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  • Title: Bond strengths of tooth-colored posts, effect of sealer, dentin adhesive, and root region.
    Author: Kurtz JS, Perdigão J, Geraldeli S, Hodges JS, Bowles WR.
    Journal: Am J Dent; 2003 Sep; 16 Spec No():31A-36A. PubMed ID: 14674496.
    Abstract:
    PURPOSE: To evaluate the effect of sealer, dentin bonding agent, and root region on the push-out bond strengths of three tooth colored posts. METHODS: 24 extracted human single rooted maxillary central incisors and canines were endodontically-treated using gutta percha and Roth's 801 or AH26 sealer. Posts (Cosmopost, Fibrekor, or Parapost Fiber White) were placed using one of two adhesive systems (Parapost Cement Conditioner with Parapost Cement, or One-Step with Hi-X Post self-cure resin cement). The push-out test was performed on different sections of the root to measure bond strengths. RESULTS: Cosmopost showed significantly lower mean bond strengths than either Fibrekor or Parapost. Bond strengths of the posts in the crown section were significantly higher than those in any of the three root areas measured. Neither the eugenol-containing sealer nor the bonding agent type had any effect on bond strength. Post type and root region significantly affected bond strength while sealer type or bonding agent had no effect on bond strength.
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