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Table 5 Comparison of Benjamı´n Brisen˜ o Marroquı´n classification according to the number of roots and canals in upper and lower molars

From: Evaluation of mandibular and maxillary second molar root canal anatomy in a Turkish subpopulation using CBCT: comparison of Briseno-Marroquin and Vertucci classifications

   

1

1–2

1–2–1

1–2–1–2

1–2–3–2

1–2–3–2–1

1–3

1–3–2

1–3–2–1

1–3–1

1–4

1–4–2-1

2

2–1

2–1–2

2–1–2–1-2–1

2–1–2-1

Upper right

One Root

M

1 (5.0)

   

1 (5.0)

 

1 (5.0)

   

1 (5.0)

 

1 (5.0)

    
 

Two Roots

B

6 (13.4)

1 (2.2)

1 (2.2)

         

17 (37.8)

13 (28.9)

1 (2.2)

  
 

P

43 (95.5)

 

1 (2.2)

          

1 (2.2)

   
 

Three Roots

M

46 (24.9)

13 (7.0)

18 (9.7)

2 (1.1)

        

29 (15.7)

66 (35.7)

6 (3.2)

1 (0.5)

 
 

D

169 (91.4)

4 (2.2)

8 (4.3)

          

3 (1.6)

1 (0.5)

  
 

P

165 (89.2)

6 (3.2)

11 (5.9)

          

2 (1.1)

1 (0.5)

  
 

Four Roots

M

1 (100.0)

            

1 (50.0)

   
 

D

2 (100.0)

                
 

P

1 (50.0)

   

1 (50.0)

            
  

add. Root

1 (50.0)

1 (50.0)

               

Upper left

One Root

M

2 (12.5)

        

1 (6.3)

   

1 (6.3)

   
 

Two Roots

B

7 (13.7)

2 (3.9)

1 (1.9)

         

17 (33.4)

10 (19.6)

   
  

P

43 (84.3)

5 (9.8)

2 (3.9)

         

1 (1.9)

    
 

Three Roots

M

50 (28.4)

12 (6.8)

15 (8.5)

1 (0.6)

        

29 (16.5)

52 (29.5)

11 (6.3)

 

2 (1.1)

  

D

160 (90.9)

6 (3.4)

6 (3.4)

          

4 (2.3)

   
  

P

158 (89.8)

13 (7.4)

4 (2.3)

   

1 (0.6)

          
 

Four Roots

M

2 (50.0)

            

1 (25.0)

   
  

D

4 (100.0)

                
  

P

4 (100.0)

                
  

add. Root

4 (100.0)

                

Lower left

One Root

M

2 (7.4)

3 (11.1)

3 (11.1)

        

1 (3.7)

1 (3.7)

4 (14.8)

   
 

Two Roots

M

2 (0.9)

8 (3.5)

2 (0.9)

1 (0.4)

        

114 (49.4)

90 (39.0)

3 (1.3)

  
  

D

170 (73.6)

16 (6.9)

16 (6.9)

1 (0.4)

 

1 (0.4)

  

1 (0.4)

   

9 (3.9)

15 (6.5)

  

1 (0.4)

 

Three Roots

M

7 (70.0)

1 (10.0)

          

2 (20.0)

    
  

D

5 (50.0)

1 (10.0)

          

2 (20.0)

1 (10.0)

1 (10.0)

  
  

ML

5 (50.0)

1 (10.0)

 

2 (20.0)

1 (10.0)

1 (10.0)

           

Lower right

One Root

M

2 (5.9)

2 (5.9)

4 (11.8)

    

2 (5.9)

 

1 (2.9)

  

4 (11.8)

8 (23.5)

   
 

Two Roots

M

3 (1.3)

5 (2.1)

1 (0.4)

1 (0.4)

  

1 (0.4)

     

125 (52.5)

90 (37.8)

3 (1.3)

 

2 (0.8)

  

D

173 (72.7)

11 (4.6)

19 (8.0)

         

10 (4.2)

22 (9.2)

2 (0.8)

  
 

Three Roots

M

3 (60.0)

           

2 (40.0)

    
  

D

4 (80.0)

           

1 (20.0)

    
  

ML

4 (80.0)

  

1 (10.0)

             
 

2–3

2–3–2

2–3–2–1

2–3–1

2–3–2-1–2

2–4

3

3–1

3–2

3–2–1

3–2–1–2

3–2–3

3–4–2

3–4–3–2

3–4–3

4–3

S.D

x

p*

Upper right

1 (5.0)

 

1 (5.0)

   

3 (15.0)

2 (10.0)

4 (20.0)

  

1 (5.0)

  

1 (5.0)

2 (10.0)

12.5

343.068

0.001

 

1 (2.2)

    

1 (2.2)

 

1 (2.2)

1 (2.2)

  

1 (2.2)

       
   

1 (0.5)

     

2 (1.1)

 

1 (0.5)

        

Upper left

1 (6.3)

 

1 (6.3)

1 (6.3)

  

2 (12.5)

5 (31.3)

2 (12.5)

       

14.3

  
 

1 (1.9)

 

1 (1.9)

 

1 (1.9)

 

2 (3.9)

 

8 (15.7)

1 (1.9)

         
 

2 (1.1)

1 (0.6)

       

1 (0.6)

         
         

1 (25.0)

          

Lower left

 

1 (3.7)

    

1 (3.7)

3 (11.1)

3 (11.1)

2 (7.4)

 

1 (3.7)

 

1 (3.7)

1 (3.7)

 

17.1

  
  

2 (0.9)

1 (0.4)

    

3 (1.3)

3 (1.3)

2 (0.9)

         
        

1 (0.4)

           

Lower right

       

2 (5.9)

7 (20.6)

1 (2.9)

  

1 (2.9)

   

16.8

  
   

2 (0.8)

    

3 (1.3)

2 (0.8)

          
  

1 (0.4)

                 
  1. *Chi-square analysis, significant (p < 0.05)
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