12 mm
The 12 mm disc suits single crowns and short bridges and gives the best yield for a case mix of standard crowns and bridges.
ST Multilayer
ST Multilayer
Regular price
$59.00
Sale price
$59.00
Regular price
ST Multilayer Zirconia is an excellent “general variety” product.
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Upcera ST Multilayer Zirconia
ST Multilayer Zirconia is Upcera’s 3Y-TZP disc with a chroma gradient running from cervical to incisal. At 1300 MPa, it is the strongest material in the Upcera range, and it maintains that strength through every layer because the chemistry doesn't change from top to bottom.
Translucency is 43%. That is the lowest of the shaded discs, and it is the price of strength. Sintering temperature is 1530 degrees Celsius, the hottest cycle Upcera publishes.
Upcera calls ST a general-purpose product, and that's fair. If a lab could stock one disc and nothing else, this would be a reasonable choice for most bench work.
Built for Strength, Machinability and Everyday Production
The appeal here is simple. You get full 3Y strength without milling a plain white blank and spending an hour staining it back to life.
1300 MPa flexural strength, constant through the disc
43% translucency, suited to posterior and general work
Chroma gradient from cervical to incisal built into the blank
Pre-shaded in 16 VITA classical shades plus BL1 to BL4
Known for clean machining and low bur wear
That last point matters more than it sounds. 3Y mills harder than 4Y or 5Y, and ST has a reputation among technicians for cutting cleanly without chewing through burs, which not every high-strength disc can do.
UPCERA
ST Multilayer Zirconia Discs: Specs and Technical Highlights
| Specification | Detail |
|---|---|
| Material | 3Y-TZP, chroma gradient |
| Flexural strength | 1300 MPa |
| Translucency | 43% |
| Shades | 16 VITA classical plus BL1 to BL4 |
| Diameter | 98 mm |
| Thickness | 12 mm |
| Sintering Temperature | 1530 Degree Celcius |
| Finishing | Glaze, stain or polish |
These ST multilayer zirconia discs run in open-architecture CAD/CAM systems. Watch the furnace. At 1530 degrees, ST fires 50 degrees hotter than the TT One series and 80 degrees hotter than TT. Do not load ST and TT discs on the same tray, because one cycle cannot serve both.
ST Multilayer Zirconia: Applications and Indications
Labs use ST multilayer zirconia for bridges more than anything else, and the strength figure explains why. At 1300 MPa, the material stops limiting span length.
Posterior crowns and full-contour molars
Long-span posterior bridges
Full-arch frameworks and implant work
Multi-unit restorations in either arch
Bruxism cases and heavy-function patients
For anterior cases where the incisal edge has to transmit light, 43% will look flat. Move to TT One Multilayer at 47% or Explore Esthetics at up to 48.8%. For strength with a little more incisal character, Explore Functional blends 3Y and 4Y across 1027 to 1300 MPa.
Thickness guide
ST Multilayer Dental Blocks in Every Thickness
14 mm and 16 mm
for multi-unit bridges and deeper preparations
18 mm and 20 mm
for longer spans and taller units
22 mm and 25 mm
for full-arch frameworks
30 mm
for maximum vertical height on implant cases
Why Buy ST Multilayer Zirconia from Zirconia Guys
Zirconia Guys ships Upcera discs to labs across the US from Iselin, New Jersey.
Genuine Upcera stock, never grey-market or repackaged
All 20 shades on the shelf, so a shade match never holds up a case
Fast domestic shipping, with better pricing at volume
Full Upcera range in one place, including ST White, TT One and Explore
Buy ST multilayer zirconia online or call +1 732 664 6644 to open a lab account.
Frequently Asked Questions
How does it compare with Explore Functional?
How does it compare with Explore Functional?
ST Multilayer is pure 3Y at a flat 1300 MPa and 43% translucency. Explore Functional blends 3Y and 4Y, so strength falls from 1300 to 1027 MPa as translucency climbs to 46.6% near the incisal. ST is stronger at the restoration's top. Explore Functional looks better there.
What is the difference between ST Multilayer, ST Pre-Shaded and ST White?
What is the difference between ST Multilayer, ST Pre-Shaded and ST White?
Same 3Y-TZP, same 1300 MPa, same 1530-degree cycle. Multilayer has a built-in chroma gradient. Pre-Shaded is one flat shade through the blank. White needs infiltration or staining, the slowest route, but it gives a technician full control.
Can I run it on a speed sintering cycle?
Can I run it on a speed sintering cycle?
First, check your furnace profile against Upcera’s published program. 3Y at 1530 degrees is a demanding cycle, and a rapid program written for a 4Y disc will leave ST underfired, which shows up as poor strength rather than poor colour.
Does nesting orientation matter?
Does nesting orientation matter?
Yes. The lighter layer goes at the incisal. If you nest it upside down, the gradient inverts, and on a posterior crown you will see a dark occlusal surface that staining cannot correct.
Is 43% translucency enough for anterior work?
Is 43% translucency enough for anterior work?
For a posterior-facing premolar or a case with a porcelain cutback, yes. For a central incisor next to a natural tooth, no. That case needs a higher disc.
