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Particle and Microplastic Release from Printed Photopolymers: Wear, Weathering, Measurement and Exposure Boundaries
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3D printed plastic items, like denture teeth, can shed tiny particles through wear, sanding, sun exposure, and everyday use. This paper does not measure a specific health risk. Instead, it lays out standards for accurately testing how much plastic these products actually release, since sloppy measurements can't tell us whether there's real cause for concern.
Printed photopolymers can lose matter through abrasion, fracture, surface ageing and combined environmental-mechanical loading, but a measured mass loss or airborne particle signal does not by itself establish a microplastic-release rate. Direct VPP evidence shows measurable wear of SLA photopolymer denture teeth under controlled tribological loading [1] and task-resolved particle emission during vat-photopolymerisation processing, including sanding [2]. Broader polymer evidence shows that ultraviolet exposure and mechanical abrasion can interact to accelerate surface degradation and particle release [3]. ER-277 defines how those observations should be converted into a defensible release assessment for printed photopolymers. It separates article wear from manufacturing aerosol, distinguishes mass loss from particle number and size distribution, requires recovery-efficiency and blank controls, and treats weathering history, surface state and exposure compartment as part of the measured state. No universal microplastic emission factor, particle-size distribution or environmental exposure threshold is claimed. ER-277 · Version v0.2.
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Particle and Microplastic Release from Printed Photopolymers: Wear, Weathering, Measurement and Exposure Boundaries
AI summary Read the abstract
3D printed plastic objects, like denture teeth, can shed tiny particles through everyday wear, sanding, and sun exposure. This paper does not measure exact health risks but instead proposes a careful method for scientists to properly measure how much plastic actually breaks off, since sloppy measurements could over or underestimate real world exposure.
Method for quantification of microplastic release from plastic-based materials during weathering
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Researchers developed a method to quantify microplastic release from plastic-based materials during weathering, responding to the need for limits on how much MP a product can release over its lifetime. The method enabled standardized measurement of MP generation from photodegradation during product use and end-of-life mismanagement.
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This review examined how improperly cured 3D-printed dental resin restorations release microplastic particles and leachable monomers in the mouth, identifying incomplete polymerization during fabrication as a key risk factor for intraoral chemical exposure.
Microplastic Release from Dental Materials: Environmental and Biological Implications
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This review examines how dental materials—composites, adhesives, denture bases, and orthodontic appliances—degrade under mechanical, thermal, enzymatic, and chemical stressors to release microplastics, contributing to both direct patient exposure and environmental contamination.
Microscopic Acid‐Induced Degradation and Elemental Release From Thermoformed and 3D ‐Printed Orthodontic Aligners in a Simulated Gastric Environment
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.