What is a habit appliance?
Habit appliances, also known as habit breaking appliances, bluegrass appliances, tongue cribs, thumb cribs, or palatal cribs, are specialized dental appliances that are used to break detrimental dental habits in children. Most commonly, habit appliances are used to discontinue behaviors such as finger or thumb sucking.

What is habit breaking appliance?
A habit-breaking appliance for thumb sucking or tongue thrusting is made of thin, metal wire. It's bonded to the back molars and goes behind the teeth so that it's not visible when your child smiles. It also doesn't interfere with eating