{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T23:00:07Z","timestamp":1769727607073,"version":"3.49.0"},"reference-count":33,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2023,10,11]],"date-time":"2023-10-11T00:00:00Z","timestamp":1696982400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Dental Traumatology"],"published-print":{"date-parts":[[2024,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background\/Aim<\/jats:title>\n                    <jats:p>Mouthguards are used to prevent dental trauma and orofacial injuries. The aim of this study was to evaluate the influence of ethylene\u2010vinyl acetate (EVA) aging by thermocycling on elastic modulus, stress, strain and shock absorption ability of different ethylene\u2010vinyl acetate brands used for mouthguards.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Thirty EVA samples with a dimension of 70\u2009\u00d7\u200910\u2009\u00d7\u20093\u2009mm were obtained from four commercial brands (Bioart\u00ae, Erkodent\u00ae, Polyshok\u00ae and Proform\u00ae). Fifteen samples were submitted to 10,000 cycles (5\u00b0C\u201355\u00b0C) in a thermocycling machine with an immersion time of 30\u2009s and a transfer time of 5\u2009s. The samples were submitted to a uniaxial tensile test in a universal testing machine to calculate the elastic modulus. Data were statistically evaluated by two\u2010way ANOVA and Holm\u2010Sidak test. A three\u2010dimensional model of the anterior maxilla was created using Rhinoceros 5.0. A 3\u2009mm custom\u2010fitted mouthguard was simulated. The three\u2010dimensional volumetric mesh was generated using the Patran software (MSC Software) with isoparametrics, 4\u2010noded tetrahedral elements and exported to Marc\/Mentat (MSC Software) as element number 134. A non\u2010linear dynamic impact analysis was performed in which a rigid object struck the central incisor at a speed of 5\u2009m\/s. The stresses were evaluated by the modified von Mises criteria and the strains were also recorded.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Statistically significant differences were observed for elastic modulus values (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u2009.001). Mean and standard deviation values (MPa) without thermocycling were: Bioart (34.5\u2009\u00b1\u20090.9), Erkodent (15.0\u2009\u00b1\u20090.4), Polyshok (17.3\u2009\u00b1\u20090.4), Proform: (20.6\u2009\u00b1\u20090.8); and with thermocycling: Bioart (25.4\u2009\u00b1\u20090.8), Erkodent (10.7\u2009\u00b1\u20090.5), Polyshok (13.3\u2009\u00b1\u20090.6), Proform (13.1\u2009\u00b1\u20090.6). The thermocycling process reduced stress and strain levels regardless of the mouthguard materials. Shock absorption ability calculated based on the strain values was increased with thermocycling process.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The thermocycling process, regardless of the commercial brand, reduced the stress\/strain and increased the shock absorption ability of mouthguards.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/edt.12896","type":"journal-article","created":{"date-parts":[[2023,10,12]],"date-time":"2023-10-12T01:23:30Z","timestamp":1697073810000},"page":"204-212","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["The effect of the simulated aging by thermocycling on the elastic modulus of ethylene\u2010vinyl acetate brands and stress\/strain development during an impact: An in vitro and\n                    <scp>3D\u2010FEA<\/scp>\n                    analysis"],"prefix":"10.1111","volume":"40","author":[{"given":"Paulo Victor de Moura","family":"Costa","sequence":"first","affiliation":[{"name":"Department of Oral Rehabilitation Federal University of Goi\u00e1s  Goi\u00e2nia Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tainah Costa","family":"Firmiano","sequence":"additional","affiliation":[{"name":"Department of Oral Rehabilitation Federal University of Goi\u00e1s  Goi\u00e2nia Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gilberto Ant\u00f4nio","family":"Borges","sequence":"additional","affiliation":[{"name":"Department of Dental Materials and Restorative Dentistry University of Uberaba  Uberaba Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rodrigo Pereira","family":"Dantas","sequence":"additional","affiliation":[{"name":"School of Dentistry Faculdades de Ci\u00eancias Odontol\u00f3gicas, FCO  Montes Claros 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