ISSN (print) 2514-7552
ISSN (online) 2514-7560

Journal of Aligner Orthodontics

Issue cycle: Quarterly
Language: English

Category: Orthodontics

Editor-in-chief: Dr. Werner Schupp
Editor: Dr. Tommaso Castroflorio, Dr. Francesco Garino, Dr. Julia Haubrich, Dr. Beatriz Solano Mendoza, Prof. James Mah DMSc
Coordinating editor: Elizabeth Ducker
QP Deutschland

Official journal of:
European Aligner Society Ltd
The Argentine Society of Aligner Orthodontics
The French Society of Aligners Orthodontics (SFOPA)
Deutsche Gesellschaft für Aligner Orthodontie e.V. (DGAO)
Japan Academy of Aligner Orthodontics (JAAO)
Österreichische Gesellschaft für Aligner Orthodontie (ÖGAO)
Polish Aligner Academy (PAA)
Schweizerische Gesellschaft für Aligner Orthodontie (SGAO)
Taiwan Association of Aligner Orthodontists

Manuscriptmanager JAO

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The Journal of Aligner Orthodontics publishes clinically relevant articles in the field of Aligner Orthodontics. The journal is peer reviewed and claims to be the reference journal for Aligner Orthodontics, showing the whole potential of the field. The journal aims to provide in-depth knowledge to orthodontists and people interested in orthodontics, from beginners to the most advanced practitioners. Articles deal with basic procedures, case reports about special situations, multidisciplinary treatment including aligner procedures, and original studies (clinical studies, studies on materials and devices, literature reviews). Auxiliary procedures such as scanning and 3D printing are also covered. In addition, the journal contains editorials, expert discussions, tips and tricks, learning from mistakes, summaries of publications from other journals, book reviews, and news from the industry.

Subscribers receive free online access to the journal and can easily search our archives for articles dating back to 2018.
Subscribers receive free access to journal content via the Journal app.

Editor-in-chief

Dr. Werner Schupp

Germany, Adenau

Dr. Schupp graduated in dentistry in 1985 from the University of Münster and continued his studies here as a postgraduate student of orthodontics under the direction of Prof. Dr. U Ehmer. Collaboration in the orthodontic private practice of Dr. DE Toll followed and since 1990, he has been in private practice as an orthodontics specialist in Cologne, Germany. In his office, over 6000 patients have been treated with aligner orthodontics. He is certified in Manual Medicine and Osteopathy for Orthodontics. Dr. Schupp is a founding member and past president of the German Board of Orthodontics and Orofacial Orthopedics, and a board member of the German Society of Aligner Orthodontics (DGAO). He is also founder and editor-in-chief of the Journal of Aligner Orthodontics (JAO) and an advisory board member for the periodical Manuelle Medizin. He has published various articles concerning orthodontics, function, and pain therapy. He has written the books Funktionslehre in der Kieferorthopädie and Kraniomandibuläres und Muskuloskelletales System, as well as the first edition of Aligner Orthodontics, published in 2016 (Quintessence Publishing) and translated in several languages. Dr. Schupp is also visiting professor at the Capital University, Beijing, China.

Editor

Dr. Tommaso Castroflorio

Italy, Turin

Editor

Dr. Francesco Garino

Italy, Turin

Editor

Dr. Julia Haubrich

Germany, Köln

Dr. Haubrich studied dentistry at the University of Freiburg (Albert Ludwigs Universität), graduating in 2001. After working as a general dentist, she began her postgraduate studies in orthodontics in the private practice of Dr. Werner Schupp from 2003 to 2005, continuing her studies at the University of Berlin (Charité Universität) under the direction of Prof. Dr. RR Miethke. Since becoming a certified specialist of orthodontics in 2007, she has been collaborating with Dr. Werner Schupp and Dr. Julia Funke in a private practice in Cologne, Germany. She is co-author of the book Funktionslehre in der Kieferorthopädie (2012), and has published several articles concerning orthodontic aligner therapy in children, function, and pain therapy published in national and international journals. She is associate editor of the Journal of Aligner Orthodontics (JAO) and lecturer for the University of Vienna, Austria. Dr. Haubrich has been a clinical speaker for Align Technology since 2005, and is a board member and Conference President of the German Society of Aligner Orthodontics (Deutsche Gesellschaft für Aligner Orthodontie, DGAO).

