Table 2.

Regression equations of the calibration curves, detection limits, and retention times of the monomers.

	Regression equation	R 2	LOD (μg/mL)	LOQ (μg/mL)	Retention time (minute)
Bis-GMA	y = 0.0148x − 1.7497	0.9978	0.680	2.053	2.85
TEGDMA	y = 0.0229x − 1.012	0.9997	0.788	2.363	2.32
HEMA	y = 0.0235x–19.753	0.9999	0.482	1.445	1.82
UDMA	y = 0.0351x–0.1227	0.9999	0.412	1.236	2.59

LOD: limit of detection; LOQ: limit of quantitation.