A preliminary approach in the prediction of orthodontic bone remodeling by coupling experiments, theory and numerical models

Daniel George (1) , Delphine Wagner (1, 2) , Yves Bolender (2) , Pascal Laheurte (3) , Boris Piotrowski (3) , Paul Didier (3) , Morad Bensidhoum (4) , Valentin Herbert (1) , Camille Spingarn (1) , Yves Rémond (1)

1 ICube - Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie
2 Faculté de chirurgie dentaire - Strasbourg
3 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux
4 B3OA (UMR 7052 / U1271) - Biologie, Bioingénierie et Bioimagerie Ostéo-articulaires

Orthodontic treatments are based on a prolonged application of mechanical forces on the teeth through orthodontic appliances, leading to tooth movement due to the remodeling of the surrounding bone. Bone response is dependent on the biological reactions occurring in the periodontal ligament (PDL) and more specifically on those related to vascular changes (Pavlin and Gluhak-Heinrich 2001). Hence, optimal forces and moments are required to obtain the desired tooth displacements without generating deleterious effects. Although the biological events occurring during orthodontic tooth movement are nowadays better understood, the correlation between orthodontic force systems, desmodontal reactions and bone remodeling is not well established (Meikle 2005). Little is known about the forces and moments developed on more than two adjacent teeth (Badawi et al. 2009). In this work, we focus our analysis on a buccal upper right canine in infraclusion and extract the experimental measurements of the mechanical forces developed onto the complete dental arch. These are then transferred into a numerical finite element (FE) model to determine the PDL deformation and hence, through a theoretical numerical model, quantify the cellular mechanobiological reactions at the root of orthodontic bone remodeling.

Mots clés: Orthodontic tooth movement; mechanical forces; periodontium; finite element model; oxygen effect

Domaines: Biomécanique [physics.med-ph]

Daniel George, Delphine Wagner, Yves Bolender, Pascal Laheurte, Boris Piotrowski, et al.. A preliminary approach in the prediction of orthodontic bone remodeling by coupling experiments, theory and numerical models. Computer Methods in Biomechanics and Biomedical Engineering, 2020, 44th Congress of the Société de Biomécanique, 22 (Sup.1), pp.S60-S61. ⟨10.1080/10255842.2020.1713479⟩. ⟨hal-03225583⟩