Crossbite

Crossbite is a dental disorder in which the upper teeth fit inside the lower teeth as the jaw closes. It can affect one or more teeth and occur in either the front (anterior crossbite) or back (posterior crossbite) of the mouth. Heredity, extended thumb sucking, uneven jaw growth, or delayed removal of infant teeth can cause crossbites.
Symptoms and effects
People with a crossbite may have trouble chewing, jaw pain, uneven tooth wear, and speech problems. If left untreated, it can cause TMJ issues, gum recession, and facial asymmetry.
Treatment Options:
Early identification and treatment can help prevent problems. Orthodontic treatments such as braces, clear aligners, and palatal expanders can help correct the misalignment.

Prevention and care
Parents should watch their child's dental development and contact an orthodontist if they observe any misalignment. Practicing proper oral hygiene and seeking prompt treatment can improve dental health and prevent long-term problems.
If you suspect a crossbite, see a dentist for a tailored treatment plan to restore a healthy, functioning bite.