Functional Structure of Skull (From a mechanical point of view)
	In the force loading areas, pillar- like struts serve as mechanically efficient reinforcements to resist and dissipate pressure and traction, especially to the masticatory force.
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		1) Fronto-nasal pillar 2) Zygomatic arch pillar with vertical branch 3) Zygomatic arch pillar with horizontal branch 4) Basal arch in upper jaw 5) Basal arch in lower jaw 6) Occipital pillar 7) Pterygoid-palate pillars
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