發(fā)布時間：2018-11-01 18:24

【摘要】：目的:通過實驗研究氟納米羥基磷灰石對早期根面齲的再礦化效果,并與納米羥基磷灰石、氟化泡沫和氟化鈉溶液的再礦化效果進行比較。方法:制備人工早期根面齲模型41個,使用掃描電鏡觀察脫礦后的根面的表面形態(tài)及用數(shù)顯顯微硬度計測量脫礦后根面的顯微硬度。將40個根面齲模型隨機分為5組:空白對照組、氟納米羥基磷灰石組、納米羥基磷灰石組、氟化泡沫組和氟化鈉溶液組。每組使用其相應(yīng)的試劑處理,經(jīng)7dpH循環(huán)及20d再礦化處理,于掃描電鏡觀察和顯微硬度計測量。統(tǒng)計采用單因素方差分析并作LSD-t檢驗,實驗前后采用單樣本t檢驗。結(jié)果:氟納米羥基磷灰石組掃描電鏡觀察根表面有大量晶粒沉積且平滑,其硬度值與脫礦后和其他組硬度值比較,有統(tǒng)計學(xué)意義(P0.05)。結(jié)論:氟納米羥基磷灰石對早期根面齲有較好的再礦化效果。
[Abstract]:Objective: to study the effect of fluorine nano-hydroxyapatite on early root caries and compare it with nano-hydroxyapatite, fluorinated foam and sodium fluoride solution. Methods: 41 artificial early root surface caries models were made. The surface morphology of demineralized root surface was observed by scanning electron microscope and the microhardness of demineralized root surface was measured by digital microhardness meter. Forty root caries models were randomly divided into 5 groups: blank control group, fluorine nano-hydroxyapatite group, fluorinated foam group and sodium fluoride solution group. Each group was treated with their corresponding reagents and treated by 7dpH cycle and 20 d re-mineralization. The results were observed by scanning electron microscope and measured by microhardness meter. Single factor analysis of variance (ANOVA) and LSD-t test were used, and single sample t test was used before and after the experiment. Results: in the fluorine nano-hydroxyapatite group, a large number of grains were deposited on the root surface under scanning electron microscope, and the hardness values were statistically significant compared with those after demineralization and other groups (P0.05). Conclusion: fluorine nano hydroxyapatite has a better effect on early root caries.
【作者單位】： 佳木斯大學(xué)口腔醫(yī)學(xué)院;佳木斯大學(xué)附屬第二醫(yī)院口腔醫(yī)院;
【分類號】：R781.1

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本文編號：2304726