For mild to moderate orthodontic problems, Invisalign is also a great option. Invisalign is great for correcting simple alignment issues. Invisalign is ideal for the working adult who does not want to have braces or just needs minor retreatment after having relapse from previous treatment done as a child. It consists of a series of trays that are worn for two week intervals. They can be taken out while eating and brushing, which makes keeping your teeth clean much easier.