Comparison of the effects of added α- and β-tricalcium phosphate on the basic properties of apatite cement

被引：13
|
作者：
Nakagawa, Akinari
Matsuya, Shigeki
Takeuchi, Akari
Ishikawa, Kunio
机构：
[1] Kyushu Univ, Dept Biomat, Fac Dent Sci, Higashi Ku, Fukuoka 8128582, Japan
[2] Nakagawa Dent Clin, Saga 8410025, Japan
[3] Fukuoka Dent Coll, Dept Dent Engn, Fac Dent Sci, Sawara Ku, Fukuoka 8140193, Japan
来源：
DENTAL MATERIALS JOURNAL | 2007年 / 26卷 / 03期
关键词：
apatite cement; tricalcium phosphate (TCP); hydroxyapatite;
D O I：
10.4012/dmj.26.342
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
Effects of added alpha-tricalcium phosphate (alpha-TCP) and beta-TCP were investigated to shed light on the setting reaction of apatite cement (AC) consisting of tetracalcium phosphate (TTCP) and dicalcium phosphate anhydrous8 (DCPA). Added beta-TCP showed no reactivity, and thus resulted in extended setting time and decreased mechanical strength. In contrast, alpha-TCP dissolved to supply calcium and phosphate ions after initial apatite crystal formation by the reaction of TTCP and DCPA. Although setting time was delayed because alpha-TCP was involved only in the latter reaction of apatite cement, larger apatite crystals were formed due to its addition. As a result of larger apatite crystal formation, the mechanical strength of alpha-TCP-added apatite cement increased by approximately 30%, as compared to alpha-TCP-free apatite cement.
引用
收藏
页码：342 / 347
页数：6
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