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Enamel defects
What is enamel?
Enamel is a non-living dental structure on the outside of the teeth with no blood or nerve supply. The clear advantage from the lack of nerve supply is enamel's insensitivity. Enamel insensitivity allows the pet to eat or drink hot or cold items without pain or discomfort. The lack of blood supply results in the disadvantage of enamel's inability to repair defects or heal from injury.
What is an enamel defect?
Enamel is the hardest structure of the body and serves a protective mechanism for teeth. Enamel defects may occur during tooth development, from traumatic injury, from microbial (bacterial) degredation (cavity formation) or a combination of these factors.
Why are enamel defects important?
Defects of the enamel expose the underlying dentin. Dentin is sensitive, has blood and nerve supply and has some ability to repair. Dentin has small tubules that contain nerves and project from the pulp out to the enamel. When enamel is missing, these tubules become exposed and can result in sensitivity. Some animals with enamel defects can be very sensitive or painful. Exposed dentin tubules also allow bacterial penetration, tooth pulp infection, inflammation, pain and death.
The consequence of unaddressed dead teeth can lead to systemic spread of bacteria (through the bloodstream) for major organs such as the heart, kidney and the liver.
Enamel defects typically result in tooth discoloration form both dentin repair and from calculus (tartar) accumulation.
How are enamel defects treated?
Enamel defects are initially evaluated with periodontal probing and with dental radiographs to understand the extent of the problem. The depth of the defect is important. If the defect involves enamel or enamel and dentin, these teeth may be restored. If the defect has affected the pulp (inside of the tooth), root canal therapy with restoration may be appropriate. Dental extraction is an alternate treatment for teeth with enamel defects.
Clinical photos of enamel defects.
Enamel defect caused by trauma during
dental extraction of the primary canine tooth.
Enamel defect caused by trauma from
two dogs playing "tug of war".
Developmental enamel defect.
Enamel defect from playing "frisby".
Enamel defect of unknown cause.
Deep enamel defect from cavity formation.
Close up of the above enamel defect.
Discolored Teeth
Important PeopleDog Dental Care
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