Rotary And More has introduced the VanGuard™ Premium Multi-use Diamond line. VanGuard Premium Diamonds were tested by a leading independent dental research and education firm and received an excellent rating. VanGuard compared favorably to all others tested when cutting through zirconia. Unlike others, VanGuard does not offer specialized Zirconia instruments because all diamond shapes offered work just as well as the tested shape in cutting zirconia crowns. VanGuard Premium Diamonds are packaged in plastic boxes and color-coded for easy visualization, selection and organization in the clinic.