Objectives: Esthetic posts have been developed to maximize the optical effects of the foundation of esthetic restorations. The purpose of this study was to evaluate the effect of sealer, bonding agent, and root region on the bond strength of three tooth-colored posts. Methods: Twenty-four extracted human maxillary central incisors and canines were endodontically treated using gutta percha and Roth’s 801 or AH26 sealer. Posts (Fibrekor, Cosmopost, or Parapost White) were placed using one of two adhesive systems (Coltène/Whaledent’s Parapost Cement Conditioner/Parapost Cement or Bisco’s One-Step/Post Cement Hi-X). A push-out test was performed on different sections of the root to measure bond strengths. Data were analyzed with ANOVA and Tukey’s studentized range test. Results: Cosmopost showed significantly lower bond strengths (6.6 MPa) than either Fibrekor (14.4 MPa) or Parapost (17.5 MPa). Bond strengths in the crown section were significantly higher than those in any of the three root areas at P<0.05. Neither the eugenol-containing sealer (Roth's 801) nor the bonding agents had any effect on bond strength. Conclusions: Post type and root region may affect bond strengths while sealer type or bonding agent do not affect bond strengths.
Division: IADR/AADR/CADR General Session
Meeting:2002 IADR/AADR/CADR General Session (San Diego, California) Location: San Diego, California
Year: 2002 Final Presentation ID:425 Abstract Category|Abstract Category(s):Dental Materials: III - Ceramics and Cements
Authors
Kurtz, John S
( Private Practice, Glendale, AZ, USA
)
Bowles, Walter R.
( University of Minnesota, Minneapolis, MN, USA
)
Perdigao, Jorge
( University of Minnesota, Minneapolis, MN, USA
)
Geraldeli, Saulo
( University of Minnesota, Minneapolis, MN, USA
)
Hodges, James S.
( University of Minnesota, Minneapolis, MN, USA
)