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KMID : 0358920090360040613
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Journal of the Korean Academy of Pedodontics
2009 Volume.36 No. 4 p.613 ~ p.618
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ORTHODONTIC TRACTION OF IMPACTED POSTERIOR TEETH : CASE REPORTS
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Maeng Yu-Jin
Oh So-Hee
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Abstract
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Impacted molars are not usual with the prevalence rate of less than 1%, however problems such as infraocclusion, extrusion of the opposite tooth and lack of space are caused. If molars are impacted, radiographic check-up and observations are needed as they play an important role in skeletal development and mastication. Causes of impaction are underdevelopment of roots, supernumerary teeth, cysts, odontomas, ankylosis and etc. In our first case, we present impacted molar which was surgically exposed and orthodontically tracted. As the developmental state of the root was less than half at first visit, we observed until the root was 2/3 in its length and traction was carried out. The second case is orthodontic tracted molar with compleate enucleation of the existing cysts. When tracting impacted molars, direct bonding of attachments to the tooth and light continuous forces are recommended so as to ankylosis, external absorption and periodontal attachment loss avoid. Fixed appliances tract the teeth on arch and obtain eruption spaces without patient’s cooperation. We report surgically exposed and orthodontically tracted molars which resulted in good occlusion and patient’s satisfaction.
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KEYWORD
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Impacted teeth, Orthodontic traction, Cyst
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