레진 除去 齒面의 齬蝕感愛性에 對한 硏究
A STUDY OF THE CARIES SUSCEPTIBILITY OF THE RESIN DEBONDED TOOTH SURFACE
소속 상세정보
이재천(李載天)/Jae Cheoun Lee
김진태(金鎭泰)/Jin Tae Kim
KMID : 0358919890160010164
Abstract
結論
著者는 레진除去齒面이 레진附着 經驗이 없는 齒面에 比해 蝕感受性에 있어서 어떠한
差異를 보이는가에 對해 硏究하고자, 健全小臼齒 30個를 對象으로, 類面에 레진을 使用하는
直接附 着法으로 矯正裝置를 附着한 後, 通常的 方法으로 殘存레진을 除去하고 硏磨한 다음
人工 蝕을 誘發시킨 後, 橫斷薄片을 製作하여 標準光 및 偏光顯微鏡으로 觀察하여 다음과
같은 結論을 얻었다.
1. 레진附着經驗 齒面 및 未附着經驗 齒面 共히, 100μm 內外 두께의 蝕性 脫灰가 發生
되었다.
2. 表層은 30μm內外, 表層下脫灰部는 70 μm內外 두께로 兩齒面間에 큰 差異가 없었다.
3. 偏光顯微鏡 所見에서 兩側 齒商 共히, 表層 및 健全 琺瑯質에서는 陰性複屈折을, 表層
下脫灰部에서는 陽性複屈折을 보였다.
#초록#
To study the caries susceptibility of the resin debonded tooth surface compared to
unbonded tooth surface, 30 sound premolars were used for this experiment.
DBS brackets were bonded on buccal surfaces and removed, polished by clinical
methods. And the teeth were suspended in artificial caries solution.
The teeth were cross thin sectioned and observed through ordinary light and polarized
light microscope. The results were as follows;
1. Both resin debonded tooth surfaces and resin unbended tooth surfaces showed equal
depths (about 100μm) of caries-like demineralization.
2. The depths of the surface areas were about 30μm, and the depths of the
subsurface demineralized areas were about 70μm under the surface area.
3. On polarized microscopic findings, the surface area and intact enamel showed weak
and negative birefrangence while the subsurface area showed strong and positive
birefrangence.
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