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Does Aging Affect PolyJet™ 3D-Printed Teeth for Endodontics? A Micro-CT Evaluation.

Cláudia Barbosa1,2,3, Tiago Reis2,4, José B Reis5

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PubMed
Summary
This summary is machine-generated.

Aging affects PolyJet™ 3D-printed teeth (3DPT) printed on the X-axis but not the Y-axis. This impacts dimensional accuracy and shaping behavior, highlighting the need to report printing batch and storage time for reliable results.

Keywords:
3D printed teeth3D printingPolyJet™agingendodontics

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Area of Science:

  • Biomaterials Science
  • Dental Materials
  • Additive Manufacturing

Background:

  • PolyJet™ 3D-printed teeth (3DPT) are increasingly used in dental research.
  • The aging effects on the dimensional accuracy and morphological stability of 3DPT require thorough investigation.

Purpose of the Study:

  • To evaluate the aging effect (0, 6, and 12 months) on PolyJet™ 3D-printed teeth (3DPT).
  • To assess aging's impact on dimensional accuracy, morphological stability, and shaping behavior.
  • To compare aging effects based on printing orientation (X vs. Y axes).

Main Methods:

  • PolyJet™ 3D-printed teeth were produced in X and Y axis orientations.
  • Specimens were subjected to aging for 0, 6, and 12 months.
  • Microcomputed tomography (micro-CT) was used for pre- and post-root canal preparation analysis.

Main Results:

  • Aging caused significant dimensional changes in X-axis printed teeth (XA0 vs. XA12, p < 0.05).
  • Y-axis printed teeth showed no significant aging-related differences (p > 0.05).
  • Aging influenced endodontic preparation parameters, affecting shaping behavior more than dimensional accuracy.

Conclusions:

  • X-axis printed PolyJet™ 3DPT are not comparable over time due to aging.
  • Y-axis printed PolyJet™ 3DPT maintain baseline consistency after aging.
  • Future studies should report printing batch and storage time for PolyJet™ 3DPT to ensure result reliability.