Multilayer discs are not a marketing upgrade — they change how light behaves inside the restoration. But they are not automatically better for every case.
The gradient, explained
A 6-layer multilayer disc steps translucency and chroma from dentin-like at the base to enamel-like at the top, mimicking natural depth. Monolayer discs are a single uniform shade — simpler to shade, predictable for try-in, but flatter optically.
When to reach for which
| Use case | Pick |
|---|---|
| Anterior single crown, no staining | Multilayer |
| Long-span bridge, max strength | Monolayer HT |
| Fast chairside, uniform shade | Monolayer |
Both start from the same 3Y-TZP powder; the difference is the colour gradient, not the base strength. Browse multilayer and monolayer zirconia grades side by side.
What the gradient buys you
A 6-layer disc runs from about 1200 MPa at the dentin core to about 700 MPa at the enamel rim. Monolayer HT sits flat near 1350 MPa but looks opaque. Pick the gradient for anteriors and monolithic posteriors where strength wins.
| Indication | Pick |
|---|---|
| Anterior crown | Multilayer |
| Molar full-contour | HT monolayer |
| Implant bridge | HT / UT monolayer |
Staining a monolayer
Use a diluted dentin stain at the cervical third only; over-staining the incisal kills translucency. Fire at 700 °C for 60 s — never exceed 800 °C or the glaze crazes.