改性聚链烯酸酯（玻璃离子）水门汀——一项研究。

Modified polyalkenoate (glass-ionomer) cement--a study.

作者信息

Bansal R K, Tewari U S, Singh P, Murthy D V

机构信息

Department of Chemistry, Indian Institute of Technology, New Delhi.

出版信息

J Oral Rehabil. 1995 Jul;22(7):533-7. doi: 10.1111/j.1365-2842.1995.tb01199.x.

DOI:10.1111/j.1365-2842.1995.tb01199.x

PMID:7562219

Abstract

Conventional glass-ionomer cements with varying amounts (5-15%) of borax (Na2B4O7.10H2O) as modifier were prepared. These mixtures were spatulated with an aqueous solution of polyacrylic acid with a powder to liquid (P/L) ratio of 1.5:1. Properties such as working time, setting time, compressive strength, diametral tensile strength, solubility and fluoride release of these cements were determined. It was observed that the working time and setting time of the resultant cements shortened with the addition of borax. Certain physical properties such as compressive and diametral tensile strength, solubility and disintegration of these glass-ionomer cements deteriorated with borax addition but fluoride release from them was unaffected.

摘要

制备了添加不同含量（5%-15%）硼砂（Na₂B₄O₇·10H₂O）作为改性剂的传统玻璃离子水门汀。将这些混合物与粉末与液体（P/L）比为1.5:1的聚丙烯酸水溶液进行调拌。测定了这些水门汀的工作时间、凝固时间、抗压强度、径向拉伸强度、溶解度和氟释放量。观察到，添加硼砂后，所得水门汀的工作时间和凝固时间缩短。这些玻璃离子水门汀的某些物理性能，如抗压强度和径向拉伸强度、溶解度和崩解性，随着硼砂的添加而变差，但它们的氟释放不受影响。