The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Adherence of Salivary Proteins to Various Orthodontic Brackets

다양한 교정용 브라켓 표면에 부착하는 타액단백질에 관한 연구

  • Ahn, Sug-Joon (Department of Orthodontics, College of Dentistry, Seoul National University) ;
  • Ihm, Jong-An (Department of Orthodontics, College of Dentistry, Seoul National University) ;
  • Nahm, Dong-Seok (Department of Orthodontics, College of Dentistry, Seoul National University)
  • 안석준 (서울대학교 치과대학 교정학교실) ;
  • 임종안 (서울대학교 치과대학 교정학교실) ;
  • 남동석 (서울대학교 치과대학 교정학교실)
  • Published : 2002.12.01
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Abstract

The principal aims of this study were to identify the composition of salivary pellicles formed on various orthodontic brackets and to obtain a detailed information about the protein adsorption profiles from whole saliva and two major glandular salivas. Four different types of orthodontic brackets were used. All were upper bicuspid brackets with a $022{\times}028$ slot Roth prescription; stainless steel metal, monocrystalline sapphire, polycrystalline alumina, and plastic brackets. Bracket pelicles were formed by the incubation of orthodontic brackets with whole saliva, submandibular-sublingual saliva, and parotid saliva for 2 hours. The bracket pellicles were extracted and confirmed by employing sodium dodecyl sulfatepolyacrylamide gel electrophoresis, Western transfer methods, and immunodetection. The results showed that low-molecular weight salivary mucin, ${\alpha}-amylase$, secretory IgA (sIgA), acidic proline-rich proteins, and cystatins were attached to all of these brackets regardless of the bracket types. High-molecular weight mucin, which promotes the adhesion of Streptococcus mutans, did not adhere to uy orthodontic brackets. Though the same components were detected in all bracket pellicles, however, the gel profiles showed qualitatively and quantitatively different pellicles, according to the origins of saliva and the bracket types. In particular, the binding of sIgA was more prominent in the pellicles from parotid saliva and the binding of cystatins was prominent in the pellicles from the form plastic brackets. This study indicates that numerous salivary proteins adhere to the orthodontic brackets and these salivary proteins adhere selectively according to bracket types and the types of the saliva.

본 연구의 목적은 다양한 교정용 브라켓의 표면에 형성되는 타액성 피막의 조성을 확인하고, 전타액, 악하선타액 및 이 하선타액에서 유래하는 타액성 피막의 성분을 비교하는 것이다. 네 가지 서로 다른 종류의 교정용 브라켓을 본 연구에 사용하였다. 이들은 $022{\times}028$ Roth Prescription의 상악 소구치 브라켓으로 조성은 다음과 같다: 스테인레스 스틸, 단결정 사파이어, 다결정 알루미나 및 플라스틱 브라켓. 교정용 브라켓을 각각 전타액, 이하선타액 및 악하선타액에 2시간 배양하여 타액성 피막을 형성시켰다 브라켓 피막의 타액성분은 sodium dodecyl sulfate-polyacrylamide gel electrophoresis, Western transfer method 및 면역검출법을 통해 확인하였다. 이 결과 low-molecular weight salivary mucin, ${\alpha}-amylase$, secretory IgA (sIgA), acidic proline-rich proteins, cystatins 등이 모든 브라켓의 타액성 피막에 존재하였으며, 치아우식증의 원인균인 Streptococcus mutans의 부착을 촉진시키는 타액단백질인 high-molecular weight mucin은 어떤 브라켓에도 부착하지 않았다. 그러나, 비록 동일한 타액단백질이 모든 브라켓에서 발견되었지만, 타액단백질 부착 양상은 타액의 종류 및 브라켓의 종류에 따라 양적 및 질적으로 다르게 나타났다. 특히 sIgA는 이하선타액에서 유래한 브라켓 피막에 더 많이 부착하였고, cystatins의 경우는 플라스틱 브라켓에서 유래한 브라켓 피막에 더 많이 존재하였다 본 연구는 다양한 타액단백질이 교정용 브라켓에 부착하며, 타액단백질이 타액의 출처 및 브라켓의 종류에 따라 교정용 브라켓의 표면에 선택적으로 부착함을 나타내었다.

Keywords

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