This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Perdigao, J. Articles by Donly, K.J. Search for Related Content PubMed PubMed Citation Articles by Perdigao, J. Articles by Donly, K.J. Pubmed/NCBI databases Substance via MeSH Social Bookmarking                         What's this?

In vitro Bond Strengths and SEM Evaluation of Dentin Bonding Systems to Different Dentin Substrates

Department of Operative Dentistry, The University of Coimbra Medical and Dental School, Coimbra, Portugal

E.J. Swift, Jr

Department of Operative Dentistry, The University of North Carolina, CB 7450, Brauer Hall, Chapel Hill, North Carolina 27599-7450

G.E. Denehy

Department of Operative Dentistry, The University of Iowa, Iowa City, Iowa 52242

J.S. Wefel

Department of Pediatric Dentistry and Dows Institute for Dental Research, The University of Iowa, Iowa City, Iowa

K.J. Donly

Department of Pediatric Dentistry and Dows Institute for Dental Research, The University of Iowa, Iowa City, Iowa

In comparison to enamel, bonding to normal dentin is a greater challenge because of its organic constituents, fluid-filled tubules, and variations in intrinsic composition. Bonding to sclerotic dentin is even more difficult. To evaluate the shear bond strengths of four adhesive systems to dentin substrates with different levels of mineralization, 120 extracted human teeth were randomly assigned to three groups (n = 40). After mid-coronal dentin was exposed, groups of specimens were artificially hypermineralized by immersion in a remineralizing solution, demineralized by means of an acetic acid demineralizing solution, or stored in distilled water to model sclerotic, carious, and normal dentin, respectively. Resin composite was bonded to dentin by use of commercial adhesive systems. After the specimens were thermocycled, shear bond strengths were determined in an Instron universal testing machine. Dentin substrates and resin/dentin interfaces were examined by SEM. For each adhesive system, the mean shear bond strength to normal dentin was significantly higher than that to either of the other substrates. Shear bond strengths to hypermineralized dentin were significantly higher than those to demineralized dentin with all adhesives except Prisma Universal Bond 3.

Key Words: Dental Bonding • Dentin.

Journal of Dental Research, Vol. 73, No. 1, 44-55 (1994)
DOI: 10.1177/00220345940730010601


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This article has been cited by other articles:

				J.E. Nor, R.J. Feigal, J.B. Dennison, and C.A. Edwards Dentin Bonding: SEM Comparison of the Resin-Dentin Interface in Primary and Permanent Teeth Journal of Dental Research, June 1, 1996; 75(6): 1396 - 1403. [Abstract] [PDF]