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IADR Abstract Archives

Bond Strength of Self-etching Adhesive to Human Enamel and Dentin

Bond Strength of Self-etching Adhesive to Enamel Dentin.  T.M. VUU, J.C. CHANG, L.M. PINZON, J.M. POWERS.  University of Texas Dental Branch at Houston, Houston, TX.

 

Purpose: Tensile bond strengths of 37% phosphoric acid/One-Step Plus (PA, 5th generation) and Tyrian SPE/One-Step Plus (SPE, 6th generation) bonding systems to human enamel and superficial dentin were investigated with 5 composites. Methods: Buccal and lingual enamel and superficial dentin surfaces of molars were prepared. Five composites were used for bonding to the teeth with 2 bonding systems in the form of a truncated cone. Bonding systems were used following manufacturer’s instructions. Specimens were subjected to 1000 thermocycles in 5 and 55 C water with a dwell time of 20 seconds in each temperature bath. Specimens were debonded with a testing machine at 0.5 mm/min. Results: Means with standard deviations in parenthesis (n=5) are listed.

Conditions

SI

Z250

VT

TPH

TCHB

Enamel/SPE

14.2 (3.8)

19.1 (5.1)

17.7 (3.9)

16.3 (2.5)

17.0 (3.8)

Enamel/PA

18.3 (4.7)

19.4 (5.0)

24.4 (3.6)

17.7 (5.7)

18.6 (5.7)

Dentin/SPE

9.1 (4.4)

15.1 (6.7)

14.7 (6.0)

10.7 (2.9)

6.7 (3.8)

Dentin/PA

11.3 (4.6)

25.4 (10.2)

20.1 (7.6)

20.6 (6.2)

20.0 (4.9)

Fisher’s PLSD intervals (p=0.05) for comparisons of means among composites, between substrates and between 2 bonding systems were 3.4, 2.1 and 2.1MPa, respectively. Bond failures were mixed. Conclusions: After thermocycling, the PA bonding system had higher bond strengths than the SPE bonding system in both enamel and dentin with all 5 composites. The SPE bonding system performed better on enamel than dentin with all 5 composites. Supported by NIH/NIDCR T35 DE07252-09. Products provided by manufacturers.

 


Division: AADR/CADR Annual Meeting
Meeting: 2003 AADR/CADR Annual Meeting (San Antonio, Texas)
Location: San Antonio, Texas
Year: 2003
Final Presentation ID: 564
Abstract Category|Abstract Category(s): Dental Materials: I - Adhesion-Composite Bond Strength
Authors
  • Vuu, Thai M.  ( University of Texas Dental Branch at Houston, Houston, TX, USA )
  • Chang, Jeffrey C.  ( University of Texas Dental Branch at Houston, Houston, TX, USA )
  • Pinzon, Lilliam Marie  ( University of Texas Dental Branch at Houston, Houston, TX, USA )
  • Powers, John M.  ( University of Texas Dental Branch at Houston, Houston, TX, USA )
    • SESSION INFORMATION
    Poster
    Self-etching Adhesive Systems - II
    03/13/2003