 1 2005

Fingerprint

Shear Strength
Methacrylates
Dental Pulp Cavity
Adhesives
Analysis of Variance
Electrons
canals sealer

Keywords

  • Field emission-scanning electron microscope
  • Methacrylate sealer
  • Polycaprolactone
  • Resilon
  • Shear bond strength

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Hiraishi, N., Papacchini, F., Loushine, R. J., Weller, R. N., Ferrari, M., Pashley, D. H., & Tay, F. C. M. (2005). Shear bond strength of Resilon to a methacrylate-based root canal sealer. International Endodontic Journal, 38(10), 753-763. https://doi.org/10.1111/j.1365-2591.2005.01012.x

Shear bond strength of Resilon to a methacrylate-based root canal sealer. / Hiraishi, N.; Papacchini, F.; Loushine, R. J.; Weller, R. N.; Ferrari, M.; Pashley, David Henry; Tay, Franklin Chi Meng.

In: International Endodontic Journal, Vol. 38, No. 10, 01.10.2005, p. 753-763.

Research output: Contribution to journalArticle

Hiraishi, N, Papacchini, F, Loushine, RJ, Weller, RN, Ferrari, M, Pashley, DH & Tay, FCM 2005, 'Shear bond strength of Resilon to a methacrylate-based root canal sealer', International Endodontic Journal, vol. 38, no. 10, pp. 753-763. https://doi.org/10.1111/j.1365-2591.2005.01012.x
Hiraishi N, Papacchini F, Loushine RJ, Weller RN, Ferrari M, Pashley DH et al. Shear bond strength of Resilon to a methacrylate-based root canal sealer. International Endodontic Journal. 2005 Oct 1;38(10):753-763. https://doi.org/10.1111/j.1365-2591.2005.01012.x
Hiraishi, N. ; Papacchini, F. ; Loushine, R. J. ; Weller, R. N. ; Ferrari, M. ; Pashley, David Henry ; Tay, Franklin Chi Meng. / Shear bond strength of Resilon to a methacrylate-based root canal sealer. In: International Endodontic Journal. 2005 ; Vol. 38, No. 10. pp. 753-763.
@article{db915e0cfe534b0cbe8a39ed358030dc,
title = "Shear bond strength of Resilon to a methacrylate-based root canal sealer",
abstract = "Aim: To evaluate the adhesive strength of Resilon to Next™ root canal sealant (Heraeus-Kulzer), a methacrylate-based root canal sealer, using a modified microshear bond testing design. Methodology: Flat Resilon surfaces of different roughnesses (smooth surface and surface roughness equivalent to 320-grit and 180-grit) were prepared by compression moulding for bonding to the sealer and compared with a composite control. The shear strength data were statistically analysed using Kruskal-Wallis one-way ANOVA on ranks and Dunn's multiple comparison tests (α = 0.05). After shear testing, fractured specimens were examined using a field emission-scanning electron microscope for detailed analysis of the failure modes. Results: The composite control exhibited significantly higher mean shear strength (7.62 MPa) that was 4.4-4.7 times those of the Resilon groups (1.64-1.74 MPa; P < 0.001). Increasing the surface roughness of the Resilon surface did not contribute to further improvement in shear bond strength for this methacrylate-based sealer (P > 0.05). Failure modes in the composite control were cohesive and mixed failures, while those in the Resilon groups were predominantly adhesive failures, with a small percentage of mixed failures. Ultrastructural evidence of phase separation of polymeric components could be identified in Resilon. Both intact, non deformed and plastically deformed Resilon surfaces could be observed in specimens that exhibited adhesive failures. Conclusion: The low shear strength of Resilon to a methacrylate-based sealer compared with a composite control suggests that the amount of dimethacrylate incorporated in this filled, polycaprolactone-based thermoplastic composite may not yet be optimized for effective chemical coupling to methacrylate resins.",
keywords = "Field emission-scanning electron microscope, Methacrylate sealer, Polycaprolactone, Resilon, Shear bond strength",
author = "N. Hiraishi and F. Papacchini and Loushine, {R. J.} and Weller, {R. N.} and M. Ferrari and Pashley, {David Henry} and Tay, {Franklin Chi Meng}",
year = "2005",
month = "10",
day = "1",
doi = "10.1111/j.1365-2591.2005.01012.x",
language = "English (US)",
volume = "38",
pages = "753--763",
journal = "International Endodontic Journal",
issn = "0143-2885",
publisher = "Wiley-Blackwell",
number = "10",

}

TY - JOUR

T1 - Shear bond strength of Resilon to a methacrylate-based root canal sealer

AU - Hiraishi, N.

