Clinical Research Directory

Effects of Different 432 Hz Auditory Stimuli on Physiological Stress Responses and Patient Satisfaction in Adults With Dental Anxiety During Restorative Treatment

Sponsor: Dokuz Eylul University

Summary

In this four-arm randomized controlled clinical trial, 120 adults aged 18-50 years with baseline Modified Dental Anxiety Scale scores ≥13 were allocated equally to 432 Hz-based instrumental music, water sounds, human-vocal music, or a no-audio control during standardized restorative cavity preparation. Heart rate, systolic and diastolic blood pressure, peripheral oxygen saturation, and body temperature were recorded before and immediately after preparation; patient satisfaction was assessed after restoration. Physiological outcomes were compared using baseline-adjusted analysis of covariance, with Holm-adjusted pairwise comparisons. The null hypothesis was that there would be no significant differences among the four study groups in changes in physiological parameters or post-treatment patient satisfaction. The alternative hypothesis was that at least one auditory intervention condition would differ from the other study conditions in physiological responses and/or patient satisfaction.

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