Crossbite can occur in the front and/or the sides of the mouth. One or more upper teeth bite on the inside of the lower teeth. This can occur with a single tooth or multiple teeth. Early correction of crossbite is recommended.

Crossbite should be corrected because it can:

• cause premature wear of the teeth
• cause gum disease including bone loss
• cause asymmetrical development of the jaws
• cause dysfunctional chewing patterns

This is what an Anterior crossbite looks like:

If there is a single tooth crossbite, the tooth can be moved with limited braces into the correct position. When multiple teeth in crossbite, the upper jaw is usually too narrow and needs to be widened. This is done with a fixed appliance called a palatal expander.

	Openbite Openbite is an insufficient vertical overlap of the front teeth. It is caused by oral habits such as tongue thrust, thumb or finger sucking, or when the jaws don't grow evenly. Timing of treatment is critical to the overall success of the therapy.
	This is what an openbite looks like: Openbite
		How can an openbite be orthodontically corrected? Openbite can be corrected through growth modification of the jaws using braces; extrusion of the front and anterior teeth; and in some cases surgical correction of the jaws. Also, breaking oral habits such as thumb or finger sucking, will facilitate the correction of an openbite.

	Overbite Overbite occurs when the upper front teeth protrude over the lower front teeth. Generally there is no contact between the upper and lower front teeth. Often you cannot see the lower incisors. Overbite is due to a disproportionate amount of eruption of front teeth, or over development of the bone that supports the teeth, and a front to back discrepancy in the growth of the upper or lower jaw (Class II Relationship). Overbite is also known as a deep bite. Overbite should be corrected because it can:
	Overbite should be corrected because it can: cause improper functioning of your front teeth result in the lower front teeth biting into the gum tissue of the upper palate leading to tissue problems. cause unusual wear of the lower front teeth This is what overbite looks like: Overbite How can an overbite be orthodontically corrected? Overbite can be corrected through moving the front teeth with braces up and/or bringing the back teeth together, which will "open" the bite so the teeth are properly aligned and the deep bite is eliminated.

	Overjet Overjet is also known as protrusion. It is where the lower teeth are too far behind the upper front teeth. This can be caused by an improper alignment of the molars ; a skeletal imbalance of the upper and lower jaw; flared upper incisors; missing lower teeth; or a combination of all the above. In addition, oral habits such as thumb or finger sucking or tongue thrusting can exacerbate the condition.
	Overjet should be corrected because it can: prevent proper functioning of the front teeth lead to premature wear
	This is what overjet looks like: Overjet How can overjet be orthodontically corrected? Overjet can be corrected through growth modification using a functional appliance and/or braces with elastics to change the relationship of the upper and lower jaws.

Underbite Class III Underbite The lower teeth protrude past the front teeth. An underbite is usually caused by undergrowth of the upper jaw, overgrowth of the lower jaw, or a combination of the two (Class III Relationship). Underbite can also be caused by retruded upper incisors, missing or small upper teeth or a combination of all the above. Early correction of underbite is recommended. Underbite should be corrected because it can: prevent proper functioning of the front teeth or molars which can lead to premature wear of the teeth cause chewing or eating problems This is what underbite looks like: Underbite How can an underbite be orthodontically corrected? Underbite can be corrected through growth modification of the jaws; extraction of teeth; and in some cases surgical correction of the jaws.