Variables		n	%
Gender	Female	166	57.6
Gender	Male	122	42.4
Instruction level	High school	75	26.0
	Incomplete higher education	40	13.9
	Higher education	173	60.1
Kind of service	Public	136	47.2
Kind of service	Private	152	52.8
Final age	Until 25 years	138	47.9
Final age	>25 years	150	52.1
DHC-IOTN	Without or low need	109	37.8
DHC-IOTN	Moderate or high need	179	62.2
AC-IOTN	Without or low need	160	55.6
AC-IOTN	Moderate or high need	128	44.4
Chief complaint	Bad tooth position	152	52.8
	Space between teeth	93	32.3
	Deformity of the mouth and face	22	7.6
	Others	21	7.3
Speech therapy	Yes	89	30.9
Speech therapy	No	199	69.1
Satisfactory use of restraint	Yes	256	88.9
Satisfactory use of restraint	No	32	11.1