Volume 2007, Issue 1
  • ISSN: 0253-8253
  • E-ISSN: 2227-0426


Thirty sound human upper premolars were used to evaluate the in vitro effect of collagen removal from the acid-etched dentin surface on the penetration depth of three types of dental adhesive systems. Standardised buccal and lingual class V cavities were made and the teeth were then subdivided randomly into six groups five teeth each. Three types of dental adhesive systems were used (syntac sprint, Vivadent-Liechtenstein. Syntac single component, Vivadent-Liechtenstein. PQ1> Ultra Dent-USA). The bonds were used with and without deproteinization (10% Sodium hypochlorite for one minute). The highest mean of penetration depth (10.15 jl) was recorded in the group where the PQ1 bond was used on acid-etched and NaOCl-treated dentin. The lowest mean of penetration depth (5.77jl) was recorded where the Syntac Single Component bond was used on the acid-etched dentin surface.

Conclusion: A one minute application of 10% sodium hypochlorite on conditioned dentin significantly increases the penetration depth regardless of the type of adhesive system used. Alcohol-containing systems showed the greatest penetration.


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  • Article Type: Research Article
Keyword(s): adhesive penetration , collagen removal , Dentin , dentin adhesive , Fluorescein dye and Sodium hypochlorite
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