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New Materials and Techniques for Orthodontics
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New Materials and Techniques for Orthodontics

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Biomaterials".

Deadline for manuscript submissions: closed (10 October 2022) | Viewed by 14553

Special Issue Editors

Dr. Maria Francesca Sfondrini

E-Mail Website
Guest Editor
Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, 27100 Pavia, Italy
Interests: orthodontics; adhesive dentistry; shear; bond strength; bracket; fiber-reinforced composite; craniofacial growth
Special Issues, Collections and Topics in MDPI journals
Dr. Andrea Scribante

E-Mail Website
Guest Editor
Unit of Orthodontics and Paediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, 27100 Pavia, Italy
Interests: orthodontics; dental hygiene, adhesive dentistry; dental materials; CAD/CAM; intraoral scanner; computerized cast; shear; bond strength; bracket; fiber-reinforced composite; miniscrews; remineralization; probiotics; biomimetic materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Orthodontics deals with the correction of malformations of the maxillaries and alterations in their growth and development, in order to determine a stable occlusion. The orthodontic practice encompasses a wide range of therapies, such as interceptive treatments, fixed and mobile appliances, surgical therapies, the surgical-orthodontic treatment of included and transposed teeth, pre-prosthetic treatments, retention.

New materials and techniques that are frequently introduced in daily clinical practice need continuous study and research. Accordingly, the purpose of the present Special Issue is to collect current research about the materials used in clinical orthodontics. Possible research topics include but are not limited to: adhesives, aligners, archwires, bond strength bonding interfaces, brackets, CAD/CAM, caries prevention, composites, digital impressions, digital workflow, elastodontics, fiber-reinforced composites, fixed appliances, lingual appliances, miniscrews, multi-disciplinary treatment, oral microbiology, retention, and skeletal anchorage. Additionally, materials that could influence behavioral science or patients' compliance and radiography techniques may also be taken into consideration.

Analyses of the chemical, physical and mechanical characteristics of orthodontic materials, along with basic and translational research studies, mechanical analyses, clinical trials and reviews will be considered for publication.

Before submission, authors are encouraged to carefully read over the journal's “Author Guidelines”.

Prof. Maria Francesca Sfondrini
Prof. Dr. Andrea Scribante
Guest Editors

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. Materials is an international peer-reviewed open access semimonthly 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

  • adhesives
  • aligners
  • archwires
  • behavioral science
  • bond strength
  • bonding interfaces
  • brackets
  • CAD/CAM
  • caries prevention
  • composites
  • digital impressions
  • digital workflow
  • elastodontics
  • fiber-reinforced composites
  • fixed appliances
  • lingual appliances
  • miniscrews
  • multi-disciplinary treatment
  • oral microbiology
  • orthodontics
  • patient compliance
  • radiography
  • retention
  • skeletal anchorage

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Published Papers (4 papers)

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Editorial

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3 pages, 195 KiB  
Editorial
New Materials and Techniques for Orthodontics
by Maria Francesca Sfondrini and Andrea Scribante
Materials 2023, 16(5), 1924; https://doi.org/10.3390/ma16051924 - 25 Feb 2023
Cited by 1 | Viewed by 1426
Abstract
Orthodontics is a specialty of dentistry dealing with the prevention, diagnosis, and treatment of mispositioned jaws and teeth [...] Full article
(This article belongs to the Special Issue New Materials and Techniques for Orthodontics)

