Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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Effects of Children's Drinks on the Color Stability of Strip and Zirconia crown

어린이 음료수가 레진관과 지르코니아 기성관의 색조에 미치는 영향

  • Jeong, Ilyong (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Yi, Seoksoon (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Lee, Haney (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) ;
  • Yang, Yeonmi (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)
  • 정일용 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 이석순 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 이한이 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 이대우 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 양연미 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 김재곤 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소)
  • Received : 2017.03.21
  • Accepted : 2017.07.11
  • Published : 2017.08.31
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Abstract

The purpose of this study was to evaluate the effects of exposure to various children's drinks on the color stability of anterior primary teeth and different esthetic restorative materials clinically used in pediatric dentistry. Exfoliated maxillary primary central incisors that had been unaffected by caries were chosen as control group. Maxillary primary central incisor-shaped specimens made of strip crown and Nu-smile zirconia crowns were chosen as test groups. Polished strip resin crowns were additionally prepared to compare with unpolished strip resin crown. Each specimen and teeth were divided into 4 groups in which the test samples (n=5 each) were immersed in 4 different drinks (distilled water, cola, grape juice, jelly juice) for 6 days. In all 4 drink groups, all specimens generally showed increasing ${\Delta}E^*$ value (color difference) with time. Polished resin strip crown had higher ${\Delta}E^*$ value than the unpolished in cola, grape juice and jelly juice groups. ${\Delta}E^*$ value of zirconia crown in cola, grape juice and jelly juice groups were significantly different (p < 0.05). In conclusion, dietary control of children's drinks is required for preventing discoloration of restorative materials.

이 연구는 유전치와 그 심미 수복에 사용되는 전장관의 어린이 음료수에 대한 색조 안정성을 평가하였다. 우식 및 변색 없이 자연 탈락된 20개의 상악 우측 유중절치와 상악 우측 유중절치 모양의 resin strip crown 40개 및 Nu-smile zirconia crown 20개를 대상으로 하였다. 복합 레진의 연마 여부에 따른 색조 안정성을 비교하기 위해 40개의 resin strip crown 중 20개는 $Sof-lex^{TM}$ Contouring and Polishing Discs를 이용하여 연마하였다. 이 후 각각의 시편을 5개씩 나누어 증류수, 콜라, 포도주스, 젤리주스에 6일간 담갔다. 그 결과 네 음료수 군에서 모든 시편의 색조 변화가 있었으며, 연마한 resin strip crown은 연마하지 않은 군에 비해 색조 변화가 컸고 콜라, 포도주스, 젤리주스에서 통계적으로 유의하였다(p < 0.05). Zirconia crown의 경우 포도주스와 콜라에서의 색조 변화 값은 통계적으로 유의하지 않았으나 젤리주스와 나머지 두 음료수 사이에서는 유의하였다(p < 0.05). 따라서 소아 유전치 수복에 사용하는 수복재료들도 어린이 음료수에 노출될 경우 색조 변화가 있을 수 있으므로 어린이 음료수에 대한 식이 조절이 필요하다.

Keywords

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