Quarterly report pursuant to Section 13 or 15(d)


Cover - shares
9 Months Ended
Sep. 30, 2021
Nov. 08, 2021
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Sep. 30, 2021  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2021  
Current Fiscal Year End Date --12-31  
Entity File Number 001-33624  
Entity Registrant Name SINTX Technologies, Inc.  
Entity Central Index Key 0001269026  
Entity Tax Identification Number 84-1375299  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 1885 West 2100 South  
Entity Address, City or Town Salt Lake City  
Entity Address, State or Province UT  
Entity Address, Postal Zip Code 84119  
City Area Code (801)  
Local Phone Number 839-3500  
Title of 12(b) Security Common Stock  
Trading Symbol SINT  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   24,707,574