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随着生活水平的提高,牙齿的健康在现代社会日益受到人们的关注。临床治疗中,完善恢复牙齿的功能并且达到舒适、美观的效果往往是患者治疗牙齿的基本要求。龋病[1]是多种因素复合作用导致的牙齿硬组织的病变,表现为无机质的脱矿和有机质的分解,随着病程的发展,牙体组织由色泽变化到形成实质性缺损。银汞合金[2]是最常用的口腔充填材料,其毒性问题在很多文献中已有详尽的描述[3],而且其美观性差,与牙体的颜色不一致,在牙体预备
With the improvement of living standards, the health of the teeth in the modern society is increasingly subject to the people’s attention. Clinical treatment, improve the function of teeth to restore and achieve comfort, aesthetic effect is often the basic requirements of patients with dental treatment. Dental caries [1] is a combination of multiple factors lead to the hard tissue of the lesions, manifested as inorganic demineralization and decomposition of organic matter, with the course of disease, the tooth tissue changes from the color to the formation of substantial defects. Silver amalgam [2] is the most commonly used oral filling material, its toxicity has been described in detail in many documents [3], and its poor appearance, inconsistent with the color of the tooth in the tooth preparation