A 2009 study by the Arizona State University demonstrated that Crystal Zirconia can achieve a megapascel strength of more than 1500 MPa when sintered in a microwave and tested according to the standard 3-point bending method in accordance with ANSI/ADA specification No 69 for dental ceramics. This is the highest number EVER reported for zirconia tested with the ANSI/ADA standard.
The study compared Crystal High Strength Zirconia, Crystal High Translucency Zirconia, and 3M LAVA Zirconia. Crystal's High Strength formula was tested according to the standard test and using larger samples sometimes associated with ceramics material testing. In both testing methodologies, Crystal HS was the strongest material tested. However, using microwave sintering, Crystal HS set an all-time high in the standard test, producing nearly 1500 MPa on average, and well over 1400 MPa on all samples tested. By contrast, the highest of the LAVA and Crystal High Translucency zirconia tested were in the 1200-1250 range.
To date, no other testing has produced a zirconia which has demonstrated a 1500 MPa strength result from ANSI/ADA No 69 testing, making Crystal High Strength Zirconia the strongest material on the market. By using state-of-the-art presses, materials, and pre-sintering, we believe that Crystal High Strength Zirconia are the strongest zirconia blocks and discs that can scientifically be formulated using current manufacturing technologies.
To request a copy of the ASU Study, please send us an request via the Contact Us form on this website.