Preprint Communication Version 1 Preserved in Portico This version is not peer-reviewed

Biomechanical Behavior Evaluation of a Novel Hybrid Occlusal Splint-mouthguard for Contact Sports: 3D-FEA

Version 1 : Received: 18 October 2021 / Approved: 19 October 2021 / Online: 19 October 2021 (13:33:35 CEST)

How to cite: Kalman, L.; Dal Piva, A.M.D.O.; de Queiroz, T.S.; Tribst, J.P.M. Biomechanical Behavior Evaluation of a Novel Hybrid Occlusal Splint-mouthguard for Contact Sports: 3D-FEA. Preprints 2021, 2021100277 (doi: 10.20944/preprints202110.0277.v1). Kalman, L.; Dal Piva, A.M.D.O.; de Queiroz, T.S.; Tribst, J.P.M. Biomechanical Behavior Evaluation of a Novel Hybrid Occlusal Splint-mouthguard for Contact Sports: 3D-FEA. Preprints 2021, 2021100277 (doi: 10.20944/preprints202110.0277.v1).

Abstract

Orofacial injuries are common occurrences during contact sports activities; however, there is an absence of data regarding the performance of hybrid occlusal splint mouthguards, especially during compressive loading. To evaluate the total deformation and stress concentration, a skull model was selected and duplicated to receive two different designs of mouthguard devices: one model received a conventional custom-made mouthguard (MG) with 4-mm thickness and the other received a novel hybrid occlusal splint-mouthguard (HMG) with the same thickness. Both models were subdivided into finite elements. The frictionless contacts were used, and a nonlinear analysis was performed simulating the compressive loading in occlusion. The results were presented in von-Mises stress maps (MPa) and Total Deformation (mm). A higher stress concentration in teeth was observed for the model with the conventional MG, while the HMG design displayed a promising mechanical response with lower stress magnitude. The HMG de-sign displayed a higher magnitude of stress on its occlusal portion than the MG design. The hybrid mouthguard (HMG) reduced (1) jaw displacement during chewing and (2) the generated stresses in maxil-lary and mandibular teeth.

Keywords

mouthguard; occlusal splint; trauma; finite element analysis; athletic injuries

Subject

MEDICINE & PHARMACOLOGY, Dentistry

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