Distrontium Cerate as a Radiopaque Component of Hydraulic Endodontic Cement.
Distrontium Cerate as a Radiopaque Component of Hydraulic Endodontic Cement.
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DOI：
10.3390/ma15010284
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发表时间：
2021-12-31
期刊：
影响因子：
--
通讯作者：
Uo M
中科院分区：
文献类型：
--
作者：
Dumrongvute K;Adel S;Wada T;Kawashima N;Piyachon C;Watanabe H;Kurabayashi T;Okiji T;Uo M
本研究旨在合成金属陶瓷(2SrO·CeO2：S2Ce)，并评价其作为牙髓粘固剂替代成分的性能。以氢氧化锶和碳酸铈为原料，经煅烧制备了S2Ce水泥。随后，用X射线衍射仪对其晶相进行了确证。S2Ce水泥具有快速的凝结时间(121min)，在搅拌后1d就达到了较高的抗压强度(72.1 Mpa)，与商品三氧化物骨料(MTA)水泥(ProRoot MTA)在搅拌28d后的抗压强度相当。然而，当W/P比在0.30~0.40之间时，储存28d后抗压强度下降(p<；0.05)。S2Ce水泥的离子溶解测试表明，在水中浸泡(1d后为5.27 mg/mL)，锶离子被释放出来，而没有检测到Ce3+的溶解。S2Ce表现出比商业MTA(p<；0.05)高约三倍的放射不透明度(相当于9.0 mm铝厚度)。这些发现表明，S2Ce可能是一种具有快速固化和高放射不透明度的水硬性根管粘固剂成分。
This study aimed to synthesize distrontium cerate (2SrO·CeO2: S2Ce) and evaluate its properties as an alternative component of the endodontic cement. S2Ce cement was prepared through calcination of strontium hydroxide and cerium carbonate. Subsequently, the crystal phase was confirmed using X-ray diffraction. S2Ce cement exhibited a rapid setting time (121 min) and achieved a high compressive strength (72.1 MPa) at 1 d after mixing, comparable to the compressive strength of a commercial mineral trioxide aggregate (MTA) cement (ProRoot MTA) after 28 d post mixing. However, the compressive strength decreased after 28 d of storage when the W/P ratio was 0.30–0.40 (p < 0.05). Ion dissolution test of the S2Ce cement showed that strontium ions were released after immersion in water (5.27 mg/mL after 1 d), whereas cerium dissolution was not detected. S2Ce exhibited approximately three times higher radiopacity (9.0 mm aluminum thickness equivalent) compared to the commercial MTA (p < 0.05). These findings suggest that S2Ce is a possible component for hydraulic endodontic cement that demonstrates a rapid setting and high radiopacity.
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