Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil.
Department of Physics, Minho University, Braga, Portugal.
J Esthet Restor Dent. 2018 Sep;30(5):397-407. doi: 10.1111/jerd.12421.
This review integrates published scientific information about the fluorescence of natural teeth, dental resins and ceramics, and the main methods of analysis and quantification presented in the literature.
Fluorescence is an emission of light (photons) by a substance that has absorbed light of higher energy. In natural teeth, it is more intense in the dentin than in the enamel and presents a bluish-white color. In dental resins and ceramics, fluorescence is obtained by the incorporation of materials that contain rare-earth luminescence centers (more precisely lanthanide luminescence centers), which allows these artificial materials to simulate natural teeth in a more beautiful and vital-looking way. However, the lack of knowledge about this optical phenomenon on the part of professionals indicates the need for more scientific studies and dissemination on this topic.
Aesthetic materials have variable spectral compositions and fluorescence intensities, which are not always compatible with natural teeth. The fluorescence of teeth and restorative materials can be influenced by several factors, such as aging, temperature, and bleaching. Several devices for fluorescence evaluation and quantification are used in studies under different methodologies, but the small number of studies on the subject make it difficult to compare their results.
Fluorescence is a fundamental optical property for aesthetic rehabilitations since its presence and intensity in the restorative materials allows achieving an aesthetic result much closer to reality. However, the fluorescent behavior of natural teeth and aesthetic restorative materials is not yet fully understood by researchers and clinicians. Greater understanding of this phenomenon will contribute to the selection, indication, and clinical use of these materials.
本综述整合了已发表的关于天然牙、牙树脂和陶瓷的荧光的科学信息，以及文献中提出的主要分析和定量方法。
荧光是物质吸收更高能量的光（光子）后发出的光。在天然牙齿中，牙本质的荧光比牙釉质强，呈现出蓝白色。在牙树脂和陶瓷中，通过掺入含有稀土发光中心（更确切地说是镧系发光中心）的材料来获得荧光，这使得这些人工材料能够以更美观、更有生命力的方式模拟天然牙齿。然而，由于专业人员对这种光学现象缺乏了解，这表明需要对此主题进行更多的科学研究和传播。
美学材料具有不同的光谱组成和荧光强度，这些并不总是与天然牙齿相匹配。牙齿和修复材料的荧光会受到多种因素的影响，如老化、温度和漂白。在不同方法学的研究中使用了几种用于荧光评估和定量的设备，但由于对该主题的研究较少，很难比较它们的结果。
荧光是美学修复的基本光学特性，因为其在修复材料中的存在和强度可以实现更接近现实的美学效果。然而，研究人员和临床医生对天然牙和美学修复材料的荧光行为还没有完全理解。对这一现象的深入了解将有助于这些材料的选择、指示和临床应用。
