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Progress in Orthodontics
Figure 2 | Progress in Orthodontics

Figure 2

From: Effects of crown-root angle on stress distribution in the maxillary central incisors’ PDL during application of intrusive and retraction forces: a three-dimensional finite element analysis

Figure 2

Stress distribution in PDL of upper central during application of retraction force, labial view. (a) Stress distribution in PDL of upper central with crown-root angle of 166.7° during application of retraction force, labial view. (b) Stress distribution in PDL of upper central with crown-root angle of 173.4° during application of retraction force, labial view.

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