title: Systematized procedure of crown preparation.
abstract: 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.
authors.affiliation: Department of Operative Dentistry, University of Sydney, Faculty of Dentistry, Australia.
authors.forename: E V
authors.initials: EV
authors.lastname: Bass
authors.forename: M C
authors.initials: MC
authors.lastname: Kafalias
mesh_terms: D002244:Carbon; D003442:Crowns; D003737:Dental Cavity Preparation / Q000295:instrumentation / Q000379:methods*; D003743:Dental Enamel / Q000033:anatomy & histology; D003754:Dental High-Speed Equipment; D018130:Diamond; D004867:Equipment Design; D005881:Gingiva / Q000033:anatomy & histology; D006801:Humans; D007180:Incisor; D014414:Tungsten; D017973:Tungsten Compounds
chemical_list: D017973:Tungsten Compounds; C002802:tungsten carbide; D002244:Carbon; D018130:Diamond; D014414:Tungsten