APPLIANCES IN ORTHODONTICS - DIGITAL APPROACH

Virtual planning and 3D printing have become the new standard for modern orthodontics with significant advantages over traditional planning method such as better planning visualization, improved accuracy and superior prognosis and assistance for difficult cases. Combined with the development of softwares, the virtual planning solution for orthodontic appliances is now ready to use routinely. However, mastering those softwares are still a burden for surgeons who are often busy with their clinical work. The aim of this program is to offer hands-on training in how to perform planning virtually and in house farbrication for those appliances in orthodontics as well as applying to clinical practice. The basic principles of TMD, OSA and Direct Clear Aligner will also revisited. Furthermore, live surgery with minimally invasive technique will also presented. After this workshop, the learners should be able to:

1. Equipment Introduction
- Intra-oral scanner (3Shape Trios), 3D printer, Face scan
- Software: 3shape, TITAN, LuxCreo (LuxDesign, LuxFlow), Deltaface, Autodesk Meshmixer.
1. Indirect bonding in digital workflow
- Digital IDB procedure/ bracket library in 3shape
- Application of the software: OrthoAnalyzer (bracket placement) and Appliance Designer
- Fabrication of the transfer jig: made from vacuum former (print” bracket transfer master model” first)/ direct printing: made from “shell mode”
- Discussion: Common errors in the workflow, customized braces or archwires, labial or lingual technique.
1. In-house aligner
- 1) VF Aligner– Vacuum Forming
Model preparation / Diagnostic setup/ attachment placement/ staging the treatment/ therapeutic setup/ decide the number of aligners in each stage/ print the aligner models/ aligner tray fabrication.
- 2) DP Aligner– Direct to Print
Directly Printed Aligners, simplified workflow, setting parameters, design flexibility, 4D smart material, shape memory function.
- Discussion: Differences between VFA and DPA. Active Memory Polymer VS Shape Memory Polymer
1. Metal 3D Printed appliance
- Device for upper molars intrusion, distalization, mesialization.
- TPA, Lingual holding arch, Tongue crib, RPE
1. New Ideas/ New Workflows
- MSE digital workflow
- OGS digital workflow (integration of face scan, CT, oral scan)
- Auto-transplantation digital workflow
- DIY bracket and tube (combined with model setup and transfer jig design)
- Hybrid Orthodontic Treatment
- IDT in the digital era (application in worn dentition, early implant placement, temporary crown design w/ special features)

Virtual planning and 3D printing have become the new standard for modern orthodontics with significant advantages over traditional planning method such as better planning visualization, improved accuracy and superior prognosis and assistance for difficult cases. Combined with the development of softwares, the virtual planning solution for orthodontic appliances is now ready to use routinely. However, mastering those softwares are still a burden for clinicians who are often busy with their clinical work. The aim of this program is to offer hands-on training in how to perform planning virtually and in house farbrication for those appliances in orthodontics as well as applying to clinical practice. The basic principles of TMD, OSA and Direct Clear Aligner will also revisited. Furthermore, live surgery with minimally invasive technique will also presented. After this workshop, the learners should be able to:

- Understanding digital workflow of 3D Printing in Orthodontics.
- Understanding digital approach of Aligners, Indirect bonding tray, Metal 3D Printed Appliances.
- Knowing the benefits and limitation of Appliances in TMD, OSA.
- Knowing the new ideas: MSE; OGS; Auto transplantation, DIY brackets and tube, Hybrid Orthodontic treatment; IDT in the digital era.

SPEAKERS

Prof. Jean-Marc Retrouvey

2023 -current: Invited Professor Case Western (Cleveland),
2019-2023: Chair Department of Orthodontics UMKC ( Kansas City)
2001-2019: Director Division Orthodontics McGill University
1995-2000: Director of Continuing Education, Montreal Children Hospital, Dentistry Department.
Speakers at AAO annual Conferences, Mahidol University (Digital Orthodotnics), SIDO (Italia).

Kelvin Wen Chung-Chang, DDS.MSc.

2021-2026: Chairman of Education Committee, Taiwan Association of Orthodontists.
2016- 2026: Advisor, World Implant Orthodontic Association.
2003 – 2026: Adjunct clinical instructor, Orthodontic Department, National Taiwan University Hospital.
Speaker at TAO, VAO, WIOC. Special interests: Digital Orthodontics, Direct Clear Aligners.

By professional for professionals

CDT. Willis Tseng

Current: Director of Breeze Dental Laboratory
2023-2025: Speaker in Digital Orthodontics workshop at TAO (Taiwan); ASO (Japan), National Taiwan University.
2025: “3Shape Clear Aligner Studio Workshop” Certification by 3Shape Taiwan.