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Applied Sciences
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Advanced Biotechnology Applied to Orthodontic TSADs and CBCT
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Advanced Biotechnology Applied to Orthodontic TSADs and CBCT

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Dentistry and Oral Sciences".

Deadline for manuscript submissions: closed (20 March 2024) | Viewed by 2046

Special Issue Editor

Prof. Dr. Jong-Moon Chae

E-Mail Website
Guest Editor
Department of Orthodontics, School of Dentistry, University of Wonkwang, Iksan 54538, Republic of Korea
Interests: extra-alveolar and intra-alveolar TSADs; three-dimensional tooth movement; transverse expansion; CBCT; three-dimensional diagnosis and analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue aims to enumerate the advanced biotechnology applied to various orthodontic temporary skeletal anchorage devices (TSADs) and cone-beam computed tomography (CBCT). With their advent, the range of orthodontic diagnosis and camouflage treatments expanded through the selective application of TSADs and CBCT to obtain the essential mechanics and evidence allowing the achievement of acceptable treatment results. Nowadays, TSADs and CBCT are no longer new within the orthodontic field, but are essentially involved and designed in the orthodontic diagnosis and treatment planning processes to achieve a more effective tooth movement and better treatment results. Therefore, in this Special Issue, we seek several authors to contribute articles demonstrating the broad applications of various TSADs and CBCT.

Prof. Dr. Jong-Moon Chae
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. Applied Sciences 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 2400 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

  • extra-alveolar and intra-alveolar TSADs
  • 3-dimensional tooth movement
  • transverse expansion
  • CBCT
  • 3-dimensional diagnosis and analysis

Published Papers (3 papers)

