Comparison of Postbaccalaureate and Baccalaureate Graduates' Performance in First and Second Years of Dental School.

Postbaccalaureate programs help predental students strengthen their basic science knowledge and improve their study skills before applying or reapplying for dental school admission. A high percentage of postbac students are admitted to and graduate from dental schools, but gaining greater understanding of how well these students perform in key areas of the first two years' curriculum would be useful for the design of those programs. The aim of this study was to evaluate postbac dental students' performance in the D1 and D2 years at one U.S. dental school compared to dental students with a four-year baccalaureate degree only. Performance assessed was the students' dental school grades in basic science courses, in all D1 and D2 didactic courses, and on preclinical simulation lab practical exams. Didactic and practical scores were gathered anonymously for the Classes of 2013-18 at the College of Dental Medicine-Arizona (CDMA) at Midwestern University, where postbac students with master's degrees from the affiliated College of Health Sciences made up 6-19% of each class. The two cohorts chosen for comparison were students with baccalaureate degrees only and students with one-year Master of Arts degrees from the College of Health Sciences. The scores of these postbac dental students and their non-postbac peers were found to be comparable in the basic science courses. However, for all the didactic courses combined, the non-postbac cohort had significantly higher mean scores than the postbac cohort for the fall quarter 2 and winter quarter 2 in 2013-15 and all years combined. The practical scores for the two cohorts were not significantly different for any year. Overall, this study demonstrated that the MA program in the College of Health Sciences prepared the postbac students to compete on an equal level with the non-postbac students in the CDMA D1 and D2 curriculum.