Today's episode explores a growing issue in both dentistry and public health: microplastics and nanoplastics, often called MNPs.

What are micro- and nanoplastics?

Microplastics are tiny plastic particles smaller than 5 millimeters, while nanoplastics are even smaller—less than 1 micrometer. These particles are now found everywhere in the environment, including water, air, soil, and even inside the human body. Researchers have already detected them in blood, lungs, placenta, breast milk, and stool.

Plastics contain over 13,000 chemicals, and thousands of these substances may be harmful to human health, including carcinogens, endocrine disruptors, and neurotoxic compounds.

Why does this matter for dentistry?

Dentistry is both a source and pathway of exposure to micro- and nanoplastics.

Several common dental materials and devices release these particles, including:

• Resin-based composite fillings

• Clear aligners and orthodontic appliances

• Prosthetic materials like dentures

• Impression materials used for dental molds

These materials can release microplastics through wear, degradation, polishing, and everyday use.

Oral care products as another source

Daily oral hygiene products also contribute to exposure. Examples include:

• Toothpastes

• Toothbrushes

• Dental floss

• Mouthwashes

Over time, these products can release small plastic particles that may be ingested or inhaled, leading to chronic exposure.

Possible effects on oral health

Research suggests that micro- and nanoplastics may affect the oral environment in several ways, including:

• Irritation of oral tissues

• Disruption of the oral microbiome

• Damage to oral cells

• Potential genotoxic effects

Some studies also suggest that long-term exposure could contribute to oral cancer, although more research is needed.

Systemic health concerns

Because these particles are so small, they can cross biological barriers and spread throughout the body.

Experimental studies show they may cause:

• Oxidative stress

• Inflammation

• Immune system disruption

• Hormonal interference

• Microbiome imbalance

• Potential effects on fertility, brain health, and development

Microplastics can also act as carriers for other environmental toxins, which may increase their harmful effects.

Awareness and regulation

Despite the growing evidence, the review highlights that clinical awareness in dentistry is still limited, and regulatory oversight remains insufficient.

Many dental professionals may not yet consider microplastic release when selecting materials or products.

Want to see more of The Holistic Dentistry Show? Watch our episodes on YouTube!

Do you have a mouth- or body-related question for Dr. Sanda? Send her a message on Instagram! Remember, you're not healthy until your mouth is healthy. So take care of it in the most natural way.

Key takeaway:

• (00:00) Unveiling Microplastics in Dentistry
• (03:07) Sources and Health Implications of Microplastics
• (05:57) Dental Materials and Microplastic Release
• (08:17) Health Risks of Microplastics in Dentistry
• (11:06) Consumer Awareness and Material Choices
• (13:59) Environmental Impact of Dental Plastics
• (16:38) Strategies for Reducing Microplastic Exposure
• (19:00) Future of Dentistry and Material Safety
• (25:08) Official Outro Holistic Dentistry

Connect With Us:

AskDrSanda | YouTube

BeverlyHillsDentalHealth.com | Instagram

DrSandaMoldovan.com | Instagram

Orasana.com | Instagram