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

Esam Elmadani; Animesh Jha; Tejaswini Perali; Christine Jappy; David Walsh; Christopher Leburn; Tom Brown; Wilson Sibbett; Monty Duggal; Jack Toumba

doi:10.1111/j.1551-2916.2012.05324.x

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

Esam Elmadani, Animesh Jha^*, Tejaswini Perali, Christine Jappy, David Walsh, Christopher Leburn, Tom Brown, Wilson Sibbett, Monty Duggal, Jack Toumba

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	2716-2724
Number of pages	9
Journal	Journal of the American Ceramic Society
Volume	95
Issue number	9
DOIs	https://doi.org/10.1111/j.1551-2916.2012.05324.x
Publication status	Published - Sept 2012

Keywords

HYDROXYAPATITE
HYPERSENSITIVITY
TEMPERATURE
MONETITE
CAHPO4

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10.1111/j.1551-2916.2012.05324.x

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@article{58d369efb46444e193f348ae0b0e4436,

title = "Characterization of Rare-Earth Oxide Photoactivated Calcium Phosphate Minerals for Resurfacing Teeth",

abstract = "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.",

keywords = "HYDROXYAPATITE, HYPERSENSITIVITY, TEMPERATURE, MONETITE, CAHPO4",

author = "Esam Elmadani and Animesh Jha and Tejaswini Perali and Christine Jappy and David Walsh and Christopher Leburn and Tom Brown and Wilson Sibbett and Monty Duggal and Jack Toumba",

note = "The authors acknowledge the ﬁnancial supports for the EPSRC studentship, the RCUK Basic Technology (EP/D048672) and EPSRC grants (EP/E06644X/1).",

year = "2012",

month = sep,

doi = "10.1111/j.1551-2916.2012.05324.x",

language = "English",

volume = "95",

pages = "2716--2724",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

number = "9",

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TY - JOUR

T1 - Characterization of Rare-Earth Oxide Photoactivated Calcium Phosphate Minerals for Resurfacing Teeth

AU - Elmadani, Esam

AU - Jha, Animesh

AU - Perali, Tejaswini

AU - Jappy, Christine

AU - Walsh, David

AU - Leburn, Christopher

AU - Brown, Tom

AU - Sibbett, Wilson

AU - Duggal, Monty

AU - Toumba, Jack

N1 - The authors acknowledge the ﬁnancial supports for the EPSRC studentship, the RCUK Basic Technology (EP/D048672) and EPSRC grants (EP/E06644X/1).

PY - 2012/9

Y1 - 2012/9

N2 - 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.

AB - 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.

KW - HYDROXYAPATITE

KW - HYPERSENSITIVITY

KW - TEMPERATURE

KW - MONETITE

KW - CAHPO4

U2 - 10.1111/j.1551-2916.2012.05324.x

DO - 10.1111/j.1551-2916.2012.05324.x

M3 - Article

SN - 0002-7820

VL - 95

SP - 2716

EP - 2724

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 9

ER -

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

Abstract

Keywords

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