Table 4.

Prevalence of different Vertucci types of canal configuration in mesial and distal root canals of mandibular first molar

Types of canal configuration (Vertucci)	Mesial Root	Distal Root
	Pooled prevalence: % (95% CI)	Pooled prevalence: % (95% CI)
Type I	0.132 (0—0.360)	0.830 (0.623—0.880)
Type II	0.110 (0—0.329)	0.034 (0—0.095)
Type III	0.049 (0—0.227)	0.015 (0—0.060)
Type IV	0.587 (0.186—0.627)	0.024 (0—0.077)
Type V	0.141 (0—0.373)	0.061(0.003—0.150)
Type VI	0.073 (0—0.271)	0.027 (0—0.082)
Type VII	0.029 (0—0.183)	–
Type VIII	0.034 (0—0.195)	–