配色粘接剂改善瓷贴面修复ND6-ND9颜色效果的初步研究
2020-05-13张李磊李丹白保晶
张李磊 李丹 白保晶



[摘要]目的:应用配色粘接剂色料含量-色度值回归方程,定量计算配制个体化的配色粘接剂,研究个体化配色粘接剂对改善锂基瓷贴面修复ND6-ND9背景色的色彩效果。方法:选取IPS natural die material基牙比色板ND6、ND7、ND8、ND9各6片,共24片做为比色试件的基底;制备Ips.e.max A2 HT厚度为0.7mm试件24片。分别采用透明粘接剂和配色粘接剂将试件与基底粘接,制备透明组与配色组试件。用Crystaleye分光光度计比色仪测量试件的色度值,计算各组色度值与A2比色板色度值之间的色差值,并进行统计学分析。结果:配色组与目标色A2间色差值﹙△E﹚较透明组与目标色A2间色差值﹙△E﹚明显减小。秩和检验比较两者间差异有统计学意义﹙P<0.05﹚。结论:应用色料含量-色度值回归方程制作的配色粘接剂,可以改善锂基瓷贴面修复ND6-ND9背景色的美观效果。
[关键词]树脂粘接剂;瓷贴面;色度值;色差;颜色匹配
Abstract: Objective To apply the pigment conten-chroma value regression equation, to quantitatively calculate to make the color adhesive, and to improve lithium base porcelain cover repair ND6-ND9 background colour cosmetic results. Methods IPS natural die material abutments color plate ND6, ND7, ND8, ND9 each 6 pieces, a total of 24 pieces as basal than color specimen;A2 HT Ips. e.m ax porcelain piece of making ceramics specimen thickness of 0.7mm, 24 piece, was a randomized, transparent adhesive and the color adhesive bonding agent and color ceramics with specimen base adhesive. The transparent group and the color matching group samples were prepared. Using Crystaleye spectrophotometer colorimetric instrument to measure the color chromaticity values of the specimens, and to calculate the color difference value between combined chromaticity value and A2 color board chromaticity value. Statistical analysis was performed. Results Lithium base porcelain veneers repair ND6-9 background color,color difference(△E) between color matching group with the target color A2 color difference (△E) between the transparent group with the target color A2 decrease obviously. The rank sum test showed statistically significant difference between the two groups. Conclusion Applying Pigment content-chroma value regression equation to make color adhesive can improve the lithium base porcelain veneers repair ND6-ND9 background colour effect.
Key words: resin adhesive; porcelain veneers; chromaticity value; the color difference; color matching
随着微创修复理念的提出及全瓷材料机械性能的不断提升,临床上遇到由于药物、饮食及外伤等因素导致的牙齿颜色改变,严重影响美观时,瓷贴面常作为首选的修复方式。由于瓷贴面透光性好的材料特性及厚度的限制,修复颜色正常或轻度变色的基牙更容易取得理想的色彩修复效果;但在修复重度变色牙时,因受到牙齿基底颜色的影响,最终修复体的色彩效果并不理想。以往研究表明:当瓷层厚度较薄(<1.5mm)不能遮盖变色牙时,有色粘接剂可以调整最终修复体的颜色[1-2]。目前临床使用的成品粘接剂颜色种类有限,不能满足临床需要,针对此类问题,本实验选择IPS nature die material比色板中几组基底颜色较深的ND6-ND9作为背景色模拟体外变色牙,利用前期实验结果:色料含量对色度值影响的函数关系,定量计算制备个性化配色粘接剂,用以改善变色牙瓷贴面修复效果,以期达到修复体颜色与目标色更为接近的修复效果。
1 材料和方法
1.1 材料和仪器:白色色料、黄色色料、红色色料(TiO2、Bi2O3、Fe2O3分析纯,天津福晨化学试剂厂)、硅烷偶联剂(KH-570,南京臣工化学试剂有限公司)、Variolink N透明粘接剂、ND6、ND7、ND8、ND9基牙比色板、Ips.e.max瓷塊A2,HT、A2比色板(义获嘉伟瓦登特公司)、Crystaleye分光光度计比色仪(Olympus有……
