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Table 6 Mesial/distal movement value of the posterior tooth crown

From: Different biomechanical effects of clear aligners in bimaxillary space closure under two strong anchorages: finite element analysis

Group

5

6

7

Moderate anchorage group (maxilla)

− 1.402 M

− 1.096 M

− 0.944 M

Moderate anchorage group (mandible)

− 1.227 M

− 1.058 M

− 0.853 M

Indirect anchorage group (maxilla)

− 0.882 M

− 0.668 M

− 0.554 M

Indirect anchorage group (mandible)

− 0.485 M

− 0.299 M

− 0.210 M

Direct anchorage group (maxilla)

− 1.199 M

− 0.943 M

− 0.814 M

Direct anchorage group (mandible)

− 1.020 M

− 0.883 M

− 0.716 M

150 g elastic force group (maxilla)

0.254D

0.225D

0.202D

150 g elastic force group (mandible)

0.312D

0.280D

0.245D

  1.  + values indicate distal movement of the tooth crown (× 10−2 mm); − values indicate mesial movement of the tooth crown (× 10−2 mm); M, mesial movement; D, distal movement; 5, second premolar; 6, first molar; 7, second molar