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Microplastic Release from Clear Aligners: a Clinical Study
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Clear plastic teeth aligners, worn by millions to straighten teeth, can shed tiny plastic particles (microplastics and even smaller nanoplastics) into your saliva as you chew and wear them over time. This study is the first to measure this shedding directly in people's mouths, looking at how wear time and cleaning habits affect how much plastic breaks off. Since we don't yet fully know the health effects of swallowing these particles, this research is an important first step in understanding a possible hidden source of microplastic exposure in everyday dental care.
This research project aims to evaluate and quantify for the first time in vivo the release of micro- and nanoplastics into human saliva caused by the use of clear orthodontic aligners (primarily polyurethane and PET-G based), investigating how intraoral exposure time under masticatory forces and physical-chemical variations, as well as different device hygiene protocols, influence polymeric surface degradation and particle release rates analyzed via Scanning Electron Microscopy (SEM) and automated infrared microspectroscopy ($\mu ext{FTIR}$), thereby addressing a critical gap at the interface of dental biomaterials, oral health, and human toxicology.
More Papers Like This
Microplastic Release from Clear Aligners: a Clinical Study
AI summary Read the abstract
Clear teeth aligners, the plastic trays used instead of metal braces, can shed tiny plastic particles into your saliva as you wear and chew with them, according to this study. Researchers found that factors like how long you wear them each day and how you clean them affect how much plastic breaks off, meaning your daily habits could influence how much of this material ends up in your mouth. Since scientists are still learning what micro- and nanoplastics do to the body long-term, this research highlights an overlooked source of exposure worth paying attention to as more people use clear aligners for orthodontic treatment.
Orthodontic Clear Aligners as a Potential Source of Microplastic Exposure: Implications for Human Health and Environmental Sustainability
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If you're using clear plastic aligners to straighten your teeth (like Invisalign), this review of existing research suggests that everyday wear and tear from chewing and saliva may cause them to shed tiny plastic particles into your mouth. Scientists don't yet know how much this affects your health, but it adds to growing concerns about microplastics — tiny plastic fragments already found throughout the human body — while also raising questions about the environmental waste from millions of discarded aligners. More research is needed before we know if this is something to actually worry about.
Clear Aligners as a Prescribed Source of Unmeasured Intra-Oral Micro- and Nanoplastic Exposure: Release Mechanisms, Human Evidence, Salivary Biomonitoring and the EU Regulatory Context
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Clear plastic teeth aligners, worn nearly all day for months by kids and adults straightening their teeth, may shed tiny plastic particles and other substances into your mouth, according to this review of existing lab studies. The catch: nobody has actually measured how much of this plastic ends up in wearers' saliva or bodies yet, so scientists are calling for real-world testing (especially in children) before these devices become even more widely used. This matters because it adds to growing questions about everyday exposure to microplastics, even from sources we don't usually think of as "plastic products."
Experimental assessment of damage and microplastic release during cyclic loading of clear aligners
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Researchers tested three popular brands of clear orthodontic aligners under simulated chewing conditions and found that all released microplastic particles during use. Since patients wear aligners for extended periods each day, this represents a direct and ongoing source of microplastic ingestion, raising questions about the cumulative exposure from dental devices that are growing in popularity.
Can Clear Aligners Release Microplastics That Impact the Patient’s Overall Health? A Systematic Review
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This systematic review investigates whether clear orthodontic aligners release microplastics during use in the mouth. The findings raise concerns about a previously overlooked source of direct microplastic exposure, since millions of people wear these plastic devices against their teeth and gums for months or years at a time.
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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.