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Oral microecological environment in the two groups [n (%)]
| Categories | Reference group (n=55) | Research group (n=58) | χ2 value | P value |
|---|---|---|---|---|
| Cocci | 28 (50.91) | 16 (27.59) | 6.459 | 0.011 |
| Spirochetes | 13 (23.64) | 5 (8.62) | 4.753 | 0.029 |
| Fusobacterium nucleatum | 21 (38.18) | 12 (20.69) | 4.178 | 0.041 |
| Porphyromonas | 14 (25.45) | 6 (10.34) | 4.425 | 0.035 |
| Actinobacillus actinomycetemcomitans | 22 (40.00) | 12 (20.69) | 5.004 | 0.025 |
