A child with malocclusion has crowded or crooked teeth. He or she may also have 1 of these bite problems:

• Overbite. The front teeth in the upper jaw stick out over the teeth in the lower jaw.
• Underbite. The teeth in the lower jaw stick out over the teeth in the upper jaw.
• Open bite. The front teeth don’t meet when the jaw is closed.
• Crossbite. The top teeth sit behind the bottom teeth.

  Malocclusion may cause a child to have:

• Problems eating or speaking
• Teeth grinding
• Loss of baby teeth too soon or very late
• Mouth breathing
• Tooth decay
• Gum disease
• Jaw joint problems