The Journal of Indian Prosthodontic Society

ORIGINAL ARTICLE
Year
: 2008  |  Volume : 8  |  Issue : 2  |  Page : 94--97

Influence of cavity preparations and restorative procedures on stress distribution by finite element method


Floriano JC Bello1, Carlos A Cimini Jr2, Rodrigo C Albuquerque3, Walison A Vasconcellos4 
1 Restorative Dentistry, University Federal de Minas Gerais, Brazil
2 Department of Mechanical Engineering, School of Engineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
3 Department Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
4 Department Dentistry, Estadual University of Montes Claros, Montes Claros, Minas Gerais, Brazil

Correspondence Address:
Walison A Vasconcellos
Rua Gabriel Passos 343, São Domingos do Prata, MG
Brazil

The influence of the preparation and restoration of cavities by using composite resin on the stress distribution of the upper central incisor was evaluated through a three-dimensional finite element method. Nine models were constructed. Model 1 was prepared with the enamel, coronary and radicular dentin, pulp and cortical and cancellous bones. In models 2 to 5, the dentin and enamel were removed to simulate interproximal and endodontic access cavity preparations and. In models 6 to 9, the preparations were restored with composite resin. All models were subjected to a 100-N static load with an inclination of 45° at a distance of 2.0 mm from the incisal edge of the palatal surface of the tooth. Compared to healthy teeth, the conservative interproximal cavity preparation resulted in an 80% increase in the maximum von Mises stress concentration, and in the endodontic access cavity, the stress concentration increased to 99%. In the extensive interproximal cavity preparations, the maximum stress concentration increase to 134% compared to that of healthy teeth and in the endodontic access cavity, the stress concentration increased to 173%. The stress concentration in the endodontic access alone increased to 116% compared to that of a healthy tooth. The values of stress concentration for extensive interproximal and two interproximal cavities, increased to 118% and 127%, respectively. It was concluded that the reduction in the dental structure led to an increase in the stress concentration. The biomechanical conditions for cavity restoration with composite resin have been established.


How to cite this article:
Bello FJ, Cimini Jr CA, Albuquerque RC, Vasconcellos WA. Influence of cavity preparations and restorative procedures on stress distribution by finite element method.J Indian Prosthodont Soc 2008;8:94-97


How to cite this URL:
Bello FJ, Cimini Jr CA, Albuquerque RC, Vasconcellos WA. Influence of cavity preparations and restorative procedures on stress distribution by finite element method. J Indian Prosthodont Soc [serial online] 2008 [cited 2021 Apr 23 ];8:94-97
Available from: https://www.j-ips.org/article.asp?issn=0972-4052;year=2008;volume=8;issue=2;spage=94;epage=97;aulast=Bello;type=0