Lekshmy AR¹, Aswathy S Kumar¹, Pradeep C Dathan² and K Chandrasekharan Nair³

¹Postgraduate Student, Department of Prosthodontics, Sri Sankara Dental College, Akathumuri, Thiruvananthapuram, Kerala, India
²Professor and Head of the Department of Prosthodontics, Sri Sankara Dental College, Akathumuri, Thiruvananthapuram, Kerala, India
³Professor Emeritus, Department of Prosthodontics, Sri Sankara Dental College, Akathumuri, Thiruvananthapuram, Kerala, India

*Corresponding Author: K Chandrasekharan Nair, Professor Emeritus, Department of Prosthodontics, Sri Sankara Dental College, Akathumuri, Thiruvananthapuram, Kerala, India.

Received: August 09, 2023; Published: August 29, 2023

Abstract

Endodontically treated teeth with severely damaged morphology provide a challenging task for the restorative dentist. Though heavily criticised for the invasive nature, such teeth are commonly restored with post and core preparations. Posts very often induce root fracture because of the mismatch in the flexural properties of the post and dentin and because of the overzealous internal tooth preparation. Research workers continued their efforts to find out a viable alternative to posts. Endo crowns provided an alternative which is less invasive than the post. The design of extension into the pulp chamber gives adequate retention to the endo crowns. The monobloc design, introduction of efficient adhesive resins, CAD/CAM fabrication technique and hybrid ceramics have refined the endo crowns and ensured long term prognosis.

Keywords: Endo Crown; Nayyar Core; Post and Core; Extensive Coronal Destruction; Coronal Rehabilitation; Molars; Mono Block Adhesive Restoration

References

1. Fauchard P. “The surgeon dentist or treatise on the teeth, vol. 2. Translated from the 2^nd edition”. 1746 by Londsay L. London: Butterworth and Company Ltd (1946).
2. Black GV. “A method of grafting artificial crowns on roots of teeth”. The Missouri Dental Journal 1 (1869): 233-236.
3. Prothero JH. “Prosthetic dentistry”. Chicago: Medico-Dental Publishers (1921): 1153-1174.
4. Hampson EL and Clark J. “The post-retained crown”. Dental Practitioner and Dental Record 8 (1958): 130-135.
5. Morgano SM and Milot P. “Clinical success of cast metal posts and cores”. Journal of Prosthetic Dentistry 70 (1993): 11-16.
6. Morgano SM and Brackett SE. “Foundation restorations in fixed prosthodontics: Current knowledge and future needs”. Journal of Prosthetic Dentistry 82 (1999): 643-657.
7. Ikram OH., et al. “Micro-computed tomography of tooth tissue volume changes following endodontic procedures and post space preparation”. International Endodontic Journal 42 (2009): 1071-1076.
8. Ross IF. “Fracture susceptibility of endodontically treated teeth”. Journal of Endodontics 6 (1980): 560-565.
9. Arun Nayyar., et al. “An amalgam coronal-radicular dowel and core technique for endodontically treated posterior teeth”. Journal of Prosthetic Dentistry 43 (1980): 511-515.
10. N Ulusoy and L Gulec Alagoz. “Evaluation of two CAD/CAM materials for Nayyar core and post-retained restorations: Three-dimensional stress analysis”. Journal of the Mechanical Behavior of Biomedical Materials 117 (2021): 104381.
11. Pissis P. “Fabrication of a metal-free ceramic restoration utilizing the monobloc technique”. Practical Periodontics and Aesthetic Dentistry 7 (1995): 83-94.
12. Bindl A and Mörmann WH. “Clinical evaluation of adhesively placed Cerec endocrowns after 2 years–preliminary results”. The Journal of Adhesive Dentistry 1 (1991): 255-265.
13. Gaye Sevimli., et al. “Endocrowns-review”. Journal of Istanbul University Faculty of Dentistry 2 (2015): 57-63.
14. Tsai YL., et al. “Influence of glass-ceramic thickness on hertzian and bulk fracture mechanisms”. The International Journal of Prosthodontics 1 (1998): 27-32.
15. Bindl A., et al. “Survival of ceramic computer-aided design/manufacturing crowns bonded to preparations with reduced macroretention geometry”. The International Journal of Prosthodontics3 (2005): 219-224.
16. Einhorn M., et al. “Preparation Ferrule Design Effect on Endocrown Failure Resistance”. Journal of Prosthodontics 1 (2019): e237-242.
17. Konstantinos Tzimas., et al. “Endocrown restorations for extensively damaged posterior teeth: clinical performance of three cases”. Restorative Dentistry & Endodontics 4 (2018): e38.
18. Bindl A., et al. “Survival of ceramic computer-aided design/manufacturing crowns bonded to preparations with reduced macroretention geometry”. The International Journal of Prosthodontics 18 (2005): 219-224.
19. Fages M and Bennasar B. “The endocrown: a different type of all-ceramic reconstruction for molars”. Journal of the Canadian Dental Association 79 (2013): d140.
20. Shin Y., et al. “Evaluation of the marginal and internal discrepancies of CAD-CAM endocrowns with different cavity depths: an in vitro study”. Journal of Prosthetic Dentistry 117 (2017): 109-115.
21. Ma PS., et al. “Load fatigue of teeth with different ferrule lengths, restored with fiber posts, composite resin cores, and all-ceramic crowns”. Journal of Prosthetic Dentistry 102 (2009): 229-234.
22. Gianluca Plotino., et al. “Flexural properties of endodontic posts and human root dentin”. Dent Mate 9 (2007): 1129-1135.
23. Awada A and Nathanson D. “Mechanical properties of resin-ceramic CAD/ CAM restorative materials”. Journal of Prosthetic Dentistry 4 (2015): 587–593.
24. Zoidis P., et al. “Using modified polyetheretherketone (PEEK) as an alternative material for endocrown restorations: a short-term clinical report”. Journal of Prosthetic Dentistry 3 (2017): 335–339.
25. Papalexopoulos D., et al. “A Thorough Analysis of the Endocrown Restoration: A Literature Review”. The Journal of Contemporary Dental Practice 4 (2021): 422–426.
26. M Rayyan., et al. “Fracture Resistance of computer aided endo-crowns versus conventional endo-supported computer aided full crowns". International Arab Journal of Dentistry: IAJD 2 (2019): 54-59.
27. Robbins JW. “Restoration of the endodontically treated tooth”. Dental Clinics of North America 2 (2002): 367-384.
28. Dietschi D., et al. “Biomechanical considerations for the restoration of endodontically treated teeth: a systematic review of the literature, Part II (Evaluation of fatigue behavior, interfaces, and in vivo studies)”. Quintessence International 2 (2008): 117-129.
29. Zhu J., et al. “Influence of remaining tooth structure and restorative material type on stress distribution in endodontically treated maxillary premolars: a finite element analysis”. Journal of Prosthetic Dentistry 5 (2017): 646–655.
30. Govare N and Contrepois M. “Endocrowns: a systematic review”. Journal of Prosthetic Dentistry 3 (2020): 411-418e9.
31. Tribst JPM., et al. “Lithium Disilicate Ceramic Endocrown Biomechanical Response According to Different Pulp Chamber Extension Angles and Filling Materials”. Materials 14 (2021): 1307.
32. Marwa EI Elagra. “Endocrown preparation: Review”. International Journal of Applied Dental Sciences1 (2019): 253-256.

Citation

Citation: K Chandrasekharan Nair., et al. “Endo Crown-its Evolution and Overview".Acta Scientific Dental Sciences 7.9 (2023): 105-110.

Copyright

Copyright: © 2023 K Chandrasekharan Nair., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.