Dr Maltha is Adjunct Associate Professor Emeritus in Oral Biology at the Radboud University Medical Center, Nijmegen, The Netherlands. He graduated as a biologist at the University of Utrecht, Netherlands in 1971. In 1982 he defended his PhD thesis entitled “The process of tooth eruption in beagle dogs”, at the University of Nijmegen. He was Head of the Laboratory of Oral Biology and Craniofacial Biology, which is part of the Department of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Center.
He is an internationally recognized expert in the field of biology of orthodontic tooth movement. For his scientific work he was the first to be appointed as the ‘’Distinguished Teacher’’ of the European Orthodontic Society in 2006. He has supervised numerous PhD theses and has authored or co-authored over 130 scientific publications related to craniofacial-biology. Most publications deal with the biological and biomechanical aspects of orthodontic tooth movement or with the biology of intra-oral wound healing related to cleft palate surgery and its consequences for maxillary and midfacial growth. Dr Maltha has lectured extensively on these topics nationally and internationally.