%0 Journal Article
%T Finite element analysis of adhesive endo-crowns of molars at different height levels of buccally applied load
%A Istabrak Hasan
%A Matthias Frentzen
%A Karl-Heinz Utz
%A Daniel Hoyer
%J Journal of Dental Biomechanics
%D 2012
%I 
%R 10.1177/1758736012455421
%X This study aimed to evaluate the biomechanical behaviour of adhesive endo-crowns and the influence of their design on the restoration prognosis when four loading positions are applied from the restoration¨Ctooth junction. Two three-dimensional finite element models for the lower first molar were developed: endo-crown as a monobloc and endo-crown of a primary abutment and a full crown. Four crown loading positions were considered: 5, 6, 7 and 8 mm. A force of 1400 N was applied buccally on the middle of the mesiodistal width. No differences were observed for the two endo-crowns concerning restoration displacement and the distribution of equivalent von Mises stress and total equivalent strain. Shifting the position of the applied load to 8 mm resulted in an increase in the displacement from 25 to 42 ¦Ìm and an increase of equivalent von Mises stress concentration at the tooth. The height of load application on the restoration has a significant role in the prognosis of endo-crowns.
%K endo-crown
%K monobloc
%K primary abutment
%K loading position
%K equivalent von Mises stress
%K total equivalent strain
%U http://dbm.sagepub.com/lookup/doi/10.1177/1758736012455421