ArticleBMC oral health2026
Effects of high temperature with pressure post-treatment on the Vickers hardness, color stability, and translucency of 3D-printed denture teeth resin under thermocycling conditions.
Article in BMC oral health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Enhancing Wear Resistance and Surface Hardness of Three-Dimensionally Printed Denture Teeth Through Post-Treatment Under Elevated Temperature and Pressure.Journal of functional biomaterials · 2026Article
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Authors and funding
7 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundThis study aimed to evaluate the effects of post-treatment at elevated temperature and pressure on the hardness, color stability, and translucency of 3D-printed denture teeth resin, both before and after thermocycling.
methodsOne hundred specimens were randomly assigned to five groups: four post-treated groups (121 °C at 2 bar for 4, 30, 60, and 90 min) and one untreated control group. Fifty specimens were used for hardness test, and fifty for optical tests. Specimens underwent thermocycling. Hardness was measured under a 50 g load for 15 s. Color differences were assessed using a spectrophotometer, and translucency was calculated from CIE L*a*b* values. Statistical analysis included Welch’s ANOVA with Dunnett’s T3 test for hardness, and one-way ANOVA with Tukey’s post hoc test for optical tests. Paired t-tests compared pre- and post-thermocycling values (α = 0.05).
resultsPost-treated groups exhibited significantly higher hardness than the control group. After thermocycling, specimens treated for 30 min or longer maintained significantly higher hardness compared to the 4-minute and control groups. Color difference was higher in the 60- and 90-minute groups, and thermocycling further increased color difference in all groups except the 90-minute group. Post-treatment significantly affected translucency, which increased after thermocycling in the 30- and 60-minute groups.
conclusionsUnder the limitations of this study, post-treatment improved hardness, especially with durations exceeding 30 min, although longer treatments caused greater color difference after thermocycling. Translucency was not significantly altered by post-treatment alone, whereas it increased in the longer-treated groups after thermocycling.
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