Split-Mouth Comparison of Invisalign Attachments
Enrolling by invitation · Not applicable
Conditions studied: Wear, Restoration, Volume Assessment, Clear Aligner Appliance
In brief
This study evaluates how accurately the attachments used in Invisalign treatment (Align Technology Inc., San Jose, CA, USA) match their planned shapes and sizes in the ClinCheck software (ClinCheck®, Align Technology Inc., San Jose, CA, USA). Attachments are small tooth-colored bumps that help clear aligners grip the teeth and move them effectively. The investigators are comparing two types of attachments: optimized and conventional, to determine which is bonded to the tooth more accurately and maintains its shape better over time. Participants beginning Invisalign treatment will have attachments placed as part of their normal care. Digital scans will be taken immediately after placement and during follow-up visits to assess attachment accuracy and wear. The goal is to identify which attachment design provides greater precision and durability to improve the predictability and efficiency of Invisalign treatment planning.
Key facts
- Study ID
- NCT07215598
- Run by
- University of Maryland, Baltimore
- People needed
- 30
- Starts
- 2025-11-20
- Expected to finish
- 2028-07-01
- Last updated by the study team
- 2026-02-10
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Adults aged18 years or older.
- Patients initiating Invisalign treatment with planned composite attachments.
- Ability to provide written informed consent and agree to additional research intra-oral scans.
- Good oral hygiene and absence of active periodontal disease at enrollment.
You may not qualify if…
- Extensive dental restorations (composites, crowns, veneers) on study teeth that could interfere with attachment bonding.
- Enamel defects or severe wear on study tooth surfaces affecting bonding accuracy.
- Contraindications to digital intraoral scanning (e.g., severe gag reflex, metallic prostheses preventing accurate imaging).
- Severe tooth malposition that would compromise accurate attachment placement.
- Poor oral hygiene or active periodontal disease at enrollment and/or if the patient develops poor oral hygiene or active periodontal disease during treatment.
Where it is running
- University of Maryland School of Dentistry — Baltimore, Maryland, United States
Full record on ClinicalTrials.gov
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