Table 1.
Intergroup test of significance for resin-modified glass ionomer cement, nanohybrid and compomer using unpaired t-test at different intervals
| Group | Preinstrumentation |
Postinstrumentation |
Postpolishing |
|||
|---|---|---|---|---|---|---|
| Group I (manual scaling) | Group II (ultrasonic scaling) | Group I (manual scaling) | Group II (ultrasonic scaling) | Group I (manual scaling) | Group II (ultrasonic scaling) | |
| Resin modified GIC | ||||||
| Mean±SD | 0.11±0.05 | 0.14±0.09 | 0.18±0.05 | 0.49±0.20 | 0.12±0.04 | 0.16±0.09 |
| Mean difference | −0.02 | −0.31 | −0.04 | |||
| t-test | −0.721 | −4.665 | −1.344 | |||
| P | 0.480 | 0.001* | 0.196 | |||
| Nanohybrid composite | ||||||
| Mean±SD | 0.14±0.08 | 0.12±0.09 | 0.24±0.15 | 0.14±0.07 | 0.15±0.05 | 0.13±0.02 |
| Mean difference | −0.02 | −0.10 | −0.02 | |||
| t-test | 0.471 | 1.879 | 1.009 | |||
| P | 0.643 | 0.077 | 0.326 | |||
| Compomer | ||||||
| Mean±SD | 0.12±0.04 | 0.09±0.04 | 0.23±0.08 | 0.13±0.05 | 0.13±0.05 | 0.10±0.05 |
| Mean difference | −0.03 | −0.10 | −0.03 | |||
| t-test | 1.518 | 3.511 | 1.192 | |||
| P | 0.146 | 0.002* | 0.249 | |||
*A significant difference at 0.05 level of significance (P<0.05). SD: Standard deviation