This study evaluated the effect of two commercially-available caries detection solutions on the bond strength of three bonding products to resin composite. Extracted human molars were sectioned to produce 108 flat dentin surfaces. Thirty-six surfaces were then either left untreated (control) or treated with one of two caries disclosing solutions (Snoop, Pulpdent or Seek, Ultradent). The 36 specimens of each type of treatment were then treated with one of three bonding agents: Prime & Bond NT (a partially filled, total-etch product from Dentsply/Caulk), Clearfil SE Bond (a self-etching primer product from Kuraray), or Prompt L-Pop (a self-etching primer, all-in- one product from Parkell). Tetric Ceram (Ivoclar Vivadent) resin composite was then bonded to the dentin surfaces. The specimens were stored for 24 hours, thermocycled, and tested for shear bond strength. Results indicated that neither of the two caries disclosing solutions significantly affected the bond strength of the bonding products.
Caries detection solutions have been been used by clinicians to distinguish between affected and infected dentin. Affected dentin is the dentin that is adjacent to a carious lesion and is not contaminated by bacteria. While it may be softer than normal dentin, it should be retained because it has the potential for remineralization. Infected dentin, on the other hand, contains bacteria and should be removed during preparation. Several commercial products are now available for distinguishing between the two, such as Caries Detector, Snoop, Seek, and To Dye For. DIS published a synopsis of these products in DIS 63-07. This study evaluated how these products affect the shear bond strengths of some of the newest types of bonding agents. The results of the study should give clinicians who routinely use caries detection solution some reassurance that, for at least the tested bonding agents, no adverse effects occur. It is important to note, however, that the caries detection solutions and bonding agents in this study were tested using sound, intact dentin and not carious dentin as would be the case intraorally. Results may differ when caries-affected dentin is involved. Interestingly, although the purpose of this study was not to compare the bond strengths of the three dentin bonding products, Prompt L-Pop did not perform as well as CLearfil SE Bond and Prime & Bond NT.
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