The microtensile bond strength test: Its historical background and application to bond testing

Area of Science:

• Dental Materials Science
• Biomaterials Engineering
• Adhesion Science

Background:

• The microtensile bond strength (μTBS) test was introduced in 1994.
• It has become a standard and versatile method in bond strength testing laboratories worldwide.
• The μTBS test, combined with morphological and spectroscopic analyses, significantly contributes to the development of dentin adhesive systems.

Purpose of the Study:

• To review the historical background, inception, and applications of the μTBS test.
• To highlight the μTBS test's greater discriminative capability compared to traditional macro-shear bond tests.
• To propose future directions for enhancing the μTBS testing methodology.

Main Methods:

• Review of historical data and scientific literature on the μTBS test.
• Analysis of the μTBS test's application in evaluating adhesive performance.
• Discussion of the test's potential for assessing regional bond strengths and long-term stability.

Main Results:

• The μTBS test is a highly effective and discriminative method for assessing dental adhesive bond strength.
• It has enabled detailed evaluation of resin adhesion to various dentin substrates and cavity regions.
• The test facilitates the assessment of long-term resin adhesion stability over time.

Conclusions:

• The μTBS test is a crucial tool in advancing dentin adhesive systems.
• Further improvements to the μTBS test are possible and recommended.
• Continued research and application of the μTBS test will drive innovation in dental adhesion.