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Research

12 pages, 1458 KiB  
Article
Relationship between Preoperative Maxillomandibular Transverse Discrepancy and Post-Surgical Stability in Class II Malocclusion
by Chae-kyung Lee, Kyung-Ho Kim, Kee-Joon Lee, Jung-Yul Cha, Sang-Sun Han and Hyung-Seog Yu
Appl. Sci. 2024, 14(9), 3866; https://doi.org/10.3390/app14093866 - 30 Apr 2024
Viewed by 334
Abstract
The aim of this study was to examine the relationship between the presurgical maxillomandibular transverse index and post-surgical stability one year after mandibular advancement. For the material and methods, twenty-two subjects who were treated with mandibular advancement were enrolled in this study. Postsurgical [...] Read more.
The aim of this study was to examine the relationship between the presurgical maxillomandibular transverse index and post-surgical stability one year after mandibular advancement. For the material and methods, twenty-two subjects who were treated with mandibular advancement were enrolled in this study. Postsurgical stability was defined as the horizontal mandibular position change of <2 mm in lateral cephalogram 1 year after surgery. Subjects were divided into two groups according to the maintenance of postsurgical stability: a stable group (group S) and a less stable group (group LS). Presurgical maxillomandibular transverse index was determined as Yonsei transverse index (YTI) one month before surgery. A logistic analysis was performed on the postsurgical stability according to the YTI value. The presurgical, post-expansion target YTI value was obtained using receiver operating characteristic (ROC) curve. There were no notable differences in the baseline characteristics of the two groups except for vertical positions of point A, B, and gender distribution. Before surgery, however, there was a significant difference in YTI at both the fossa and CR level between the groups. The amount of mandibular advancement did not show a significant difference. The odds ratio for YTI was 0.35 (p = 0.024). The prediction of stability of presurgical YTI yielded an area under the ROC curve of 0.88. The cut-off value for YTI was 1.45 mm. It can thus be concluded that presurgical transverse index showed a correlation with postsurgical stability, and correcting it in the presurgical phase to a certain level appears to aid in securing postsurgical stability. Full article
(This article belongs to the Special Issue Advanced Biotechnology Applied to Orthodontic TSADs and CBCT)
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19 pages, 9735 KiB  
Article
Biomechanical Effects of Different Auxiliary–Aligner Designs on the Rotation of an Upper Canine: A Finite Element Analysis of a Specific Patient
by Vincenzo D’Antò, Tecla Bocchino, Carmine Levatè, Raffaele Buono, Armando Razionale, Sandro Barone and Roberto Savignano
Appl. Sci. 2024, 14(6), 2308; https://doi.org/10.3390/app14062308 - 9 Mar 2024
Viewed by 653
Abstract
Aim: The objective of this research has been to apply a specific simulation to a patient to assess the biomechanical consequences of rotating an upper canine tooth through different attachment–aligner configurations and to predict the most efficient design using a three-dimensional finite element [...] Read more.
Aim: The objective of this research has been to apply a specific simulation to a patient to assess the biomechanical consequences of rotating an upper canine tooth through different attachment–aligner configurations and to predict the most efficient design using a three-dimensional finite element model of a full maxillary arch of a specific patient. Materials and methods: This was obtained by combining Cone-Beam Computed Tomography (CBCT) with the aim of reconstructing tooth roots and bone tissues, and Surface Structured-Light Scanning for creating digital tooth crown models from the patient’s impressions. This model was imported into the finite element solver (Ansys® 17). Three different attachment–aligner combinations were created through the exploitation of computer-aided design (CAD) procedures, i.e., without attachments, with a couple of attachments and with an attachment and a pressure point. For each simulation, the resulting force–moment (MF) system applied by the aligner to the target tooth, as well as the tooth displacement and rotation, was computed using a workstation based on Intel Xeon CPU E3-1245 v3@3.40 GHz and 16 GB RAM. Simulations reported that by adding the pressure point and the attachment to the standard aligner the amount of Moment z (Mz) delivered to the tooth increased almost two times. Results and conclusions: The maximum tooth displacement (0.85 mm) was obtained with the attachment and pressure point aligner, while the lowest (0.058 mm) was obtained with use of a couple of attachments. Both the attachment and the pressure point have the potential to enhance the appliance’s effectiveness. Particularly, the pressure point showed a higher influence on the load absolute value. The method applied in the present study should be used to retrieve the best design configuration for each patient and specific tooth movement. Full article
(This article belongs to the Special Issue Advanced Biotechnology Applied to Orthodontic TSADs and CBCT)
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10 pages, 2640 KiB  
Article
The Impact of Drilling Guide Length of a Surgical Guide on Accuracy of Pre-Drilling for Miniscrew Insertion
by Ryo Hamanaka, Toshiro Emori, Mizuki Ohama, Kana Yamamoto, Yui Horiguchi and Noriaki Yoshida
Appl. Sci. 2024, 14(1), 177; https://doi.org/10.3390/app14010177 - 24 Dec 2023
Viewed by 713
Abstract
Background: Temporary anchorage devices (TADs) are broadly used in orthodontic treatment. TADs must be placed accurately to avoid collision against tooth roots. To place miniscrews with a higher accuracy, a digitally designed surgical guide was proposed in previous studies. However, to our knowledge, [...] Read more.
Background: Temporary anchorage devices (TADs) are broadly used in orthodontic treatment. TADs must be placed accurately to avoid collision against tooth roots. To place miniscrews with a higher accuracy, a digitally designed surgical guide was proposed in previous studies. However, to our knowledge, there have been no articles that have assessed the minimal required length to achieve good drilling accuracy. The objective of the present study was to evaluate the accuracy of pre-drilling using computer-aided designed surgical guides with different lengths. Methods: A typodont model was scanned, and surgical guides of 3.0, 4.5, and 6.0 mm were designed. Duplicated typodonts and the surgical guides were printed with a 3D printer. Using these models and surgical guides, pre-drillings were performed. Freehand drilling was also conducted for the control. The drilled models were scanned with micro-computed tomography to evaluate the accuracy. Results: The mean errors at the tip of the drill were 0.44 mm, 0.61 mm, 0.41 mm, and 0.24 mm for the freehand drilling, and 3.0, 4.5, and 6.0 mm for the surgical guide, respectively. Conclusion: The results suggested that a longer surgical guide was recommended to achieve good insertion accuracy for a narrow interradicular space, and that 3.0 mm was enough when an error of 1.0 mm was acceptable for the insertion site. Full article
(This article belongs to the Special Issue Advanced Biotechnology Applied to Orthodontic TSADs and CBCT)
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