Bracket transfer accuracy of 3D printed transfer tray versus direct bonding

Bracket transfer accuracy of 3D printed transfer tray versus direct bonding - IDB

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00028971

Enrollment

Registered

2022-06-10

Start date

2021-09-01

Completion date

Unknown

Last updated

2025-10-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

K07.3

Interventions

Group 1: Direct bonding (Bracktes are placed on the tooth by hand) Group 2: Indirect bonding (brackets are placed indirectly on the tooth via a splint

Eligibility

Sex/Gender

All

Age

10 Years to 99 Years

Inclusion criteria

Inclusion criteria: Signed declaration of consent, indication for multi-band therapy, exclusion of carious lesions, periodontitis or other pathological abnormalities, complete medical history, clinical and radiological findings (OPG, FRS

Exclusion criteria

Exclusion criteria: Oligodontia, lack of compliance, restricted mouth opening

Design outcomes

Primary

Measure	Time frame
The primary aim of this study is to analyze the bracket positioning accuracy of 3D printed transfer trays compared to directly bonded brackets in vivo. For this purpose, the bracket offset of the bonded bracket position to the designed bracket position is analyzed in mm and degrees at T0 (directly after bonding the brackets), T1 (3 months after bonding) and T2 (6 months after bonding the brackets) by means of an intraoral scan. The measurement method used is a software-based iterative-closest-point (ICP) algorithm. This end point is reached at these defined times (T0, T1, T2).	—

Measure

Time frame

The primary aim of this study is to analyze the bracket positioning accuracy of 3D printed transfer trays compared to directly bonded brackets in vivo. For this purpose, the bracket offset of the bonded bracket position to the designed bracket position is analyzed in mm and degrees at T0 (directly after bonding the brackets), T1 (3 months after bonding) and T2 (6 months after bonding the brackets) by means of an intraoral scan. The measurement method used is a software-based iterative-closest-point (ICP) algorithm. This end point is reached at these defined times (T0, T1, T2).

—

Secondary

Measure	Time frame
As a secondary objective, the impact of the bracket positioning accuracy in relation to the different tooth groups (incisors, canines, premolars, molars) of 3D printed transfer splints compared to directly bonded brackets is investigated.	—

Countries

Germany

Contacts

Public ContactHisham Sabbagh

Poliklinik für Kieferorthopädie

hisham.sabbagh@med.uni-muenchen.de+4989440053231

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026