Biomechanics of Space Closure with Aligners


This presentation will discuss the key biomechanical components of aligner-based orthodontic treatment. These features are not often discussed but are clinically critical for optimum performance of treatment. It will include a ‘first principle’ based understanding of the biomechanics of aligners, supported by the available literature. Biomechanical concepts, clinical tips, relevant literature, patient treatment will be shared via simple illustration.

Learning objectives

1. A first principle-based understanding of biomechanics of aligner treatment.
2. Treating different malocclusions with aligners: biomechanics and current evidence.
3. Why can’t aligners solve every malocclusion?
4. How can we make aligners work better for us?


Madhur Upadhyay is Associate Clinical Professor and Director, Center for Orthodontic Care at University of Connecticut Health. He is also the Director of the Orthodontic Fellowship Program. Madhur is a Diplomat of the American Board of Orthodontics (ABO) and holds an active membership of The Angle Society.

His research interests include biomechanics of tooth movement and skeletal anchorage, where he has carried out extensive in vivo & in vitro research.

He routinely conducts detailed courses and workshops on ‘Biomechanics in Orthodontics’ at University of Connecticut, University of Illinois, Chicago & Montefiore Medical Center, New York. He has published over 100 scientific papers, book chapters & abstracts in national and international journals and has made numerous scientific presentations at various meeting throughout the world.

He has also been recipient of foundation & industrial grants. His current research focusses on application of Finite Element Modelling & Artificial Intelligence /Machine Learning in Orthodontics.

He is on the editorial board of various orthodontic journals, like; American journal of Orthodontics & Dentofacial Orthopedics (AJODO), Angle Orthodontist (AO), European Journal of Orthodontics (EJO) etc.

He maintains an active private practice in Connecticut. In his spare time, he loves to play & follow tennis. He also has a keen interest in physical sciences, especially astronomy.