Eman Ezzat Youssef Hassanien, Gihan Abdel Hady El-Naggar And Omnia Abdel Hameed El Sheehy,

ABSTRACT
Objective: The Study Was Conducted To Assess The Equivalent Von Mises Stresses Induced In Endodontically Treated Anterior Teeth Restored Using Hybrid Ceramic Or Resin Nano-ceramic Endocrowns With A Novel Design.

Materials and Methods: Two 3D Finite Element Models Of Endodontically Treated Maxillary Central Incisors Restored With Hybrid Ceramic Endocrown [Vita ENAMIC] With The Novel Design (Model I) And Resin-nano Ceramic [Lava Ultimate] Endocrown With The Novel Design (Model II) Were Constructed. Using Sophisticated Finite Element Analysis Software, The Equivalent Von Mises Stresses Were Assessed.

Results: The Highest Stresses Were Seen At The Area Of Load Application In Both Models. High Stresses Were Also Seen At The Cemento-enamel Junction (CEJ), The Upper Edge Of The Acrylic Resin Base And The Cement Layer. The Highest Stress Values Within The Tooth Structure Was In Model II.

Conclusions: In Terms Of Von Mises Stresses, Vita ENAMIC Endocrown Was Preferable Over Lava Ultimate Endocrown.