NCT07352644

Factors Affecting Attachment Loss in Clear Aligner Treatment

Factors Affecting Attachment Loss in Clear Aligner Treatment: A Prospective Clinical Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 4 (actual)
• Sponsor: Bezmialem Vakif University · Academic / Other
• Sex: All
• Age: 12 Years
• Healthy volunteers: Not accepted

Summary

This prospective clinical study evaluated the incidence of composite attachment loss in patients undergoing clear aligner treatment and identified patient-, tooth-, and treatment-related factors associated with attachment debonding. Twenty-one patients were followed for six months, and attachment failures were recorded at routine visits. Outcomes were compared according to attachment type (conventional vs. optimized), attachment size, tooth type, dental arch, and patient-related factors.

Detailed description

Composite attachments are integral to clear aligner therapy for improving force delivery, retention, and control of complex tooth movements. Despite their biomechanical importance, attachment loss remains a common clinical challenge and may compromise treatment efficiency and predictability. In this prospective study, attachments were bonded following the manufacturer's protocol using a high-viscosity composite. Patients were followed for six months, and attachment failures were documented with respect to type, size, tooth position, and patient-related behaviors. The primary objective was to determine the incidence of attachment loss and to identify factors associated with debonding, thereby contributing to clinical strategies that may reduce attachment failure and enhance treatment outcomes.

Conditions

• Malocclusion
• Crowded Teeth
• Attachment

Interventions

Type	Name	Description
DEVICE	Clear Aligners with Composite Attachments	Participants received clear aligner therapy (Invisalign®, Align Technology, San Jose, CA, USA). Composite attachments were bonded according to the manufacturer's protocol using a high-viscosity composite. Both conventional and optimized attachment types were used as part of the planned orthodontic treatment, and attachment loss was prospectively evaluated during a 6-month follow-up period.

Timeline

• Start date: 2022-01-01
• Primary completion: 2022-06-01
• Completion: 2022-06-01
• First posted: 2026-01-20
• Last updated: 2026-01-20

Locations

1 site across 1 country: Turkey (Türkiye)