Three-dimensional finite-element analysis of a single implant-supported zirconia framework and its effect on stress distribution in D4 (maxilla) and D2 (mandible) bone quality

Figures & data

Figure 1. Maxilla and mandible, implant-supported crown, implant body and abutment model.

Table 1. Poisson ratio and Young's modulus values of materials used in the study.

Material	Poisson ratio	Young's modulus (GPa)
Cortical bone (D2)	0,3	13.7
Spongious bone (D4)	0,3	1.10
Titanium (implant body + abutment)	0,34	114
Zirconia	0,33	210
Porcelain	0,35	82.8
Cement	0,35	12

Figure 2. Stress analysis of the mandibular implant-supported crown.

Figure 3. Stress analysis of the maxillary implant-supported crown.

Table 2. Maximum and minimum stress values after force application (MPa).

		Vertical loading		Oblique loading
		(max.)	(min.)	(max.)	(min.)
Mandibular implant-supported crown model	Implant	58.64	1.45	223.51	0.59
	Zirconia framework	61.58	3.09	212.73	1.01
Maxillary implant-supported crown model	Implant	81.48	3.74	263.51	1.01
	Zirconia framework	51.28	3.98	301.17	3.85