Upper canine is important because it protects and maintains the stability of the dental arch and also, joins the anterior with the posterior teeth. The incidence of impaction of impaction of upper canine is the second most frequent next to the
third
molar because it takes a long period of time to develop, and has a complicated path of eruption, and erupts lately. After the age of 10, clinical and radioglaphic examination can be used in revealing the possibility of impaction ad efforts should
be put
to reducethe side effects.
To prevent impaction, selective extraction of primary canine at the age of 8 to 9 could be onsidered and prolonged retention of primary canine in oral cavity should be avoided at this time. Once the impaction is iden, the first stage of the
treatment is
to lcocalize the lesion by radiographic examination and According to the severity, orthodonitic traction or autotransplantation should be considered and comprehensive diagnosis and treatment plan of malocclusion should be established. Generally,
labial
impaction is due to arch length discrepancy and pal;atal impaction is due to malposition or morphologic pathosis of lateral incisors rather than arch length discrepancy. In surgical procedure, peridontal problems should be considered and the
minimum
amount of bone and soft tissue shold be reduced and direct bonding method of many attachment methods should be recommended. Especially in traction of labially impacted canine, it should be guided to erupt through the keratinized zone and proper
forced
magnitude should be applied. The importance of periodontal conditiopn should always be in mind following the patient education to mintain the good oral hygiene at each stage of treatment. Properly managed impacted canine can provide function and
esthetic by proper diagnosis and treatment if extraction of canine is not indicated.
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