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교합고경 증가로 발생한 전치부 공간을 자연 폐쇄시켜 새롭게 유도한 전방유도: 증례 보고

New anterior guidance induction through spontaneous gap closure after an increase in vertical dimension: a case report

  • 남정현 (분당서울대병원 치과보철과) ;
  • 김종희 (분당서울대병원 치과보철과) ;
  • 이양진 (분당서울대병원 치과보철과)
  • Jung Hyun Nam (Department of Prosthodontics, Seoul National University Bundang Hospital) ;
  • Jong-Hee Kim (Department of Prosthodontics, Seoul National University Bundang Hospital) ;
  • Yang-Jin Yi (Department of Prosthodontics, Seoul National University Bundang Hospital)
  • 투고 : 2023.06.18
  • 심사 : 2023.07.28
  • 발행 : 2023.09.30

초록

구치부 교모나 소실로 인해 발생하는 교합붕괴에서는 수복공간이 불충분하고 심미적 문제가 발생하는 경우가 많다. 이를 해결하기 위해 고경을 증가시키면, 하악이 후하방으로 회전함으로써 상하악 전치부 사이에 공간이 발생하여 전방유도각이 상실되는 문제점이 생긴다. 이런 이유 때문에 통상 고경 증가 후에 생긴 상하악 전치부 사이 공간은 교정을 통해 전치 치축 변화를 유도하거나 보철적 수복으로 피개하여 적절한 전방유도를 얻는 것이 일반적이었다. 그러나 구치부 교모나 소실 후 발생한 전치 과개교합 형식은 하악이 전상방 회전하며 전치부에 교합력이 과도하게 집중되고 있는 상태이기 때문에, 교합력이 제거되면 전치는 원래의 치축으로 돌아갈 수 있을 것이라고 추정할 수 있다. 이런 사실에 착안하여 이 증례보고에서는 덜 침습적인 치료 방법을 고안, 교합 수직 고경 증가를 통한 전치부의 자연스러운 전방유도 재획득을 의도하였다. 이후 디지털 중첩 방법으로 전치부의 치축 개선을 확인할 수 있었다. 새로운 치료법의 적절한 적응증을 정의하며 임상에 적용할 수 있도록 증례보고 하는 바이다.

The bite collapses due to posterior teeth loss or wear results in inadequate space for restoration and esthetic concerns. Increasing the occlusal vertical dimension to improve space deficiency rotates the mandible posteriorly, creating a gap between the maxillary and mandibular anterior teeth, leading to loss of anterior guidance. To solve this problem, the prosthodontics or orthodontics treatments are the commonly used methods for proper anterior guidance. However, it is reasonable to assume that the anterior teeth can naturally relapse to their original position when the occlusal force is eliminated. Therefore, this case report aimed to test whether natural relapse could recover the lost anterior guidance to develop a less invasive and more convenient treatment method. Digital superimposition was used to evaluate the changes in anterior teeth alignment to confirm the change of the recovered anterior guidance. The appropriate indications for this new treatment method were defined and applied clinically.

키워드

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