
                                                                    EXHIBIT 32.1


                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, James D. Durham,  Chairman and Chief Executive Officer of Crdentia Corp. (the
"Registrant"),  do hereby certify in accordance with 18 U.S.C.  1350, as adopted
pursuant to Section 906 of the  Sarbanes-Oxley  Act of 2002,  that,  based on my
knowledge:

      (1)   the Annual Report on Form 10-KSB/A of the Registrant,  to which this
            certification  is  attached  as an  exhibit  (the  "Report"),  fully
            complies  with the  requirements  of  Section  13(a) or 15(d) of the
            Securities Exchange Act of 1934; and

      (2)   the  information  contained in the Report  fairly  presents,  in all
            material respects, the financial condition and results of operations
            of the Registrant.

Dated:  April 29, 2005


/s/ James D. Durham,
-----------------------------------
James D. Durham,
Chairman and Chief Executive Officer
(Principal Executive Officer)

