Orthodontic terms starting with Z

Dental arch – The line along which the teeth of a jaw are arranged. Crowding

Malocclusion – Any deviation of the teeth from their regular position in the arch or in relation to the opposing jaw. Dysgnathia Orthodontics

Brace – Collective term for all appliances that move teeth – fixed or removable. Fixed brace Aligner

Tooth migration – Teeth tilt or slide into a gap. This is why a gap is rarely simply left open. Space maintainer Relapse

Tongue thrusting – The tongue presses against the front teeth when swallowing and pushes them apart. Open bite Myofunctional therapy