Table 2 Bond strength comparison based on root canal irrigation protocols, zones, and aging status

Root canal irrigation protocol

4

1481.510

370.377

2286.730

< 0.001

Zone

2

352.650

176.325

1088.640

< 0.001

Aging

1

121.290

121.285

748.820

< 0.001

Root canal irrigation protocol*Zone

8

13.320

1.666

10.280

< 0.001

Root canal irrigation protocol*Aging

4

2.040

0.509

3.150

0.015

Zone*Aging

2

0.020

0.009

0.050

0.948

Root canal irrigation protocol*Zone*Aging

8

1.150

0.144

0.890

0.526