Editor

Dr. Beatriz Solano Mendoza

Spain, Sevilla

Editor

Prof. James Mah DMSc

United States of America, Las Vegas

Dr. Mah obtained his Doctorate of Dental Surgery, Master of Science degrees and his Certificate of Specialization in Orthodontics from the University of Alberta and his Doctorate of Medical Science degree from Harvard University. Dr. Mah is the Dean at UNLV School of Dental Medicine. He was recently recognized by Stanford University in the top 2% of dentists cited globally with over 100 publications, several textbook chapters and several hundred national and international presentations. He also serves as Associate Editor of the Journal of Aligner Orthodontics and is a reviewer for the American Journal of Orthodontics & Dentofacial Orthopedics, Journal of Clinical Orthodontics and the Angle Orthodontist.

Coordinating editor

Elizabeth Ducker

United Kingdom

phone: +44 (0)7779 710265
e-mail: ducker@quintessence-publishing.com

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Journal of Aligner Orthodontics, 03/2021

Open AccessPages 170-242, Language: English

Full Issue 3/2021

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Open AccessEditorialPages 171-172, Language: EnglishChhatwani, Sachin / Danesh, Gholamreza

Even in aligner orthodontics, the only constant in life is change

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Open AccessOriginal Scientific ArticlePages 175-183, Language: EnglishSchmidt Dolci, Gabriel / Ferguson, Donald / Vaid, Nikhilesh R. / Mah, James / Cardon, Stefan

Hybrid mechanics for early interceptive treatment of anterior crossbite

Early interception of anterior crossbite has functional, structural and aesthetic benefits that have been widely enumerated in the literature. The goal of early interception usually involves proclination of the maxillary incisors, thus eliminating mandibular anterior shift; maxillary disjunction and protraction to correct transverse and sagittal deficiencies, respectively; and maintenance or improvement of mandibular compensation, thus creating as much horizontal overlap as possible. The present study illustrates a case treated for 24 months with a modified Catalan appliance incorporated into in-office aligners. The treatment results highlighted the efficacy of hybrid mechanics for mandibular compensation and protraction of the maxillary dentition. The 5-year follow-up demonstrated relative stability of the final outcome. Keywords: anterior crossbite, Class III treatment, clear aligners, extraoral traction appliance, growing patient, in-office aligners, interceptive orthodontics, maxillary arch expansion, removable orthodontic appliances

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Open AccessOriginal Scientific ArticlePages 185-195, Language: EnglishSanches Fernandes, Fabrício / Trindade Mattos, Cláudia / de Vasconcellos Vilella, Oswaldo

Effects of Class II maxillomandibular elastics on Invisalign aligners: An in vitro study

Objective: To evaluate the effects of Class II maxillomandibular elastics on Invisalign aligners (Align Technology, San Jose, CA, USA) and assess whether the type of fitting or immersion in a medium simulating the oral environment influence possible dimensional changes. Materials and methods: Twenty new pairs of Invisalign aligners were tested. Ten pairs had inserts for maxillomandibular elastics made by the manufacturer (precision cuts) and ten had cutouts. Epoxy resin casts were created for aligners, and were later mounted on articulators. Class II maxillomandibular elastics were attached to the fittings with a force of approximately 130 gf. The width and anteroposterior distance were measured at predetermined points prior to the use of elastics and 24 hours, 7 days and 14 days after force application began. Ten sets of models, each with a pair of aligners, were immersed in artificial saliva at 37°C over the experimental period, and the other 10 were kept in a dry environment. Results: Statistically significant changes were observed mainly in the first 24 hours. In the dry environment, the aligners with precision cuts suffered the most considerable deformations. Dimensional changes increased in both groups when they were maintained in a simulated oral environment. The highest values of changes were observed closer to the site where the elastics were fitted. Conclusion: Class II maxillomandibular elastics cause dimensional deformations of Invisalign aligners. The changes recorded in maxillary intercanine distance and the distance between mandibular first molars in the immersed aligners with both types of fitting were considered statistically and clinically significant. Keywords: aesthetic aligners, Invisalign, orthodontics

