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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

FT-IR spectra of hydroxyapatite (HA) were sintered at 800°C.
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fig8: FT-IR spectra of hydroxyapatite (HA) were sintered at 800°C.

Mentions: The FT-IR spectra of sample were sintered at a temperature of 800°C (Figure 8) showing that hydroxyapatite is the dominant compound formed. The stretching frequencies of PO4 group are indicated by 1120.64 cm−1, 1091.71 cm−1, 1043.49 cm−1 (υ3), 993.34 cm−1, 877.61 cm−1 (υ1), 603.72 cm−1, 565.14 cm−1, (υ4), and 370.33 cm−1 (υ2). And a sharp spectrum in the area of 3570.24 cm−1 indicates the presence of free -OH and 3427.51 cm−1 indicating -OH bounded, and this is indicating that the dominant compound is Ca10(PO4)6(OH)2. While area of 1654.92 cm−1, 1458.18 cm−1, and 1421.54 cm−1 indicates the presence of carbonate groups (CO3−) it can be identified as Ca10(PO4)6CO3 and Ca10(PO4)6CO3(OH)2 which has not been transformed into Ca10(PO4)6(OH)2 during the sintering process.


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)

FT-IR spectra of hydroxyapatite (HA) were sintered at 800°C.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig8: FT-IR spectra of hydroxyapatite (HA) were sintered at 800°C.
Mentions: The FT-IR spectra of sample were sintered at a temperature of 800°C (Figure 8) showing that hydroxyapatite is the dominant compound formed. The stretching frequencies of PO4 group are indicated by 1120.64 cm−1, 1091.71 cm−1, 1043.49 cm−1 (υ3), 993.34 cm−1, 877.61 cm−1 (υ1), 603.72 cm−1, 565.14 cm−1, (υ4), and 370.33 cm−1 (υ2). And a sharp spectrum in the area of 3570.24 cm−1 indicates the presence of free -OH and 3427.51 cm−1 indicating -OH bounded, and this is indicating that the dominant compound is Ca10(PO4)6(OH)2. While area of 1654.92 cm−1, 1458.18 cm−1, and 1421.54 cm−1 indicates the presence of carbonate groups (CO3−) it can be identified as Ca10(PO4)6CO3 and Ca10(PO4)6CO3(OH)2 which has not been transformed into Ca10(PO4)6(OH)2 during the sintering process.

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