AU - Papacchini, F.

AU - Loushine, R. J.

AU - Weller, R. N.

AU - Ferrari, M.

AU - Pashley, David Henry

AU - Tay, Franklin Chi Meng

PY - 2005/10/1

Y1 - 2005/10/1

N2 - Aim: To evaluate the adhesive strength of Resilon to Next™ root canal sealant (Heraeus-Kulzer), a methacrylate-based root canal sealer, using a modified microshear bond testing design. Methodology: Flat Resilon surfaces of different roughnesses (smooth surface and surface roughness equivalent to 320-grit and 180-grit) were prepared by compression moulding for bonding to the sealer and compared with a composite control. The shear strength data were statistically analysed using Kruskal-Wallis one-way ANOVA on ranks and Dunn's multiple comparison tests (α = 0.05). After shear testing, fractured specimens were examined using a field emission-scanning electron microscope for detailed analysis of the failure modes. Results: The composite control exhibited significantly higher mean shear strength (7.62 MPa) that was 4.4-4.7 times those of the Resilon groups (1.64-1.74 MPa; P < 0.001). Increasing the surface roughness of the Resilon surface did not contribute to further improvement in shear bond strength for this methacrylate-based sealer (P > 0.05). Failure modes in the composite control were cohesive and mixed failures, while those in the Resilon groups were predominantly adhesive failures, with a small percentage of mixed failures. Ultrastructural evidence of phase separation of polymeric components could be identified in Resilon. Both intact, non deformed and plastically deformed Resilon surfaces could be observed in specimens that exhibited adhesive failures. Conclusion: The low shear strength of Resilon to a methacrylate-based sealer compared with a composite control suggests that the amount of dimethacrylate incorporated in this filled, polycaprolactone-based thermoplastic composite may not yet be optimized for effective chemical coupling to methacrylate resins.

AB - Aim: To evaluate the adhesive strength of Resilon to Next™ root canal sealant (Heraeus-Kulzer), a methacrylate-based root canal sealer, using a modified microshear bond testing design. Methodology: Flat Resilon surfaces of different roughnesses (smooth surface and surface roughness equivalent to 320-grit and 180-grit) were prepared by compression moulding for bonding to the sealer and compared with a composite control. The shear strength data were statistically analysed using Kruskal-Wallis one-way ANOVA on ranks and Dunn's multiple comparison tests (α = 0.05). After shear testing, fractured specimens were examined using a field emission-scanning electron microscope for detailed analysis of the failure modes. Results: The composite control exhibited significantly higher mean shear strength (7.62 MPa) that was 4.4-4.7 times those of the Resilon groups (1.64-1.74 MPa; P < 0.001). Increasing the surface roughness of the Resilon surface did not contribute to further improvement in shear bond strength for this methacrylate-based sealer (P > 0.05). Failure modes in the composite control were cohesive and mixed failures, while those in the Resilon groups were predominantly adhesive failures, with a small percentage of mixed failures. Ultrastructural evidence of phase separation of polymeric components could be identified in Resilon. Both intact, non deformed and plastically deformed Resilon surfaces could be observed in specimens that exhibited adhesive failures. Conclusion: The low shear strength of Resilon to a methacrylate-based sealer compared with a composite control suggests that the amount of dimethacrylate incorporated in this filled, polycaprolactone-based thermoplastic composite may not yet be optimized for effective chemical coupling to methacrylate resins.

KW - Field emission-scanning electron microscope

KW - Methacrylate sealer

KW - Polycaprolactone

KW - Resilon

KW - Shear bond strength

UR - http://www.scopus.com/inward/record.url?scp=25844469180&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=25844469180&partnerID=8YFLogxK

U2 - 10.1111/j.1365-2591.2005.01012.x

DO - 10.1111/j.1365-2591.2005.01012.x

M3 - Article

VL - 38

SP - 753

EP - 763

JO - International Endodontic Journal

JF - International Endodontic Journal

SN - 0143-2885

IS - 10

ER -