United States securities and exchange commission logo October 20, 2023 B. Sonny Bal, M.D. President and Chief Executive Officer Sintx Technologies, Inc. 1885 West 2100 South Salt Lake City, Utah 84119 Re: Sintx Technologies, Inc. Registration Statement on Form S-3 Filed October 12, 2023 File No. 333-274951 Dear B. Sonny Bal, M.D.: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and 461 regarding requests for acceleration. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Please contact Abby Adams at 202-551-6902 with any questions. Sincerely, Division of Corporation Finance Office of Industrial Applications and Services cc: Kevin J. Ontiveros, Esq.