From: The effect of enhanced structure in the posterior segment of clear aligners during anterior retraction: a three-dimensional finite element and experimental model analysis
Component
Element type
Elements
Nodes
Teeth and Attachments
C3D4
161,304
80,751
PDL
C3D6
85,082
43,342
Clear aligner
S3
72,914
73,926
Enhanced structure
S3R
2948
1794
Alveolar bone
159,890
79,947