Correctly aligned jaws and straight teeth have several practical advantages. Cleaning is easier, reducing the risk of gum disease and cavities; there's less wear on teeth, reducing the risk of fracture; your bite is improved, reducing the risk of problems with speaking, chewing and swallowing. Also, straight teeth look good, helping you feel positive about your appearance and yourself.
It's best to start young; children will always benefit from regular dental developmental checks. But it's also never too late to correct misalignment; some estimates suggest that more than 50% of adults could benefit from some type of orthopaedic or orthodontic treatment.
In particular, treatment might help if you have any of these symptoms: