Table 5.
Intergroup comparison of resin strip crowns, zirconia crowns, luxa crowns for secondary caries using modified USPHS criteria rating at 3, 6 and 9 months
| Group | 3 months | 6 months | 9 months | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Secondary caries | Alpha | Bravo | Charlie | Delta | Alpha | Bravo | Charlie | Delta | Alpha | Bravo | Charlie | Delta |
| (1) Resin strip crowns | 15 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 11 | 4 | 0 | 0 |
| Percentage | 100% | 100% | 73.3% | 26.6% | ||||||||
| (2) Zirconia crowns | 15 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 15 | 0 | 0 | 0 |
| Percentage | 100% | 100% | 100% | |||||||||
| (3) Luxa crowns | 15 | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 15 | 0 | 0 | 0 |
| Percentage | 100% | 100% | 100% | |||||||||
| x2 value | – | – | 8.780 | |||||||||
| p value | – | – | 0.012* | |||||||||
NS: p > 0.05: not significant; *p < 0.05: significant