Systematized procedure of crown preparation

The theoretical considerations of the marginal fit of crowns are discussed and the conventional approach in tooth-cutting procedures is addressed. Gingival marginal surface irregularities described as "peak and valley" and "stepping" effects can leave a cement line in excess of 80 microns after cementation. A regimented method of tooth reduction for metal ceramic crowns, using specially designed rotary cutting instruments, is described. The suggested technique accomplishes the crown preparation more rapidly with a consistent standard of excellence.