Research

Jump to: Editorial

13 pages, 2722 KiB  
Article
Bacteriostatic Poly Ethylene Glycol Plasma Coatings for Orthodontic Titanium Mini-Implants
by Juan Carlos Rodriguez-Fernandez, Francisco Pastor, Jose Maria Barrera Mora, Aritza Brizuela, Andreu Puigdollers, Eduardo Espinar and F. Javier Gil
Materials 2022, 15(21), 7487; https://doi.org/10.3390/ma15217487 - 25 Oct 2022
Cited by 5 | Viewed by 2876
Abstract
Titanium mini-implants are used as anchorage for orthodontic tooth movements. However, these implants present problems due to the infection of surrounding tissues. The aim of this work was to obtain a polyethylene glycol (PEG) layer by plasma in order to achieve a bacteriostatic [...] Read more.
Titanium mini-implants are used as anchorage for orthodontic tooth movements. However, these implants present problems due to the infection of surrounding tissues. The aim of this work was to obtain a polyethylene glycol (PEG) layer by plasma in order to achieve a bacteriostatic surface. Titanium surfaces were activated by argon plasma and, after, by PEG plasma with different powers (100, 150 and 200 W) for 30 and 60 min. The roughness was determined by white light interferometer microscopy and the wettability was determined by the contact angle technique. Surface chemical compositions were characterized by X-ray photoelectron spectroscopy (XPS) and cytocompatibility and cell adhesion studies were performed with fibroblast (hFFs) and osteoblast (SAOS-2) cells. Bacterial cultures with Spectrococcus Sanguinis and Lactobacillus Salivarius were performed, and bacterial colonization was determined. The results showed that plasma treatments do not affect the roughness. Plasma makes the surfaces more hydrophilic by decreasing the contact angles from 64.2° for titanium to 5.2° for argon-activated titanium, with values ranging from 12° to 25° for the different PEG treatments. The plasma has two effects: the cleaning of the surface and the formation of the PEG layer. The biocompatibility results were, for all cases, higher than 80%. The polymerization treatment with PEG reduced the adhesion of hFFs from 7000 to 6000 and, for SAOS-2, from 14,000 to 6500, for pure titanium and those treated with PEG, respectively. Bacterial adhesion was also reduced from 600 to 300 CFU/mm2 for Spetrococcuns Sanguinis and from 10,000 to 900 CFU/mm2 for Lactobacillus Salivarius. The best bacteriostatic treatment corresponded to PEG at 100 W and 30 s. As a consequence, the PEG coating would significantly prevent the formation of bacterial biofilm on the surface of titanium mini-implants. Full article
(This article belongs to the Special Issue New Materials and Techniques for Orthodontics)
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27 pages, 47201 KiB  
Article
Utilization of a 3D Printed Orthodontic Distalizer for Tooth-Borne Hybrid Treatment in Class II Unilateral Malocclusions
by Andrej Thurzo, Wanda Urbanová, Bohuslav Novák, Iveta Waczulíková and Ivan Varga
Materials 2022, 15(5), 1740; https://doi.org/10.3390/ma15051740 - 25 Feb 2022
Cited by 24 | Viewed by 5112
Abstract
This paper introduces a novel method of 3D designing and 3D printing of a hybrid orthodontic tooth-borne personalized distalizer for treatment of unilateral Class II malocclusion. Research objectives were to clinically utilize 3D printed distalizers, appraise feasibility of this technique and compare two [...] Read more.
This paper introduces a novel method of 3D designing and 3D printing of a hybrid orthodontic tooth-borne personalized distalizer for treatment of unilateral Class II malocclusion. Research objectives were to clinically utilize 3D printed distalizers, appraise feasibility of this technique and compare two different biocompatible photopolymers (white and transparent). Frequency of distalizers’ debonding and patients’ aesthetical perception was evaluated on the set of 12 complete orthodontic treatments. The mean duration of treatment period with a bonded distalizer was 6.4 months. All cases were adults with unilateral Class II malocclusion managed with a hybrid approach as a part of Invisalign® comprehensive treatment. Results showed that such perspective practice is feasible for 3D design and in-office 3D printing of a personalized distalizer. Results also showed no clinically significant differences between both studied biopolymers. The paper discusses an evaluation of such personalized distalizer functionality with regard to the current state of the art and compares to conventional prefabricated alternatives like a Carriere® Distalizer™ appliance. Research showed a preference of patients towards transparent biocompatible photopolymer instead of the white A2 shade. The paper concludes that additive manufacturing from dental resins is a viable method in personalization and in-office 3D printing of orthodontic auxiliaries, particularly distalizers. New materials for orthodontic 3D printing endow enhanced individualization, thus more efficient treatment. Full article
(This article belongs to the Special Issue New Materials and Techniques for Orthodontics)
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9 pages, 2204 KiB  
Article
Tooth Movement Efficacy of Retraction Spring Made of a New Low Elastic Modulus Material, Gum Metal, Evaluated by the Finite Element Method
by Naohiko Tamaya, Jun Kawamura and Yoshinobu Yanagi
Materials 2021, 14(11), 2934; https://doi.org/10.3390/ma14112934 - 29 May 2021
Cited by 5 | Viewed by 3615
Abstract
The aim of this study was to evaluate the tooth movement efficacy of retraction springs made of a new β-titanium alloy, “gum metal”, which has a low Young’s modulus and nonlinear super elasticity. Using double loop springs incorporated into an archwire made of [...] Read more.
The aim of this study was to evaluate the tooth movement efficacy of retraction springs made of a new β-titanium alloy, “gum metal”, which has a low Young’s modulus and nonlinear super elasticity. Using double loop springs incorporated into an archwire made of gum metal (GUM) and titanium molybdenum alloy (TMA), the maxillary anterior teeth were moved distally to close an extraction space. The long-term movements were simulated by the finite element method. Its procedure was constructed of two steps, with the first step being the calculation of the initial tooth movement produced by elastic deformation of the periodontal ligament, and in the second step, the alveolar socket was moved by the initial tooth movement. By repeating these steps, the tooth moved by accumulating the initial tooth movement. The number of repeating calculations was equivalent to an elapsed time. In the GUM and TMA springs, the anterior teeth firstly tipped lingually, and then became upright. As a result of these movements, the canine could move bodily. The amount of space closure in GUM spring was 1.5 times that in TMA spring. The initial tipping angle of the canine in the GUM spring was larger than that in the TMA spring. The number of repeating calculations required for the bodily movement in the GUM spring was about two times that in the TMA spring. It was predicted that the speed of space closure in the GUM spring was smaller than that in the TMA spring. Full article
(This article belongs to the Special Issue New Materials and Techniques for Orthodontics)
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