Invisalign: Digital Orthodontic System with SmartTrack Technology

Invisalign, developed by Align Technology, is a clear aligner system that combines digital orthodontic planning with a sequence of customized, removable appliances for progressive tooth movement.

Materials and Manufacturing

Invisalign aligners are manufactured using SmartTrack, a proprietary multilayer thermoplastic material designed to deliver controlled orthodontic forces and maintain adaptation to dental surfaces.

The manufacturing workflow integrates digital dental models, three-dimensional treatment planning and industrial production of customized aligners.

Technology and Clinical Applications

The system incorporates several proprietary technologies:

• SmartTrack: multilayer material designed for controlled force delivery.
• SmartForce: attachments and aligner features that assist specific orthodontic movements.
• SmartStage: technology for sequencing planned tooth movements.

ClinCheck Pro software enables clinicians to plan and modify tooth positions, rotations, torque, interproximal reduction (IPR) and attachment placement.

Invisalign can be used for selected cases of crowding, spacing and different types of malocclusion, depending on clinical complexity.

Clinical Considerations

Movement predictability varies according to the tooth movement required. Complex rotations, extrusions and significant skeletal discrepancies may require auxiliary techniques or alternative orthodontic approaches.

Digital treatment simulations represent planned movements rather than guaranteed clinical outcomes.

The system requires individualized diagnosis, professional monitoring and patient compliance.