Table 2 Influence of the tooth (first or second molar) on the prevalence, type, and side of radix molaris.

From: Prevalence of radix molaris in mandibular molars of a subpopulation of Brazil’s Northeast region: a cross-sectional CBCT study

Variables

Specifications

First molars

Second molars

Total

P value*

n

%

n

%

n

%

Prevalence

With radix

45

2.92*

26

1.47

71

2.14

0.0039

Without radix

1496

97.08

1748

98.53

3244

97.86

 

Total

1541

100.00

1774

100.00

3315

100.00

 

Type

Radix entomolaris

44

97.78

22

84.62

66

92.96*

0.0367

Radix paramolaris

01

2.22

04

15.38*

05

7.04

 

Total

45

100.00

26

100.00

71

100.00

 

Side

Unilateral

21

46.67

26

100.00*

47

66.20*

 < 0.0001

Bilateral

24

53.33

00

0.00

24

33.80

 

Total

45

100.00

26

100.00

71

100.00

 
  1. *Statistical difference, determined by the Pearson chi-square test (P < .05).