Dr. Gratton joined the Department of Prosthodontics in 2002 and is currently an associate professor. Before coming to the University of Iowa, he was an assistant professor in prosthodontics at the University of Western Ontario's School of Dentistry. He was also a dental staff member of the London Health Sciences Centre, University Campus, in the Oral and Maxillofacial Rehabilitation Unit, Department of Dentistry.
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Dr. Gratton is a current member of the Canadian Association for Dental Research, the Canadian Dental Association, the Ontario Dental Association, the Royal College of Dental Surgeons of Ontario, the American College of Prosthodontists, the American Prosthodontic Society, the Academy of Oseeointegration, and the International Association for Dental Research.