SINTX Technologies, Inc. Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Assumptions Used in Estimating Fair Value (Details)

Fair Value Measurements - Schedule of Assumptions Used in Estimating Fair Value (Details) - Common Stock Warrants [Member]	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Black-Scholes-Merton Valuation Model [Member] \| Weighted-Average Risk-Free Interest Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assumptions, measurement input, percentages	2.23%	2.51%
Black-Scholes-Merton Valuation Model [Member] \| Weighted-Average Expected Life [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assumptions, measurement input, term	4 years 1 month 9 days	10 months 25 days
Black-Scholes-Merton Valuation Model [Member] \| Expected Dividend Yield [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assumptions, measurement input, percentages	0.00%	0.00%
Black-Scholes-Merton Valuation Model [Member] \| Weighted-Average Expected Volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assumptions, measurement input, percentages	68.00%	157.00%
Monte Carlo Simulation Valuation Model [Member] \| Weighted-Average Risk-Free Interest Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assumptions, measurement input, percentages	2.42%	2.46%
Monte Carlo Simulation Valuation Model [Member] \| Weighted-Average Expected Life [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assumptions, measurement input, term	2 years 7 months 28 days	3 years 1 month 6 days
Monte Carlo Simulation Valuation Model [Member] \| Expected Dividend Yield [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assumptions, measurement input, percentages	0.00%	0.00%
Monte Carlo Simulation Valuation Model [Member] \| Weighted-Average Expected Volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assumptions, measurement input, percentages	68.00%	68.00%