The Hidden Health Risks of Plastic Oral Devices

For decades, the dental and sleep industry has relied on thermoplastic materials for splints, retainers, and anti-snoring devices. However, groundbreaking scientific research from 2022 to 2025 has brought to light the unintended consequences of wearing plastics in the mouth.
The Microplastic Problem: Wearing Down Plastics in the Mouth
Your jaw exerts immense pressure during sleep, especially if you grind your teeth (bruxism). A 2023 laboratory study utilizing a chewing simulator found that standard thermoplastic devices lose a massive amount of material through sheer mechanical wear. A 2025 study confirmed that this cyclic pressure causes devices like clear aligners to shed highly irregular microplastic fragments—some as small as 5 micrometers—directly into saliva.

For decades, the dental and sleep industry has relied on thermoplastic materials for splints, retainers, and anti-snoring devices. However, groundbreaking scientific research from 2022 to 2025 has brought to light the unintended consequences of wearing plastics in the mouth.
Systemic Health: Where Do Swallowed Microplastics Go?
The microplastics shed by oral devices do not just pass harmlessly through the body.
- Gut Health: Researchers at the University of Vienna (2022) tracked how micro- and nanoplastics act as "Trojan horses" in the digestive tract, crossing biological barriers and triggering inflammatory immune cells.
- Heart Health: In a landmark 2024 study published in the New England Journal of Medicine, researchers detected microplastics embedded deeply within human arterial plaque, noting a strong correlation between plastic burden and an increased risk of cardiovascular events.

For decades, the dental and sleep industry has relied on thermoplastic materials for splints, retainers, and anti-snoring devices. However, groundbreaking scientific research from 2022 to 2025 has brought to light the unintended consequences of wearing plastics in the mouth.
Chemical Leaching and Your Gums
Plastics require chemicals to remain flexible or hold their shape. A 2024 clinical review highlighted that materials heavily used in thick night splints and aligners can leach residual chemical monomers. This constant "micro-dosing" of chemicals into the soft tissues of the mouth is clinically linked to contact dermatitis, mucosal irritation, and localized cellular stress.

For decades, the dental and sleep industry has relied on thermoplastic materials for splints, retainers, and anti-snoring devices. However, groundbreaking scientific research from 2022 to 2025 has brought to light the unintended consequences of wearing plastics in the mouth.
The Bacterial Trap: Disrupting the Oral Microbiome
Plastic devices degrade unevenly, creating microscopic craters and scratches. A 2025 review identified these rough plastic surfaces as ideal biological anchors for pathogenic bacteria (like Streptococcus mutans). This drastically shifts the ecosystem of your mouth, increasing susceptibility to bad breath, dental decay, and gum inflammation.

For decades, the dental and sleep industry has relied on thermoplastic materials for splints, retainers, and anti-snoring devices. However, groundbreaking scientific research from 2022 to 2025 has brought to light the unintended consequences of wearing plastics in the mouth.
The Somnowell Standard: Why We Choose Medical-Grade Cobalt Chrome
Your long-term health should never be compromised for a temporary fix. This is why the Somnowell appliance is exclusively engineered from surgical-grade Cobalt Chrome. Unlike plastics, our cast-metal alloy cannot splinter, degrade, or shed microplastics into your body. Because it is completely non-porous, it remains impervious to bacterial buildup, keeping your mouth clean and fresh. Biocompatible and fully chemically inert, Cobalt Chrome is the gold standard for safety, durability, and lifetime peace of mind.
Master Reference List
[1] Barile, C., et al. (2025). Experimental assessment of damage and microplastic release during cyclic loading of clear aligners. PLOS ONE, 20(2), e0318207.
- Link: Read the paper here
- URL: https://doi.org/10.1371/journal.pone.0318207
[2] Boronow, K. E., et al. (2019). Serum concentrations of PFASs and exposure-related behaviors in African American and non-Hispanic white women. Journal of Exposure Science & Environmental Epidemiology, 29(2), 206–217.
- Link: Read the paper here
- URL: https://doi.org/10.1038/s41370-018-0109-y
[3] Gruber, E. S., et al. (2022). To Waste or Not to Waste: Questioning Potential Health Risks of Micro- and Nanoplastics with a Focus on Their Ingestion and Potential Carcinogenicity. Exposure and Health, 15(1), 33–51.
- Link: Read the paper here
- URL: https://doi.org/10.1007/s12403-022-00470-8
[4] Hamran, T., et al. (2023). Orthodontic thermoplastic materials; an in vitro study of leachates, micro-hardness and simulated wear. European Journal of Orthodontics, 45(6), Abstract e5.
- Link: Read the paper here
- URL: https://academic.oup.com/ejo/article-pdf/45/6/e1/53949693/cjad072.pdf
[5] Jiao, Y., Fu, Z., & Ni, X. (2025). Association Between Serum Levels of Perfluoroalkyl and Polyfluoroalkyl Substances and Dental Floss Use. Journal of Clinical Periodontology.
- Link: Read the paper here
- URL: https://doi.org/10.1111/jcpe.14126
[6] Marfella, R., et al. (2024). Microplastics and Nanoplastics in Atheromas and Cardiovascular Events. New England Journal of Medicine, 390(10), 900–910.
- Link: Read the paper here
- URL: https://doi.org/10.1056/nejmoa2309822
[7] Review Article (2024). Cytotoxicity and Endocrine Disruption in Materials Used for Removable Orthodontic Retainers: A Comprehensive Review. PMC12191447.
- Link: Read the paper here
- URL: https://pmc.ncbi.nlm.nih.gov/articles/PMC12191447/
[8] Tanna, D. A., & Bhandary, S. (2025). The hidden hazards: The silent invasion of microplastics in dentistry (Review). World Academy of Sciences Journal.
- Link: Read the paper here
- URL: https://www.spandidos-publications.com/10.3892/wasj.2025.323