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COMPARISON OF SHEAR BOND STRENGTH OF CERAMIC BRACKETS BONDED TO ENAMEL PREPARED WITH CONVENTIONAL ACID- ETCHING AND SELF–ETCHING PRIMER BONDING SYSTEMS

Objectives: To compare the mean shear bond strength of ceramic brackets bonded to enamel prepared with conventional acid-etching and self-etching primer.
Methods: A total of 50 extracted teeth (25 in each group) were included in this study. In Group-1, Etching gel containing 35% phosphoric acid (3M Unitek) was applied while in Group-2, Transbond plus self etching primer (3M Unitek) was applied.
Results: Comparison of mean shear bond strength of conventional acid etching and self-etching primer showed 33.26±8.27 and 25.18±7.74, respectively. Difference between two groups was statistically significant (P=0.001).
Conclusions: In conclusion, the mean shear bond strength in both groups was clinically acceptable. But the bond strength of ceramic brackets using self-etching primer for conditioning enamel before bonding was found significantly less than that of ceramic brackets bonded using conventional acid etching (25.18±7.74 vs 33.26±8.27 MPs).
Division: Pakistan Section Meeting
Meeting: 2014 Pakistan Section Meeting (Lahore, Pakistan)
Location: Lahore, Pakistan
Year: 2014
Final Presentation ID: 0057
Abstract Category|Abstract Category(s): Dental Materials 1: Adhesion - Bond Strength Testing and Mechanisms
Authors
  • Rasheed Khan, Amna  ( The Children's Hospital and Institute of Child Health , Lahore , Punjab , Pakistan )
  • Ahmed, Farhan  ( The Children's Hospital and Institute of Child Health , Lahore , Punjab , Pakistan )
  • Waheed, Ahmed  ( The Children's Hospital and Institute of Child Health , Lahore , Punjab , Pakistan )
  • Mubeen, Talha  ( The Children's Hospital and Institute of Child Health , Lahore , Punjab , Pakistan )
  • Malik, Amna  ( The Children's Hospital and Institute of Child Health , Lahore , Punjab , Pakistan )
    • SESSION INFORMATION
    Poster Session
    Postgraduate Poster Competition
    Saturday, 10/25/2014 , 09:00AM - 05:00PM
    TABLES
    Comparison of mean shear bond strength (MPa) conventional acid etching and self-etching primer
    GroupMeanStandard deviation
    Group-A
    (Conventional acid etching)
    		33.268.27
    Group-B
    (Self etching primer)
    		25.187.74
    t value : 3.563 P value : P = 0.001
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