【摘要】：目的:觀察碳酸飲料造成的實驗性釉質(zhì)脫礦在不同材料處理后對牙釉質(zhì)再礦化影響的研究。方法:收集因正畸拔除的新鮮前磨牙,隨機分為脫礦組(A組);蒸餾水處理組(B組);滲透樹脂處理組(C組)。所有離體牙分為近遠(yuǎn)中釉質(zhì)塊,全部浸泡于雪碧中建立脫礦模型,之后A組釉質(zhì)面涂布抗酸性指甲油,B組和C組釉質(zhì)面分別用蒸餾水和滲透樹脂處理,所有釉質(zhì)塊置于人工唾液中37℃恒溫水浴再礦化8周。每組各隨機選取6個近中釉質(zhì)塊,掃描電鏡下觀察釉質(zhì)表面的微觀結(jié)構(gòu);其余近中釉質(zhì)塊經(jīng)處理后,激光共聚焦掃描顯微鏡下觀察熒光圖像;遠(yuǎn)中釉質(zhì)塊采用顯微硬度儀檢測各組的硬度值。結(jié)果:掃描電鏡觀察,A組釉質(zhì)面粗糙,大量釉柱斷裂形成大小不等的孔隙樣結(jié)構(gòu),B組可見少量礦物質(zhì)沉積,部分孔隙變淺甚至消失,C組釉質(zhì)面較光滑平坦,無明顯孔隙。激光共聚焦掃描顯微鏡觀察,A組熒光染料沉積多,熒光面積和熒光強度大,B組和C組熒光染料沉積減少,熒光面積和熒光強度減弱,且C組減弱程度較B組更為明顯。顯微硬度儀檢測結(jié)果,B組和C組藥物處理后顯微硬度值較脫礦后顯微硬度值增大,且C組較B組增大幅度更高,差異均具有統(tǒng)計學(xué)意義(P0.05)。結(jié)論:滲透樹脂對碳酸飲料造成的實驗性釉質(zhì)脫礦最具有積極的治療作用。
[Abstract]:Aim: to observe the effect of experimental enamel demineralization induced by carbonated beverage on enamel mineralization in different materials. Methods: fresh premolars extracted by orthodontic treatment were randomly divided into demineralization group (group A), distilled water group (group B) and osmotic resin group (group C). All the isolated teeth were divided into proximal and distal enamel mass, all of which were soaked in Sprite to establish demineralized model, then A group enamel surface was coated with acid resistant nail polish group B and C enamel surface was treated with distilled water and permeable resin, respectively. All enamel masses were mineralized in 37 鈩，

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