Cephalometric Evaluation of the Pre- and Posttreatment Changes after the Correction of Class II Division 1 Malocclusion with Twin Block Appliance in Mixed Dentition.

Facial convexity and nasolabial angle: Morris et al., although their findings did not reach statistical significance, observed a minor decrease in facial convexity along with changes in the nasolabial angle and labiomental fold.

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The ANB value decreased after treatment, and the reduction was statistically highly significant (0.000).

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