Title (English)
Bracket transfer accuracy of two three-dimensionally printed lingual indirect bonding trays with different bracket frame designs
Thong tin bai bao / Article info
- Tac gia / Authors: Natasa Suvajac, Linus Hötzel, Lea Hoffmann, A. Keßler, Andrea Wichelhaus, Hisham Sabbagh
- Tap chi / Journal: The Angle Orthodontist
- Ngay xuat ban / Published: 2026-06-18
- DOI: 10.2319/101625-864.1
- Nguon / Source: OpenAlex
Abstract (English)
ABSTRACT Objectives To compare bracket transfer accuracy of two three-dimensionally (3D) printed indirect bonding tray designs for lingual indirect bonding. Materials and Methods Virtual bracket placement was performed using OnyxCeph (OnyxCeph 3D Lab, Chemnitz, Germany). Tray design 1 was designed with a low bracket frame, while tray design 2 was designed with a high bracket frame. A total of 30 bonding trays and corresponding dental models were additively manufactured, 15 per design. After indirect bonding, achieved bracket positions were scanned. Linear and angular transfer errors were assessed. Statistical analysis of mean transfer errors and frequency of clinically acceptable errors (defined as < 0.5 mm and < 2°) were performed using Mann-Whitney U -test and χ 2 test. Results Both tray designs demonstrated comparable transfer accuracy. Linear, tip, and rotation errors were mostly within clinical limits. All linear values were acceptable, except for vertical dimension in the incisors (98.3%). Rotation accuracy was high across all tooth groups (78.9–100%). Torque showed the greatest deviations, with only 11.9% of incisor brackets in the high-frame and 75.4% in the low-frame groups within acceptable limits. Overall, torque consistently had the lowest rate of clinically acceptable outcomes across both tray designs. Conclusions Considering favorable transfer accuracy and improved handling characteristics of the low-frame tray design, its clinical application may be preferred. However, achieving high accuracy in the torque dimension remains a challenge with 3D-printed indirect bonding trays.
Doc bai day du / Read full article
Bai dang tu dong boi plugin Ortho OA Fetcher. Anh (neu co) tu PubMed Central. Noi dung lay tu nguon open access va dich tu dong – chi mang tinh tham khao.
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