Effect of Storage Time on the Dimensional Stability of 3D Printed Dental Model Resins

Authors

  • Mohammed M. Sadoon
  • Aliaa Wameedh Al-Omari
  • Omar Abdul Mohsin Sheet Department of Prosthodontics, College of Dentistry, University of Mosul, Iraq

DOI:

https://doi.org/10.5195/d3000.2026.1555

Keywords:

Plant-Based Resin, Composite Resin, Dental Models

Abstract

The aim of this study was to evaluate the effect of storage-induced aging on the dimensional stability of two 3D printed resins, a plant-based and a conventional dental model resin. Sixteen dental models were fabricated from a maxillary typodont CAD reference file using two resin types (n = 8 each): a conventional resin and a plant-based UV resin, printed on a high-precision LCD 3D printer. Models were stored under standardized dry, dark, room-temperature conditions and digitized at five time points (days 1, 7, 14, 21 and 30). Deviation from the reference CAD file was quantified as the root mean square (RMS) using best-fit surface alignment in Geomagic Control X software. Data were analyzed with two-way ANOVA and Bonferroni post hoc comparisons (α = 0.05). Dimensional deviation increased progressively over time for both resins, but the conventional resin exhibited consistently greater deviation, rising from 0.387 mm at day 1 to 0.740 mm at day 30, compared with 0.200 mm to 0.331 mm for the plant-based resin. Significant main effects of resin type and storage time were found (p < 0.001), along with a significant resin × time interaction (p < 0.001), indicating that the conventional resin deviated sharply through day 14 before plateauing, while the plant-based resin showed a comparatively flat, stable trajectory. Both resins showed progressive dimensional change with storage, but the plant-based resin demonstrated superior long-term dimensional stability.

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Published

2026-09-15

Issue

Vol. 14 No. 2 (2026)

Section

Adults & the Elderly

License

Copyright (c) 2026 Mohammed M. Sadoon, Aliaa Wameedh Al-Omari, Omar Abdul Mohsin Sheet

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