Biomechanics and Aligner Therapy. Hands-on workshop by Giorgio Fiorelli

An opportunity to learn from one of the leading figures in modern orthodontics and the master behind refined and predictable biomechanics in orthodontics — Dr. Giorgio Fiorelli.

This 3-day advanced hands-on is a must-attend event for all practitioners working with aligners, who really want to understand what aligners can truly achieve — and what they cannot.

Through a rigorous biomechanical approach and real clinical evidence, Dr. Giorgio Fiorelli will guide you through:
 

— The true force systems behind aligners
— The biological limits that influence predictability
— When and why aligners fail
— How to overcome these limitations using smart, low-visibility hybrid mechanics. 

Key topics of the seminar include:
 

— The foundations of aligner biomechanics
— Limitations of tooth movements and anchorage issues with aligners
— Extraction and non-extraction cases
— Deep bite correction and expansion
— Anchorage with TADs
— Hybrid approaches for molar uprighting, deep bite correction, true intrusion, and space closure.

During the hands-on typodont session, you will practice:
 

— Molar uprighting mechanics
— Intrusion mechanics on a typodont (with various devices)
— Controlled extrusion using different appliances
— Space closure mechanics
— Protocols for planning hybrid therapy and selecting the appropriate appliance based on clinical needs.

This course is your chance to learn first-hand and unlock the hidden potential of aligners by mastering the true, defined principles of advanced biomechanics.

IMPORTANT: the “Seminar. Standard”, “Seminar. Comfort” and “Seminar. VIP” participation options are also available for purchase.

Advantages of the “Hands-On Workshop” participation option:

– Participation in the scientific program
– Coffee break
– Notes and handouts
– Certificate of participation
– ADA credits available upon request
– Lunch 
– Priority seats in the venue
– Distinct reception counter
– VIP certificate
– VIP badge 

– Access to online training by Giorgio Fiorelli «Biomechanics in orthodontics»

– Access to online training by Chris Chang «Simplified mechanics for challenging cases»

– Access to online training by Patricia Vergara «Impacted premolars and canines in the maxilla: diagnostics, treatment planning, surgical and orthodontic treatment»

– Access to online training by Marco Rosa «Effective biomechanics. Part 1»

– Access to online training by Kleber Meireles «Second Order Bends. Fabrication and Clinical Application️»

Day 1

Morning Session

— Foundations of aligner biomechanics:
 

- Mechanical properties of aligner materials (PET-G, TPU, SmartTrack, TC-85)
- Stiffness, moment of inertia, span length and force delivery in thermoplastic appliances
- Stress–relaxation and clinical consequences
- Biological limits: capillary pressure thresholds and safe force levels.

Afternoon Session

— Limitations of tooth movements with aligners:
 

- Predictability of different movements
- Least predictable movements: rotations, extrusions, true intrusion
- Why aligners overload teeth: setup increments, material thickness, stress–distribution problems.
 

— Anchorage issues with aligners:
 

Threshold forces, resistance levels, equilibrium analysis
T1 and T2 phase of treatment.
 

— Clinical consequences: refinement cycles, uncontrolled tipping, anchorage loss:
 

- When aligners fail and why: evidence-based discussion.

Day 2

Morning Session

— Clinical case analysis and effective treatment planning:
 

- Extraction and non-extraction cases
- Deep bite correction: what is achievable vs not
- Expansion and asymmetrical corrections
- Anchorage with TADs: direct, indirect, and hybrid mechanics
- Sequencing movements to avoid loss of control
- How to assess predictability before approving the setup.

Afternoon Session

— Hybrid approach for molar uprighting:
 

- Why aligners struggle
- Simple aesthetic appliances for controlled uprighting: cantilevers and alpha-beta springs. With or without TADs.
 

— Hybrid approach for deep bite correction:
 

- Evidence-based approach. Real intrusion with aligners
- How minimal fixed appliances can produce true incisal intrusion.
 

— Intrusions and extrusions:
 

- Biological limits, span length problems, and force delivery issues
- Aesthetic auxiliaries for predictable vertical movements.
 

— Space Closure:
 

- Why aligners often fail to deliver the right M/F ratio
- Using aesthetic fixed mechanics to close spaces before switching to aligners
- Anchorage reinforcement strategies.

Day 3

Morning Session 

— Molar uprighting mechanics, Step-by-step exercises on typodont:
 

- Different low-visibility appliances for controlled uprighting
- Anchorage management and force vector control.
 

— Deep bite correction setups:
 

- Practical construction of appliances for true intrusion
- Intrusion mechanics on typodont (with different devices)
- Adjustments for vertical dimension control.

Afternoon Session 

— Vertical corrections. Intrusion and extrusion:
 

- Vertical mechanics with aesthetic auxiliaries
- Managing intrusions when aligners alone are insufficient
- Controlled extrusion exercises with various appliances.
 

— Space closure mechanics:
 

- Preventing tipping and maintaining M/F ratios
- Anchorage: heavy vs light approaches.
 

— Planning a hybrid therapy:
 

- Build the short initial fixed-applinace phase, followed by the aligner phase
- Selection of the appropriate appliance depending on the typodont scenario.