Progress in Orthodontics

Table 3 Approximate number of nodes

From: Maxillary anterior en masse retraction using different antero-posterior position of mini screw: a 3D finite element study

Structure	Node number
Bone	151,000
PDL	6500
Teeth	200,000
Hook	500 to 1600
Bracket	12,000
Wire	1100
Total	371,100

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