Characterization of Rare-Earth Oxide Photoactivated Calcium Phosphate Minerals for Resurfacing Teeth

被引：8

作者：

Elmadani, Esam ^{[1
]}

Jha, Animesh ^{[1
]}

Perali, Tejaswini ^{[1
]}

Jappy, Christine ^{[2
]}

Walsh, David ^{[2
]}

Leburn, Christopher ^{[2
,3
]}

Brown, Tom ^{[2
]}

Sibbett, Wilson ^{[2
]}

Duggal, Monty ^{[4
]}

Toumba, Jack ^{[4
]}

机构：

[1] Univ Leeds, Inst Mat Res, Leeds LS2 9JT, W Yorkshire, England

[2] Univ St Andrews, Sch Phys & Astron, Scottish Univ Phys Alliance, St Andrews KY16 9SS, Fife, Scotland

[3] Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland

[4] Univ Leeds, Leeds Dent Inst, Div Oral Biol, Leeds LS2 9LU, W Yorkshire, England

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2012年 / 95卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

HYDROXYAPATITE; HYPERSENSITIVITY; TEMPERATURE; MONETITE; CAHPO4;

D O I：

10.1111/j.1551-2916.2012.05324.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Calcium phosphate (CaP) minerals were synthesized with photo-active erbium oxide (Er2O3), and acid-resistant phase mixture of aluminum phosphate (AlPO4) and calcium fluoride (CaF2) at room temperature via precipitation from the aqueous solution of hydrated calcium nitrate Ca(NO3)(2)center dot 4H(2)O and ammonium hydrogen phosphate (NH4)(2)HPO4. The dominant precipitated phases, characterized by X-ray powder diffraction, confirmed the presence of monetite (CaHPO4) and brushite (CaHPO(4 center dot)2H(2)O) at room temperature. The microstructural analysis showed the presence of platelet-like features of monetite and brushite, which were tested for occlusion of dentinal tubules via irradiation with a 100 fs pulse duration laser, operating at 1520 nm at 2.5 GHz repetition rate. The SEM analysis of dentinal tubule over the occluded surface showed a continuum of 10 mu m layer, which covered several 100s of micrometer surface. The results open the opportunity for dentinal tubule occlusion via ultrafast laser sintering using acid-resistant minerals.

引用

页码：2716 / 2724

页数：9

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