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TREATMENT OF BILATERAL ECTOPIC ERUPTION OF THE FIRST PERMANENT MOLARS

양측성 제1대구치 이소맹출 치료의 치험례

  • Oh, Mee Hee (Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University) ;
  • Lee, Soo Eon (Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University) ;
  • Choi, Sung Chul (Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University) ;
  • Kim, Kwang Chul (Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University) ;
  • Choi, Yeong Chul (Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University) ;
  • Park, Jae-Hong (Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University)
  • 오미희 (경희대학교 치과대학 소아치과학교실) ;
  • 이수언 (경희대학교 치과대학 소아치과학교실) ;
  • 최성철 (경희대학교 치과대학 소아치과학교실) ;
  • 김광철 (경희대학교 치과대학 소아치과학교실) ;
  • 최영철 (경희대학교 치과대학 소아치과학교실) ;
  • 박재홍 (경희대학교 치과대학 소아치과학교실)
  • Received : 2012.09.10
  • Accepted : 2012.12.07
  • Published : 2013.02.28

Abstract

Ectopic eruption of the first permanent molar is an abnormal positioning of this tooth, causing a premature resorption of the distal surface of the second primary molar. It occurs in approximately 3~4% of the population and the maxillary arch is usually affected. While 66% of ectopically erupting permanent molars are corrected spontaneously without treatment (i.e. a reversible type), active treatment is necessary for irreversible ectopic eruption cases. The treatment modalities have been divided into two categories: interproximal wedging and distal tipping. Interproximal wedging is indicated for minimal impaction and when the impaction is severe, distal tipping techniques are required. Although much has been written about treatment modalities on unilateral ectopic eruption of the first permanent molar, few reports mention bilateral ectopic eruption cases. In this report, two cases of bilateral ectopic eruption of the first permanent molars in young patients are presented. We describe the use of a modified bilateral Halterman appliance for correction of these cases and the clinical results were satisfactory.

제1대구치의 이소맹출은 치아가 비정상적 위치로 맹출하는 경우를 말하며 이 경우 제2유구치 원심면의 비정상적 조기흡수를 야기한다. 제1대구치의 이소맹출은 인구의 3~4% 정도에서 나타나며 주로 상악에서 호발한다. 이소맹출한 치아의 66% 정도는 별다른 치료 없이 자발적으로 맹출 경로를 개선하는데 반해 비가역적 이소맹출의 경우에는 능동적 치료가 필요하다. 치료 방법은 크게 두 가지로 나눌 수 있다: 치간이개와 원심경사. 치간이개는 매복 정도가 최소인 경우 시행할 수 있으며, 매복이 심한 경우에는 원심경사가 필요하다. 현재까지의 대부분의 보고들은 편측성 이소맹출의 치료방법에 대해 다루었으며 양측성 이소맹출의 치료에 관한 보고는 많지 않다. 본 증례들은 양측성 제1대구치 이소맹출을 보이는 환아들로 modified bilateral Halterman appliance를 이용하여 양호한 치료결과를 얻었기에 이를 보고하는 바이다.

Keywords

References

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  1. Predictive Factors of Ectopic Eruption of the Maxillary First Permanent Molar vol.43, pp.3, 2016, https://doi.org/10.5933/JKAPD.2016.43.3.284