Contribution of micropores in porous zirconia spheres to high optical transparency of dental resin composites.

IF 1.9 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Dental materials journal Pub Date : 2024-01-30 Epub Date: 2023-12-29 DOI:10.4012/dmj.2023-106

Shingo Mizobuchi, Masataka Ohtani, Kazuya Kobiro

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引用次数: 0

Abstract

Transparency to UV-Vis light and radiopacity of dental resin composites containing zirconia (ZrO₂) fillers were investigated. The transparency of the resin composite containing porous ZrO₂ spheres was much higher than that containing irregularly shaped ZrO₂ particles. Calcination of the porous ZrO₂ spheres at high temperatures led to dramatically reduced specific surface areas and pore volumes. The transparency of the resin composite containing the calcined porous ZrO₂ spheres drastically decreased as the calcination temperature increased. Then, the enhanced UV-Vis transmittance of the resin composite containing porous ZrO₂ spheres is attributed to the concentration and physical characteristics of the pores. The radiopacity of the resin composites containing porous ZrO₂ spheres increased slightly with increasing calcination temperature. This study revealed that the internal structure of the ZrO₂ fillers mainly influenced in the UV-Vis light transmittance of the resin composites.

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多孔氧化锆球中的微孔有助于提高牙科树脂复合材料的光学透明度。

研究了含有氧化锆（ZrO2）填料的牙科树脂复合材料在紫外可见光下的透明度和不透射线性。含有多孔 ZrO2 球体的树脂复合材料的透明度远高于含有不规则形状 ZrO2 颗粒的树脂复合材料。对多孔 ZrO2 球体进行高温煅烧后，其比表面积和孔隙率大幅降低。随着煅烧温度的升高，含有煅烧多孔 ZrO2 球的树脂复合材料的透明度急剧下降。含有多孔 ZrO2 球体的树脂复合材料的紫外可见光透射率提高，这与孔隙的浓度和物理特性有关。随着煅烧温度的升高，含有多孔 ZrO2 球的树脂复合材料的不透射线性略有增加。该研究表明，ZrO2 填料的内部结构主要影响树脂复合材料的紫外可见光透射率。

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来源期刊

Dental materials journal 医学-材料科学：生物材料

CiteScore

4.60

自引率

4.00%

发文量

102

审稿时长

3 months

期刊介绍： Dental Materials Journal is a peer review journal published by the Japanese Society for Dental Materials and Devises aiming to introduce the progress of the basic and applied sciences in dental materials and biomaterials. The dental materials-related clinical science and instrumental technologies are also within the scope of this journal. The materials dealt include synthetic polymers, ceramics, metals and tissue-derived biomaterials. Forefront dental materials and biomaterials used in developing filed, such as tissue engineering, bioengineering and artificial intelligence, are positively considered for the review as well. Recent acceptance rate of the submitted manuscript in the journal is around 30%.