Well if it's about straightening your teeth, preventing cavities from forming, or achieving the perfect smile, clear aligners are the perfect solution for all. If you are unable to close your mouth at night, you can use clear aligners to solve that problem. It doesn't matter how old you are; you can still have that bright smile on your face. Gaps in teeth or overbites of teeth can be fixed with teeth straightening kits which are available online as well.