대한소아치과학회지 (Journal of the korean academy of Pediatric Dentistry)

  • 제47권3호
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  • Pages.337-343
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  • 2020
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  • 1226-8496(pISSN)
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  • 2288-3819(eISSN)
대한소아치과학회 (Korean Academy of Pediatric Dentistry)
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Molar-Incisor Malformation 환자의 유치열 내 전반적인 치수석 관찰의 증례 보고

Generalized Pulp Stones of Primary Dentition in a Patient with Molar-Incisor Malformation : A Case Report

  • 이동연 (단국대학교 치과대학 소아치과학교실) ;
  • 신지선 (단국대학교 치과대학 소아치과학교실)
  • Lee, Dongyun (Department of Pediatric Dentistry, College of Dentistry, Dankook University) ;
  • Shin, Jisun (Department of Pediatric Dentistry, College of Dentistry, Dankook University)
  • 투고 : 2020.07.11
  • 심사 : 2020.07.21
  • 발행 : 2020.08.31
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초록

Molar-incisor malformation(MIM)은 최근 발견된 새로운 형태의 root anomaly로 제1대구치 및 제2유구치의 짧거나 미약한 치근 발달과 협착된 치수강, 그리고 cemento-enamel junction 높이에 석회화물질의 존재를 특징으로 한다. 이 증례는 MIM 이환 환자에서 유치열 전반에 걸쳐 치수강 내를 거의 가득 채우고 있는 free pulp stone을 방사선학적으로 확인할 수 있었다. 발치된 환자의 하악 제1대구치와 상악 제2유구치를 대상으로 micro-computed tomography(micro-CT) 촬영 및 scanning electron microscope-energy dispersive X-ray spectrometer 분석을 시행하였다. Micro-CT 영상을 통해, 하악 제1대구치의 치관 외부로 연결된 부근관의 존재가 확인되었다. 이것은 MIM 이환 치아에서 근관치료의 불량한 예후의 원인이 될 수 있을 것으로 사료된다.

Molar-incisor malformation (MIM) is a new type of root anomaly reported recently. The characteristics of MIM are dysplastic root formations, constriction of pulp chambers and presence of calcified matrices at the level of cementoenamel junction in permanent first molars and primary second molars. In some cases, permanent maxillary incisors are also affected. The permanent first molars of the patient in this case report were affected with MIM. Generalized pulp stones were observed in overall primary dentition. Micro-computed tomography (micro-CT) imaging and scanning electron microscope-energy dispersive X-ray spectrometer analysis were performed on the extracted mandibular first molar and maxillary primary second molar of the patient. Micro-CT images revealed the discontinuity of enamel directly connected to an accessory canal of the root.

키워드

참고문헌

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