ArticleBMC oral health2025
Recycled PMMA particles from milled discs in denture base materials for improved sustainability.
Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed.
- Comparison of additive and subtractive digital workflow for the accuracy of removable occlusal stabilization-splints - an in-vitro study.Clinical oral investigations · 2026Article
- Review
- Surface hardness and roughness in glass fiber-modified polymethyl methacrylate resin: AnBioinformation · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesRecycling polymethyl methacrylate (PMMA) in dentistry offers a sustainable solution to address the environmental challenges posed by material waste. This study evaluates the feasibility of incorporating recycled (PMMA) particles into heat-cured denture base materials, focusing on the effects of particle size and concentration on flexural strength, surface hardness, and surface roughness. MATERIAL AND
methodsRecycled PMMA particles, sourced from milling residuals, were classified into fine (< 400 μm) and whole particles and incorporated into virgin PMMA at 10% and 20% weight/weight (w/w) concentrations to form five groups: Control (100% virgin PMMA), Fine 10% (90% virgin PMMA + 10% fine particles), Fine 20% (80% virgin PMMA + 20% fine particles), Whole 10% (90% virgin PMMA + 10% whole particles), and Whole 20% (80% virgin PMMA + 20% whole particles). Flexural strength (n = 10) was evaluated using a three-point bending test, surface hardness (n = 10) was assessed using the Vickers hardness test (VHN), and surface roughness (n = 10) was measured using an optical profilometer. Statistical analysis was performed using two-way ANOVA and Tukey's post hoc test, with p < 0.05 considered statistically significant.
resultsThe results showed that fine particle groups (10% and 20%) maintained flexural strength comparable to the control, whereas whole particle groups exhibited significantly lower values (p < 0.05). Surface hardness improved in fine particle groups, with the highest value in the 20% fine particle group, whereas whole particles, particularly at 20%, resulted in the lowest hardness (p < 0.05). Surface roughness remained unaffected across all groups, with values staying within clinically acceptable limits (Ra < 0.2 μm).
conclusionsThese findings suggest that fine recycled PMMA particles can be effectively integrated into denture base materials to maintain or improve specific properties while contributing to sustainability. CLINICAL RELEVANCE: This study underscores the potential of recycled PMMA as an environmentally friendly alternative, aligning with global sustainability goals in dental material development.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.