Dental luting cementBond StrengthStrengthFlow (viscosity)WettingFilm thickness (

Dental luting CementZinc phosphatePolycarboxylateGlass ionomerRMGI cementResin cement

Zinc phosphateOver 100 yrs of clinical experienceRoutine applicationPost-op sensitivitiesLow hardnessHigh solubilitypHNo bond with tooth

PolycarboxylateMolecular bonding to tooth substance (2MPa)CostLow F releaseLow post-op sensitivitiesLow hardnesssolubility

Glass ionomerMolecular bonding to tooth substanceF releaseCost-Eff.Minimal dimentional changeOcca. post-op sensitivitiesSensitive to waterLimited application (ceramics)(High caries risk)(3-5MPa)

RMGIMolecular bonding to tooth substanceF releaseLow solubilityFewer post-op sensitivitiesApplication ? (ceramics,composite)(>10MPa)

Resin cementHigh adhesive quality (18-20MPa) RetentionHigh hardnessLow solubilityAll metal, ceramic,composite(indirect)Occa. Post-op sensitivities

Adhesive qualityNon-adhesive (zinc phosphate)Micromechanical bonding (resin cement)Molecular adhesion (polycarboxylate,GI,RMGI)

Dental CementZinc phosphatePolycarboxylateGlass ionomerRMGI cementResin cementConventional Adhesive

Advantage conventional cementEasy handlingMoisture toleranceNo pre-Tx stepsRoutine for metal base

Advantage resin cementExcellent mechanical propertiesHigh bond strength with pre-Tx stepHigh aesthetics/translucencySuitable for Ceramic, Porcelain, Composite,Metal

Resin cement MatrixPrimerFillerCoupling agent

Resin cement Matrix - DimethacrylatePrimer- DicrylateFiller - Quartz, silica Coupling agent- Silane dimethacrylate

Total etch Rely X ARC,Variolink II ,Calibra ,C&B

Self-etch Panavia F

Self-Adhesive Rely X Unicem

Resin cement

AdhesionDentin/enamel (micromachanical bond)Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silaneMetal (sandblasting)(metal bonding adhesive)Fiber post

AdhesionDentin/enamel (micromachanical bond)Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silaneMetal (sandblasting)(metal bonding adhesive)Fiber post

AdhesionDentin/enamel (micromachanical bond)Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silaneMetal (sandblasting)(metal bonding adhesive)Fiber post

AdhesionDentin/enamel (micromachanical bond)Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silaneMetal (sandblasting)(metal bonding adhesive)Fiber post

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.

metalfiber postEsthetics: 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...

Resin cement Bond strength > Zinc phosphate 10 times RetentionReinforced ceramic - base CrownAdhesive system (micromachanical bond-tooth) (chemical bond-porcelain,metal)Low solubility leakage

Pre-treatment procedure

Pre-treatment procedure

Pre-treatment procedure

PolymerizationLight-cured/Dual cure (2 vials - Base,Catalyst)Self cure/auto cureDual cure

AdhesionDentin/enamel (micromachanical bond)Porcelain (hydrofluoric acid,Ammoniumfluoride acid)+ silaneMetal (sandblasting)(metal bonding adhesive)Fiber post

Adhesive cement bonding to tooth ,alloy structure

AnestheticIsolate (pack cord)Light cure 2-3 secInclude 3-5 shades,silaneRemove solvent-can inhibit setting of resin cementExcess bonding poor fit,low strengthTemp NE

Clinical Tips

ShadeOpaque veneer + TetracyclineClear (translucent)Vita shade