2025 OSI AUTUMN MEETING
"Modern Orthodontics in 3D: From Skeletal Anchorage to Transverse Diagnosis and Digital Integration”
Friday 14th - Saturday 15th November 2025
Johnstown Estate Hotel, Johnstown, Enfield, Co. Meath.

Björn Ludwig D.M.D., M.S., Ph. D.
Björn Ludwig is an orthodontic specialist who operates his private office in a small village in Germany. He holds positions at three universities: the University of Homburg/Saar in Germany, the Department of Orthodontics, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Sweden, and as an Adjunct Professor at Kyung Hee University School of Dentistry, Seoul, Korea. While his primary focus is on clinical work, he has a strong affinity for technology, which consistently sparks his interest. He is dedicated to advancing as a researcher and writer, actively participating in a variety of research projects and taking on editorial roles for academic journals. Furthermore, he serves as an editor for several books and is the author of numerous book chapters in classic orthodontic texts. You can find his research work by following these links. In addition to his passion for orthodontics, he also takes pleasure in cycling as a means to unwind.

Dr Jassin Arnold, MSc, PhD
Dr Jassin Arnold is a distinguished orthodontist based in Germany, with academic and clinical roles across Europe. He earned his Master’s Degree in Orthodontics from Donau (Danube) University in Austria in 2011. Since completing his postgraduate studies, Dr. Arnold has been engaged in full-time private orthodontic practice at his clinic in Waldbroel, Germany. In 2021, he expanded his professional reach by joining the faculty at Danube Private University in Krems, Austria, where he serves as an Associate Professor and educator at the Centre of CAD/CAM and Digital Dentistry. His work bridges advanced clinical orthodontics and the evolving field of digital dental technologies.

Dr. Armando Dias da Silva, MD, DDS, MSc
Dr. Armando Dias da Silva is a specialist in orthodontics with a dental degree from the Oporto Faculty of Dentistry and a Master of Science in Orthodontics from Oporto University. He completed his postgraduate orthodontic training at FMD UP and has held academic roles at both the Faculty of Dentistry in Oporto and the Faculty of Medicine. He is also a guest lecturer at the Universities of Salamanca and Seville.Former President of the Portuguese Orthodontic Society (2017–2019), Dr. Dias da Silva is certified in CCO, Damon, Invisalign, and Incognito systems. An internationally recognised speaker, he has lectured across Europe, the Americas, and the Middle East. In 2022, he was named “Personality of the Year in Orthodontics” by Saúde Oral. He has maintained a private orthodontic practice in Porto since 1998 and is a FACE Diplomate and invited lecturer for the FACE group.







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Registration is now open!
The OSI welcomes Specialist Orthodontists and Post-Graduate Orthodontic Students
We are a participating Society of the FEO Same Rate Agreement
Course Fee Non-Members €650
Reduced rate for OSI Members and affiliated society Members €450 (€400 early bird)
Postgraduate Orthodontic Students €250 (€200 early bird)
Orthodontic Therapists, Nurses & Practice Team €250
Dinner Friday 14th November €80pp
Early Bird Rate ends 1st November 2025