How well does Invisalign ClinCheck predict actual results: A prospective study

Area of Science:

• Orthodontics
• Dental Technology
• Biomedical Engineering

Background:

• Clear aligner therapy, including Invisalign Lite, is increasingly popular for orthodontic treatment.
• Assessing the accuracy of tooth movement prediction in clear aligner therapy is crucial for treatment success.

Purpose of the Study:

• To compare achieved tooth movements with predicted movements after 28 weeks of Invisalign Lite treatment.
• To evaluate the performance of Invisalign Lite in achieving planned torque, tip, and rotation.

Main Methods:

• Digital impressions of 21 subjects treated with Invisalign Lite were analyzed.
• Tooth movement accuracy was assessed by comparing actual movements (T1) to predicted movements (ClinCheck setup) from baseline (T0).
• Variables included differences between obtained and planned torque, tip, rotation, and transverse linear changes.

Main Results:

• Torque expression was least accurate for maxillary and mandibular central incisors.
• Tip and rotation accuracy varied across teeth, with under-expression noted for several maxillary and mandibular teeth.
• Transverse linear changes were generally accurate, with overperformance in first molars.

Conclusions:

• Significant differences exist between planned and achieved torque for maxillary central incisors.
• Rotational corrections for most teeth showed discrepancies between planned and obtained outcomes.
• The study highlights areas for improvement in the predictability and execution of clear aligner treatment planning.