- Adhesion = union between two different surfaces (tooth / material)
- Works by:
- Micromechanical
- Chemical
- Or a combination of both
The key to all adhesion (this defines everything)
- There is no “one adhesive technique”
- There is one technique per substrate
Substrates you work with in clinical practice
- Enamel
- Dentin
- Root cementum
- Metal
- Ceramic / porcelain
- Composite
- Glass ionomer
What changes between substrates
- Composition (mineral vs organic)
- Moisture
- Surface energy
- Etching capability
- Type of possible bond
Most common clinical mistake
- Using the same protocol for everything
Result:
- Debonding
- Leakage
- Restoration failure
Guide concept
- 1 substrate = 1 protocol
- No unnecessary theory
- Only what works clinically