Pages 533-540, Language: EnglishNuckles / Sneed / Bayme / Collins / Hook / WelshDuring a 15-week period, six full-time faculty members supervised the replacement of amalgam restorations by clinical dental students. The tooth numbers, the amalgam surfaces replaced, the reasons for replacement, and the instructors were compared. The students removed 956 surfaces of amalgam from 436 teeth. The primary reasons cited for replacement were marginal breakdown (69%) and caries (33%).