Volumetric strain during jaw close–open movement. Volumetric strain as a function of time (ms). Positive strain: dilatation, negative strain: compression. Start closing movement: t = 50, jaw closed: t = 150, start opening movement: t = 200. Each panel represents a different region from posterior (first column) to anterior (last column) and from medial (first rows) to lateral (third rows). (A) Temporal cartilage layer; solid lines: surface layer, dotted lines: deep layer. (B) Articular disc; dotted lines: upper layer, solid lines: middle layer, dashed lines: lower layer. (C) Condylar cartilage layer; solid lines: surface layer, dotted lines: deep layer.