World-class technology innovation.

The Invisalign® system is the most technically advanced clear aligner system in the world.

These innovations are clinically proven to work together to deliver predictable clinical results by creating the right force system to improve tooth movement. Align® Technology continually invests in R&D, resulting in a steady cadence of significant product evolutions.

SmartTrack® material

An ideal material for delivering orthodontic treatment.

SmartTrack material is designed exclusively for the Invisalign system to deliver the optimal force systems to provide greater predictability of tooth movement.

Watch Ken Wu, Product Research Engineer at Align Technology, explain the physical properties that make SmartTrack the ideal material for delivering orthodontic treatment.

Delivering 75% more predictability than off-the-shelf products.1

Off-the-shelf material loses substantial energy in the first few days of aligner wear, resulting in higher initial discomfort and poor tracking. SmartTrack material however, delivers 75% more predictability and can withstand 4x more insertion and removal cycles than the average off-the-shelf material.

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1Data on file at Align Technology.

SmartForce® features

Software-driven attachments for simple to complex movements.

The Invisalign system is designed specifically for treatment for a range of malocclusions, such as open bite, deep bite, or first premolar extraction (planned for maximum anchorage).

Proprietary ClinCheck® treatment-planning software analyzes tooth movements to determine the optimal force system required and automatically places attachments and features to achieve the desired movement based on specific tooth size and shape.

SmartStage technology

Designed to optimize tooth movements for greater predictability.

Proprietary SmartStage technology is an advanced algorithm that determines the optimal path2 of tooth movement and the shape of the aligner3 at every stage of treatment. It helps to generate the desired force systems necessary for more predictable treatment outcomes.

2 The optimal path of tooth movement is determined by the progression of movements in the aligner.
3 The shape of the aligner at each stage is determined by aligner activations.

Invisalign Innovation Pathway

With over two decades of experience, 5.5 million patients, and extensive benchtop testing, Align continuously elevates the biomechanics of moving teeth to the next level. Progressing beyond just moving crowns from a decade ago, Align engineers have developed technology to give doctors more control over the roots in multiple dimensions.

Controlling root position.

Power Ridge features are a prime example of Invisalign aligner’s ability to control root position by applying lingual root torque. It allows for the tooth to be moved to the desired position with lingual root torque.


Transverse dimension.

Through molar attachments and SmartStage technology, Invisalign First treatment provides improved dental expansion for younger patients.


Vertical dimension.

Extrusion and intrusion attachments facilitates both posterior and anterior vertical control. These can effectively help address open bites, deep bites, and leveling the Curve of Spee.


Sagittal dimension: extractions.

Invisalign aligners are able to control the root and crown in groups of teeth, allowing orthodontists to plan for anterior retraction with moderate or maximum anchorage for anterior and posterior movement along the sagittal plane.

Invisalign with Mandibular Advancement has moved beyond dental correction and can also achieve skeletal correction for Class II malocclusion.

The science of the Invisalign system

Advancing treatment innovations for more predictable outcomes.

SmartTrack material when combined with SmartForce features and SmartStage technology allows more predictable tooth movement, which is unmatched by any other clear aligner system.

Learn more about the science of the Invisalign system and how Align Technology helps providers treat with confidence – to achieve practice success through successful outcomes.

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Committed to enabling research in orthodontics.

Align Technology has opened its 2019 Research Award Program to support clinical and scientific dental research in universities across the globe. This year, up to $300,000 will be awarded to university faculty for scientific and technological research initiatives to advance patient care in the fields of orthodontics and dentistry.

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