Three‐dimensional finite element stress analysis of teeth adjacent to a traumatized incisor
| Autor: | Guilherme de Araújo Almeida, Andomar Bruno Fernandes Vilela, Priscilla Barbosa Ferreira Soares, Antheunis Versluis, Monise de Paula Rodrigues, Carlos José Soares, Crisnicaw Veríssimo |
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| Rok vydání: | 2018 |
| Předmět: |
Dental Stress Analysis
Finite Element Analysis 0206 medical engineering 02 engineering and technology Finite element stress analysis 03 medical and health sciences 0302 clinical medicine stomatognathic system Occlusion medicine Humans Displacement (orthopedic surgery) Maxillary central incisor Orthodontics Dental trauma business.industry Tooth Injuries 030206 dentistry Stress distribution medicine.disease 020601 biomedical engineering Incisor stomatognathic diseases Biting Oral Surgery business Traumatized incisor |
| Zdroj: | Dental Traumatology. |
| ISSN: | 1600-9657 1600-4469 |
| Popis: | Background/aims Dental trauma is the cause of several consequences to the injured tooth. However, the stresses and strains at adjacent teeth non-directly impacted as a possible cause of sequelae are still unknown. The aim of this study was to evaluate the stress distribution in incisors adjacent to an upper central incisor when it suffers a frontal impact in order to identify a potential explanation for sequelae in non-traumatized teeth. Materials and methods A three-dimensional (3D) finite element model of the maxillary central incisors, lateral incisors and canines was created from a cone-beam scan of a patient with normal occlusion. Non-linear dynamic impact analysis was performed, simulating the right central incisor being impacted by a steel ball with a velocity of 10 m/s. A functional chewing load (100 N) on the palatal surface of the central incisor was simulated for comparison. Displacements, strains and modified von Mises stresses were calculated for the adjacent teeth. Results During impact on the central incisor, the adjacent teeth showed root displacement. Considerable stress concentrations were observed on the palatal surfaces, proximal and labial surfaces of teeth adjacent to the traumatized incisor. Stresses in the adjacent teeth were higher than stresses calculated during functional biting. Compressive stresses were concentrated at the proximal areas of the adjacent incisors. High levels of deformation were found in the root dentin of adjacent teeth during the traumatic event. Conclusions A frontal impact on an anterior tooth generated stresses at the roots of adjacent teeth. These stresses may play a role in clinically observed sequelae of teeth adjacent to traumatized teeth. |
| Databáze: | OpenAIRE |
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