Affiliation: | 1. Department of Prosthodontics, The University of Iowa College of Dentistry and Dental Clinics, N-409 Dental Science, Iowa City, IA 52242, USA;2. Department of Preventive and Community Dentistry, The University of Iowa College of Dentistry and Dental Clinics, N337-1 Dental Science, Iowa City, IA 52242, USA;3. Department of Preventive and Community Dentistry, The University of Iowa College of Dentistry and Dental Clinics, W327 Dental Science, Iowa City, IA 52242, USA |