Apatite glass ceramic
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United States of America Patent
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Jun 7, 1994
Grant Date -
N/A
app pub date -
Oct 10, 1991
filing date -
Feb 12, 1990
priority date (Note) -
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Abstract
The invention relates to an apatite glass ceramic which can be used as a material in medicine and as an inorganic component of a glass ionomer cement. The apatite glass ceramic comprises in wt-%) 15-40% SiO.sub.2, 15-35% Al.sub.2 O.sub.3, 12-30% CaO, 6-25% P.sub.2 O.sub.5, 2.5-15% F.sup.-, 0-18% R.sub.2 O, wherein R.sub.2 O is an alkali oxide. The apatite glass ceramic comprises a crystal phase which contains apatite.
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