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Eur J Dent Educ. 2011 Nov;15(4):250-4. doi: 10.1111/j.1600-0579.2010.00672.x. Epub 2010 Dec 29.

Evaluation of tooth preparations - a comparative study between faculty members and pre-clinical students.

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Department of Prosthodontics, University of Erlangen-Nuremberg, Erlangen, Germany.



Preparation of teeth is a basic technique for dental treatment and plays an essential role in pre-clinical education. The purpose of this study was to evaluate whether undergraduate students' evaluations of prepared teeth were consistent with faculty assessments and correlated with students' performance in test preparations.


Thirty four of 52 dental students having attended a pre-clinical course on basic prosthodontic topics including tooth preparation volunteered to participate in this study. The students were given 10 casts each containing one tooth with an intentionally applied preparation fault of a certain type prepared by an experienced clinician. The students were asked to mark on a list the fault type found in every tooth. The association of students' ratings with their performance during the course was analysed by means of a contingency table, and a generalised linear model was used to compare students' and faculty ratings (α = 0.05).


No significant difference between students' and faculty ratings could be found by analysis of deviance (P = 0.953). Significant deviations of fault detection probabilities from their group mean were found for six of ten fault types. No significant association between students' performance in test preparations and students ratings could be found (P = 0.564).


It was possible to achieve a level of calibration within the group of students, which was comparable to that in the group of faculty members.


Calibration of both students and examiners remains to be an issue with the teaching concepts applied in this study.

[Indexed for MEDLINE]

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