Effect of ultrasound therapy for orthodontic pain control: A pilot randomized clinical trial.

In contrast, the sham group exhibited minimal change (5.6±1.1 to 5.2±1.0; p=0.18), with only 7.1% reduction ( Table 2 ). The between-group difference in post-treatment VAS scores was highly significant (mean difference: 3.1; 95% CI: 1.8-4.4; p<0.001).

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