Table 4.
Two by two comparison of OHRQoL scores.
| Grade 3 Experimental |
Grades 4 Experimental |
Grade 3 Control | Grades 4 control |
a & b | a & c | c & d | b & d |
|---|---|---|---|---|---|---|---|
| 1.12 ± 1.69a | 3.88 ± 3.22b | 8.25 ± 3.88c | 20.76 ± 6.64d | 0.001 | 0.001 | 0.001 | 0.001 |
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