TABLE 2.

When the bite force is loaded at different positions (two static bites of incisal and right molar clenching), the maximum stress point and deformation of the two-piece and three-piece superstructure (Nokar and Baghai Naini, 2010).

Clenching	Superstructure design	Maximum stress values (MPa)	Deformation (mm)
Incisal clenching (INC)	Two- piece superstructure	Condylar region, masseter attachment, buccal cortical bone of the most mesial implant (29.1)	Mandibular angle (0.6) Symphyseal region (0.45)
	Three- piece superstructure	Buccal cortical bone of the most mesial implant (20.1)	Mandibular angle (0.55) Symphyseal region (0.3)
Right molar clenching (RMOL)	Two- piece superstructure	Mandibular ramus, condyle, the lingual aspect of cortical bone around the most distal implant on the right side (104.7)	Mandibular angle and lower edge of Symphyseal region (0.3)
	Three-piece superstructure	Lingual aspect of cortical bone around the most distal implant on the right side (62.5)	Mandibular angle (0.5) Symphyseal region (0.6)