Lab 2/9 Cementation of ACC Flashcards
Ordered steps of delivery fo crown:
Proximal contacts, marginal integrity, stability, occlusion
Adjust the crown of ACC resto with this:
red striped diamond w lots of water or extraoral polisher (blue, pink, white, disks and cones)
Is it prefered to cut from the tooth or the crown when adjusting ACCs?
tooth, to not create flaws in ceramic, red striped diamond bur w lots of water
Materials to be cemented, ACC’s
predominantly glass, particle filled glass, polycrystaline
Type of AC restos to be cemented:
full coverage, inlay, onlay, veneer
4 considerations when cementing ACC:
material to be cemented, type of restoration, type of cement, thickness/transparaency of resto
Factors that define whether you need to etch:
materials to be cemented, type of restoration
Etch for these all ceramic restos types:
full coverage, inlay, onlay, veneer
TF? ACC must be etched prior to cementation.
T
All ceramic restos that must be bonded:
inlays, onlays, veneers
Types of etching for all ceramic restos:
air abraded (miro-etch), chemically etched
When to use air abrasion (micro-etch)
polycrystalline ceramics and glass infiltrated alumina/zirconia
2 types of air abrasion (micro-etch):
w Al203 or w tribochemical silica coating Al203 particles
What does air abrasion creates:
holes in ceramic, increasing sa
Creates larger holes in the ceramic, aiumina particles or silica coating alumina particles?
silica coated alumina particles (check)
When to etch wit hydrofluoric acid:
Aluminum oxide, leucine, LiDi
Chemical etch w hydrofluoric acid creates this type of surface before applying coupling agent:
frosty surface, honey comb pattern via SEM
Filler for predominately glass:
aluminum oxide
Filler for particle filled glass:
leucite, LiDi, or glass infiltrated alumina
Fillers for polycrystalline:
aluminum oxide, zirconium oxide
Surface tx for predominately glass restos (aluminum oxide filler):
10% HF acid, 1m, rinse and dry, apply silan for 1m, air dry
Surface tx for Leucite, particle-filled glass:
5% HF acid for 1m, rinse and dry, silane for 1m, air dry
Surface tx for LiDi particle-filled glass:
5% HF acid for 20s, rinse and dry, silane for 1m, air dry
Surface tx for glass-infiltrated alumina particle-filled glass:
Air abrasion w tribochemical silica coating or aluminum oxide, adhesion promoting agent containing MDP and dry
Surface tx for aluminum oxide polycrystalline:
Air abrasion w aluminum oxide, adhesion promoting agent containing MDP and dry
Surface tx for zirconium oxide polycrystalline:
Air abrasion w 50-micrometer aluminum oxide powder at 7lb/in^2, adhesion promoting agent containing MDP and dry
Ceram and IPS e.max are both examples of this type of ceramic:
predominantly glass
IPS Empress Esthetic is an example of this type of ceramic:
Leucite, particle-filled
IPS e.max press is an example of this type of ceramic:
LiDi
Vita In-Ceram Alumina/ Spinell/ Zirconia are all examples of this type of ceramic:
Glass infiltrated alumina, particle-filled glass
2 factors the define whether you should lute conventionally or adhesively:
material to be cemented, type of resto: full coverage, inlay, onlay , veneer
All ceramic restos that have to be luted adhesively:
inlay, onlay, veneer
Types of cements for all ceramic restos:
resin cement or RMGI
What determines when to use light cure, chemical cure or dual cure?
thickness and transparency of the ceramic restos
When to use total etch:
veneer cementation
technique using a 30% to 40% phosphoric acid to prep enamel/ dentin for adhesive procedures:
total etch
PANAVIA F 2.0:
self etching, dual cure, F releasing cemetn for use w metals, ceramics and ceramic oxides (sirconia) restos
This is the gold standard for resin cements:
PANAVIA F 2.0
What type of metal is zirconia?
metal oxide
Where to cure on the crown for dual cure:
at the margins
How to self-cure the paste for dual cure:
by applying OXYGUARD II to the margins then wat 3m and wash
Panavia cementation of crowns, bridges, inlays, and onlays mado of conventional porcelain, ceramic, hybrid ceramics or composite resin:
snadblast, ultrasonic, clean, dry, phosphoric acid etch for 5s, rinse, dry, primer to adherent surfaces, dry, Primer A + B in equal amts applied to abutments surface for 30s, remove escess primer, dry, paste A + B in equal amts, mix for 20s, apply to resto, cement resto to abutmnet ssurface and remove excess paste, light cure margins OR self cure the paste by applying OXYGUARD II to the margins then wait 3m and wash
How to adjust ACC after cementation:
red strip diamond bur w lots of water OR intraoral polishers (blue, pink, white, disks or cones)