Roots of trigeminal nerve

例句：

1. 1. The patient's condition is complicated by the trigeminal nerve involvement.
   病人的状况由于三叉神经的受累而变得复杂。
2. 2. The dentist performed a root canal treatment on the affected tooth.
   牙医对那颗受影响的牙齿进行了根管治疗。
3. 3. The neurologist specializes in treating conditions affecting the trigeminal nerve.
   这位神经学家专门治疗影响三叉神经的条件。