發(fā)布時間：2018-10-31 19:43

【摘要】：目的：研究Varnish XT和ICON滲透樹脂兩種微創(chuàng)治療材料對釉質(zhì)齲白斑顏色及釉質(zhì)表面顯微硬度的影響。方法：選擇牛門齒100顆，將唇面向下作為觀察面，環(huán)氧樹脂包埋，打磨。暴露至少6mm×10mm的釉質(zhì)牙面，分A，B，，C，D，E5個區(qū)，E區(qū)用抗酸指甲油封閉。并分別采用人工齲脫礦液后A區(qū)不做處理，B區(qū)經(jīng)Varnish XT處理，C區(qū)經(jīng)ICON滲透樹脂處理，D區(qū)經(jīng)氟化物處理后，用電子分光光度比色儀測量L*值，維氏硬度儀測量表面顯微硬度值。結(jié)果：脫礦后樣本A、B、C、D、E區(qū)的L*值有統(tǒng)計學差異（P0.05）,可以認為各組的L*值不同；B、C、D三區(qū)兩兩比較L*值均有統(tǒng)計學差異；B、C、D區(qū)經(jīng)處理后與A區(qū)相比，L*值有統(tǒng)計學差異（P0.05）,其L*值均較A區(qū)降低，且L*值C區(qū)B區(qū)D區(qū)；C區(qū)的L*值與E區(qū)相比，無統(tǒng)計學差異（P0.05），尚不能認為兩區(qū)的L*值不同。樣本使用維氏硬度儀測量表面顯微硬度值，脫礦樣本經(jīng)處理后A、B、C、D、E區(qū)的釉質(zhì)表面顯微硬度(SMH)值有統(tǒng)計學差異（P0.05），可認為各組間SMH值不同；經(jīng)兩兩比較，C區(qū)與B區(qū)，C區(qū)與D區(qū)均有統(tǒng)計學差異（P0.05），可以認為C區(qū)與B區(qū)，C區(qū)與D區(qū)SMH值不同；B區(qū)的SMH值與D區(qū)相比，無統(tǒng)計學差異（P0.05）。結(jié)論：ICON滲透樹脂和Varnish XT對齲白斑的顏色都有明顯的改善，效果優(yōu)于氟化物，且ICON滲透樹脂效果優(yōu)于Varnish XT；ICON滲透樹脂、Varnish XT和氟化物對齲白斑的顯微硬度都有明顯的改善，ICON滲透樹脂的改善較Varnish XT和氟化物明顯，VarnishXT和氟化物之間無明顯差別。
[Abstract]:Objective: to study the effect of Varnish XT and ICON osmotic resin on the color of enamel caries and the microhardness of enamel surface. Methods: 100 cattle incisors were selected, and the lower lip was used as the observation surface. Epoxy resin was embedded and polished. The enamel surfaces of at least 6mm 脳 10mm were exposed and divided into 5 areas of 6mm 脳 10mm, and the E region was blocked with acid-resistant nail polish. After artificial caries demineralization solution, zone A was not treated, area B was treated with Varnish XT, area C was treated with ICON resin, and area D was treated with fluoride. The values of L * were measured by electronic spectrophotometry. The surface microhardness was measured by Vickers hardness tester. Results: after demineralization, there were significant differences in L * values in the Acarinophane region (P0.05), which could be regarded as different L* values in each group, and there were statistical differences in the L* values in the three regions of BCU D and C (P 0.05), and there was no significant difference in the L* values between the two groups. After treatment, there was significant difference in L* value between the two regions (P0.05), and the L* values were lower than those in the A region, and the L* values in the C region were lower than those in the A region (P 0.05), and the L* values in the C region were lower than those in the A region. There was no statistical difference between C region and E region (P0.05), so the L* values of the two regions could not be considered to be different. The surface microhardness of samples was measured by Vickers hardness instrument, and the (SMH) values of enamel surface microhardness were significantly different among the demineralized samples after treatment (P0.05), and the SMH values of the demineralized samples were different. After pairwise comparison, C region and B region, C area and D region have statistical difference (P0.05), it can be considered that C region and B region, C area and D region SMH value is different; B area SMH value and D area, there is no statistical difference (P0.05). Conclusion: ICON osmotic resin and Varnish XT can improve the color of caries leukoplakia obviously, the effect is better than fluoride, and the effect of ICON permeation resin is better than that of Varnish XT;. The microhardness of caries leukoplakia was improved obviously by ICON permeation resin, Varnish XT and fluoride. The improvement of ICON permeation resin was more obvious than that of Varnish XT and fluoride. There was no significant difference between VarnishXT and fluoride.
【學位授予單位】：新疆醫(yī)科大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：R781.1

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