International Journal of Dentistry / 2022 / Article / Tab 5 / 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 1 Model 2 Model 3 Model 4 STRESS (MPa) Ver Obl Hor Ver Obl Hor Ver Obl Hor Ver Obl Hor Cortical bone 5.15 3.8 1.1 5.3 3.7 1.15 4.8 3.6 1.1 5 3.65 1.12 Cancellous bone 1.25 1.15 0.28 1.31 1.2 0.3 1.26 1 0.28 1.25 1.05 0.3 PDL 1.5 1.9 0.4 1.52 1.6 0.42 1.4 1.6 0.38 1.5 1.62 0.4 Dentine root 11 5 2.2 11.5 5.5 1.75 9.5 5.2 1.7 9.6 4.8 1.8 Gutta percha 0.13 0.13 0.021 NA NA NA NA NA NA NA NA NA Ni-Cr post and core NA NA NA 33 15.3 9.5 NA NA NA NA NA NA Fiber post NA NA NA NA NA NA 26 10.5 3.5 25.5 10.8 3.4 Composite in core 9.8 15 5.8 NA NA NA 5.5 5.1 1.5 NA NA NA Composite core NA NA NA NA NA NA 30 10.5 4.2 31 10.8 4.5 Dentine core 22.5 10 6.1 NA NA NA NA NA NA NA NA NA
Note: Ver- Vertical loading, Obl- Oblique loading, Hor- Horizontal loading.