Distribuição de estresse em incisivo central superior sob situações traumáticas semelhantes com diferentes cargas
uma análise tridimensional de elementos finitos
DOI:
https://doi.org/10.7308/aodontol/2013.49.2.01Palavras-chave:
Tooth injuries, Finite element analysis, Biomechanics, Computing methodologies, Three-dimensional imagingResumo
Objetivo: O objetivo deste estudo foi analisar a distribuição de tensões nas estruturas dentoalveolares de um incisivo central superior submetido a duas situações de carga de impacto.
Materiais e métodos: As forças de carga que se seguem foram aplicadas usando um modelo tridimensional de elementos finitos: uma força de 500 N a um ângulo de 45° sobre a superfície vestibular coronária; uma força de 2000 N atuando no mesmo sentido e no mesmo ponto sobre a superfície do dente.
Resultados: Tensões prejudiciais foram observadas na segunda situação, o que sugere danos ao dente e ao tecido adjacente. No entanto, o dano encontrado em tecidos moles, tais como polpa dentária foi insignificante.
Conclusão: Lesões decorrentes de situações traumáticas foram mais prejudiciais para a integridade do dente e os seus estruturas associadas ao tecido duro.
Downloads
Referências
Bastone EB, Freer TJ, McNamara JR. Epidemiology of dental trauma: A review of the literature. Aust Dent J. 2000; 45:2-9.
Ravishankar TL, Kumar MA, Ramesh N, Chaitra TR. Prevalence of traumatic dental injuries to permanent incisors among 12-year-old school children in Davangere, South India. Chin J Dent Res. 2010; 13:57-60.
Thelen DS, Bårdsen A. Traumatic dental injuries in an urban adolescent population in Tirana, Albania. Dent Traumatol. 2010; 26:284-90.
Andreasen JO, Andreasen FM, Andersson L. Textbook and color atlas of traumatic injuries to the teeth. 4th ed. Oxford: Blackwell Munksgaard; 2007.
Huang HM, Tsai CY, Lee HF, Lin CT, Yao WC, Chiu WT et al. Damping effects on the response of maxillary incisor subjected to a traumatic impact force: a nonlinear finite element analysis. J Dent. 2006; 34:261-8.
Boccaccio A, Ballini A, Pappalettere C, Tullo D, Cantore S, Desiate A. Finite Element Method (FEM), mechanobiology and biomimetic scaffolds in bone tissue engineering. Int J Biol Sci. 2011; 7:112-32.
Silva BR, Silva FI Jr, Moreira Neto JJS, Aguiar ASW. Finite Element Method application in dentistry: analysis of scientific production from 1999 to 2008. Int J Dent. 2009; 8:197-201.
Vasudeva, G. Finite element analysis: a boon to dental research. Internet J Dent Sci. 2009; 6:1-6.
Dejak B, Mlotkowski A. Finite element analysis of strength and adhesion of cast posts compared to glass fiber-reinforced composite resin posts in anterior teeth. J Prosthet Dent. 2011; 105:115-26.
Szucs A, Bujtar P, Sandor GK, Barabas J. Finite element analysis of the human mandible to assess the effect of removing an impacted third molar. J Can Dent Assoc. 2010; 76:72-7.
Poiate IAVP, Vasconcellos AB, Andueza A, Pola IRV, Poiate E Jr. Three dimensional finite element analyses of oral structures by computerized tomography. J Biosci Bioeng. 2008; 106:606-9.
Silva BR, Moreira Neto JJS, Silva FI Jr, Aguiar ASW. Finite element analysis applied to dentoalveolar trauma: methodology description. ISRN Dentistry. 2011; 16:1-7.
Poiate IAVP, Vasconcellos AB, Poiate E Jr, Dias KRHC. Stress distribution in the cervical region of an upper central incisor in a 3D finite element model. Braz Oral Res. 2009; 23:161-8.
Poiate IAVP, Vasconcellos AB, Santana RB, Poiate E Jr. Three-dimensional stress distribution in the human periodontal ligament in masticatory, parafunctional, and trauma loads: finite element analysis. J Periodontol. 2009; 80:1859-67.
Huang HM, Ou KL, Wang WN, Chiu WT, Lin CT, Lee SY. Dynamic finite element analysis of the human maxillary incisor under impact loading in various directions. J Endod. 2005; 31:723-7.
Miura J, Maeda Y. Biomechanical model of incisor avulsion: a preliminary report. Dent Traumatol. 2008; 24:454-7.
Stuart CH, Schwartz SA, Beeson TJ. Reinforcement of immature roots with a new resin filling material. J Endod. 2006; 32:350-3.
Andreasen JO, Andreasen FM, Meja`re I, Cvek M. Healing of 400 intra-alveolar root fractures. 1. Effect of pre-injury and injury factors such as sex, age, stage of root development, fracture type, location of fracture and severity of dislocation. Dent Traumatol. 2004; 20:192–202.
Nyashin YI, Nyashin MY. Biomechanical modelling of periodontal ligament behavior under various mechanical loads. Acta Bioeng Biomech. 2000; 2:67-74.
Bechtle S, Habelitz S, Klocke A, Fett T, Schneider GA. The fracture behavior of dental enamel. Biomaterials. 2010; 31:375-84.
Baldassiri M, Margolis HC, Beniash E. Compositional determinants of mechanical properties of enamel. J Dent Res. 2008; 87:645-9.
Cochrane NJ, Cai F, Huq NL, Burrow MF, Reynolds EC. New approaches to enhanced remineralization of tooth enamel. J Dent Res. 2010; 89:1187-97.
Poolthong S, Mori T, Swain MV. Determination of elastic modulus of dentin by small spherical diamond indenters. Dent Mater J. 2001; 20:227- 36.
Majorana A, Pasini S, Bardellini E, Keller E. Clinical and epidemiological study of traumatic root fractures. Dent Traumatol. 2002; 18:77-80.
De Las Casas EB, Cornacchia TP, Gouvêa PH, Cimini CA Jr. Abfraction and anisotropy--effects of prism orientation on stress distribution. Comput Methods Biomech Eng. 2003; 6:65-73.
Natali AN. Dental biomechanics. London: Taylor & Francis/CRC Press; 2003.
Limbert G, Middleton J, Laizans J, Dobelis M, Knets I. A transversely isotropic hyperelastic constitutive model of the PDL. Analytical and computational aspects. Comput Methods Biomech Biomed Eng. 2003; 6:337-45.
Natali AN, Carniel EL, Pavan PG, Sander FG, Dorow C, Geiger M. A visco-hyperelastic- damage constitutive model for the analysis of the biomechanical response of the periodontal ligament. J Biomech Eng. 2008; 130:73-9.
Provatidis CG. A comparative FEM-study of tooth mobility using isotropic and anisotropic models of the periodontal ligament. Finite Element Method. Med Eng Phys. 2000; 22:359-70.
Tanaka M, Naito T, Yokota M, Kohno M. Finite element analysis of the possible mechanism of cervical lesion formation by occlusal force. J Oral Rehabil. 2003; 30:60-7.
