A Comparative Study of the Stress Distribution in Different Endodontic Post-Retained Teeth with and without Ferrule Design—A Finite Element Analysis

Table 4

Comparison of stress* distribution between tapered and parallel posts of different materials with oblique load.

Materials	Region^†	Tapered post		Parallel post
		Ferrule	Nonferrule	Ferrule	Nonferrule
Ti	A	5.807	6.403	5.795	6.384
	B	7.258	8.537	7.243	8.512
	C	8.710	8.537	7.243	8.512
Ni-Cr	A	10.24	10.24	10.76	10.94
	B	11.38	11.38	11.95	12.16
	C	10.24	10.24	10.76	10.94
FRC	A	4.195	4.136	4.189	4.133
	B	2.797	3.102	2.793	3.100
	C	6.992	7.236	6.981	8.265

*Maximum Von Mises stress in MPa.
^†A—cervical one-third; B—middle one-third; C—apical one-third.