Mechanical stability of adhesives under water storage

Adriana P. Manso, Ana K. Bedran-Russo, Byoung Suh, David H. Pashley, Ricardo M. Carvalho

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Objectives: To evaluate the effects of storage condition (wet or dry) and storage time (24 h and 3 months) on the ultimate tensile strength (UTS) of Single Bond (SB), 3M-ESPE; Opti Bond Solo Plus (OB), Kerr; One Step (OS), Bisco, and Prime & Bond NT (PB), Dentsply adhesive resins. Methods: Hourglass-shaped specimens were obtained from a metallic matrix. Each adhesive was dispensed to fill the molds completely and left undisturbed in a dark chamber for 4 min at 37 °C for solvent evaporation. They were individually light-cured for 80 s at 500 mW/cm2 and randomly divided into three groups: 24 h of water storage; 3 months of water storage; 3 months of dry storage. The specimens were tested in tension at 0.5 mm/min using the microtensile method and data were analyzed by two-way ANOVA and SNK tests for each material. Results: Water storage for 3 months did not cause significant changes in the UTS of any of the adhesives (p-value). Values for water storage ranged from 25.9 MPa for Single Bond at 24 h to 32.7 MPa for Prime & Bond NT after 3 months. Dry storage for 3 months yielded significantly higher UTS for most adhesives, which ranged from approximately 20% for Opti Bond to 160% higher values for Single Bond compared to their 3 months wet storage values. Conclusion: The effects of storage condition and time on the UTS of adhesives were material-dependent.

Original languageEnglish (US)
Pages (from-to)744-749
Number of pages6
JournalDental Materials
Issue number6
StatePublished - Jun 2009


  • Adhesive
  • Mechanical properties
  • Solvent
  • Storage

ASJC Scopus subject areas

  • General Materials Science
  • General Dentistry
  • Mechanics of Materials


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