Dr. Lang was Chair, Department of Prosthodontics, University of Michigan School of Dentistry from 1971 until 1996. He is currently Professor Emeritus in the School of Dentistry. Dr. Lang is a Diplomate of the American Board of Prosthodontics, and past president of the Academy of Prosthodontics, the American Board of Prosthodontics, and the Academy of Prosthodontics Foundation. He is the Chair of the Editorial Council of The Journal of Prosthetic Dentistry. He has been the recipient of numerous awards and honors for his research and scholarly activities in Prosthodontics.
Dr. Lang's current research activities are focused on ProceraŽ, precision of fit at the abutment/framework interface, and abutment screw mechanics.