In today’s world, addressing the issue of plastic waste in the dental industry has become a very important step toward making our job more eco-friendly. It’s important to check the types of plastics used in dental offices and their applications to understand the environmental implications of plastic use better. Those working in dentistry need to learn sustainable waste management practices. By raising awareness of the effects tied to plastics and giving options that are better for the planet, we can push for the responsible use of such material within this sector. In this blog post, we will look into plastics in dentistry.
Types of Plastics
Polypropylene
☆ Disposable cups
Polypropylene (PP) is a plastic commonly found in the dental industry, and for good reason. This thermoplastic polymer is known for its durability and chemical resistance. One of the reasons it is so popular in our daily work is its excellent moisture resistance, which makes it ideal for procedures that involve exposure to liquids. You’ll often find PP being used in various dental products. A typical application is the creation of disposable cups.
However, I’ve made a change in my practice. I no longer use disposable cups for most dental procedures. Instead, I rinse the patient’s mouth using the air/water syringe, followed by suction. If I need my patients to rinse with mouthwash, I use the smallest paper cups. They’re perfect for this, not just for hard liquors. 🙂 It’s a small change, but it helps reduce waste, and I’ve found it just as effective.
☆ Instrument handles
Dental instrument handles are another essential application of PP. The handles of dental instruments, such as mirrors, explorers, curettes, and probes, are often made from PP due to their durability and resistance to chemical sterilization processes. PP handles provide a comfortable grip and aid in precise manipulation during procedures. Also, PP can be used for the handles of endodontic files.
In my practice, I’ve been fortunate that most of the instruments I use, like mirrors, probes, and explorers, come with metal handles, which is my preference. I’m also lucky that my favorite type of curettes has metal handles too, so I haven’t had to sacrifice anything when choosing more eco-friendly options. However, when it comes to endodontic files, I continue to follow the standard practice and use the PP versions until alternative materials become available.
☆ Other Dental Products
Polypropylene is found in a wide range of other dental products, demonstrating its versatility and importance in the field. Orthodontic retainers, impression trays, and surgical masks are just a few examples of PP’s applications. Its moisture resistance makes it particularly useful in maintaining the integrity of impression materials, while its strength and flexibility ensure long-term effectiveness in orthodontic devices.
Its applications are not limited to these items. This material can also be found in certain suture materials used in oral surgery. It is also present in common instruments, like disposable saliva ejector tips, irrigation syringes, cheek retractors, matrix systems, face shields, mixing wells, and trays. While dental applications benefit from PP’s advantages, addressing the environmental impact of its usage is crucial.
Being a plastic, polypropylene takes hundreds of years to break down. It contributes to the growing plastic waste problem. The convenience and effectiveness of these materials come with a price: more waste in landfills and oceans. As dental professionals, we can reduce our environmental impact by switching to eco-friendly alternatives. I often hear the argument, “Why should I change? Other people are still using plastic bottles, so what difference does it make?” But we’re not just individuals here; we’re part of a large industry. Every small change, whether it’s swapping a plastic cup for a paper one or choosing sustainable tools, adds up.
Polyethylene
Polyethylene (PE) is a common material in dental practices. You’ll find it in disposable barriers like patient bibs and tray covers. It helps keep things clean and safe. PE also appears in packaging materials for dental supplies. It ensures proper storage and sterilization. You’ll see it in orthodontic elastics and disposable mixing tips too. Its flexibility, moisture resistance, and low cost make it popular.
Polyethylene resists natural degradation. Like polypropylene, it has a similar chemical structure. This makes it hard to break down. Over time, PE breaks into microplastics. and these microplastics contaminate water sources, harming marine life and ecosystems. Personally, I stopped using tray covers, and when possible, I avoid using mixing tips. These small changes add up. As I always say, every little bit counts.
Polycarbonate
Polycarbonate (PC) is a durable and transparent plastic. It offers exceptional impact resistance, making it ideal for applications requiring safety and durability. Dental safety glasses commonly use polycarbonate to protect the eyes of both dental professionals and patients. It allows for clear vision during procedures while guarding against potential hazards. Polycarbonate also plays a role in orthodontics. It is used in brackets, where its strength and resilience help it withstand the forces during orthodontic adjustments.
However, polycarbonate production can have negative environmental effects. The manufacturing process involves chemicals like bisphenol-A, which pose risks to human health and the environment if not handled properly.
On a positive note, eco-friendly alternatives are gaining traction in orthodontics. Some manufacturers are experimenting with recycled metals for brackets and wires, ensuring durability while promoting environmental responsibility. Biodegradable aligners made from plant-based polymers are beginning to make their mark in the industry, as well. Unlike traditional aligners made from petroleum-based plastics, these eco-friendly aligners naturally break down over time, helping reduce landfill waste. And don’t worry, they don’t just disappear overnight from your patient’s mouth! 🙂
While researching this topic, I came across an interesting page about GT Flex Green, a compostable, plant-based aligner and retainer material. You can check it out here.
Polyvinyl Chloride
Polyvinyl Chloride (PVC) is found in suction tubing, air/water syringe tubing, and dental unit waterlines. PVC offers a reliable and flexible conduit for air, water, and suction, ensuring smooth and efficient dental procedures. We can also find PVC in dental model materials, base plates, denture lining material and bite registration materials.
Polyvinyl Chloride (PVC) is widely regarded as one of the most environmentally damaging plastics. From production to disposal, the PVC lifecycle results in the release of toxic chlorine-based chemicals. It is also a major source of dioxins, which are highly toxic and can cause severe environmental damage. A 2020 study found that PVC has a higher potential for global warming than other plastics due to its high energy consumption during production and significant CO2 emissions.
When we consider the environmental footprint of PVC in dentistry, it’s important to understand its lasting effects. This is why exploring alternatives can make a difference.
Improving Plastic Use in Dentistry
It’s clear that plastics are widely used in dentistry. By being aware of the types of plastics used and their applications, proactive steps can be taken to promote responsible usage. Moreover, exploring sustainable waste management practices is also essential. A separate blog post will cover strategies for responsible waste management in dental settings. Until then, check out the post on Simple Ways to Make Your Dental Office More Eco-Friendly.
0 Comments