Correction of the curve of spee using clear aligner therapy: A finite element analysis of three lower anterior intrusion protocols
Fig 5
Minimum principal stress (MPa) under S1, S2, and S3 conditions.
(A, B) Graphical comparison of minimum principal stress values: (A) in the PDL of the lower teeth across S1, S2, and S3; (B) in the lower teeth across S1, S2, and S3 conditions. (C-H) Color-mapped visual representations of minimum principal stress distribution: (C, D) under S1 in the PDL and teeth, respectively; (E, F) under S2 in the PDL and teeth, respectively; (G, H) under S3 in the PDL and teeth, respectively. All images (C-H) include buccal, frontal, and lingual views.