Akademik Veri Yönetim Sistemi
12th CONSEURO 25th National & 12th International SEOC Congress, 03-05 April 2025, Cordoba, Spain, Cordoba, İspanya, 3 - 05 Nisan 2025, (Yayınlanmadı)
Aim: This
study aimed to determine the surface polishing effect on discoloration
properties of three-dimensional printed dental definitive resin.
Materials
and Methods: Formlabs permanent crown resins were used
to fabricate 40 rounded-shaped specimens (R=10, 2 mm heigth) (n = 40). Baseline
color (L, a, b) measurements were conducted. Subsequently, the samples were
categorized into four groups based on the polishing technique; Samples with
untreated surfaces, glazed (Optiglaze, GC) surfaces, sand-glazed surfaces and
pumice+alcohol+polishing paste surfaces (n = 10). Following polishing, the
specimens were immersed in coffee for 12 days in an upright position. Color
coordinate measurements were performed again. Color difference (ΔE00) was
calculated. The Shapiro-Wilk test was conducted to assess the normality of the
data distribution within the groups. For parameters following a normal
distribution, a one-way ANOVA test was performed. The Post Hoc Dunnett T3 test
was employed to identify differences between groups. A significance level of p
< 0.05 was considered for all statistical analyses
Results: There
was a significant difference in the mean ΔE values among the four groups (p
<0.001). The Control group exhibited a significantly higher ΔE than all
other groups (p < 0.001). The Pumice group demonstrated a significantly
lower ΔE than all groups (Control-Pum: p < 0.001, Opt-Pum: p = 0.011,
Sand-Pum: p = 0.003). No significant difference was observed between the
Optiglaze and Sand-glaze groups.
Conclusion:
The
surface glazing technique significantly influences the stainability of
3D-printed dental permanent resins. Among the tested groups, the
pumice-polished surfaces exhibited the least discoloration. This finding
highlights the importance of selecting appropriate surface treatment to enhance
the aesthetic longevity of 3D-printed dental materials.
Keywords:
additive
manufacturing, coffee immersion, polishing, stainability, 3D