Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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Prevalence and Etiology of Molar Incisor Hypomineralization in Children Aged 8 - 9 Years

8 - 9세 어린이의 Molar-Incisor Hypomineraization의 원인 및 유병률에 대한 조사연구

  • Kim, Taehyoung (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Jeong, Ilyong (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Lee, Daewoo (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Kim, Jaegon (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Yang, Yeonmi (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University)
  • 김태형 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 정일용 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 이대우 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 김재곤 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 양연미 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소)
  • Received : 2016.05.13
  • Accepted : 2016.07.07
  • Published : 2016.11.30
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Abstract

This study examined the prevalence of MIH and severity of hypomineralization exhibited by MIH-affected tooth based on the clinical examination of 950 children between age 8 and 9 in the city of Jeonju. The etiology was also studied utilizing a questionnaire on the MIH risk factors. The prevalence of MIH was 7.1%. The examined MIH-affected teeth showed statically significant difference in the degree of their hypomineralization (p < 0.05). The permanent first molar showed greater frequency of MIH compared to the permanent incisor, and the MIH code 2a and 3 were only observed in the permanent first molar (p < 0.05). From the questionnaire, showed the significant relationship between the occurrence of MIH and risk factors such as stress and antibiotics intake during pregnancy, low birth weight and events like hospital admission, frequent respiratory infection, high fever and long-term antibiotics intake within the three years of children's lives (p < 0.05). Among all the possible risk factors, the antibiotics intake during pregnancy only showed high correlation with the incidence of MIH (p < 0.05).

본 연구는 전주시 8 - 9세 어린이 950명을 대상으로 임상 검사를 통해 MIH 유병률과 MIH 증상을 보이는 치아의 저광화 정도 및 상태에 대해 알아보았으며, MIH 위험 요인에 관한 설문조사를 통해 병인을 조사하였다. MIH 유병률은 7.1%였으며, 이환된 치아의 저광화 정도는 통계적으로 유의한 차이를 보였다(p < 0.05). 제1대구치가 절치에 비해 이환 빈도가 높았으며, 특히 MIH code 2a와 3은 제1대구치에서만 관찰되었다(p < 0.05). 위험 요인에 대한 설문조사에서는 산모의 스트레스와 항생제 복용, 출생 시 저체중과 출생 후 3년 이내의 입원 경력, 빈번한 호흡기 감염, 고열 그리고 항생제의 장기간 복용이 MIH와 유의한 관련성을 보였다(p < 0.05). 위험 요인들 상호간의 관련성은 임신기간 동안 항생제를 복용한 경우에서만 높은 연관성을 보였다(p < 0.05).

Keywords

References

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