The Fissurotomy instrument head shape allows early diagnosis and conservative preparation of fissure caries, often without the use of anesthesia. A conservative method for the diagnosis and treatment of hidden caries. • Tip of bur is smaller and more conservative than 1/4 round. • Fine carbide tip will not strip quickly like thin diamonds. • Virtually pain free to the DEJ... in most cases no anesthesia is needed. • Ideal cavity preparation form for a flowable composite. • Cleaner, more controlled and less costly than air abrasion.