1. Tooth preparation for indirect esthetic restorations;Scoble;J Calif Dent Assoc,1990
2. Conservative preparations for cast restorations;Schillingburg;Dent Clin N Am,1976
3. The relationship between the location of subgingival crown margins and gingival inflammation;Newcombe;J Periodontol,1974
4. Marginal fit of gold inlay castings;Christensen;J Prosthet Dent,1966
5. Soft tissue management with metal-ceramic and all-ceramic crowns;Donovan;J Calif Dent Assoc,1998