Fatigue of narrow dental implants: influence of the hardening method
Author
Pérez Antoñanzas, Roman
Gargallo-Albiol, Jordi
Altuna, Pablo
Gil Mur, Francisco Javier
Publication date
2020ISSN
1996-1944
Abstract
The use of narrow titanium dental implants (NDI) for small ridges, reduced interdental space, or missing lateral incisors can be a viable option when compared to the conventional wider dental implants. Furthermore, in many cases, standard diameter implant placement may not be possible without grafting procedures, which increases the healing time, cost, and morbidity. The aim of this study was to analyze the mechanical viability of the current narrow implants and how narrow implants can be improved. Different commercially available implants (n = 150) were tested to determine maximum strength, strain to fracture, microhardness, residual stress, and fatigue obtaining the stress–number of cycles to fracture (SN) curve. Fractography was studied by scanning electron microscopy. The results showed that when the titanium was hardened by the addition of 15% of Zr or 12% cold worked, the fatigue limit was higher than the commercially pure grade 4 Ti without hardening treatment. Grade 4 titanium without hardening treatment in narrow dental implants can present fractures by fatigue. These narrow implants are subjected to high mechanical stresses and the mechanical properties of titanium do not meet the minimal requirements, which lead to frequent fractures. New hardening treatments allow for the mechanical limitations of conventional narrow implants to be overcome in dynamic conditions. These hardening treatments allow for the design of narrow dental implants with enhanced fatigue life and long-term behavior.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
616.3 - Pathology of the digestive system. Complaints of the alimentary canal
Keywords
Implants dentals
Implants dentals estrets
Propietats mecàniques
Fatiga
Aliatge de titani
Aliatge Ti – Zr
Enduriment
Fractura
Duresa
Titani comercialment pur
Implantes dentales
Implantes dentales estrechos
Propiedades mecánicas
Fatiga
Aleación de titanio
Aleación Ti – Zr
Endurecimiento
Fractura
Dureza
Titanio comercialmente puro
Dental implants
Narrow dental implants
Mechanical properties
Fatigue
Titanium alloys
Ti–Zr alloy
Hardening
Fracture
Hardness
Commercially pure titanium
Pages
10
Publisher
MDPI
Collection
13;6
Is part of
Materials
Citation
Pérez, R.A.; Gargallo, J.; Altuna, P. [et al.]. Fatigue of narrow dental implants: influence of the hardening method. Materials, 2020, 13, 1429. Disponible en: <https://www.mdpi.com/1996-1944/13/6/1429>. Fecha de acceso: 4 oct. 2021. DOI: 10.3390/ma13061429
Grant agreement number
info:eu-repo/grantAgreement/ES/2PE/RTI2018-098075-B-C22
info:eu-repo/grantAgreement/MINECO/ RTI2018-098075-B-C22
This item appears in the following Collection(s)
- Odontologia [239]
Rights
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/