Actively Recruiting
Effect of Clear Aligner Attachment Size on Extrusion of Maxillary Lateral Incisors
Led by Virginia Commonwealth University · Updated on 2026-03-16
40
Participants Needed
1
Research Sites
56 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
Orthodontic treatment has been revolutionized by clear aligner therapy, offering patients a more esthetic and comfortable alternative to traditional braces. In 1999, Align Technology introduced Invisalign. As Invisalign has increased in popularity and demand over the past two decades, clinical trials have shed light on the efficacy of Invisalign treatment. there have been changes in the Invisalign protocol such as introduction of SmartForce features in 2008, such as optimized attachments as well as the implementation of SmartTrack aligner material in 2011. Compared to conventional fixed orthodontic appliances, Invisalign cannot be adjusted on a visit-to visit basis. If ideal tooth movement has not been achieved after completion of the first sequence of aligners, additional trays, known as refinement trays, are required.
CONDITIONS
Official Title
Effect of Clear Aligner Attachment Size on Extrusion of Maxillary Lateral Incisors
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Patients treated with either Comprehensive Invisalign or Invisalign Teen treatment
- The maxillary arch has less than 6 mm of crowding or spacing
- Maxillary lateral incisors have a minimum of 0.3 mm of extrusion prescribed in the Tooth Movement Table on the Invisalign ClinCheck for the first set of aligners
- Maxillary lateral incisors within a normal range of bucco-lingual inclination
- Patients 12 years of age or older and either the patient or legal guardian are able to give consent
- Patients confirm good compliance throughout the study period
You will not qualify if you...
- Patients do not complete all aligners in the first phase as prescribed
- Poor compliance recorded for aligner wear
- Restorations placed or oral surgery completed prior to final scan
- Midcourse intervention to improve tracking such as a bootstrap
- Maxillary lateral incisors not tracking and noted by minimum of 1 mm of aligner material incisally displaced when aligner fully seated
- Treatment plans include surgery or extractions
- Maxillary lateral incisors with pathology and restorations
- Missing teeth other than third molars
- Patients with anterior crossbite
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Virginia Commonwealth University
Richmond, Virginia, United States, 23298
Actively Recruiting
Research Team
A
Alexis Catalano
CONTACT
S
Steven Lindauer
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
4
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