인산전처리된 법랑질에 2-단계 자가 부식 접착제의 프라이머 도포가 복합레진과의 결합강도에 미치는 효과
Effect of Primer in Two step Self-etching Adhesives on the bond strength between Pre-etched Enamel and a Composite
김지훈, 임호남,
소속 상세정보
김지훈 ( Kim Jee-Hoon ) - 경희대학교 치의학전문대학원 치과재료학교실 및 치과재료개발시험센터
임호남 ( Lim Ho-Nam ) - 경희대학교 치의학전문대학원 치과재료학교실 및 치과재료개발시험센터
KMID : 0362220130400040335
Abstract
The purpose of this study was to evaluate the composite-to-enamel bond of two step self-etching adhesive systems on pre-etched enamel with and without the application of their primers. The enamel of 80 bovine incisors was ground(600-grit SiC paper) flat and randomly divided into eight groups(n = 20). After 15 sec phosphoric acid(PA) pre-etching, the enamel was bonded with UniFil Bond(GC) or Clearfil SE Bond(Kuraray) according to manufacturer’s instructions or without primer. The shear bond strengths were measured before and after thermocycling(5000 times). For evaluation of resin tag penetration and average roughness(Ra), extra specimens were observed under SEM and optical surface roughness tester. Priming the pre-etched enamel led to the formation of more shallow resin tags and reduced the value of Ra. The use of primer of self-etching adhesives did not affect the shear bond strength (p>0.05) Thermocycling did not affect the shear bond strength (p>0.05)
키워드
Enamel; Pre-etching; Primer; Self-etching adhesive
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