| 阳昕怡,汪俊.运用色度学分析技术对离体乳牙脱矿与再矿化时间的实验研究[J].口腔材料器械杂志,2013,22(2):86-89. |
| 运用色度学分析技术对离体乳牙脱矿与再矿化时间的实验研究 |
| Evaluation on the demineralization and remineralizanon of deciduous teeth enamel in vitro using the chroma analysis |
| 投稿时间：2012-05-15 修订日期：2013-03-20 |
| DOI：10.11752/j.kqcl.2013.02.07 |
| 中文关键词: 乳牙釉质 脱矿 再矿化 数码照相 色度分析技术 |
| 英文关键词:Deciduous tooth enamel Demineralization Remineralization Digital images RGB analysis technique |
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| 中文摘要: |
| 目的: 运用数码照相和色度分析技术观测不同酸蚀时间对离体乳牙釉质脱矿以及再矿化时间的影响,以寻找乳牙合适的脱矿及再矿化时间。方法: 将60颗离体上颌乳中切牙牙冠唇面开窗包埋。标本随机分为4个处理组,32%的磷酸凝胶分别酸蚀开窗面15s(组1)、30s(组2)、45s(组3)和60s(组4),使开窗面脱矿,再将其置于人工唾液中分别再矿化8h、24h、48h、72h及1周。脱矿后采用2%亚甲基蓝对开窗面进行染色,数码照相,运用图像分析软件对图像进行色度分析,记录色度参数,运用SPSS19.0对实验数据进行统计学分析。结果: 酸蚀15s后染色,其色度值变化即可被计算机所识别;酸蚀15s再矿化72h、酸蚀30s再矿化48h、酸蚀45s和60s再矿化24h时的色度值与矿化前的色度值相比,差异具有统计学意义,其P值分别为0.01、0.037、0.047和0.011。结论: 运用色度学技术分析乳牙脱矿与再矿化的时间,提示乳牙釉质最合适的酸蚀时间为15s,再矿化时间为72h。 |
| 英文摘要: |
| Objective:To determine the influence of the different etching time and renuneralization time on the deciduous teeth enamel. To find a reasonable etching time and a remineralization time. Methods:Sixty crowns of deciduous incisors were randomly divided into four groups. All the incisors were embedded but left a rectangular window exposed in the labial surface. 32% phosphoric acid gel was applied to the window for 15s, 30s, 45s and 60s for the four groups respectively to demineralize the teeth. Then the samples were placed in artificial saliva at 37℃for 8h, 24h, 48h, 72h and 7d respectively. Samples were colored with 2% methylene blue before and after etching, and after remineralization. Then digital images were taken and input into the computer. Using chrome analysis technique, the chrome parameters in above states were measured. SPSS19. 0 software package was used to statistically analyse the data. Results:The change in chrome value can be detected even only after ISs' etching. There were statistical differences between the chrome valuee after demineralization and that of 15s'etching-72h's remineralization group, 30s' etching-48h's remineralization group, 45s' etching-24h's remineralization group and 60s'etching-24h's remineralization group, with p value of 0.0l, 0.037, 0.047 and 0. 011, respectively. Conclusions: The reasonable etching time and remineralization time for the deciduous teeth enamel is ISs and 72h, respectively. |
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