Analysis of Root Canal Anatomy of Mandibular Permanent Incisors in Saudi Subpopulation: A Cone-Beam Computed Tomography (CBCT) Study

Table 5

The prevalence of canal number and different types of canal configurations among different age groups.

Age range groups (years old)	Prevalence of teeth (%)
	Number of canals		Canal configurations
	One canal	Two canals	Type I	Type II	Type III	Type IV	Type V
18–20	187 (13.64%)	164 (11.97%)	188 (13.72%)	38 (2.77%)	101 (7.37%)	9 (0.65%)	15 (1.09%)
21–40	367 (26.78%)^∗	250 (18.24%)	367 (26.78%)	16 (1.16%)	187 (13.64%)	1 (0.072%)	46 (3.35%)
>40	252 (18.39%)	150 (10.94%)	251 (18.32%)	34 (2.48%)	99 (7.22%)	0	18 (1.31%)

Significant at