酸腐蝕處理된 琺瑯質表面의 睡液汚梁時 再酸腐蝕 時間에 따른 레진 接合力에 關한 硏究
EFFECT OF SALIVA CONTAMINATION AND RE-ETCHING TIME ON THE BOND STRENGTH OF ACID-ETCHED ENAMEL
소속 상세정보
김종훈(金鍾勳)/Jong Hoon Kim
김진태(金鎭泰)/Jin Tae Kim
KMID : 0358919890160010144
Abstract
結論
酸腐蝕處理된 琺瑯質表面의 唾液汚染時 再酸腐蝕時間에 따른 레진接合力의 變化를 알아보
기 爲하여 97個의 乳前齒를 對象으로 7個齒牙는 走査電子顯微鏡觀察을 하였고 90個 齒牙는
레진 剪斷强度를 測定한 結果, 다음과 같은 結論을 얻었다.
1. 走査電子顯微鏡像에서 唾液에 汚染된 樣相은 異物質의 被覆으로 觀察되었다.
2. 10秒以上 再酸腐蝕術 施行時 異物質의 被覆이 際去되었다.
3. 再酸腐蝕時間이 길어짐에 따라 腐蝕의 程度가 深化되었다.
4. 唾液汚染後 물로만 洗滌한 實驗群에서만 레진接合力이 對照群에 比해 有意性있게 滅少
했다.
5. 10秒, 20秒, 30秒, 2分의 再酸腐蝕時間에 따른 레진 接合力은 有意한 差異가 없었다.
#초록#
The purpose of this in vitro study was to determine the effect of saliva contamination
and re-etching time on the bond strength when the acid-etching technique was used in
pedodontic treatment.
The shear bond strength of composite resin was tested with an Instron and surface
topography was examined with a SEM.
The results were as follows.
1. When etched enamel surface was contaminated with saliva for 30 seconds, adherent
surface coating was observed in SEM.
2. When contaminated enamel surface was re-etched for 10 seconds or longer,
adherent surface coating was removed.
3. The more the re-etching time was increased, the more the etching depth was
deepened.
4. Only the A group that were only washed with water showed significantly less
shear bond strength than control group.
5. There was no significant difference in the bond strength between 10, 20, 30 and
120 seconds re-etching time.
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