Stavros Kiliaridis

Dr. Stavros Kiliaridis

Dr Stavros Kiliaridis is Professor Emeritus, Dept of Orthodontics, University of Geneva, Switzerland, where he was Professor and Chairman during the period 1999-2021. Since 2020 he is adjunct Professor at the University of Bern, Switzerland. He graduated from the Aristotle University of Thessaloniki, Greece, and received his PhD from Göteborg University, Sweden, where he also completed his specialist education in Orthodontics and worked as Associate Professor, while running a part-time private practice in Thessaloniki. He is member of Angle Society of Europe.

His research is focused on masticatory muscle influence on dentofacial growth, post-emergent phases of tooth eruption, diagnostic methods of oral function, dentofacial aberrations in individuals with Neuromuscular Diseases, outcome of different orthodontic interventions, side effects linked to orthodontic treatment. Over his career he was recipient of major research grants from the Swedish Medical Research Council and the Swiss National Science Foundation. He has authored or co-authored over 250 research papers and several book-chapters, and is reviewer for many international scientific journals. He has been speaker at numerous orthodontic congresses and lectured in many universities worldwide.


He was founder and president (2017-2019) of the Network for Erasmus Based European Orthodontic Programmes (NEBEOP). He was recipient of the European Orthodontic Society Essay Award, 1988 and was honored as Alton Moore Annual Memorial Lecturer, University of Washington, 2002, and Sheldon Friel Lecture laureate, European Orthodontic Society, 2015. He was given the Paul Herren Award from the University of Bern, 2021, and the Distinguished Teacher Award by the European Orthodontic Society, 2022.

TopicQ: Shall we still consider the role of the muscles in Orthodontics?

Experimental and clinical studies indicate the important role of masticatory muscles on the dentofacial growth. Nevertheless, is the role of the muscles limited only to their influence on the mechanisms of the dentofacial growth, or do the orofacial muscles interfere with the orthodontic treatment, influencing the treatment results and their stability?

During the presentation it will be discussed if the rate of orthodontic tooth movement is influenced by the occlusal loading exerted by the antagonist teeth. The extent of displacement of teeth without occlusal interference from their antagonists is larger than when antagonist teeth interfere with the movement. Moreover, the presence of antagonistic teeth has been shown to influence the extent of tooth movement differently in individuals with different functional capacity of the masticatory muscles; under experimental conditions, greater tooth displacement was observed in individuals with weak masticatory muscles.

This was also the case in the treatment of Class II malocclusion, when the shift of the occlusion from Class II to Class I was “easier” in subjects with weak masticatory muscles, although the results of treatment two years later were less stable than in subjects with strong muscles.

Last but not least, the treatment of anterior open bite will be seen under the light of experimental and clinical studies in respect to masticatory muscles’ influence on the variation in the treatment results and stability.