Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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EFFECT OF APPLICATION METHODS OF A SELF-ETCHING PRIMER ADHESIVE SYSTEM ON ENAMEL BOND STRENGTH

자가부식 프라이머 접착제의 적용방식이 법랑질의 결합강도에 미치는 영향

  • Park, Jae-Gu (Department of Conservative Dentistry, College of Dentistry, Chosun University) ;
  • Cho, Kwon-Hwan (Department of Conservative Dentistry, College of Dentistry, Chosun University) ;
  • Cho, Young-Gon (Department of Conservative Dentistry, College of Dentistry, Chosun University)
  • 박재구 (조선대학교 치과대학 치과보존학교실) ;
  • 조권환 (조선대학교 치과대학 치과보존학교실) ;
  • 조영곤 (조선대학교 치과대학 치과보존학교실)
  • Published : 2008.03.31
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Abstract

The purpose of this study was to evaluate the effect of passive or active application of primer and coat times of bond on the shear bond strength when a self-etching primer adhesive (Clearfil SE Bond) was applied to enamel surface. Crowns of sixteen human molars were selected. Buccal and lingual enamels of crowns were partially exposed and slabs of 1.2 mm thick were made. They were divided into one of four equal groups (n = 8). Group 1: passive application of Primer and 1 coat of Bond, Group 2: active application of Primer and 1 coat of Bond, Group 3: passive application of Primer and 2 coats of Bond, Group 4: active application of Primer and 2 coats of Bond. Clearfil AP-X was bonded to enamel suface of each group using Tygon tubes. The bonded specimens were subjected to microshear bond strength (uSBS) testing with a crosshead speed of 1 mm/min. The results of this study were as follows; 1. The uSBS of Group 1 was the lowest among groups and the uSBS of Group 4 was the highest. 2. There was not statistically significant interaction between enamel uSBS by application method of Primer and coat time of Bond (p > 0.05). 3. There was not statistically significant difference between enamel uSBS by passive and active application of Primer (p > 0.05). 4. There was statistically significant difference between enamel uSBS by one- and two-coat of Bond (p < 0.05).

이 연구는 Clearfil SE Bond를 거친 법랑질 표면에 적용할 때, 자가부식 프라이머의 적용방식 (능동적인 또는 수동적인)과 접착레진의 도포회수 (1회 또는 2회)가 법랑질의 결합강도에 미치는 영향을 알아보기 위하여 시행하였다. 16개의 발거된 대구치 치관의 협면이나 설면에서 법랑질 절편을 만들어 4개의 군으로 배정한 다음, 1군은 프라이머를 수동적으로 적용한 후 접착레진을 1회 도포하였고, 2군은 프라이머를 능동적으로 적용한 후 접착레진을 1회 도포하였고, 3군은 프라이머를 수동적으로 적용한 후 접착레진을 2회 도포하였고, 4군은 프라이머를 능동적으로 적용한 후 접착레진을 2회 도포하였다. 적용된 접착레진을 10초간 광조사한 후, 법랑질 표면에 2-3개의 Tygon tube를 위치시키고 Clearfil AP-X를 충전하고 40초간 광조사 하였다. Universal testing machine을 이용하여 법랑질 표면에서 복합레진이 파절될 까지 분당 1.0 mm의 cross-head speed로 전단하중을 가하고 통계적으로 분석하여 다음과 같은 결과를 얻었다. 거친 법랑질에 대한 Clearfil SE Bond의 미세전단 결합강도는 자가부식 프라이머의 적용방식 보다는 접착레진의 도포회수에 의해 증가할 수 있음을 알 수 있었다.

Keywords

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Cited by

  1. The effect of various bonding systems on the microtensile bond strength of immediate and delayed dentin sealing vol.33, pp.6, 2008, https://doi.org/10.5395/JKACD.2008.33.6.526
  2. Influence of application methods of one-step self-etching adhesives on microtensile bond strength vol.36, pp.3, 2011, https://doi.org/10.5395/JKACD.2011.36.3.203