Research Article
In Vitro Evaluation of the Effect of Different Luting Cements and Tooth Preparation Angle on the Microleakage of Zirconia Crowns
Table 3
Frequency of microleakage scores in each experimental condition (n = 7).
| Tapering degree | Microleakage score | Unicem, n (%) | Ultimate, n (%) | GC, n (%) | Hoffmann, n (%) | value (Kruskal–Wallis) |
| 6° | 0 | 2 (28.6) | 4 (57.1) | 2 (28.6) | 0 | .007 | 1 | 1 (14.3) | 1 (14.3) | 0 | 1 (14.3) | 2 | 1 (14.3) | 1 (14.3) | 0 | 0 | 3 | 1 (14.3) | 1 (14.3) | 2 (28.6) | 0 | 4 | 1 (14.3) | 0 | 2 (28.6) | 0 | 5 | 1 (14.3) | 0 | 1 (14.3) | 4 (57.1) | 6 | 0 | 0 | 0 | 2 (28.6) |
| 12° | 0 | 3 (42.9) | 7 (100) | 2 (28.6) | 1 (14.3) | .006 | 1 | 2 (28.6) | 0 | 2 (28.6) | 0 | 2 | 1 (14.3) | 0 | 0 | 1 (14.3) | 3 | 1 (14.3) | 0 | 2 (28.6) | 2 (28.6) | 4 | 0 | 0 | a1 (14.3) | 2 (28.6) | 5 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 1 (14.3) |
| value (Mann–Whitney) | 0.318 | 0.314 | 0.447 | 0.190 | |
|
|