What does this research mean for the field?

The Diaprint 3D Twist multi-step rubber polishing system yields significantly smoother and glossier surfaces on 3D-printed permanent resins compared to aluminum oxide discs, achieving roughness levels below the clinical threshold for bacterial adhesion. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate the influence of different polishing protocols on the surface roughness and gloss of two additively manufactured permanent resins used for definitive dental restorations.

August 31, 2026European Annals of Dental SciencesOpen Access

Comparative Evaluation of Polishing Protocols on the Surface Roughness and Gloss of Additively Manufactured Permanent Resins

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Authors

EMEsra Yildirim ManavLokman Hekim Üniversitesi SSSedanur SAKALLILokman Hekim Üniversitesi SCSimge CanatanPsychiatric Association of Turkey

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Implication

In vitro study demonstrates superior smoothness and gloss with multi-step rubber polishing on 3D-printed dental resins, suggesting optimal surface quality below bacterial adhesion thresholds.

Key Points

To evaluate the influence of different polishing protocols on the surface roughness and gloss of two additively manufactured permanent resins used for definitive dental restorations.
Sixty disk specimens (12 × 2 mm; N=60) were printed from two permanent resins (Bego VarseoSmile Crown Plus and Saremco CrownTec) and post-cured using a xenon flash light-curing unit.
Specimens were divided into three groups (n=10 per material): unpolished control, Diaprint 3D Twist multi-step rubber polishers, and OptiDisc aluminum oxide discs.
Surface roughness (Ra) was measured using a contact profilometer, while surface gloss (GU) was recorded with a glossmeter across three incident angles (20°, 60°, 85°) per ISO 2813 and analyzed using two-way ANOVA and Tukey's test (α=0.05).
Polishing protocol significantly influenced surface roughness (p < 0.001) while material type did not (p > 0.05), with Diaprint 3D Twist producing the lowest roughness values (Ra = 0.22 ± 0.04 µm; p < 0.05 vs. OptiDisc and control).
Both polishing protocol (p = 0.001) and material type (p < 0.001) significantly altered gloss, with the highest gloss recorded in the Saremco-Diaprint 3D Twist group (79.0 ± 4.6 GU) and no significant interaction between factors.

Cite This Study

Manav et al. (2026) studied this question.

synapsesocial.com/papers/6a95427bf20e493292a74c91 https://doi.org/10.52037/eads.2026.0013

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Implication

In vitro study demonstrates superior smoothness and gloss with multi-step rubber polishing on 3D-printed dental resins, suggesting optimal surface quality below bacterial adhesion thresholds.

Comparative Evaluation of Polishing Protocols on the Surface Roughness and Gloss of Additively Manufactured Permanent Resins

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Implication

Key Points

Cite This Study

Comparative Evaluation of Polishing Protocols on the Surface Roughness and Gloss of Additively Manufactured Permanent Resins

Discussion

Member takes

Implication

Key Points

Cite This Study

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