Fracture Resistance and Stress Distribution Pattern of Different Posts-Core Systems in Immature Teeth: An In Vitro Study and 3D Finite Element Analysis

Table 4

Failure pattern observed for experimental groups.

Failure mode	Group 1 (N = 20)	Group 2 (N = 20)	Group 3 (N = 20)	Group 4 (N = 20)
Fracture of post and/or core	—	—	20 (100%)	17 (85%)
Debonding at post/core/tooth interface	—	—	—	3 (15%)
Root fracture	—	20 (100%)	—	—
Fracture of coronal tooth structure	20 (100%)