Home Print this page Email this page Users Online: 805
Home About us Editorial board Search Ahead of print Current issue Archives Submit article Instructions Subscribe Contacts Login 
ORIGINAL ARTICLE
Year : 2013  |  Volume : 3  |  Issue : 2  |  Page : 65-69

Stress distribution of new generation of Twisted Files in comparison with ProTaper: A finite element analysis


Department of Conservative Dentistry, Sri Dharmasthala Manjunatheshwara, SDM College of Dental Sciences and Hospital, Sattur, Dharwad, India

Correspondence Address:
Harsha Pujari
E2 - 204 Emerald Chs Ltd, Highland Park, Amar Nagar, Darga [rd], Mulund [West], Mumbai - 400 080
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1658-5984.118149

Rights and Permissions

Aim: To compare and evaluate the stress distribution of new generation of Twisted File in comparison with ProTaper under bending or torsional conditions using a finite - element analysis model. Materials and Methods: Two NiTi files, a ProTaper file and the latest generation nickel titanium file which is the Twisted File of similar tip diameter were scanned using White light scanning system. Through this a real size digitized models of the two brands of NiTi instruments were obtained. Then, the outline of the instrument was extracted from the stacks of 3D data in software. Finally a mesh of linear, eight-noded, hexahedral elements was overlaid onto the rendered 3D image. The behavior of the instrument under bending or torsional loads was then analyzed mathematically in the software (ABAQUS V6, 5-1) taking into consideration the non linear mechanical characteristic of NiTi material. The results were expressed as von Mises stresses and were calculated by the von Mises criteria. Results: Higher stress values were seen in Twisted Files than the ProTaper universal, however, the angular deflection was seen to be more in Twisted Files. Conclusion: As more angular deflection was seen in Twisted File it was more flexible than ProTaper Universal but did not have the uniform stress distribution like the ProTaper universal.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed2741    
    Printed73    
    Emailed1    
    PDF Downloaded502    
    Comments [Add]    

Recommend this journal