Polymeric calcium phosphate cements derived from poly(methyl vinyl ether-maleic acid).
Polymeric calcium phosphate cements derived from poly(methyl vinyl ether-maleic acid).
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聚合磷酸钙骨水泥源自聚（甲基乙烯基醚-马来酸）。
DOI：
10.1016/s0109-5641(96)80056-x
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Chow,LC
中科院分区：
文献类型：
--
作者：
Matsuya,Y;Antonucci,JM;Matsuya,S;Takagi,S;Chow,LC
目的研究磷酸氢钙/磷酸四钙(PMVE-MA)与聚甲基乙烯基醚-马来酸(PMVE-MA)混合粉末制备聚磷酸钙骨水泥的可行性，并对其固化反应进行研究。方法通过机械强度测试、红外光谱和X射线衍射仪分析评价聚合物骨水泥的固化反应过程，并与水硬性磷酸钙骨水泥进行比较。结果PMVE-Ma混合粉和25~30wt%PMVE-Ma水溶液在37℃蒸馏水中放置24 h后具有较高的机械强度，其硬化机理取决于PMVE-Ma的羧基与混合粉，特别是其磷酸四钙之间的酸碱反应。聚磷酸钙骨水泥中未检测到羟基磷灰石的形成，PMVE-MA与混合粉的竞争反应明显抑制了羟基磷灰石的形成。意义：聚磷酸钙骨水泥的成骨反应明显快于水硬性磷酸钙骨水泥，慢于混合粉和聚丙烯酸等多酸。聚合物粘固剂的特性表明，该材料可用于窝洞衬里或根管封闭术。
ObjectivesThe purpose of this study was to assess the feasibility of forming polymeric calcium phosphate cements from a mixed powder of dicalcium phosphate/tetracalcium phosphate or only tetracalcium phosphate and poly(methyl vinyl ether-maleic acid) (PMVE-Ma), and to study their setting reaction.MethodsThe setting reaction process of the polymeric cements was evaluated by mechanical strength tests, infrared spectroscopy and x-ray diffraction analysis and compared with that of a water-setting calcium phosphate cement. The mechanical strength data were analyzed using ANOVA and Scheffé's multiple comparisons test.ResultsCements prepared from the mixed powder and 25–30 wt% aqueous solutions of PMVE-Ma had high mechanical strength after 24 h storage in distilled water at 37°C. The hardening mechanism dependended on an acid-base reaction between the carboxyl groups of PMVE-Ma and the mixed powder, especially its tetracalcium phosphate component. The formation of hydroxyapatite in the polymeric calcium phosphate cement was not detected and is apparently inhibited as a result of the competing reaction of PMVE-Ma with the mixed powder.SignificanceThe cement-forming reaction was significantly faster than that of a water-setting calcium phosphate cement and slower than that observed with the mixed powder and polyacids such as poly(acrylic acid). The characteristics of the polymeric cements suggest that the materials may be useful in cavity lining or endodontic sealing.
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由磷酸四钙/磷酸二钙混合物在水凝胶中形成羟基磷灰石。
DOI：
--
发表时间：
1989
期刊：
The Dental Journal of Nihon University
影响因子：
--
作者：
A. Sugawara;J. Antonucci;S. Takagi;L. C. Chow;M. Ohashi
通讯作者：
M. Ohashi
影响因子：
5
作者：
MIYAZAKI, K;HORIBE, T;CHOW, LC
通讯作者：
CHOW, LC
美国国家标准协会/美国牙科协会关于聚羧酸锌水泥的第 61 号规范。
DOI：
--
发表时间：
1980
期刊：
The Journal of the American Dental Association (1939)
影响因子：
--
作者：
Instruments;Equipment
通讯作者：
Equipment
粘固水泥：回顾和比较。
影响因子：
3.3
作者：
G. Oilo
通讯作者：
G. Oilo