北京大学学报(医学版) ›› 2014, Vol. 46 ›› Issue (1): 53-57.

• 论著 • 上一篇    下一篇

渗透树脂处理釉质白垩斑的表面粗糙度及颜色稳定性

赵晓一1,高学军2△   

  1. (北京大学口腔医学院·口腔医院 1. 综合科,2. 牙体牙髓科,北京100081)
  • 出版日期:2014-02-18 发布日期:2014-02-18

Surface roughness and staining stability of infiltrant resin for enamel white spot  lesion

ZHAO Xiao-yi1, GAO Xue-jun2△   

  1. (1. Department of General Therapy, 2. Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing 100081, China)
  • Online:2014-02-18 Published:2014-02-18

摘要: 目的:探讨渗透树脂治疗后,釉质白垩斑表面粗糙度、表面抗着色能力及其相关因素。方法:选取人第三磨牙30颗,环氧树脂包埋, 暴露3个大于1 mm2的区域(A点、B点和C点)。将样本按脱矿时间分为3组(1 d,2 d,3 d),每组10颗,染色液浸泡21 d。分别测量正常釉质 A点、渗透树脂B点以及脱矿病损C点染色前的表面粗糙度,以及染色前后的国际照明委员会(Commission Internationaled’Eclairage, CIE) L*a*b*值。结果:3组样本渗透树脂B点表面粗糙度分别为(0.15±0.021)μm、(0.31±0.03)μm和(0.40±0.02)μm,3组样本脱矿病损C 点表面粗糙度分别为(1.07±0.10)μm、(2.89±0.13)μm和(3.41±0.14)μm。各组样本B点和C点表面粗糙度均随着脱矿时间延长而增加 ,组间差异分别有统计学意义(P<0.01)。3组样本染色前B点与正常釉质A点的色差逐渐增加,差异有统计学意义(P<0.01),且组1 B点与正 常釉质之间色差小于3.7,而其余两组色差大于3.7。染色后组1、组2 B点与正常釉质色差小于3.7,而组3色差大于3.7,组1、组2之间的色差差 异无统计学意义,但和组3色差的差异有统计学意义(P<0.01)。结论:病损的脱矿程度不但能够影响渗透树脂对白垩斑即刻的遮盖效果,并且 能够影响其表面粗糙度以及其颜色稳定性;渗透树脂病损表面粗糙度较正常釉质高,有利于病损表面白垩斑的长期遮盖效果。

关键词: 树脂类, 合成, 牙釉质, 龋齿, 表面特性, 颜色

Abstract: Objective: To investigate the influence factors on the surface roughness and staining susceptibility of infiltrant resin. Methods: In the study, 30 human third molars were used, and each sample had three open enamel windows. The samples were randomly divided into three groups according to their different demineralized time. Each sample had at least one intact spot (A), one infiltrant resin spot (B) and one artificial white spot lesion (C). The surface roughness was tested before color staining for all the three spots of each specimen. The specimens were stored in a staining solution (coffee) for a period of 21 days, before and after which the color Commission Internationaled’ Eclairage (CIE)L*a*b* was recorded for A, B and C spots.Results: The B spot’s surface roughness of each group was(0.15±0.02)μm,(0.31±0.03)μm and(0.40±0.02)μ m, respectively. And the C spot’s surface roughness each was(1.08±0.10)μm,(2.89±0.13)μm and(3.41±0.14)μm. The surface roughness of B and C of the three groups increased with demineralization time longer, and had significant difference for both B and C (P<0.01). The ΔE of the three groups between A and B before staining had significant difference (P<0.01). And the ΔE of group1 was less than 3.7, but the other two groups’ more than 3.7. After staining, the ΔE of groups 1 and 2 was less than 3.7 but that of group 3 was more than 3.7. There were significant differences between groups 1 and 3, and also between groups 2 and 3(P<0.01).Conclusion: The degree of the lesion’s demineralization has effect on the surface roughness and color susceptibility of infiltrant resin. The increased surface roughness of infiltrant resin has positive effect on masking enamel white spots.

Key words: Resins, synthetic, Dental enamel, Dental caries, Surface properties, Color

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