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상악 제2유구치의 근심구개측 부가치근과 상악 제2소구치 사이의 연관성

The Relationship between Additional Mesiopalatal Roots of Maxillary Primary Second Molars and Premolars

이고은|김미선|최성철|남옥형|이효설|김광철|정우범
대한소아치과학회 (The Korean Academy Of Pediatric Dentistry)|2020.11|대한소아치과학회지 (Journal of the Korean academy of pediatric dentistry)|제47권 제4호|pp. 368-376|DOI https://doi.org/10.5933/JKAPD.2020.47.4.368

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키워드

Primary maxillary second molarMaxillary second premolarMesiopalatal rootAbnormal eruption pattern
주제분류치의학

초록

상악 제2유구치는 일반적으로 3개의 치근을 갖는다. 하지만 드물게 근심구개측에 부가치근이 존재할 수 있다. 이 연구의 목적은 상악 제2유구치의 근심구개측 치근과 계승 영구치인 상악 제2유구치의 비정상적인 맹출 양상과의 연관성에 대해서 알아보는 것이다. 2010년 1월부터 2018년 12월까지 경희대학교 치과병원에 내원하여 전산화 단층 방사선 사진을 촬영한 3세부터 12세 어린이 916명을대상으로 하였으며 744명의 어린이가 최종대상자로 선정되었다. 상악 제2유구치의 근심구개측 치근 발생률은 3.2%였으며 상악 제2소구치가 비정상적인 맹출 양상을 보이는 발생률은 19.2%였다. 상악 제2유구치의 근심구개측 치근이 존재할 때 상악 제2소구치가 비정상적인 맹출 양상을 보일 위험성이 상악 제2유구치가 근심구개측 치근이 없는 경우보다 약 13배 더 높았다. 상악 제2유구치에 근심구개측 치근이 존재한다면, 계승 영구치의 맹출 양상을 주의 깊게 관찰해야 하며 필요 시 치료가 개입되어야 한다.

Abstract

The primary maxillary second molars usually have three roots. However, an additional root located mesiopalatally is occasionally observed. This study aimed to determine the relationship between a mesiopalatal root of primary maxillary second molars and an abnormal eruption pattern of maxillary second premolars. The study was performed on cone beam computed tomography images taken from 916 children who visited the Dental Hospital of Kyung Hee University from 2010 to 2018. 744 serial cross-sectional cone beam computed tomography images were evaluated. The overall incidence of the mesiopalatal root of primary maxillary second molars was 3.2% (n = 24) and the abnormal eruption pattern of maxillary second premolars was 19.2% (n = 143). Especially, patients with the mesiopalatal root of primary maxillary second molars were significantly more likely to have the abnormal eruption pattern on maxillary second premolars (p = 0.000). The odds of the abnormal eruption pattern of maxillary second premolars with the mesiopalatal root of primary maxillary second molars was about 13 times higher than those without. The eruption pattern of the permanent successor should be carefully observed and treated if the mesiopalatal root of primary maxillary second molar is existent.

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관련 논문AI추천

Additional Root of the Primary Maxillary Second Molar Possibly Associated with Displacement and Rotation of the Permanent Successor : Two Case Reports구재원, 라지영, 이제우대한소아치과학회 · 대한소아치과학회지2017 · 제44권 제1호CBCT를 이용한 유구치의 치근 및 근관의 형태학적 평가김선미, 최남기, 최유민대한소아치과학회 · 대한소아치과학회지2020 · 제47권 제1호3개의 치근을 가진 하악 유구치 : 증례보고김성오, 손흥규, 송제선, 이제호, 최병재, 최형준대한소아치과학회 · 대한소아치과학회지2008 · 제35권 제1호CBCT 및 3D CT를 활용한 상악 유구치 치근과 근관 형태김영재, 김정욱, 김준희, 김현태, 송지수, 신터전, 장기택, 현홍근대한소아치과학회 · 대한소아치과학회지2021 · 제48권 제4호하악 제2소구치 결손과 연관된 치아 결손 및 발육지연김성오, 박민지, 송제선, 이제호대한소아치과학회 · 대한소아치과학회지2018 · 제45권 제4호유치열기의 융합치가 영구치열에 미치는 영향김영진, 김현정, 남순현, 서예진대한소아치과학회 · 대한소아치과학회지2017 · 제44권 제1호

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