The bacterial child of dead marrow tooth can pass a pointed aperture or side rootlet canal causes a pointed week pathological change or root bifurcate pathological change .
死髓牙的细菌产物可通过根尖孔或侧支根管引起根尖周病变或根分叉病变。
Conclusion : the method is simple , rapid , and accurate . The content of polysaccharide in rootlet is lowest , and monosaccharide compositions in rootlet are significantly different from parent root and daughter root .
