A Materialized View Rebuild Built-in?

Is there a built in process to rebuild a materialzed view as opposed to refreshing the MV? 

I can use the following to refresh an MV, but cannot find a reference to one to rebuild the MV if the underlying structure has changed.  In my case it is a single table

     DBMS_MVIEW.REFRESH('<materialized view name>');

Or, do I need to drop the MV and use the create statement to rebuild it?

thanks

Alan