Hollow Abutment Screw Design for Easy Retrieval in Case of Screw Fracture in Dental Implant System

Table 3

Mechanical test parameters of two different types of abutment screws, , respectively.

Direction	Type	Value	Max load (N)	Displacement at max load (mm)
Vertical	Conventional	Ave.	1452.27	0.25
		SD	256.10	0.04
	Hollow	Ave.	1480.37	0.35
		SD	137.90	0.05

No significant difference between the two groups ().