Related Experiment Video
Updated: Mar 8, 2026
Evaluating the Effects of Different Polishing Methods on Color Stability of Dental Restorations in Pediatric Dentistry
Published on: June 6, 2025
Color and Translucency Stability of Additively Manufactured Interim Dental Restorative Materials: An In Vitro Aging
Fadi Bitar1, Tariq Alsahafi1,2, Jean-Pierre Albouy1
1Department of Restorative Sciences, University of North Carolina, Adams School of Dentistry, Chapel Hill, North Carolina, USA.
The optical stability of additively manufactured interim restorative resins varies significantly. Primeprint Temp showed better color and translucency stability than Ceramic Crown Resin, but milled hybrid ceramics performed best overall.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Restorative Dentistry
Background:
- Additive manufacturing (AM) offers aesthetic interim restorations.
- The long-term optical stability of AM interim restorative materials is not well understood.
Purpose of the Study:
- To evaluate the impact of material composition and manufacturing method on the optical stability of AM interim restorative resins.
- To compare the optical properties of AM resins with milled hybrid ceramic blocks after in vitro aging.
Main Methods:
- 240 disc specimens of four AM resins and two milled hybrid ceramics were fabricated.
- Specimens underwent finishing, polishing, and aging in coffee, grape juice, deionized water, or thermocycling.
- Color stability (ΔE₀₀) and relative translucency parameter (RTP₀₀) were measured.
Main Results:
- Material type significantly influenced color and translucency post-aging (p < 0.001).
- Primeprint Temp exhibited the least color change among AM resins (ΔE₀₀ = 4.30 ± 1.10), while Ceramic Crown Resin showed the most (ΔE₀₀ = 13.52 ± 1.40).
- Milled hybrid ceramic (Enamic) demonstrated the lowest overall color change; Ceramic Crown Resin significantly reduced translucency (ΔRTP₀₀ = -2.70 ± 0.55) in coffee.
Conclusions:
- Primeprint Temp offered superior color and translucency stability compared to other AM resins.
- Ceramic Crown Resin displayed the least stability, especially when exposed to coffee.
- Milled hybrid ceramics provided the best optical stability among all tested materials.
More Related Videos
07:42Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
05:42Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique
Published on: July 27, 2022