Submit to Materials Review for Materials Propose a Special Issue

Journal Browser

► Journal Browser

New Frontiers in the Field of Materials and Technologies in Orthodontics

Print Special Issue Flyer
Special Issue Editors
Special Issue Information
Keywords
Published Papers

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

Deadline for manuscript submissions: closed (20 October 2022) | Viewed by 11730

Share This Special Issue

Special Issue Editor

Prof. Dr. Marco Portelli

E-Mail Website
Guest Editor

Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Section of Orthodontics, University of Messina, University Hospital “G. Martino”, 98123 Messina, Italy
Interests: orthodontics; oral pathology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of digital technologies and the continuous research in the field of materials has completely changed biomedical scientific research. Dentistry in general, and orthodontics in particular, has undergone significant changes since the introduction of new technologies and materials. The development of CBCT (cone beam computed tomography) technology has extraordinarily implemented diagnostic and treatment planning capabilities, especially in cases of complex skeletal malocclusions, temporary anchorage device (TAD) insertion, etc. The use of software systems for computer-aided design (CAD) and computer-aided manufacturing (CAM) has completely revolutionized the design, manufacture, and application of orthodontic devices. Digital technologies have also significantly improved communication between clinician and patients, and optimized the effectiveness and efficiency of orthodontic therapy in general.

The continuous research in the field of materials has allowed for a significant improvement in orthodontic devices’ clinical efficiency, and moreover, has made it possible to increasingly satisfy the aesthetic requests of orthodontic patients. For this Special Issue, our goal is to provide original contributions that describe or validate the most innovative diagnostic and therapeutic technologies, as well as the advantages offered through the use of new materials in orthodontics. In order to achieve this goal, clinicians, researchers, and experts in various fields of orthodontics are invited to submit original papers or reviews of scientific literature to this emergent issue.

Prof. Dr. Marco Portelli
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. 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

CBCT (cone beam computed tomography)
computer-aided design (CAD)
computer-aided manufacturing (CAM)
digital impression
indirect bonding
Ni–Ti alloys
polymers
customized orthodontic appliances
aesthetic orthodontic devices
orthodontic aligners

Published Papers (3 papers)

Download All Papers

Research

Jump to: Review

12 pages, 2855 KiB

Open AccessArticle

Effect of Fluoride Content of Mouthwashes on Superelastic Properties of NiTi Orthodontic Archwires

by Francisco Pastor, Juan Carlos Rodríguez, José María Barrera, José Angel Delgado García-Menocal, Aritza Brizuela, Andreu Puigdollers, Eduardo Espinar and Javier Gil

Materials 2022, 15(19), 6592; https://doi.org/10.3390/ma15196592 - 22 Sep 2022

Cited by 4 | Viewed by 1428

Abstract

The influence of sodium fluoride (NaF) concentration in mouthwashes on the properties of superelastic NiTi orthodontic wires has been studied. In this work, 55.8%Ni and 44.2%Ti (in weight) wires were introduced in commercial mouthwashes with different NaF contents (0, 130, 200 and 380 ppm). The release of Ni²⁺ and Ti⁴⁺ ions was by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) at 1, 4, 7 and 14 days. Superelastic orthodontic wires present at oral temperature the austenitic phase which is transformed into a plastic phase (martensite) by cooling. The temperatures at which this occurs are influenced by the chemical composition. The release of ions from the wire will produce variations in the temperatures and stresses of the stress-induced martensitic transformation. M_s, M_f, A_s, A_f were determined by Differential Scanning Calorimeter (DSC). The transformation stresses (austenite to stress induce martensite) were determined with a servo-hydraulic testing machine at 37 °C. The surfaces for the different times and mouthwash were observed by Scanning Electron Microscope (SEM). The release of Ni²⁺ in mouthwashes with 380 ppm NaF concentrations reaches 230,000 ppb in 14 days and for Ti⁴⁺ 175,000 ppb. When NaF concentrations are lower than 200 ppm the release of Ni and Ti ions is around 1500 ppb after 14 days. This variation in compositions leads to variations in M_s from 27 °C to 43.5 °C in the case of higher NaF concentration. The increasing immersion time and NaF concentrations produce a decrease of Ni in the wires, increasing M_s which exceed 37 °C with the loss of superelasticity. In the same way, the stresses (tooth position corrective) decrease from 270 MPa to 0 MPa due to the martensitic phase. The degradation can produce the growth of precipitates rich in Ti (Ti₂Ni). These results are of great interest in the orthodontic clinic in order to avoid the loss of the therapeutic properties of superelastic NiTi due to long immersion in fluoride mouthwashes. Full article

