1. Dental luting cement dr shabeel pn Bond Strength Strength
Flow (viscosity)
Wetting
Film thickness (<25 microns)
Solubility
Working,Setting time
Esthetic
dr shabeel pn
*Complication

2. Dental luting Cement Zinc phosphate Polycarboxylate Glass ionomer
RMGI cement
Resin cement

3. Zinc phosphate Over 100 yrs of clinical experience Routine application
Post-op sensitivities
Low hardness
High solubility pH
No bond with tooth

4. Polycarboxylate Molecular bonding to tooth substance (2MPa) Cost
Low F¯ release
Low post-op sensitivities
Low hardness
solubility

5. Glass ionomer Molecular bonding to tooth substance F¯ release
Cost-Eff.
Minimal dimentional change
Occa. post-op sensitivities
Sensitive to water
Limited application (ceramics)
(3-5MPa)
(High caries risk)

6. RMGI Molecular bonding to tooth substance F¯ release Low solubility
Fewer post-op sensitivities
Application ? (ceramics,composite)
(>10MPa)

7. Resin cement High adhesive quality (18-20MPa) ⇧ Retention
High hardness
Low solubility
All metal, ceramic,composite(indirect)
Occa. Post-op sensitivities

8. Adhesive quality Non-adhesive (zinc phosphate)
Micromechanical bonding (resin cement)
Molecular adhesion (polycarboxylate,GI,RMGI)

9. Dental Cement Zinc phosphate Polycarboxylate Glass ionomer RMGI cement
Resin cement
Conventional
Adhesive

10. Advantage conventional cement
Easy handling
Moisture tolerance
No pre-Tx steps
Routine for metal base

11. Advantage resin cement
Excellent mechanical properties
High bond strength with pre-Tx step
High aesthetics/translucency
Suitable for Ceramic, Porcelain, Composite,Metal

12. Resin cement
Matrix
Primer
Filler
Coupling agent

13. Resin cement Matrix - Dimethacrylate Primer- Dicrylate
Filler - Quartz, silica
Coupling agent- Silane dimethacrylate

14. Resin cement Total etch Rely X ARC,Variolink II ,Calibra ,C&B
Self-etch Panavia F
Self-Adhesive Rely X Unicem

15. Adhesion Dentin/enamel (micromachanical bond)
Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silane
Metal (sandblasting)(metal bonding adhesive)
Fiber post

16. Adhesion Dentin/enamel (micromachanical bond)
Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silane
Metal (sandblasting)(metal bonding adhesive)
Fiber post

17. Adhesion Dentin/enamel (micromachanical bond)
Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silane
Metal (sandblasting)(metal bonding adhesive)
Fiber post

18. Adhesion Dentin/enamel (micromachanical bond)
Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silane
Metal (sandblasting)(metal bonding adhesive)
Fiber post

19. Why are fiber post?
Clinical success rate: Less root fracture than with metal posts: Dentine-like flexural strenght avoids the “wedge” effect of stiff and hard metal posts.
root
fracture!
no local peak forces,
no root fracture
fiber post
metal
Esthetics: the new post is translucent and does not shine through ceramic or composite restorations
3. Easy and conservative removal with drills if endodontic re-treatment is required
further advantages: no corrosion, easy cutting of over-length, light-translucent...

20. Resin cement Bond strength > Zinc phosphate 10 times ↑ Retention
Reinforced ceramic - base Crown
Adhesive system (micromachanical bond-tooth)
(chemical bond-porcelain,metal)
Low solubility
↓ leakage

21. Pre-treatment procedure

22. Pre-treatment procedure

23. Pre-treatment procedure

24. Polymerization Light-cured/Dual cure (2 vials - Base,Catalyst)
Self cure/auto cure
Dual cure

25. Adhesion Dentin/enamel (micromachanical bond)
Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silane
Metal (sandblasting)(metal bonding adhesive)
Fiber post
Adhesive cement bonding
to tooth ,alloy structure

26. Clinical Tips Anesthetic Isolate (pack cord) Light cure 2-3 sec
Include 3-5 shades,silane
Remove solvent-can inhibit setting of resin cement
Excess bonding –poor fit,low strength
Temp NE

27. Shade
Opaque –veneer + Tetracycline
Clear (translucent)
Vita shade