透光率的量直接影响仿生修复材料颜色的准确性，仿生全瓷修复体与天然牙透光率是否一致，透光率与色知觉之间存在何种相关性，目前仍无数据可依。本研究拟通过对天然牙透光率的分析，揭示透光率与色知觉之间所存在的自然规律，以解决目前仿生全瓷修复材料因透光率不同而存在的颜色差异问题。实验以透光率函数公式为基础，通过构建天然牙透光率专用数学模型来解析天然牙体组织的透射系数，探索不同条件下天然牙冠透光率。并以色坐标和透光率数学模型来分析天然牙冠透光率与色知觉之间所存在自然规律与相关性，寻求天然牙冠透光率与颜色的比例关系，依据该变化关系分析目前仿生修复材料透光率与颜色所存在的问题，阐明透光率对颜色的影响机制，为缩小全瓷修复体与天然牙冠的视觉差异提供客观的理论依据，从新定义天然牙颜色的认知和表述形式。该设想的提出揭示天然牙冠透光率与颜色变化规律，拓展了全瓷修复材料仿生学研究。

The amount of light transmittance would directly affect the accuracy of color of the bionic restoration materials. Evidence on whether the light transmittance of bionic all-ceramic restoration and natural tooth is consistent, or the possibility of relativity between light transmittance and color perception is still limited. The objective of this study was to analyze the light transmittance of natural tooth, and reveal the natural law between light transmittance and color perception of nature tooth, then finally solve the clinical problem about the color difference of bionic all-ceramic restoration materials and natural tooth. The research would construct a special mathematical model based on natural tooth light transmittance function formula, and analyze the transmission coefficient of natural tooth tissue, and explore different conditions of light transmittance on natural tooth crown, looking for the application on biomimetic restoration materials: such as clarifying influence mechanism of light transmittance on colors, decreasing the visual difference between all-ceramic restoration and natural tooth, providing the theoretical basis of the new definition of the cognitive and expression form of natural tooth color. As a part of study on bionics all-ceramic restoration materials, such idea would reveal the law between the light transmittance and color of natural tooth crown.