英语语法分析

I wish I were your second derivative so I could fill your concavities.

我希望我是你的另一个衍生物，那么我就可以填充你的凹陷了。

The formation of these microcracks is closely related to local conditions of the Tusion line concavities.

熔合线凹入处的局部条件直接影响微裂纹的形成。

Conclusion: Root trunk concavities may cause furcation involvement and reduce the efficacy of periodontal therapy.

结论：根柱凹陷可能是造成根分叉病变的原因，并可能是导致牙周治疗效果欠佳的原因。