(This article belongs to the Special Issue New Frontiers in the Field of Materials and Technologies in Orthodontics)

► Show Figures

Figure 1

10 pages, 603 KiB

Open AccessArticle

Evaluation of Tooth Movement Accuracy with Aligners: A Prospective Study

by Vincenzo D’Antò, Rosaria Bucci, Vincenzo De Simone, Luis Huanca Ghislanzoni, Ambrosina Michelotti and Roberto Rongo

Materials 2022, 15(7), 2646; https://doi.org/10.3390/ma15072646 - 04 Apr 2022

Cited by 20 | Viewed by 2762

Abstract

Background. Clear aligners treatment (CAT) is a common solution in orthodontics to treat both simple and complex malocclusions. This study aimed to evaluate the predictability of CAT, comparing the virtually planned and the achieved tooth movement at the end of stage 15, which is often the time of first refinement. Methods. Seventeen patients (mean age: 28.3 years) were enrolled in the study. Torque, tip and rotation were analyzed in 238 maxillary teeth on digital models at Pre-treatment (T0), at the end of stage 15 (T15) and at virtually planned stage 15 (T15i). Prescription, Achieved movement and performance values were calculated to compare the virtually planned and the clinical tooth position. Data were analyzed by means of Student’s t test with a level of significance set at p < 0.05. Results. The largest iper-performance was the torque correction of the second molars (+2.3° ± 3.1°), the greatest under-performance was the tip correction of the first molars (−2.3° ± 3.3°), while rotation corrections of all the teeth showed more accurate performance. No significant differences were found between mean Prescription and mean Achieved movement for all the assessed movements (p < 0.05). Conclusions. An accurate evaluation of CAT after the 15th aligner is fundamental in order to individuate the movements that are not matching the digital set-up. Full article

(This article belongs to the Special Issue New Frontiers in the Field of Materials and Technologies in Orthodontics)

► Show Figures

Figure 1

Review

Jump to: Research

17 pages, 1690 KiB

Open AccessReview

Effects of Composite Attachments on Orthodontic Clear Aligners Therapy: A Systematic Review

by Riccardo Nucera, Carolina Dolci, Angela Mirea Bellocchio, Stefania Costa, Serena Barbera, Lorenzo Rustico, Marco Farronato, Angela Militi and Marco Portelli

Materials 2022, 15(2), 533; https://doi.org/10.3390/ma15020533 - 11 Jan 2022

Cited by 38 | Viewed by 6917

Abstract

This systematic review aims to highlight the differences between different clear aligner therapies that differ in the presence of attachments or in attachment configuration. Eight electronic databases were searched up to March 2020. Two authors independently proceeded to study selection, data extraction, and risk of bias assessment. The analysis of the results was carried out examining six groups of movements (mesio-distal tipping/bodily movement; anterior bucco-lingual tipping/root torque; posterior bucco-lingual tipping/expansion; intrusion; extrusion; rotation). Five clinical trials were selected and all of them showed a medium risk of bias. Literature showed that attachments mostly increase the effectiveness of orthodontic treatment with clear aligners, improving anterior root torque, rotation, and mesio-distal (M-D) movement; they are also important to increase posterior anchorage. However, some articles showed contradictory or not statistically significant results. Attachments also seem to improve intrusion, but the evidence about this movement, as well as extrusion, is lacking. No studies evaluated posterior bucco-lingual tipping/expansion. Further clinical trials are strongly suggested to clarify the influence of attachments and their number, size, shape, and position on each orthodontic movement. Full article

(This article belongs to the Special Issue New Frontiers in the Field of Materials and Technologies in Orthodontics)

► Show Figures