Table 3.

Demographic description of the study sample.

		Tooth			Obtaining Age
		Incisor	Canine	Molar	Mean	SD *
Study (OI) sample (n = 25)	OI-I	4	3	4	9.22	3.34
	OI-III	2	4	4	11.20	3.77
	OI-IV	3	1	-	7.44	1.54
	Total	9	8	8	9.73	3.49
Control sample (n = 30)		8	10	12	10.14	2.64

* SD. standard deviation.