Transfer Accuracy of 3D-printed Indirect Bonding Trays

Thorsten Gruenheid23 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

Purpose

DEVICE_FEASIBILITY

Masking

NONE

Enrollment

Conditions

Dental Bonding

Interventions

Eligibility

Sex: ALLMin age: 12 YearsMax age: 65 Years

Medical Language ↔ Plain English

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

Outcomes

Primary Outcomes

Transfer accuracy

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.

Time frame: At time of bonding, i.e. day 1