Directly MPCVD diamond-coated Si3N4 disks for dental applications

Laser patterning was successful for increasing the Si3N4 surface roughness, but this feature was less important for the grinding efficiency than the CVD diamond grain size and shape. A CVD diamond disk removed 1.7 times more material in the ceramic grinding than the commercial one, which evidenced wear by extensive grain pullout in the grinding of the metal alloy.