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Table 2 Failure frequencies

From: Effect of lubricant substances on the bond strength of relined posts to root canals

 

Type of failure

Total

1

2

3

4

5

Petroleum jelly

Without cleaning

1 (1.3%)

14 (18.7%)

5 (6.7%)

47 (62.7%)

8 (10.7%)

75

With cleaning

2 (2.4%)

23 (27.7%)

6 (7.2%)

47 (56.6%)

5 (6%)

83

Hydrosoluble gel

Without cleaning

0 (0%)

20 (26.7%)

3 (4%)

46 (61.3%)

6 (8%)

75

With cleaning

7 (9.6%)

20 (27.4%)

20 (27.4%)

23 (31.5%)

3 (4.1%)

73

 

Total

10 (3.3%)

77 (25.2%)

34 (11.1%)

163 (53.2%)

22 (7.2%)

306

  1. Classification of failures: (1) adhesive between post and resin cement (no resin cement visible around the post); (2) mixed, with resin cement covering 0–50% of the post surface; (3) mixed, with resin cement covering between 50 and 100% of the post surface; (4) adhesive between resin cement and root dentin (post enveloped by resin cement); and (5) cohesive within the resin cement