Characterization of the phosphate units in rat dentin by solid-state NMR spectroscopy

Yao Hung Tseng; Yi Ling Tsai; Tim W.T. Tsai; John C.H. Chao; Chun Pin Lin; Shih Hao Huang; Chung Yuan Mou; Jerry C.C. Chan

doi:10.1021/cm070531n

Characterization of the phosphate units in rat dentin by solid-state NMR spectroscopy

Yao Hung Tseng, Yi Ling Tsai, Tim W.T. Tsai, John C.H. Chao, Chun Pin Lin, Shih Hao Huang, Chung Yuan Mou, Jerry C.C. Chan

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

30 Citations (Scopus)

Abstract

Dentin samples of the incisor taken from Wistar rats of different ages are studied. A series of physical techniques are used to characterize the samples, with particular emphasis on ³¹P solid-state nuclear magnetic resonance. The structure of incisor dentin in rats can be described as apatite crystallites embedded in an amorphous matrix. We find that 19% of the apatite crystallites contain hydroxyl groups, which are distributed near the surface of the crystallites. The internal region of the crystallites is deficient in hydroxyl groups. As rats mature with age, there are several changes in the chemical composition of the incisor dentin: (i) the water content and phosporous amount in the amorphous matrix decrease; (ii) the amount of the phosphorus species in the apatite crystallites remains the same; and (iii) the loss of phosphorus species is accompanied by approximately the same loss of the calcium content.

Original language	English
Pages (from-to)	6088-6094
Number of pages	7
Journal	Chemistry of Materials
Volume	19
Issue number	25
DOIs	https://doi.org/10.1021/cm070531n
Publication status	Published - Dec 11 2007
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm070531n

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title = "Characterization of the phosphate units in rat dentin by solid-state NMR spectroscopy",

abstract = "Dentin samples of the incisor taken from Wistar rats of different ages are studied. A series of physical techniques are used to characterize the samples, with particular emphasis on 31P solid-state nuclear magnetic resonance. The structure of incisor dentin in rats can be described as apatite crystallites embedded in an amorphous matrix. We find that 19% of the apatite crystallites contain hydroxyl groups, which are distributed near the surface of the crystallites. The internal region of the crystallites is deficient in hydroxyl groups. As rats mature with age, there are several changes in the chemical composition of the incisor dentin: (i) the water content and phosporous amount in the amorphous matrix decrease; (ii) the amount of the phosphorus species in the apatite crystallites remains the same; and (iii) the loss of phosphorus species is accompanied by approximately the same loss of the calcium content.",

author = "Tseng, {Yao Hung} and Tsai, {Yi Ling} and Tsai, {Tim W.T.} and Chao, {John C.H.} and Lin, {Chun Pin} and Huang, {Shih Hao} and Mou, {Chung Yuan} and Chan, {Jerry C.C.}",

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AU - Tseng, Yao Hung

AU - Tsai, Yi Ling

AU - Tsai, Tim W.T.

AU - Chao, John C.H.

AU - Lin, Chun Pin

AU - Huang, Shih Hao

AU - Mou, Chung Yuan

AU - Chan, Jerry C.C.

PY - 2007/12/11

Y1 - 2007/12/11

N2 - Dentin samples of the incisor taken from Wistar rats of different ages are studied. A series of physical techniques are used to characterize the samples, with particular emphasis on 31P solid-state nuclear magnetic resonance. The structure of incisor dentin in rats can be described as apatite crystallites embedded in an amorphous matrix. We find that 19% of the apatite crystallites contain hydroxyl groups, which are distributed near the surface of the crystallites. The internal region of the crystallites is deficient in hydroxyl groups. As rats mature with age, there are several changes in the chemical composition of the incisor dentin: (i) the water content and phosporous amount in the amorphous matrix decrease; (ii) the amount of the phosphorus species in the apatite crystallites remains the same; and (iii) the loss of phosphorus species is accompanied by approximately the same loss of the calcium content.

AB - Dentin samples of the incisor taken from Wistar rats of different ages are studied. A series of physical techniques are used to characterize the samples, with particular emphasis on 31P solid-state nuclear magnetic resonance. The structure of incisor dentin in rats can be described as apatite crystallites embedded in an amorphous matrix. We find that 19% of the apatite crystallites contain hydroxyl groups, which are distributed near the surface of the crystallites. The internal region of the crystallites is deficient in hydroxyl groups. As rats mature with age, there are several changes in the chemical composition of the incisor dentin: (i) the water content and phosporous amount in the amorphous matrix decrease; (ii) the amount of the phosphorus species in the apatite crystallites remains the same; and (iii) the loss of phosphorus species is accompanied by approximately the same loss of the calcium content.

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ER -

Characterization of the phosphate units in rat dentin by solid-state NMR spectroscopy

Abstract

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