Lab 1/19 Material Selection - LiDi vs Zirc - Shade Selection - Communication w Lab Flashcards
Flexural strenght least to most:
feldspatic, leucite based, LiDi, Alumina, Zirconia
Light transmission most to least:
feldspatic, leucite based, LiDi, Alumina, Zirconia
CTE of the veneering ceramic in relation to that of zirconia:
the same as or slightly lower than
Define monolithic:
formed of a single large block of stone
Can zirconia be monolithic?
yes
Can zirconia be used as a framework design?
yes
General trend, as translucency of zirconia inc, this dec:
4-Oint Bending strength (MPa)
Higher translucency, Standard zirconia or cubeX^2 Zirconia:
cubeX^2 Zirconia:, 49% vs. 30%
Relative flexural strength, highest to lowest, of CubeX^2 zirconia, IPS emax, and standard zirconia
standard zirconia, cubex^2, zirconia, IPS Emax
Place in order of increasing translucency: LiDi LT, LiDi HT, Lava Zirconia
Lava Zirconia, LiDi LT, LiDi HT
TF? 2 different NDM shades can lead to the same crown shade outcome.
T
2 structures that conol man movements:
TMJ, anterior teeth
Make this for incisal edge position guide:
custom made incisal guide
Core material choices for ACC:
alumina, zironcia
Types of LiDi (emax):
press, layered, milled, monolithic
Metal-Ceramic alloys:
Au-Pt Noble (yellow), Au Pd Noble (white), high palladium noble (white), base metal (non precious)
Non-ceramic alloys:
Au 70% High noble (yellow), Au 40% noble (yellow), Ag-Pd Noble (white), base metal (non-precious)
Zirconia as a core material can be used either as:
monolithic or layered
Framework designs for metal ceramic restos:
porcelain-lingua;l/ occlusal, metal-lingual/occlusal
TF? Letal-lingual/occlusal restos cover the incisal edge of anteriors with metal.
F. about half way up lingual surface with metal
Centric contacts should be __mm from metal-porcelain junction.
1.5mm
Can layering ceramic be added on to zirconia copoing?
yes, esp for proximal contacts
How to tell the difference visually bw fully layered zirc, labial layered zirc, and monolithic zirc?
check
More esthetic, monolithic or layered ceramic?
layered
TF? NDM guide is req for ACC restos.
T
NDM sf:
natural die material
NDM guide is used to match:
the existing tooth shade
If the outer ceramic material is translucent enough, the shade that will come through will be that of:
the cement shade
Define phtohraphy
check