The changing face of dental education: the impact of PBL.

The past decade has seen increasing demands for reform of dental education that would produce a graduate better equipped to work in the rapidly changing world of the twenty-first century. Among the most notable curriculum changes implemented in dental schools is a move toward Problem-Based Learning (PBL). PBL, in some form, has been a feature of medical education for several decades, but has only recently been introduced into dental schools. This paper discusses the rationale for the introduction of a PBL pedagogy into dental education, the modalities of PBL being introduced, and the implications of the introduction of PBL into dental schools. Matters related to implementation, faculty development, admissions, and assessment are addressed. Observations derived from a parallel-track dental PBL curriculum at the University of Southern California (USC) are presented and discussed. This program conforms to the Barrows (1998) concept of "authentic PBL" in that the program has no scheduled lectures and maintains a PBL pedagogy for all four years of the curriculum. The USC dental students working in the PBL curriculum have attained a high level of achievement on U.S. National Dental Boards (Part I) examinations, significantly superior to their peers working in a traditional lecture-based curriculum.