• Users Online: 278
  • Home
  • Print this page
  • Email this page
Home About us Editorial board Ahead of print Current issue Search Archives Submit article Instructions Subscribe Contacts Login 
ORIGINAL ARTICLE
Year : 2022  |  Volume : 34  |  Issue : 2  |  Page : 115-120

Biomechanical stress analysis of ceramic and indirect hybrid composite endocrowns: A three-dimensional finite element analysis


Department of Conservative Dentistry and Endodontics, Sri Ramachandra Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), Chennai, Tamil Nadu, India

Correspondence Address:
Dr. Lakshmi Balaji
Department of Conservative Dentistry and Endodontics, Sri Ramachandra Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research (Deemed to be University), No. 1, Ramachandra Nagar, Porur, Chennai - 600 116, Tamil Nadu
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/endo.endo_156_21

Rights and Permissions

Aim: The purpose of this study was to compare equivalent stresses in mandibular first molar restored with endocrowns made of ceramic and indirect composites using three-dimensional (3D)-finite element analysis (FEA). Materials and Methods: Two 3D finite element models of mandibular first molar were designed. One model of intact tooth without any restoration was uses as a control. Another mandibular molar model with endocrown as postendodontic restoration was generated where the tooth was simulated with extensive coronal loss and divided into five groups with different materials such as lithium disilicate, zirconia, feldspathic, resin nanoceramic, and polymer infiltrated ceramic network (PICN). An axial loading force of 300 N at five diverse contacts areas was applied on the occlusal surface. Stress distribution at various regions of tooth, concentrating mainly on root dentin and alveolar bone, was measured using the Von Mises stress criteria by FEA software. Results: The lowest stress concentration in root dentin was seen in the cervical root region of resin nanoceramic endocrown group followed by PICN endocrown, feldspathic ceramic endocrown, intact tooth, zirconia endocrown, and lithium disilicate endocrown. In alveolar bone, the result showed that the lowest stress value was seen in resin nanoceramic endocrown, followed by PICN endocrown, zirconia endocrown, feldspathic endocrown, intact tooth, and lithium disilicate endocrown. Conclusion: Endocrown materials with the modulus of elasticity similar to that of dentin showed better stress distribution than the materials with high modulus of elasticity.


[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
    Viewed154    
    Printed4    
    Emailed0    
    PDF Downloaded31    
    Comments [Add]    

Recommend this journal