If want to work with maximum efficiency then you must consider every detail of how you work.
Preparing a crown is one of dentistry's benchmark procedures. For crowns, many dentists have a set of burs that contains up to a dozen different burs. When I watch dentists work with a huge bur kit the drilling typically takes 30-45 minutes an involves numerous bur changes.
But, it is possible to do an immaculate, text book perfect crown preparation on a posterior tooth with just one bur in most cases. That bur is the 847KR 016.
By eliminating bur changes, keeping the bur on the tooth and your foot on the pedal the drilling can be completed in 2 minutes or less. This is kinder on the patient and far kinder on the pulp!