Resin-bonded fixed partial dentures as alternatives to conventional fixed treatment.

New compounds of the 1,2,3,4,9,12-hexahydrophenanthrene class, useful as estrogenic and anti-fertility agents, and methods for their preparation. 1 alpha -Ethyl-2 alpha -carboxy-2 beta -methyl-7-methoxy-1,2,3,4,9,12-hexahydrophenanthrene is exemplified as illustrative of the class.