• Dr. Sameer Bhandari

The Materials Used To Make Aligners And How They Work




If you are considering Invisalign or another type of orthodontic treatment that uses clear aligners, you may be wondering what aligners are made of and how they work.

In this article, we will take a look at the materials used to make aligners and how they work.

Invisalign aligners are made of a patented material called SmartTrack. SmartTrack is a triple-layered material that is soft and pliable, yet tough and durable. The material is also transparent, so it is virtually invisible when worn.

Most other brands of clear aligners are made of polyurethane (PU) or PETG. PETG is a clear, strong, and heat-resistant plastic that is often used in food packaging. It is also used in some brands of aligners because it is easier to mold than PU. Illusion Aligners and ClearCorrect are two brands that use PETG in their aligners.


Teeth aligners are made of Aligner trays, which are made of a specially created, FDA-approved, and BPA-free polyurethane resin plastic. This more durable plastic is resistant to cracks and stains, so the aligners remain clear even after use. This makes them less visible in a person's mouth.


Most aligners are made of a plastic called polymethyl methacrylate (PMMA). This plastic has the same properties as Plexiglas, acrylics, synthetic gems, and lenses - it is transparent, durable, and strong. Some aligners are even made of polyethersulfone (PES), which is often used in food containers. PES aligners are transparent, but they are not as strong as PMMA aligners. PES aligners may be considered delicate and might break if misused or chewed on by young children. This may cause discomfort as they are stiffer than other aligners.


Currently set of aligners is made from trimethyl orthosilicate. Orthodontic plastic is used in aligners because it can be simply molded into 3-D shapes. Being highly tough, this material even has lubricants embedded within it. This assists in lowering friction when you move your jaw while wearing them, making them more comfortable than ever before.


Aligners that are current with technology are more reasonable in price than other aligners, making it a more sensible choice for people who want to ensure they are getting results of professional quality without having to spend a fortune. The majority of people opt for Invisible teeth aligners which are practically imperceptible to the naked eye.

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