Table 5. Comparison of recovery time and procedure length between fentanyl and remifentanil groups.

Time	Groups	Mean ± SD	t score	P
End to discharge from office	Fentanyl	0:49:53.62 ± 0:18:22.96	-.884	.380
	Remifentanil	0:45:58.38 ± 0:22:17.20
End to discharge from chair	Fentanyl	0:18:12.77 ± 0:09:18.09	-2.008	.048*
	Remifentanil	0:13:21.67 ± 0:12:42.82
Procedure length	Fentanyl	0:31:44.21 ± 0:18:20.14	-1.549	.125
	Remifentanil	0:40:58.72 ± 0:32:51.30

^*P < .05

Notes: End to discharge from chair; The time required for discharge from the chair after completion of dental treatment End to discharge from office; The time required for discharge from the office after completion of dental treatment

SD, standard deviation.