Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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Ratio and Rate of Induced Root Growth in Necrotic Immature Teeth

재생근관치료로 유도된 미성숙 치근 성장의 속도와 비율

  • Sang, Eun Jung (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Song, Ji-Soo (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Shin, Teo Jeon (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Kim, Young-Jae (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Kim, Jung-Wook (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Jang, Ki-Taeg (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Lee, Sang-Hoon (Department of Pediatric Dentistry, School of Dentistry, Seoul National University) ;
  • Hyun, Hong-Keun (Department of Pediatric Dentistry, School of Dentistry, Seoul National University)
  • 상은정 (서울대학교 치의학대학원 소아치과학교실) ;
  • 송지수 (서울대학교 치의학대학원 소아치과학교실) ;
  • 신터전 (서울대학교 치의학대학원 소아치과학교실) ;
  • 김영재 (서울대학교 치의학대학원 소아치과학교실) ;
  • 김정욱 (서울대학교 치의학대학원 소아치과학교실) ;
  • 장기택 (서울대학교 치의학대학원 소아치과학교실) ;
  • 이상훈 (서울대학교 치의학대학원 소아치과학교실) ;
  • 현홍근 (서울대학교 치의학대학원 소아치과학교실)
  • Received : 2017.08.18
  • Accepted : 2017.11.15
  • Published : 2018.05.31
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Abstract

The purpose of this study was to analyze the ratio and rate of apical closure when inducing root growth of necrotic immature permanent teeth using alternative triple antibiotics. 24 permanent teeth in the treatment group and 27 premolars in the control group were retrospectively studied using periapical radiographs for more than 300 days after the first visit. The difference in the growth rate between the two groups was statistically compared using the Mann-Whitney test at a significance level of 0.05. There were no statistically significant differences between the two groups in the first month and during months 1 - 3, 3 - 6, and 6 - 12. After 12 months, the cumulative rate of decrease in the apical foramen width in the treatment group was 50.59% and that in the control group was 71.82%, which revealed a significant difference between the two groups. There were significant differences in the rates of decrease in the apical foramen width after 3, 6 months, and later period in the treatment group, respectively. The cumulative rate of increase in the root dentin area presented no statistically significant differences between the treatment group and control group during the entire period of examination.

괴사된 미성숙 영구치의 치수치료에 있어서 치근단형성술의 대안으로 제안된 재생근관치료는 근관내 살균을 통해 치근단의 성장을 유도하여 치근상아질 두께를 증가시키고 치아의 치관-치근 비율을 유리하게 하여 치아의 파절 가능성을 낮추는 장점이 있다. 본 연구는 미성숙 영구치에 metronidazole, ciprofloxacin, cefaclor의 복합 항생제를 적용한 후에 방사선 사진상에서 나타난 치근 성장 양상을 치근 상아질의 면적 변화와 치근단공의 내측 폭경 변화의 측면에서 장기적으로 관찰하였고, 정상 소구치의 치근 성숙 양상과 비교 분석하고자 하였다. 치료군은 24개의 영구치를 대상으로 하였고 대조군은 27개의 소구치를 대상으로 하였다. 두 군간의 성장 속도 차이는 Mann-Whitney test로 검정하였다. 두 군은 첫 1개월 내, 1 -3개월 내, 3 - 6개월 내, 6 - 12개월 내에서는 치근단 폭경 감소 비율에 통계적으로 유의한 차이가 없었다. 12개월 뒤 치료군에서 치근단공의 내측 폭경은 치료 시작 시기보다 50.59% 감소하여 대조군의 71.82%와 통계적으로 유의한 차이가 발생하였다. 치료군에서의 치근단 폭경 감소비율은 3개월, 6개월, 6개월 이후에서 모두 유의한 차이가 있었다. 치근 상아질의 면적 증가율은 모든 정기 검진 시기에서 치료군과 대조군간의 통계적으로 유의한 차이가 나타나지 않았다.

Keywords

References

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