WHAT THE 3/4 RULE CURETTE IS USED FOR The 3/4 Rule Curette is one of the smaller posterior universal curette you’ll find in our collection. The universal mirror ends have sharp cutting edges and rounded tips that are ideal for clearing away both supragingival and subgingival calculus in posterior, hard-to-reach spaces. Every patient you treat in your office will leave with a healthier, more confident smile. Our stainless steel 3/4 Rule Curette has a hollow H4 ergonomic handle made of tempered