Journal of dental hygiene science (치위생과학회지)

The Korean Society of Dental Hygiene Science (한국치위생과학회)
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The Effect of 15% Carbamide Peroxide on the Surface Roughness and Staining of Esthetic Restoratives

15% Carbamide Peroxide가 심미수복재의 표면조도와 착색에 미치는 영향

  • Kim, Soo-Hwa (Department of Dental Hygiene, Hanyang Women's University) ;
  • Choi, Hye-Sook (Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry) ;
  • Roh, Jj-Yeon (Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry) ;
  • Kim, Kwang-Mahn (Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry)
  • 김수화 (한양여자대학교 치위생과) ;
  • 최혜숙 (연세대학교 치과대학 치과생체재료공학교실) ;
  • 노지연 (연세대학교 치과대학 치과생체재료공학교실) ;
  • 김광만 (연세대학교 치과대학 치과생체재료공학교실)
  • Published : 2013.06.30
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Abstract

The purpose of this study was to evaluate the surface change after 15% carbamide peroxide home bleaching to various restorative materials (composite resin [CR], resin modified glass ionomer [RMGI] and glass ionomer [GI]) and to observe the effect of surface condition of the materials on re-staining. Three esthetic restorative materials (Filtek Z250, 3M, USA; Fuji II LC, GC, Japan; Fuji II, GC, Japan) were used in this study. Twenty specimens per material group were made and divided into two groups (bleached and control). The specimens were immersed in coffee after applying bleaching agent. The color change and surface roughness were measured before and after bleaching and after immersion in coffee. The data were analyzed with SPSS 18.0. The results were as follows: 1. The color of all experiment groups was significantly changed after bleaching (p<0.05). RMGI was the greatest value of ${\Delta}E^*$ and ${\Delta}L^*$. GI and CR groups were in ordering (p<0.05). The ${\Delta}a^*$ value was decreased GI, RMGI and CR. RMGI was only significantly decreased in ${\Delta}b^*$ value (p<0.05). 2. The surface roughness before and after bleaching was significantly different on CR, RMGI and GI (p<0.05). 3. After staining with coffee, the value of ${\Delta}E^*$ was increased in GI, RMGI and CR, furthermore GI and RMGI showed significant difference in the bleaching groups (p<0.05). The ${\Delta}L^*$ value of GI and RMGI was significantly decreased. 4. The change of surface roughness after staining was not significantly different in all groups (p>0.05). The maintenance of color stability in esthetic restorations is one of the most important properties. Tooth whitening is for the aesthetic. Therefore, dental professionals should notice to patients about re-staining after tooth whitening. They should give an instruction that how to prevent and which kinds of agents could be stained.

본 논문은 미백 후 수복재의 종류에 따른 표면변화를 관찰하고, 미백제에 의한 표면변화가 수복재의 착색감수성에 미치는 영향을 조사하기 위하여 자가미백제로 널리 사용되는 15% carbamide peroxide가 대표적인 심미수복재인 콤포지트 레진(composite resin, CR), 레진강화형글라스아이오노머(resin modified glass ionomer, RMGI), 글라스아이오노머(glass ionomer, GI)의 표면에 미치는 영향을 분석하였다. 또한, 미백 후의 착색감수성을 평가하기 위하여 커피용액에 일정 시간 보관한 후 수복재의 색 변화를 비교하여 다음과 같은 결과를 얻었다. 1. 미백 전과 미백 후의 색변화에서는 실험에 사용된 모든 재료에서 ${\Delta}L^*$, ${\Delta}a^*$, ${\Delta}b^*$, ${\Delta}E^*$값이 통계적으로 유의하게 나타났다(p<0.05). ${\Delta}E^*$와 ${\Delta}L^*$값은 RMGI, GI, CR 순으로 색변화가 많이 나타났고(p<0.05), ${\Delta}a^*$값은 GI, RMGI, CR 순으로 미백 후 감소하였으며, ${\Delta}b^*$값은 RMGI에서 유의하게 감소하였다(p<0.05). 2. 미백 전과 미백 후 표면조도는 CR, RMGI, GI 모두 미백 전과 후에 유의한 차이를 나타내었는데 RMGI가 미백 후 가장 큰 차이를 보였다(p<0.05). 3. 실험군과 대조군을 커피 용액에 착색시킨 후의 ${\Delta}E^*$값은 GI, RMGI, CR 순으로 크게 나타났으나 GI와 RMGI에서만 유의한 차이를 보여 미백을 한 실험군의 색 변화가 유의하게 높게 나타났다(p<0.05). ${\Delta}L^*$값은 GI와 RMGI의 경우 유의한 차이를 보여 미백을 하고 착색한 경우 명도가 더욱 감소하는 것으로 나타났고, ${\Delta}a^*$값보다 ${\Delta}b^*$값의 증가가 훨씬 더 크고 뚜렷하였다. 4. 커피 용액 착색에 따른 시편의 표면 변화는 CR, RMGI, GI 모두 착색 전과 착색 후에 유의한 차이를 나타내지 않았다(p>0.05). 심미수복재의 색안정성은 심미성을 유지하는 중요한 요인이고, 치아미백 또한 심미를 목적으로 하는 술식이다. 따라서 치과에서는 수복재의 종류에 따라 미백제나 착색물에 대한 반응이 다르게 나타날 수 있다는 것을 고려해야 하며, 술식을 제공받는 내원자들이 착색을 야기할 수 있는 음식이나 음료에 대해 인지하고 예방할 수 있도록 해야 할 것이다.

Keywords

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