On the durability of resin-dentin bonds: Identifying the weakest links

Zihou Zhang, Dylan Beitzel, Mustafa Mutluay, Franklin Chi Meng Tay, David Henry Pashley, Dwayne Arola

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Abstract Fatigue of resin-dentin adhesive bonds is critical to the longevity of resin composite restorations. Objectives The objectives were to characterize the fatigue and fatigue crack growth resistance of resin-dentin bonds achieved using two different commercial adhesives and to identify apparent "weak-links". Methods Bonded interface specimens were prepared using Adper Single Bond Plus (SB) or Adper Scotchbond Multi-Purpose (SBMP) adhesives and 3M Z100 resin composite according to the manufacturers' instructions. The stress-life fatigue behavior was evaluated using the twin bonded interface approach and the fatigue crack growth resistance was examined using bonded interface Compact Tension (CT) specimens. Fatigue properties of the interfaces were compared to those of the resin-adhesive, resin composite and coronal dentin. Results The fatigue strength of the SBMP interface was significantly greater than that achieved by SB (p ≤ 0.01). Both bonded interfaces exhibited significantly lower fatigue strength than that of the Z100 and dentin. Regarding the fatigue crack growth resistance, the stress intensity threshold (ΔKth) of the SB interface was significantly greater (p ≤ 0.01) than that of the SBMP, whereas the ΔKth of the interfaces was more than twice that of the parent adhesives. Significance Collagen fibril reinforcement of the resin adhesive is essential to the fatigue crack growth resistance of resin-dentin bonds. Resin tags that are not well hybridized into the surrounding intertubular dentin and/or poor collagen integrity are detrimental to the bonded interface durability.

Original languageEnglish (US)
Article number2582
Pages (from-to)1109-1118
Number of pages10
JournalDental Materials
Volume31
Issue number9
DOIs
StatePublished - Sep 1 2015

Fingerprint

Dentin
Fatigue
Adhesives
Durability
Resins
Fatigue crack propagation
Fatigue of materials
Composite Resins
Collagen
Growth
Composite materials
Restoration
Reinforcement
Psychological Stress
Single Bond Plus
Scotchbond Multi-Purpose

Keywords

  • Crack
  • Dentin bonding
  • Durability
  • Fatigue
  • Fracture

ASJC Scopus subject areas

  • Materials Science(all)
  • Dentistry(all)
  • Mechanics of Materials

Cite this

Zhang, Z., Beitzel, D., Mutluay, M., Tay, F. C. M., Pashley, D. H., & Arola, D. (2015). On the durability of resin-dentin bonds: Identifying the weakest links. Dental Materials, 31(9), 1109-1118. [2582]. https://doi.org/10.1016/j.dental.2015.06.011

On the durability of resin-dentin bonds : Identifying the weakest links. / Zhang, Zihou; Beitzel, Dylan; Mutluay, Mustafa; Tay, Franklin Chi Meng; Pashley, David Henry; Arola, Dwayne.

In: Dental Materials, Vol. 31, No. 9, 2582, 01.09.2015, p. 1109-1118.

Research output: Contribution to journalArticle

Zhang, Z, Beitzel, D, Mutluay, M, Tay, FCM, Pashley, DH & Arola, D 2015, 'On the durability of resin-dentin bonds: Identifying the weakest links', Dental Materials, vol. 31, no. 9, 2582, pp. 1109-1118. https://doi.org/10.1016/j.dental.2015.06.011
Zhang, Zihou ; Beitzel, Dylan ; Mutluay, Mustafa ; Tay, Franklin Chi Meng ; Pashley, David Henry ; Arola, Dwayne. / On the durability of resin-dentin bonds : Identifying the weakest links. In: Dental Materials. 2015 ; Vol. 31, No. 9. pp. 1109-1118.
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AB - Abstract Fatigue of resin-dentin adhesive bonds is critical to the longevity of resin composite restorations. Objectives The objectives were to characterize the fatigue and fatigue crack growth resistance of resin-dentin bonds achieved using two different commercial adhesives and to identify apparent "weak-links". Methods Bonded interface specimens were prepared using Adper Single Bond Plus (SB) or Adper Scotchbond Multi-Purpose (SBMP) adhesives and 3M Z100 resin composite according to the manufacturers' instructions. The stress-life fatigue behavior was evaluated using the twin bonded interface approach and the fatigue crack growth resistance was examined using bonded interface Compact Tension (CT) specimens. Fatigue properties of the interfaces were compared to those of the resin-adhesive, resin composite and coronal dentin. Results The fatigue strength of the SBMP interface was significantly greater than that achieved by SB (p ≤ 0.01). Both bonded interfaces exhibited significantly lower fatigue strength than that of the Z100 and dentin. Regarding the fatigue crack growth resistance, the stress intensity threshold (ΔKth) of the SB interface was significantly greater (p ≤ 0.01) than that of the SBMP, whereas the ΔKth of the interfaces was more than twice that of the parent adhesives. Significance Collagen fibril reinforcement of the resin adhesive is essential to the fatigue crack growth resistance of resin-dentin bonds. Resin tags that are not well hybridized into the surrounding intertubular dentin and/or poor collagen integrity are detrimental to the bonded interface durability.

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