Table 5. Maximum tensile stresses in the cancellous and cortical bone around implants with different designs of threads under axial and oblique forces .

Surface angle	Axial load		Oblique load (45˚)
	Tensile stress (Gpa) cancellous bone	Tensile stress (Gpa) cortical bone	Tensile stress (Gpa) cancellous bone	Tensile stress (Gpa) cortical bone
V-shaped (20°)	2.26	32.48	1.45	62.48
V-shaped (35°)	2.40	11.23	3.12	13.44
Buttress (20°)	2.90	8.48	1.59	21.07
Buttress (35°)	3.59	12.10	2.25	27.63
Trapezoid (20°)	2.10	7.20	1.24	13.27
Trapezoid (35°)	1.64	6.58	8.62	24.79
Reverse (20°)	2.03	8.32	1.47	27.43
Reverse (35°)	1.85	7.20	1.56	15.87