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Bond strength test: role of operator skill.
O A Adebayo1, M F Burrow, M J Tyas
1School of Dental Science, The University of Melbourne, Victoria, Australia.
Australian Dental Journal
|May 23, 2008
Summary
Operator experience significantly improves microshear bond strength testing reliability. As skill in material handling increases, bond strength outcomes become more consistent, crucial for clinical success with new dental adhesives.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Clinical Dentistry
Background:
- Operator variability, test methods, and substrate materials are known influencers of bond strength test outcomes.
- Understanding factors affecting bond strength is critical for reliable dental material performance.
- This study specifically investigated operator skill in material handling.
Purpose of the Study:
- To determine if operator experience and skill in material handling influence microshear bond strength outcomes.
- To assess the impact of learning curves on the reliability of bond strength testing.
- To provide insights into achieving optimal outcomes when using new dental adhesives.
Main Methods:
- Retrospective analysis of data from six preliminary enamel microshear bond strength tests.
- Evaluation of two dental adhesives: Clearfil SE Bond and Adper Single Bond 2.
- Calculation and assessment of mean/median bond strengths, standard deviations, and coefficients of variation over time.
Main Results:
- Observed a gradual increase in mean microshear bond strengths for both adhesives.
- Noted a decrease in standard deviations and coefficients of variation with increasing operator experience.
- Documented a more uniform distribution of bond strength results in later test sets, indicating improved reliability.
Conclusions:
- Operator skill in material handling is a critical determinant of bond strength test outcomes.
- Improved operator skill correlates with enhanced bonding reliability.
- Clinicians should familiarize themselves with new adhesives to ensure optimal clinical performance and bond strength.
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