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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Transmittance of a Bioceramic Dental Restorative Material Based on Calcium Aluminate
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Transmittance of a Bioceramic Dental Restorative Material Based on Calcium Aluminate

机译：基于铝酸钙的生物陶瓷牙科修复材料的透光率

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摘要

This article investigates the transmittance of a new ceramic filling material as a function of time, thickness, wavelength, and addition of pigments. In the hardened state the ceramic material is composed of hydrates, calcium aluminate, and glass fillers. The radiopacity of the investigated material is also measured. The results of the transmittance are compared to a commercial glass ionomer cement (Fuji II) and resin composite (Tetric Ceram). The transmittance increased with time from low values after 1 h to values close to the glass ionomer cements after 1 week. The resin composite had almost twice the transmittance as the calcium aluminate material and the glass ionomer cement. The amount of light passing through the material was dependent on both the sample thickness and the wavelength. Samples of 0.5-mm thickness transmitted almost twice as much as 1-mm-thick samples. Regarding the wavelength, blue light was scattered very effectively (low transmittance), whereas red light was not (high transmittance). Addition of pigments lowered the transmittance. The radiopacity was slightly higher than that of enamel.
机译：本文研究了一种新型陶瓷填充材料的透射率，该透射率是时间，厚度，波长和颜料添加量的函数。在硬化状态下，陶瓷材料由水合物，铝酸钙和玻璃填料组成。还测量了被调查材料的射线不透性。将透射率的结果与市售的玻璃离聚物水泥（Fuji II）和树脂复合材料（Tetric Ceram）进行比较。透射率随时间从1小时后的低值增加到1周后接近玻璃离聚物粘固剂的值。该树脂复合材料的透射率几乎是铝酸钙材料和玻璃离聚物粘固剂的两倍。穿过材料的光量取决于样品的厚度和波长。 0.5毫米厚的样品几乎透射了1毫米厚样品的两倍。关于波长，蓝色光非常有效地散射（低透射率），而红色光没有散射（高透射率）。颜料的添加降低了透射率。射线不透性略高于搪瓷。

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