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Open AccessOriginal Scientific ArticlePages 197-208, Language: EnglishSpanier, Claudia / Ratzmann, Anja / Krey, Karl-Friedrich

Influence of print layer height and printing material on model accuracy and precision: A 3D surface comparison of models printed using fused filament fabrication

Objectives: To investigate the effect of layer height on the accuracy of orthodontic models utilising fused filament fabrication, particularly with regard to optimising in-office aligner manufacture. The suitability of fused filament fabrication was assessed by comparing the results to a high precision digital light processing control group. Materials and methods: Based on a digital sectioned maxillary model, 18 physical models were printed using fused filament fabrication technology at different layer heights (50.0 μm, 80.9 μm, 100.0 μm, 150.0 μm, 160.8 μm, 200.0 μm, 250.0 μm, 300.0 μm and 332.6 μm) using two different materials (polylactide PLA NX2 and lignin-based polymer Green-TEC PRO [Extrudr, Lauterach, Austria]). Two DLP models with a layer height of 20.0 μm were produced, representing the control group. Subsequently, all physical models were digitally scanned and compared via 3D superimposition using GOM Inspect software (GOM, Braunschweig, Germany). Results: The Dahlberg analysis and intraobserver intraclass correlation proved the accuracy of the 3D superimposition measurement to be excellent and repeatable. Models printed using fused filament fabrication technology from lignin-based polymer within the range of 100.0 to 332.6 μm decreased in precision as layer height increased. Furthermore, the analysis recorded declining precision of fused filament fabrication models below 100.0 μm. Models printed using lignin-based polymer were superior in precision compared to those made from polylactide. Conclusions: The accuracy and precision of fused filament fabrication models can be regulated by altering layer height; however, other parameters such as optimised printing material and print settings are necessary for consistent high quality. As such, fused filament fabrication printing is an accurate, cost-effective and sustainable technology to create aligner models in orthodontic practice. Keywords: 3D printing, 3D superimposition, digital light processing, fused filament fabrication, orthodontic models

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Open AccessCase reportPages 209-215, Language: EnglishHagiliassis, John Andrew / Abdelmalek, George

Aligners and smile makeovers: The benefits are clear

Although the benefits of orthodontic treatment are well documented, the adult population has long been resistant to wearing metal braces. Smile makeovers have commonly consisted of masking misalignment with disproportionate restorative material and heavier tooth preparations. The advent of clear aligners, however, has allowed dental professionals to offer a smile makeover that is biological and minimally invasive. Moreover, by utilising technology and a simple 3D scan, it is possible to simulate the end result that patients can expect with different modalities, thus increasing the chances of case acceptance, patient motivation and informed consent. Keywords: adult orthodontics, aesthetic orthodontics, aesthetics, anterior reverse articulation, case report, crowding, diagnostic procedure, digital dentistry, facial dimension, interdisciplinary treatment, Invisalign, malocclusion, restorative dentistry

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Open AccessCase reportPages 217-223, Language: EnglishChaudhari, Prabhat Kumar / Turkyilmaz, Ilser / Zere, Edlira / Sokhi, Ramandeep Kaur

In-house aligners for correction of relapse in mandibular incisor alignment

Objective: To describe a technique for fully digital in-house aligner fabrication to treat orthodontic problems encountered during the coronavirus pandemic. Case description: A 21-year-old woman presented to the outpatient department of the Division of Orthodontics and Dentofacial Deformities at the Centre for Dental Education and Research, All India Institute of Medical Sciences in New Delhi, India with the chief complaints of impingement due to a broken mandibular fixed retainer and relapse of mandibular incisor alignment. After resolving the impingement problem, a fully digital in-house aligner was used to correct the misalignment of the mandibular anterior teeth over a treatment period of 2 weeks without any support from an external laboratory. Conclusion: The use of CAD/CAM technology together with 3D printing and thermoforming, as described in the present report, may represent a feasible approach for treating mild orthodontic problems without the need to outsource laboratory support; it is therefore a practical treatment option during the coronavirus pandemic. Keywords: 3D printing, 3D scanning, aligners, incisor crowding, orthodontics, relapse

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Open AccessSummaries of publicationsPages 225-233, Language: EnglishMiethke, Rainer-Reginald