Research Article

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

Table 5

Stress distribution pattern in finite element models.

Model 1Model 2Model 3Model 4
STRESS (MPa)VerOblHorVerOblHorVerOblHorVerOblHor

Cortical bone5.153.81.15.33.71.154.83.61.153.651.12
Cancellous bone1.251.150.281.311.20.31.2610.281.251.050.3
PDL1.51.90.41.521.60.421.41.60.381.51.620.4
Dentine root1152.211.55.51.759.55.21.79.64.81.8
Gutta percha0.130.130.021NANANANANANANANANA
Ni-Cr post and coreNANANA3315.39.5NANANANANANA
Fiber postNANANANANANA2610.53.525.510.83.4
Composite in core9.8155.8NANANA5.55.11.5NANANA
Composite coreNANANANANANA3010.54.23110.84.5
Dentine core22.5106.1NANANANANANANANANA

Note: Ver- Vertical loading, Obl- Oblique loading, Hor- Horizontal loading.