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Metals
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Titanium in Medical and Dental Applications
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Titanium in Medical and Dental Applications

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (20 March 2020) | Viewed by 5616

Special Issue Editor

Prof. Dr. Irina P. Semenova

E-Mail Website
Guest Editor
Institute of Physics of Advanced Materials, Ufa State Aviation University, Ufa 450000, Russia
Interests: metallic materials (nanostructured, ultra-fine grained); titanium alloys; severe plastic deformation; phase transformations; mechanical properties (including fatigue, fracture toughness, creep strength); microstructure- properties correlations; surface modification (including ion implantation, vacuum-plasma treatments)

Special Issue Information

Dear Colleagues,

This Issue presents papers that summarize the advantages provided by titanium and its alloys in medical and dental applications. The following aspects are considered:

  • Advanced fabrication techniques; thermomechanical processing, including methods of severe plastic deformation (SPD) to improve mechanical properties;
  • The relationship between the microstructure, mechanical, and functional properties of Ti and its alloys;
  • The characterization of the physical, chemical, and mechanical properties of titanium and its alloys that are crucial for their medical applications;
  • Research and development of surface modification techniques, including bio-functional coatings;
  • An examination of the functional and in-vitro biological properties of titanium implants.

Prof. Dr. Irina P. Semenova
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Ti
  • Ti alloys
  • Processing
  • Microstructure
  • Strength
  • Fatigue
  • Surface modification
  • Coatings
  • Bio-functional properties
  • Implants

Published Papers (2 papers)

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Research

12 pages, 3399 KiB  
Article
Shaping Ability, Cyclic Fatigue Resistance and Fractographic Analysis of Hybrid and Reciprocating Nickel Titanium Endodontic Instruments
by Saulius Drukteinis, Vytaute Peciuliene, Ruta Bendinskaite, Vilma Brukiene, Rasmute Maneliene and Egle Nedzinskiene
Metals 2020, 10(2), 172; https://doi.org/10.3390/met10020172 - 24 Jan 2020
Cited by 5 | Viewed by 2268
Abstract
The aim of this study was to investigate the shaping ability and cyclic fatigue resistance of Genius (GN) and WaveOne (WO) nickel-titanium (NiTi) instruments. Forty mesial root canals of mandibular molars were randomly divided into two groups, according to the instrument system used [...] Read more.
The aim of this study was to investigate the shaping ability and cyclic fatigue resistance of Genius (GN) and WaveOne (WO) nickel-titanium (NiTi) instruments. Forty mesial root canals of mandibular molars were randomly divided into two groups, according to the instrument system used for root canal preparation (n = 20): GN and WO. Root canals were prepared to the full working length using the crown-down technique, with up to 40.04 instruments for GN group and 40.08 instruments for WO group. Specimens were scanned with a µCT before and after instrumentation. The changes in 3D parameters and degree of canal transportation were evaluated in the apical, middle and coronal thirds of root canals. Size 25, taper 0.04 (GN) and 0.08 (WO) instruments (n = 20) were used in simulated root canals until fracturing, and the number of cycles to failure (NCF) was recorded. The fractured files were investigated under a scanning electron microscope to characterize fractured surfaces. Data were analyzed using ANOVA post hoc Tuckey’s tests with the significance level set at 5%. The GN system was able to prepare the higher percentage of the canal surface with less canal transportation in all root canal thirds and displayed the higher resistance to cyclic fatigue in comparison to WO instruments (p < 0.05). However, the length of the fractured segments was not significantly different among the groups; meanwhile, SEM investigations revealed the typical topographic characteristics of fractured surfaces. Hybrid GN instruments demonstrated superior shaping ability and resistance to cyclic fatigue. However, both NiTi instrument systems prepared the root canals with no significant shaping errors, considerable changes in 3D parameters and no significant differences in the topographic appearances of the instrument surfaces after fractures. Full article
(This article belongs to the Special Issue Titanium in Medical and Dental Applications)
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9 pages, 3483 KiB  
Article
A Finite Element Analysis of the Fatigue Behavior and Risk of Failure of Immediate Provisional Implants
by María Prados-Privado, Carlos Ivorra, Carlos Martínez-Martínez, Sergio Alexandre Gehrke, José Luis Calvo-Guirado and Juan Carlos Prados-Frutos
Metals 2019, 9(5), 535; https://doi.org/10.3390/met9050535 - 8 May 2019
Cited by 5 | Viewed by 2930
Abstract
Background: Temporary dental implants are used to support provisional prostheses. The goal of this study was to obtain the stress–number (S–N) curves of cycles of five temporary dental implants employing finite element methods. Additionally, a probabilistic analysis was carried out to obtain the [...] Read more.
Background: Temporary dental implants are used to support provisional prostheses. The goal of this study was to obtain the stress–number (S–N) curves of cycles of five temporary dental implants employing finite element methods. Additionally, a probabilistic analysis was carried out to obtain the failure probability of each dental implant. Methods: To obtain these curves, first the maximum value of the fracture load was obtained by simulation of a compression test. Subsequently, the fatigue life was simulated by varying each of the loads from the maximum value to a minimum value (10% of the maximum value), and the minimum number of cycles that it should support was calculated. Results: The fatigue limit of titanium in these implants was around 200 MPa with the maximum number of cycles between 64,976 and 256,830. The maximum compression load was between 100 and 80 N. Regarding the probability of failure, all implants were expected to behave similarly. Conclusions: This study of finite elements provided the values of maximum load supported by each of the implants, and the relationship between the stress in the implant and the number of cycles that it could support with a probability of failure. An international standard on how to perform fatigue studies in temporary dental implants was deemed necessary. Full article
(This article belongs to the Special Issue Titanium in Medical and Dental Applications)
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