Cuspid protected occlusion

Natural teeth wear over time and the loss of enamel tooth structure may ultimately expose the dentin , causing tooth sensitivity. The reason for tooth wear are many.

Age – related wear is normal, whereas pathologic wear may result from parafunction as clenching and grinding. The purpose of canine guidance and canine protective occlusion is to disocclude the anterior and posterior teeth, as canine wear progresses the posterior teeth begin to contact in lateral movement and are more prone to symptoms of tooth overload.

The anterior teeth ( specially the laterals) can also become notched and worn.

Improving canine guidance will protect posterior teeth and prevents incisal edges of front teeth from breaking or chipping.

A supportive nightguard is recommended to protect restored dentition.

Cuspid Rise or
Cuspid protected occlusion.

Should I be concerned
-Yes! – If you see wearing of the enamel of incisal edges of your front teeth.

-19 years old patient noticed wearing of the edge of her right front central tooth.

Slanted edge of right central.

Lack of proper contracts of upper and lower cuspids during lateral movements of lower jaw to the right and left side. Central and lateral are touching.

Composite build-up on upper right cuspid and lower left cuspid allowed proper separation of upper and bottom teeth in lateral movement of the lower jaw. Upper central restored.

After compromised orthodontic treatment

No contact on cuspids
incisal edge worn down

X-Bite correction without orthodontic treatment

Upper right cuspid is in X-bite with lower cuspid. Lack of cuspid protected occlusion lead to damaging of front teeth.
The first step to restore smile is to rebuild cuspid, so the incline plane of this tooth will dissipate forces of chewing away from the front teeth.

Finally lateral and central incisors can be restored by using bonding and composite material. The Night guard was fabricated to protect teeth from grinding at night.

Seven years after the restoration. The bite and esthetic are very good!
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