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Shynthesis and Characterizations of Calcium Hydroxyapatite Derived from Crabs Shells (Portunus pelagicus) and Its Potency in Safeguard against to Dental Demineralizations.

Raya I, Mayasari E, Yahya A, Syahrul M, Latunra AI - Int J Biomater (2015)

Bottom Line: Calcination was conducted to crab's shells of Portunus pelagicus at temperature of 1000°C for 5 hours.The results of calcination was reacted with (NH4)2HPO4, then dried at 110°C for 5 hours.The results showed that the rate of tooth demineralization in acetate buffer decreased significantly with the provision of hydroxyapatite into a solution where the addition of the magnitude of hydroxyapatite is greater decrease in the rate of tooth demineralization.

View Article: PubMed Central - PubMed

Affiliation: Chemistry Department, Faculty of Mathematics and Natural Sciences, Hasanuddin University, Makassar 90245, Indonesia.

ABSTRACT
Crab's shells of Portunus pelagicus species were used as raw materials for synthesis of hydroxyapatite were used for protection against demineralization of teeth. Calcination was conducted to crab's shells of Portunus pelagicus at temperature of 1000°C for 5 hours. The results of calcination was reacted with (NH4)2HPO4, then dried at 110°C for 5 hours. Sintering was conducted to results of precipitated dried with temperature variations 400-1000°C for a hour each variation of temperature then characterized by X-ray diffractometer and FTIR in order to obtain the optimum formation temperature of hydroxyapatite is 800°C. The hydroxyapatite is then tested its effectiveness in protection against tooth demineralization using acetate buffer pH 5.0 with 1 M acetic acid concentration with the addition of hydroxyapatite and time variation of immersion. The results showed that the rate of tooth demineralization in acetate buffer decreased significantly with the provision of hydroxyapatite into a solution where the addition of the magnitude of hydroxyapatite is greater decrease in the rate of tooth demineralization.

No MeSH data available.


Related in: MedlinePlus

The influence of sintering temperatures on the formation of hydroxyapatite phase.
© Copyright Policy - open-access
Related In: Results  -  Collection


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fig4: The influence of sintering temperatures on the formation of hydroxyapatite phase.

Mentions: The optimum temperature formation of hydroxyapatite was determined by calculation of the probability of the sample phase from the XRD results analysis according to JCPDS standard data, which, JCPDS; 24-0033 is standard data for Ca10(PO4)6(OH)2; 09-0169 for β-Ca3(PO4)2; 29-0359 for α-Ca3(PO4)2, 35-0180 α-Ca3(PO4)2; 35-0180 for Ca10(PO4)6CO3(OH)2 and 19-0272 standard data for Ca10(PO4)6CO3(OH)2. Figures 3 and 4 showed that the temperature is closely associated with the formation of hydroxyapatite phase. In the both graphs it can be seen that the maximum intensity of the phase formation of hydroxyapatite has been found by sintering at temperature of 800°C, it means the optimum temperature of hydroxyapatite formation is 800°C, and then this result will be used for another application.


Shynthesis and Characterizations of Calcium Hydroxyapatite Derived from Crabs Shells (Portunus pelagicus) and Its Potency in Safeguard against to Dental Demineralizations.

Raya I, Mayasari E, Yahya A, Syahrul M, Latunra AI - Int J Biomater (2015)

The influence of sintering temperatures on the formation of hydroxyapatite phase.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4508471&req=5

fig4: The influence of sintering temperatures on the formation of hydroxyapatite phase.
Mentions: The optimum temperature formation of hydroxyapatite was determined by calculation of the probability of the sample phase from the XRD results analysis according to JCPDS standard data, which, JCPDS; 24-0033 is standard data for Ca10(PO4)6(OH)2; 09-0169 for β-Ca3(PO4)2; 29-0359 for α-Ca3(PO4)2, 35-0180 α-Ca3(PO4)2; 35-0180 for Ca10(PO4)6CO3(OH)2 and 19-0272 standard data for Ca10(PO4)6CO3(OH)2. Figures 3 and 4 showed that the temperature is closely associated with the formation of hydroxyapatite phase. In the both graphs it can be seen that the maximum intensity of the phase formation of hydroxyapatite has been found by sintering at temperature of 800°C, it means the optimum temperature of hydroxyapatite formation is 800°C, and then this result will be used for another application.

Bottom Line: Calcination was conducted to crab's shells of Portunus pelagicus at temperature of 1000°C for 5 hours.The results of calcination was reacted with (NH4)2HPO4, then dried at 110°C for 5 hours.The results showed that the rate of tooth demineralization in acetate buffer decreased significantly with the provision of hydroxyapatite into a solution where the addition of the magnitude of hydroxyapatite is greater decrease in the rate of tooth demineralization.

View Article: PubMed Central - PubMed

Affiliation: Chemistry Department, Faculty of Mathematics and Natural Sciences, Hasanuddin University, Makassar 90245, Indonesia.

ABSTRACT
Crab's shells of Portunus pelagicus species were used as raw materials for synthesis of hydroxyapatite were used for protection against demineralization of teeth. Calcination was conducted to crab's shells of Portunus pelagicus at temperature of 1000°C for 5 hours. The results of calcination was reacted with (NH4)2HPO4, then dried at 110°C for 5 hours. Sintering was conducted to results of precipitated dried with temperature variations 400-1000°C for a hour each variation of temperature then characterized by X-ray diffractometer and FTIR in order to obtain the optimum formation temperature of hydroxyapatite is 800°C. The hydroxyapatite is then tested its effectiveness in protection against tooth demineralization using acetate buffer pH 5.0 with 1 M acetic acid concentration with the addition of hydroxyapatite and time variation of immersion. The results showed that the rate of tooth demineralization in acetate buffer decreased significantly with the provision of hydroxyapatite into a solution where the addition of the magnitude of hydroxyapatite is greater decrease in the rate of tooth demineralization.

No MeSH data available.


Related in: MedlinePlus