Invisalign uses a series of clear, removable plastic trays to gradually straighten teeth, without metal or wires. Invisalign aligners are practically invisible and allow patients to eat and drink whatever they want. It is also easier to keep your teeth clean while wearing Invisalign and the trays can be removed for special occasions. Invisalign is not the best option for all orthodontic problems, and can only be worn by teens and adults. But, it is a great option when indicated and is fully customized to your treatment plan.