The present invention relates to a glass used as a sintering aid for a resorbable molded body containing calcium phosphate as well as to a method for manufacturing said molded body. According to the invention, the material is .beta.-tricalcium phosphate and the glass has a chemical composition of 68 78% by weight SiO.sub.2, 5 12% by weight MgO and 12 27% by weight Na.sub.2O. The aforesaid molded body is manufactured by melting said glass, grinding it until a grain size D.sub.50 of 0.7 2 .mu.m is achieved and mixing it with .beta.-tricalcium phosphate having a grain size D.sub.50 of 1 7.5 .mu.m, giving the mixture the desired shape and producing the molded body by sintering said mixture at between 1,150 and 1,350.degree. C., wherein the grain size of .beta.-TCP must not be smaller than that of the glass.

 
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