Clinical Evaluation for Space Maintainer after Unilateral Loss of Primary First Molar in the Early Mixed Dentition Stage

Table 1

Extraction and nonextraction side with occlusion type.

	Occlusion type	Extraction side (N)	Extraction side (percentage) (%)	Control side (number)	Control side (percentage) (%)
Molar relationship	Class I	12	24	16	32
	Class II	13	26	10	20
	Class III	1	2	0	0
	Mesial step	13	26	13	26
	Distal step	8	16	7	14
	Flush terminal plane	3	6	4	8
Canine relationship	Class I	30	60	36	72
	Class II	13	26	8	16
	Class III	7	14	6	12