Your smile is about more than straight teeth. It’s about protecting your long-term oral health, too!
Clear aligners and clear retainers have become popular choices in orthodontics because they are nearly invisible and convenient. However, emerging research into microplastics and nanoplastics is raising important questions about the materials we place in our mouths and wear for extended periods.
At Sheridan Smiles, Dr. Sheridan considers more than just the appearance of your smile when choosing orthodontic appliances. He also considers how those appliances may affect your bite, the function of your teeth, and your overall health.
What Are Microplastics and Nanoplastics?
Microplastics are tiny plastic particles, while nanoplastics are even smaller particles that can interact with biological systems. Researchers are studying how these particles may be released from plastic materials and what potential effects they could have on the human body.
Because clear aligners and retainers spend hours in the mouth, researchers are investigating how saliva, temperature, and prolonged intraoral wear may influence particle release from these appliances.
Some studies have reported differences in particle shedding between directly 3D-printed appliances and thermoformed appliances, which are made by heating and shaping plastic. Research is ongoing, and the potential long-term health implications of exposure to these particles are not yet fully understood.
Why Doesn't Dr. Sheridan Use Clear Retainers Long Term?
Dr. Sheridan takes a thoughtful approach to retainer selection, with a focus on both tooth function and long-term stability.
Here are some of the reasons behind this approach:
1. Considering potential microplastic exposure
Research into plastic dental appliances has raised questions about the release of microplastic and nanoplastic particles during use. Some laboratory findings have also prompted investigation into possible biological effects of particles released from certain materials.
Although more research is needed to determine what these findings mean for patients in everyday clinical use, Dr. Sheridan believes it is important to consider the materials used in orthodontic appliances rather than focusing on appearance alone.
2. Protecting your natural bite
Many clear retainers cover the biting surfaces of your teeth. Dr. Sheridan prefers retainers that leave these surfaces uncovered.
Why does this matter? Your teeth need to fit together properly to maintain a comfortable, functional bite. Choosing a retainer design that does not cover the biting surfaces allows those surfaces to remain uncovered while your teeth are retained in their corrected positions.
3. Putting long-term oral health first
Orthodontic treatment is about more than creating a beautiful smile. It is also about maintaining healthy tooth alignment, proper function, and a stable bite for years to come.
Dr. Sheridan carefully considers these factors when recommending retention options for patients after orthodontic treatment.
A Healthier Approach to Retaining Your Smile
At Sheridan Smiles, we believe your orthodontic care should consider the whole picture: the appearance of your teeth, the function of your bite, and the materials used throughout treatment.
Dr. Sheridan's approach prioritizes retainers that leave the biting surfaces of your teeth uncovered and reflects a commitment to thoughtful, patient-centered care.
Your smile deserves care that goes beyond straight teeth!
Have questions about your retainer options or how to maintain your results after braces or clear aligner treatment? Contact Sheridan Smiles. We are happy to discuss your options and help you protect your smile for the long term.
Research into microplastic exposure from dental appliances is ongoing. Current evidence does not establish the long-term health risks of wearing clear retainers, and particle release can vary by material and appliance design. Retainer selection should be individualized to each patient's orthodontic needs.

