Effect and Safety of Painless and Conventional Endoscopic Management of Denture Impaction in the Esophagus

Table 1

Comparison of extraction success rate and operation time between ordinary group and painless group.

Groups	Take out the successful (n, %)	Take out the failure (n, %)	Operating time (min,  ± s)
Normal group	35 (87.5%)	5 (12.5%)	17.55 ± 1.77
Painless group	37 (97.3%)	1 (2.7%)	15.33 ± 1.93
χ^2 (t)	1.464		5.290
	0.226		0.000