| INTRAOSSEOUS TOOTH MIGRATION OF IMPACTED MESIODENS IN THE INVERTED POSITION |
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Suk-Woo Lee, Jae-Ho Lee, Seong-Oh Kim, Hyung-Jun Choi, Hyung-Kyu Sohn, Byung-Jai Choi |
| Department of Pediatric Dentistry and Oral Science Research Center, College of Dentistry Yonsei University |
| 상악 정중부에 역위 매복된 과잉치의 악골 내 이동 |
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이석우, 이제호, 김성오, 최형준, 손홍규, 최병재 |
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연세대학교 치과대학 소아치과학교실∙구강과학연구소 |
Correspondence:
Byung-Jai Choi, Tel: 02-2228-8800, Email: bjchoi@yuhs.ac
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Received: 15 May 2008 • Accepted: 10 September 2008 |
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| Abstract |
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Supernumerary teeth are frequently found in the anterior portion of the maxilla and develop as a result of abnormal proliferation of the dental lamina during tooth germ formation, caused by genetic or environmental factors. They may result in various complications, such as eruption interference, displacement, rotation of adjacent teeth, diastema, eruption into the nasal cavity, and development of dentigerous cyst. The optimal time for surgical extraction of supernumerary teeth has been a controversial issue. Someone prefer early surgical extraction because supernumerary teeth can cause eruption interference and displacement of adjacent teeth, eventually altering occlusion. Others prefer to delay surgical extraction until 8~10 years of age in consideration of root maturation of the adjacent teeth and also patient’s behavior. When surgical extraction of supernumerary teeth is postponed, there is possibility that impacted supernumerary teeth in the inverted or horizontal position move toward the nasal cavity, hard palate, or premolar area. When such intraosseous tooth migration is combined with the vertical growth of the maxilla, surgical approach becomes even harder. Therefore, possibility of intraosseous tooth migration should be considered as an important factor when deciding appropriate time for surgical extraction. We are presenting cases of mesiodens which showed intraosseous migration during 2~3 years of follow-up period since the first diagnosis had been made at the 6~7 years of age. |
| Key Words:
Supernumerary teeth, Tooth migration, Tooth extraction |
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