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J Korean Acad Pediatr Dent. 2012;39(4): 404-411.
Hye-Lim Lee, Kwang-Hee Lee, Ji-Young La, So-Youn An, Yun-Hee Kim, Hwa-Shin Lim, Je-Woo Lee
Department of Pediatric Dentistry, College of Dentistry, Wonkwang University
Corresponding Author: Kwang-Hee Lee ,Tel: 018-618-6562, Email: kwhlee@wonkwang.ac.kr
Received: September 24, 2012;  Accepted: October 25, 2012.
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Tooth impaction is defined as a failure of tooth eruption resulting from the physical obstacles in the eruption path or the abnormal position of the tooth germ. Impaction of mandibular second molar is relatively rare, and it may incite pathologic conditions such as dental caries, periodontitis, or root resorption of adjacent first molar. Thus, early diagnosis and treatment is recommended. In the first case, a 10-year-old male patient, was treated by brass wire to separate the bilaterally impacted mandibular second molars. In the second case, a 12-year-old female patient, was treated with Humphrey appliance for impacted mandibular left second molar, which was detected during a periodical dental examination. In the third case, a 17-year-old female patient with impacted mandibular right second molar, was treated by uprighting spring with mini-implant anchorage around premolar area. In the last case, an 18-year-old male patient, was treated with mini-implant placed on the ramus of mandible connected to the orthodontic buttons bonded on impacted mandibular left second molar by elastic thread.
Keywords: Impaction | Mandibular second molar | Brass wire | Humphrey appliance | Mini-implant
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