Research Article
Volume 20 Issue 11 - 2021
Influence of Ferrule Height on Stress Distribution and Deformations of Central Incisor Under Different Loads (Finite Element Study)
Salah A Yousief1,2*, Rami M Galal3,4, Ali Mohammad Eidan Alzahrani5, Mohammed Abdullah Basunduwah5, Naif Alharthi5, Rawan Hassan Basyuni5, Bashayir Ghazi Abid Althagafi5, Abrar Ahmed Almrwani5, Mona Aqely5, Rana Hamed Althubiani5, Maryam Jawad H Alameer5, Jumana Talal Althawadi5, Tawah Ali Abdullah Al Belad6, Huda Naji Alibrahim6 and Zainab Naji Alibrahim6
1Assistant Professor in the Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia
2Crown and Bridge Department, Faculty of Oral and Dental Medicine, Al Azhar University, Assuit Branch, Egypt
3Associate Professor, Department of Fixed and Removable Prosthodontics, National Research Centre, Saudi Arabia
4Assistant Professor, Fixed Prosthodontics Department, AlNahda University (NUB), Beni Suef, Egypt
5General Dentist, Saudi Arabia
6Genral Dentist -KSA
*Corresponding Author: Salah A Yousief, Assistant Professor in the Department of Restorative Dental Sciences, Al-Farabi Colleges for Dentistry and Nursing, Saudi Arabia and Crown and Bridge Department, Faculty of Oral and Dental Medicine, Al Azhar University, Assuit Branch, Egypt.
Received: October 04, 2021; Published: October 28, 2021


Aim: Estimating ferrule length effect on central incisor stresses and deformations under different load cases.

Materials and Methods: Three finite element models were developed to simulate endodontically treated central incisor with three ferrule lengths (1, 2, 3 mm) in combination with (IPS E-max Press) crown and glass fiber post. Laser scanning and CAD modeling were used to create geometry. ANSYS was used for meshing and analysis of models under three occlusal patterns (edge-to-edge occlusion, normal occlusion, and deep bite).

Results: Models results were within physiological limits, no failure were expected. Minor differences were in deformations and stresses distributions with changing ferrule length under the same loading conditions.

Conclusion: Increasing ferrule length improved the performance under load and reduced deformations and stresses on all parts.

Keywords: Central Incisor; Finite Element; Ferrule Length; Stress Distribution; Deformations


  1. Kar S., et al. “Effect of Different Ferrule Length on Fracture Resistance of Endodontically Treated Teeth: An In vitro Study”. Journal of Clinical and Diagnostic Research 4 (2017): ZC49-ZC52.
  2. Shaikh SY., et al. “Stress distribution on root dentin analogous to natural teeth with various retentive channels design on the face of the root with minimal or no coronal tooth structure: A finite element analysis”. Contemporary Clinical Dentistry 9 (2018): 630-636.
  3. Sorensen JA and Engelman MJ. “Ferrule design and fracture resistance of endodontically treated teeth”. Journal of Prosthetic Dentistry 63 (1990): 529‑5
  4. Aykent F., et al. “Effect of dentin bonding and ferrule preparation on the fracture strength of crowned teeth restored with dowels and amalgam cores”. Journal of Prosthetic Dentistry 95 (2006): 297‑
  5. Huysmans MC., et al. “Finite element analysis of qassiststic and fatigue of post and cores”. Journal of Dentistry 21 (1993): 57‑
  6. Kaur A., et al. “A comparative study of intra canal stress pattern in endodontically treated teeth with average sized canal diameter and reinforced wide canals with three different post systems using finite element analysis”. Journal of Conservative Dentistry 13 (2010): 28‑
  7. Bijelic J., et al. “Short fiber reinforced composite in restoring severely damaged incisors”. Acta Odontologica Scandinavica 71 (2013): 1221‑12
  8. Spazzin AO., et al. “Influence of post and resin cement on stress distribution of maxillary central incisors restored with direct resin composite”. Operative Dentistry 34 (2009): 223‑22
  9. Andréa Dolores Correia Miranda Valdivia., et al. “Biomechanical effect of ferrule on incisors restored with a fiberglass post and lithium-disilicate ceramic crown after thermal cycling and fatigue loading”. The Journal of Adhesive Dentistry 20 (2018): 133-142.
  10. P Magne PC., et al. “Ferrule-Effect Dominates Over Use of a Fiber Post When Restoring Endodontically Treated Incisors: An In Vitro Study”. Operative Dentistry 42-4 (2017): 396-406.
  11. O Kayabasi. “Effects of post material and cement on stress distribution by using finite element analysis and in vitro fracture test”. Journal of Engineering Research and Applied Science Volume1 (2018): 799-810.
  12. Wenjia Xie., et al. “Effect of ferrule thickness on fracture resistance of endodontically treated incisors restored with fiber post and metal crown”. The International Journal of Prosthodontics 33 (2020): 321-327.
  13. Juloski J., et al. “Four-year survival of endodontically treated premolars restored with fiber Posts”. Journal of Dental Research 93 (2014): S52-58.
  14. Esra Kul., et al. “A comparison of the fracture resistance of premolars without a ferrule with different post systems”. The Journal of Prosthetic Dentistry, Volume3 (2020): 523 e1-523.e5.
  15. Pietro Ausiello., et al. “Mechanical behavior of endodontically restored canine teeth: Effects of ferrule, post material and shape”. Dental Materials (2017).
  16. Soares PV., et al. “Influence of restorative technique on the biomechanical behavior of endodontically treated maxillary premolars. Part I: fracture resistance and fracture mode”. Journal of Prosthetic Dentistry 99 (2008): 30-37.
  17. Al Qahtani WMS and El-Anwar MI. “Advanced computational methods in Biomechanics. O. A”. Open Access Macedonian Journal of Medical Sciences (OAMJMS)4 (2018): 742-746.
  18. Zaazou M., et al. “The effect of post materials on stress distribution on endodontically treated lower first premolar: finite element analysis study”. Australian Journal of Basic and Applied Sciences12 (2012): 492-498.
  19. Abou El Yazeed M., et al. “Three dimensional finite element analysis of a traumatized avulsed maxillary permanent central incisor in children”. Current Science International1 (2015): 19-26.
  20. Sabit AM., et al. “An in-vitro study of crowned endodontically treated immature permanent central incisor reinforced with different types of aesthetic posts using FEA”. IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)8 (2017): 82-87.
Citation: Salah A Yousief., et al. “Influence of Ferrule Height on Stress Distribution and Deformations of Central Incisor Under Different Loads (Finite Element Study)”. EC Dental Science 20.11 (2021): 95-102.

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