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A three‐dimensional finite element analysis of the sports mouthguard
Author(s) -
Gialain Ivan O,
Coto Neide Pena,
Driemeier Larissa,
Noritomi Pedro Yoshito,
Dias Reinaldo Brito e
Publication year - 2016
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1111/edt.12265
Subject(s) - mouthguard , enamel paint , dentin , materials science , ultimate tensile strength , incisor , dentistry , maxillary central incisor , composite material , orthodontics , medicine
Background/Aim The aim of this study was to evaluate the compressive and tensile stresses on dentin and enamel in five different situations: no mouthguard and mouthguards from 1 mm thickness up to 4 mm thickness, using finite element analysis. Materials and methods A three‐dimensional geometry of an upper right central incisor was obtained from a computed tomography and transformed into a mesh separating enamel from dentin. A mouthguard was created covering the buccal surface of the enamel in different thicknesses, and a rubber ball with a velocity of 5 m s −1 was made as the impact object. Results The maximum principal stress and the minimal principal stress were evaluated in all situations on dentin and enamel. Both maximum and minimal stress on enamel had the greatest value on the control situation (no mouthguard), and their value decreased as the mouthguard thickness increased. The reduction ranged from 66.62% to 85.5% for compressive stress and from 9.76% to 33.37% for tensile stress on enamel. The results for dentin were similar among the situations with or without mouthguards. Conclusion The mouthguard had beneficial effect considering the stresses on enamel, and between the mouthguard thickness of 3 and 4 mm, there was minimum difference.