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