In this lecture, we discuss resin composite filling materials and other resin-based dental materials, focusing on how they bond to enamel and dentin using the acid etch technique. This session provides a step-by-step explanation of modern adhesive dentistry concepts, essential for dental students and clinicians.
🔹 Enamel Bonding
Learn how phosphoric acid etching creates microporosities in enamel, allowing resin materials to penetrate and form a strong micromechanical bond.
🔹 Dentin Bonding Mechanism
We explore dentin adhesion through the three critical steps:
Conditioning – removal of the smear layer
Priming – penetration of hydrophilic monomers
Bonding – formation of the hybrid layer
Understand how resin infiltrates demineralized dentin to achieve durable adhesion.
🔹 Techniques Explained
This lecture compares the two major adhesive approaches:
Total Etch (Etch-and-Rinse) Technique
Self-Etch Adhesive Technique
Their indications, advantages, and clinical applications are clearly discussed.
🔹 Additional Topics Covered
✔ Applications of the acid etch technique
✔ Resin-based luting cements
✔ Classification and generations of dentin bonding agents
✔ Clinical relevance in restorative dentistry
🎓 This lecture is ideal for BDS students, dental interns, postgraduate students, and clinicians seeking a strong foundation in adhesive and restorative dentistry.
PDF Link:
https://drive.google.com/file/d/1qxrc...
0:00 Introduction to adhesion
24:00 acid etch technique for bonding to enamel (acid etch technique and its applications)
1:31:44 Bonding to dentine (background, attempts at chemical bonding, smear layer, conditioning, priming, bonding)
2:43:58 total etch method
2:46:30 self-etching primer method
2:49:09 generation of dentine bonding agents
2:54:20 resin-based luting cements
2:58:43 bonding to alloys, ceramics/porcelain, and amalgam
Reference Book:
Applied Dental Materials by John F. McCabe.
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