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不同发育类型的牙根测量结果
Dimensions of different morphology root
| Dimensions of different morphology root | Types of root morphology | P | |||
| Ⅰ (n=24) | Ⅱ (n=16) | Ⅲ (n=11) | Ⅳ (n=13) | ||
| Increase of root length/% | 32.51 | 5.35 | 16.78 | 5.94 | ＜0.01 |
| Increase of root canal wall thickness/% | 53.53 | 39.16 | 43.19 | 12.29 | ＜0.01 |
