![]() Our study’s exclusion criteria were as follows: Patients with hearing disorders Patients with psychiatric disorders Patients who were taking antidepressants drug Pregnant or lactating women. Our study’s inclusion criteria were as follows: Patients between the ages of 18-45 years Patients who had an impacted mandibular third molar No medication use. The purpose of this study was to investigate the effectiveness of 432 Hz tuned music and binaural beats for reducing preoperative dental anxiety in impacted third molar surgery. In addition, there is no study comparing the effects of both binaural beats and 432 Hz music frequency on preoperative dental anxiety. Many researches about binaural beats have been done ( 8), but to our knowledge only one study regarding with binaural beats in dental anxiety was reported ( 9). It was reported that music intervention normalized arrhythmia and induced relaxation during local anesthesia operation ( 7). ![]() Steelman found that music therapy reduced patients’ blood pressure under local anesthesia ( 6). These features make the music ‘neutral’ free from feelings that other options may trigger physiological responses in patients ( 3). Music with slow and melodies provides emotional and physical relaxation in listeners. Many musicians advocated that 432 Hz is the closest frequency to the natural human frequency. This method has been reported to alleviate moderate anxiety ( 5).Īnother method of reducing anxiety is music therapy. ![]() To achieve the desired results, both ears should participate the process ( 4). The resulting perception is of a single tone with a frequency that is midway between the two carrier tones and that waxes and wanes in amplitudes at a rate equal to the difference between them. One of them is ‘binaural beats’ technology which is based on the application of two sounds with steady intensities but different frequencies are presented separately, one to each ear. Many methods have been tried including the use of medicines to reduce the anxiety. The patients being stressed during the operation reduces the patient-physician cooperation, makes the treatment difficult and may increase the stress of the physician ( 2). Dental anxiety is seen more common in surgical procedures ( 1, 2). Although the term ‘dental anxiety’ cannot be defined exactly in the literature, it contains many different emotions ranging from mild anxiety to extreme anxiety ( 3). Anxious and fearful patients are frequently encountered during the dental procedures ( 1, 2).
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