ST-ML is the strength-oriented disc in Zirdent's multilayer zirconia range. It combines a shade gradient through the layers with a flexural strength of 1100 MPa and a translucency of 42%, for restorations that carry high chewing loads.
Indications
Zirdent lists anterior and posterior full-contour crowns, 3-unit anterior and posterior bridges, anterior coping bridges of more than three units, full-contour zirconia bridges of more than four units, implant crowns, Maryland bridges, copings and inlays.
Formats
The disc is made from Sinocera® zirconia powder and comes in 98 mm, 95 mm and 92 × 75 mm formats, 10–25 mm thick. It can be combined with Zirdent's 16-shade and 26-shade colouring liquid systems.



