title: Is it time for a fifth?
authors.forename: W R
authors.initials: WR
authors.lastname: Laney
mesh_terms: D002983:Clinical Competence; D003479:Curriculum; D004497:Education, Dental / Q000379:methods*; D006801:Humans; D007396:Internship and Residency; D013674:Technology, Dental / Q000193:education; D013997:Time Factors