Table 3.
Clinical characteristics
| Factor | control group | experimental group | χ2 | P | |
|---|---|---|---|---|---|
| n | 63 | 66 | |||
| Age | 5.8±1.2 | 5.5±1.1 | |||
| Gender, n (%) | Male | 40(63) | 42(64) | 0 | 0.986 |
| Female | 23(37) | 24(36) | |||
| Location | Maxillary | 30(48) | 23(35) | 2.17 | 0.141 |
| Mandibular | 33(52) | 43(65) | |||
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