Effect of Clear Aligner Attachment Design on Extrusion of Maxillary Lateral Incisors

Virginia Commonwealth University40 enrolled

Overview

The purpose of this research is to test which of four clear aligner attachment types is more efficient in extruding (erupting) maxillary lateral incisors vertically into correct position during orthodontic treatment.

Attachments are small tooth-colored shapes that are bonded (attached) to teeth before or during treatment with clear aligners. They are like handles, giving aligners something to gently push teeth into correct positions. There are 4 different shapes of attachments that are commonly used to extrude lateral incisors (incisally-beveled, gingivally-beveled, optimized and horizontal). All 4 of these attachments are successful in extruding lateral incisors but there is not enough research evidence to know for sure which attachment would be ideal for a specific circumstance.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Maxillary Lateral Incisor Malocclusion

Interventions

Incisally-beveled attachmentDEVICE

Incisally-beveled attachments will be bonded to teeth before or during orthodontal treatment with clear aligners

Gingivally-beveled attachmentDEVICE

Gingivally-beveled attachments will be bonded to teeth before or during orthodontal treatment with clear aligners

Optimized attachmentDEVICE

Optimized attachments will be bonded to teeth before or during orthodontal treatment with clear aligners

Eligibility

Sex: ALLMin age: 16 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: 1. Patients 16 years or older to be treated with either Comprehensive Invisalign or Invisalign Teen, 2. Maxillary lateral incisor requiring 0.3 mm or more extrusion (as determined by ClinCheck), 3. Maxillary arch with less than 6 mm of crowding or spacing, 4. All teeth present and fully erupted (excluding third molars). Exclusion Criteria: 1. Presence of anterior crossbite 2. Any missing teeth in the maxillary arch 3. Treatment plan includes surgery or extraction of any maxillary teeth, 4. Maxillary lateral incisors with pathology or large restorations (crowns) 5. Maxillary lateral incisors have a less than 0.3 mm of extrusion prescribed in the Tooth Movement Table on the Invisalign ClinCheck

Locations (1)

Virginia Commonwealth University

Richmond, Virginia, United States

Outcomes

Primary Outcomes

Percent of Vertical Tooth Movement

Percent achieved of the vertical (inciso-gingival) tooth movement will be assessed by comparing the initial ClinCheck software estimate tooth movement required to the amount of tooth movement observed

Time frame: 6 months

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.