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[Precision of three-dimensional printed brackets].

D Zhang1, L C Wang1, Y H Zhou1

  • 1Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

Beijing Da Xue Xue Bao. Yi Xue Ban = Journal of Peking University. Health Sciences
|August 18, 2017
PubMed
Summary
This summary is machine-generated.

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This study assessed the dimensional accuracy of 3D printed orthodontic brackets used in indirect bonding. While slight variations were found, they may not significantly impact clinical accuracy, warranting further investigation.

Area of Science:

  • Orthodontics
  • Biomedical Engineering
  • Digital Dentistry

Background:

  • Digital workflows are transforming orthodontics, particularly in indirect bonding procedures.
  • Accurate 3D printing of orthodontic components is crucial for the success of digital workflows.

Purpose of the Study:

  • To evaluate the dimensional accuracy of 3D printed brackets and buccal tubes.
  • To assess the feasibility of a digital orthodontic workflow involving 3D printing for indirect bonding.

Main Methods:

  • Intraoral scans and CBCT data were used to create digital models of 14 malocclusion patients.
  • Custom software facilitated virtual bracket positioning and 3D model generation.
  • Indirect bonding transfer trays with 3D printed brackets were fabricated using EDEN260V.

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  • Digital calipers measured bracket and buccal tube dimensions, compared against standard values.

    • Main Results:

    • Significant dimensional differences (0.04-0.17 mm) were observed in 13 out of 19 measurement items.
    • Most measured dimensions, including bracket width and buccal tube dimensions, were slightly larger than standard values.
    • The length of lower left premolar brackets was an exception, showing smaller mean values.

    Conclusions:

    • The observed dimensional variations in 3D printed brackets and buccal tubes may not compromise indirect bonding accuracy.
    • Further research is needed to confirm the clinical impact of these 0.04-0.17 mm differences on bracket retention and positioning.