Transfer Accuracy of 3D-printed Indirect Bonding Trays

Not Applicable

Completed

• Conditions: Dental Bonding
• Interventions: Device: 3D printed tray

• Registration Number: NCT04683874
• Lead Sponsor: Thorsten Gruenheid

Brief Summary

This study evaluates the transfer accuracy of 3D-printed trays for indirect bonding of orthodontic brackets in vivo. Accurate placement of orthodontic brackets at the beginning of treatment improves treatment efficiency and shortens treatment time. Indirect bonding is a method of placing orthodontic brackets on a plaster or digital model of the dentition, followed by the transfer of these brackets to the patients' teeth using a transfer tray. Various indirect bonding methods have been developed with the aim of improved bracket positioning and reduced chair time. The success of these methods ultimately depends on how reliably the precise positioning of the brackets on the model can be transferred to the patient's teeth.

Detailed Description

Not available

Study Timeline

• Study Start: 2020-08-25
• Study First Submitted: 2020-12-18
• Study First Submitted QC: 2020-12-23
• Study First Posted: 2020-12-24
• Primary Completion: 2021-08-25
• Status Verified: 2021-09
• Last Update Submitted: 2021-09-28
• Study Completion: 2021-09-29
• Last Update Posted: 2021-09-30

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 23

Inclusion Criteria

• Adults and children (ages 12 years and older) who are in the permanent dentition.

Exclusion Criteria

• Less than 12 years of age, primary or mixed dentition, or bonded orthodontic appliances present, prosthetic restorations on the facial surfaces of teeth, craniofacial anomalies, and dental anomalies such as malformation, microdontia, or severe attrition

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
3D printed tray	3D printed tray	3D printed tray

Primary Outcome Measures

Name	Time	Method
Transfer accuracy	At time of bonding, i.e. day 1	Transfer accuracy expressed as difference in bracket position between setup and clinical situation, as a result of the indirect bonding procedure. These differences will include both the magnitude and the direction, and will be reported in 6 dimensions; i.e. as mesial-distal, buccal-lingual, and occlusal-gingival linear differences as well as torque, tip, and rotation angular differences. Linear differences will be expressed in millimeters, angular differences will be expressed in degrees.

Trial Locations

Locations (1)

University of Minnesota; 🇺🇸 Minneapolis, Minnesota, United States