Adhesive Dentistry: A Primer for Dentin Bonding-Adhesive Dentistry: A Primer for Dentin Bonding

Video Transcription

Video Summary

Major Michael Struthers gave a detailed webinar on adhesive dentistry, covering its history, mechanisms, clinical use, and future directions. He began by explaining how adhesive dentistry aims to bond restorative materials to enamel and dentin, emphasizing the challenges posed by dentin’s water and organic content. He then reviewed the evolution of dental bonding agents from the first generation in the 1950s to modern universal adhesives, describing how bond strength and predictability improved over time.<br /><br />He highlighted key generations: early systems with weak, unreliable bonding; total-etch systems that became the foundation of modern adhesion; self-etch systems that simplified application; and universal adhesives that can be used across multiple substrates and bonding strategies. He stressed that although newer systems are convenient, simplification often comes with reduced long-term durability, especially if used incorrectly.<br /><br />Struthers explained the three main bonding mechanisms: surface wetting, micromechanical retention, and chemical interaction. He discussed the importance of proper enamel etching, hybrid layer formation, resin tag penetration, and the role of 10-MDP as a highly effective functional monomer. He also reviewed issues that reduce bond longevity, especially hydrolytic degradation from water and the role of matrix metalloproteinases.<br /><br />In clinical recommendations, he identified OptiBond FL as the gold standard for three-step etch-and-rinse bonding and Clearfil SE Bond II as a leading self-etch option. He advised using universal adhesives cautiously and following manufacturer instructions, particularly for indirect restorations and core buildups. Finally, he discussed emerging bioactive and antibacterial materials, while noting that many remain unproven long term.

Keywords

adhesive dentistry

dental bonding agents

enamel and dentin bonding

total-etch systems

self-etch systems

universal adhesives

micromechanical retention

hybrid layer formation

10-MDP

hydrolytic degradation

OptiBond FL