1. Hardness characteristic of dental porcelain synthesized from Indonesian natural sand.
- Author
-
Gunawan, J., Taufik, D., Takarini, V., Hasratiningsih, Z., Ramelan, A., Ramahdita, Wulan, Dhelika, and Whulanza
- Subjects
- *
DENTAL fillings , *BIOMEDICAL materials , *BIOCERAMICS , *DENTAL resins , *VICKERS hardness - Abstract
Porcelain has been one of dental biomaterials which can be used to restore tooth structure. Veneer and jacket crown were the examples of dental porcelain restoration. Since wear resistance is related to the strength on its surface, then Vickers Hardness Test of the synthesized porcelain was applied subsequently. If the porcelain hardness number is too high, it should be considered that an abrasion of the opposing teeth could occur. On previous research, dental porcelain had been successfully synthesized from Indonesian natural sand. In this experiment, 5 samples were prepared from a mixture of 65w/o Pangaribuan feldspar, 25w/o Belitung silica, 5w/o Sukabumi kaolinite, and 5w/o potassium salt. This synthesized porcelain samples were invested on 5 cm diameter resin each. A kilogram of load was placed on top of each sample for 10 seconds on 7 different indented areas using ZwickRoell Indentec ZHVμ Micro Vickers. The average hardness number of synthesized dental porcelain made from Indonesian natural sand was 936.06 VHN which was higher than the average hardness number of porcelain restoration. In conclusion of the hardness test, synthesized dental porcelain made from Indonesian natural sand can potentially be used as a core, which shall support hardness and strength of the crown restoration. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF