Different Bites

  

Ideal

All the teeth contact each other properly in the correct vertical and horizontal relationship.

Posterior Crossbite

Posterior crossbites usually result from a constricted upper jaw or unusually wide lower jaw. A narrow upper jaw will often force a patient to move their lower jaw forward or to the side so that they are able to find a stable bite. When closed into this accommodated position, the lower teeth are located outside the upper

        

Anterior Crossbite

Anterior crossbites usually arise from excessive crowding. As there is insufficient space for the tooth to erupt into its ideal position, the tooth will find another place to come in. An anterior crossbite can result from an upper tooth positioned closer to the palate or a lower tooth positioned toward the lower lip.


Underbite

When the lower front teeth are positioned in front of the upper teeth an underbite is present. This can result from dental (reverse positioning of the teeth) or skeletal (discrepancy of jaw sizes) reasons, or a combination of both.

 

Abnormal Eruption

A tooth erupts into an abnormal place as it is inhibited from growing into its proper position. This typically results from retained primary (baby) teeth which have not exfoliated (come loose and fall out) as it normally would or from excessive crowding.

Crowding

Crowding of the teeth is the most common orthodontic problem. Although many factors contribute to dental crowding, this problem is usually inherited and stems from a discrepancy between available space in each jaw and the size of the teeth. Aside from aesthetic considerations, poor alignment of teeth may be associated with periodontal problems and an increased risk of dental decay due to difficulty in maintaining optimal oral hygiene.

Deepbite

Excessive vertical overlapping of incisor teeth, called “overbite”, is generally found in association with a discrepancy between the length of the upper and lower jaws. It usually results in excessive eruption of either the upper or lower incisors or both. Associated problems may include excessive display of gum tissue, biting the roof of the mouth and incisor wear.

Openbite

A lack of vertical overlap of the incisor teeth can usually be traced to jaw disharmony or persistent habits (i.e. digit sucking habits or posturing of the tongue between the front teeth) or excessive vertical growth of one or both jaws. In these situations, the front teeth do not overlap at all. Early assessment and intervention with these disorders is critical to the overall success of treatment.

Spacing

Spaces between teeth are another common problem associated with the need for orthodontic care. Like crowding, spacing may be related to a tooth-to-jaw-size disharmony. Incisor protrusion and fremuns (gum tissue attachments that connect the lips to the jaws) are also a common causes of spacing between the upper front teeth. Other contributing factors include atypical or unusually narrow teeth, and missing or impacted teeth.

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