Crown Cementation and Air Abrasion

luting

what type of cement:

- Primarily provides mechanical retention by filling

the gap between the tooth and restoration.

resin

what type of cement:

- Provides chemical and micromechanical bonding to the tooth and many restorative

materials.

luting

what type of cement:

- Used when the crown preparation has good

retention and resistance form.

resin

what type of cement:

- Used when additional retention is needed or when

bonding is required for the restorative material.

luting

what type of cement:

- Easier to use and clean up.

resin

what type of cement:

- More technique-sensitive; requires proper bonding

protocols.

luting

For a well retentive zirconia crown use a .... cement

RMGI (luting cement)

most PFM crown are cemented with .....

zinc phosphate; GI; RMGI (all luting cements)

Most gold crowns are typically cemented with ...., ...., or ....

adhesive resin

E.max crown Usually require ..... cement after hydrofluoric acid etching and silane

application.

before

when initially trying in the crown, a BW should be taken ..... checking occlusal contacts

the bur is spinning

when adjusting crowns it is important for strokes to go in the direction .....

diamond paste

finishing crown adjustments with ...... in silicone cup: creates near glaze like shine

never

when should you air abrade E.max

if you made adjustments to the intaglio

when should you air abrade the zirconia/gold/PFM

zirconium oxide

Next place Ivoclean, which contains an alkaline suspension of ..... that attracts any phosphate ions contaminating the intaglio surface, and rinse well ( 20 sec recommended). This surface is now clean and ready for the primer/bonding agent.

zirconia

for .... crowns it is important to put non-cured scotchbond in the intaglio

E.max

Almost a must to use RelyX Unicem 2 for cementing ...... crowns due to it's increased strength

11

there is a ....% chance a tooth with a crown will need RCT

silane

The reason for the ..... BEFORE try-in of the lab-etched (5-10% HF) Emax crowns is that the phosphate groups in the silane chemically bond to the ions released on the surface of the glass after HFl etch.

silane

it is important to .... a E.max crown before try in and after Ivoclean