1. Prevalence of defective dental restorations;Moore;J. Prosthet Dent,1967
2. Replacement of silver amalgam restorations by 50 dentists during 246 working days;Richardson;Dent J,1973
3. Expanded functions for dental assistants: preliminary study;Abramowitz;JADA,1966
4. The cause of failure of restorations: a literature review;Elderton;J Dent,1976
5. Causative factors resulting in the placement of dental restorations: a survey of 8,891 restorations;Barnes;Milit Med,1973