A newly developed dental porcelain was prepared by using local
Algerian raw materials.
The new selected composition was 75 wt.% feldspar, 20 wt.% quartz
and 5 wt.% kaolin. Additionally, the effect of temperature and boric
oxide (B2O3) addition on sintering and mechanical properties of DP
was studied. It has been found that the sintering temperature was
lowered down by about 25 and 50 °C for 3 and 5 wt.% B2O3additions, respectively. The relative density, the 3PFS and Martens micro-hardness
values of dental porcelains sintered at 1200 °C for 2 h were
2.47 g/cm
3
, and 149 MPa and 2600 MPa, respectively. Finally, it has
also been found that B2O3additions provoke a glass matrix composition
variation which hindered the leucite formation during sintering, knowing that the leucite is the most significant phase especially when DP mechanical properties are concerned.
References
A newly developed dental porcelain was prepared by using localAlgerian raw materials.The new selected composition was 75 wt.% feldspar, 20 wt.% quartzand 5 wt.% kaolin. Additionally, the effect of temperature and boricoxide (B2O3) addition on sintering and mechanical properties of DPwas studied. It has been found that the sintering temperature waslowered down by about 25 and 50 °C for 3 and 5 wt.% B2O3additions, respectively. The relative density, the 3PFS and Martens micro-hardnessvalues of dental porcelains sintered at 1200 °C for 2 h were2.47 g/cm3, and 149 MPa and 2600 MPa, respectively. Finally, it hasalso been found that B2O3additions provoke a glass matrix compositionvariation which hindered the leucite formation during sintering, knowing that the leucite is the most significant phase especially when DP mechanical properties are concerned.References
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