十种新一代复合材料的颜色稳定性比较：一项体外研究。

Comparison of the color stability of ten new-generation composites: an in vitro study.

作者信息

Dietschi D, Campanile G, Holz J, Meyer J M

机构信息

Department of Restorative Dentistry and Endodontics, University of Geneva, Switzerland.

出版信息

Dent Mater. 1994 Nov;10(6):353-62. doi: 10.1016/0109-5641(94)90059-0.

DOI:10.1016/0109-5641(94)90059-0

PMID:7498599

Abstract

OBJECTIVES

The aim of this in vitro study was to evaluate the color stability of modern light-cured composites when subjected to various physico-chemical and staining conditions.

METHODS

Ten brands were evaluated including hybrids, microfine hybrids and microfilled composites. Some universal shade samples underwent only staining tests, while others were subjected to one of the following experimental conditions: thermocycling, postcuring, polishing or a 1 wk immersion in saline, prior to staining. The coloring solutions used for the staining tests were: coffee, E 110 food dye, vinegar and erythrosin. A colorimetric evaluation according to the CIE Lab* system was performed after experimental periods of 1 and 3 wk.

RESULTS

Erythrosin caused the greatest color change for the composites tested. A reduced susceptibility to staining was observed where surfaces had been polished. Low water sorption, a high filler-resin ratio, reduced particle size and hardness, and an optimal filler-matrix coupling system were related to improved composite resistance to discoloration.

SIGNIFICANCE

Resistance of modern composites to discolorations still depends on their structure and manipulation.

摘要

目的

本体外研究的目的是评估现代光固化复合材料在各种物理化学和染色条件下的颜色稳定性。

方法

评估了10个品牌，包括混合型、微细化混合型和微填料复合材料。一些通用比色样本仅进行染色测试，而其他样本在染色前需经受以下实验条件之一：热循环、后固化、抛光或在盐水中浸泡1周。用于染色测试的染色溶液有：咖啡、食用色素E 110、醋和赤藓红。在1周和3周的实验期后，根据CIE Lab*系统进行比色评估。