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Table 1 The tested materials, their codes, and the number of specimens in each group for the bacterial leakage and bond strength experiments

From: The effect of smear layer removal on E. faecalis leakage and bond strength of four resin-based root canal sealers

Material

Code

Experiment

Leakage (n)

Bond (n)

Apical

Middle

Cervical

AH Plus/GP w/ EDTA

AH-ns

15

8

8

9

AH Plus/GP w/o EDTA

AH-s

15

8

10

10

EndoRez/ w/ EDTA

ER-ns

15

7

8

8

EndoRez/GP w/o EDTA

ER-s

15

7

7

8

RealSeal/Resilon w/ EDTA

RS-ns

15

9

8

9

RealSeal/Resilon w/o EDTA

RS-s

15

9

8

9

MTA Fill Apex/GP w/ EDTA

MTAF-ns

15

8

9

8

MTA Fill Apex/GP w/o EDTA

MTAF-s

15

7

7

7

Composite w/ EDTA

Composite-ns

-

10

9

10

Composite w/o EDTA

Composite-s

-

9

9

10

Positive control w/ EDTA

PC

5a

30b

  

Negative control w/o EDTA

NC

5c

   
  1. n number of specimens, GP gutta-percha, w/ with, w/o without, ns smear layer removed, s smear layer left in situ
  2. aRoot canals obturated with core material only, simulating poor obturation
  3. bTested materials were applied on every third crown with class III standard cavity as described above
  4. cNo root canal filling, just sealing coronal and apical part of the root with the sticky wax