Strength assessment of endodontically-treated teeth based on a 3D numerical model
Journal Title: Journal of Stomatology (Czasopismo Stomatologiczne) - Year 2013, Vol 66, Issue 1
Abstract
Introduction. Knowledge of the biomechanical behaviour of endodontically-treated teeth underloading in the oral cavity should be included in the clinical proceedings. Because it is difficult to analyze stress distributions in vivo, computer methods are increasingly being used. Aim of the study. To perform a comparative numerical analysis of stresses and strains in healthy and endodontically-treated teeth with the canal filled with gutta-percha or resilon. Materials and methods. The study was carried out on a 3D model of the upper incisor with an extremely well-preserved crown (with only an endodontic access opening) after virtual simulation of canal preparation with 2% taper instruments and gutta-percha or resilon filling at 2 mm from the root apex. The model was exposed to a load of 100 N corresponding to the occlusal situation of the incisors in centric occlusion. To determine the distribution of stresses and strains, the finite element analysis was used. Results. The maps of stress and strain distributions in all three analyzed models were very similar to each other. Increased stress concentrations was found cervically and at the middle of the root (mainly on the labial side). Stresses grew from the root apex towards the crown, with the highest value at the outer surface of the tooth, and were the lowest inside the canal. Strains ε were minimal and reached values of 10-4. Conclusion. Within the limitations of the study, it can be concluded that the physiological load of the incisor with wellpreserved crown after endodontic treatment causes stress and strains similar to a healthy tooth. Filling the canal with either gutta-percha or resilon results in comparable stress distribution. An indication of the most strained areas, which are the cervical region and the middle parts of the root, is of clinical value.
Authors and Affiliations
Anna Kierklo, Kamil Cybula, Małgorzata Pawińska, Łukasz Derpeński
Keywords
Related Articles
- EP ID EP57681
- DOI -
- Views 96
- Downloads 0
Extraoral tooth 48 extraction – sequence of medical errors and complications.
This paper presents a case of irregularities and complications that occurred during and after the treatment of a female patient who required extraction of tooth 48 (the right lower third molar). First, a procedure other...
Blood flowinmandibularvessels–itsevaluationandprognosticimplications including Doppler techniques – review of literature
Introduction: Alveolar bone atrophy, mainly in the mandible, is a common clinical problem in patients undergoing prosthetic treatment.Aim of the study: To analyze hypotheses concerning alveolar atrophy pathogenesis on th...
SignificantCariesIndexin12-year-old children of varied social background from Lower Silesia region
Aim of the study: To assess the incidence of dental caries in 12-year-old children living in Lower Silesia Region. Material and methods: For the study 201 children aged 12 years and living in urban (big and small towns)...
Ocena wytrzymałości zębów leczonych endodontycznie na podstawie trójwymiarowego modelu numerycznego
Wstęp. Wiedza o biomechanicznych zachowaniach zębów leczonych endodontycznie podczas obciążeń występujących w jamie ustnej powinna być uwzględniana w postępowaniu klinicznym. Ponieważ trudno jest analizować rozkłady napr...
Symmetry of dental arches in patients with unilateral primary and secondary cleft palate
Introduction. Primary and secondary cleft palate may cause disturbances in the development of the maxilla in three spacial dimensions. Patients with this defect are usually characterised by cross-bites, pseudo Class III...