Researchers will compare oral flurbiprofen (%0.25) spray and ice cream to a placebo (a look-alike substance that contains no drug) to see if oral flurbiprofen (%0.25) spray and ice cream works to effect post-thyroidectomy throat pain and voice quality.
Participants will:
* Receive 1 puff of oral flurbiprofen (0.25%) spray or 105 ml of ice cream or 1 puff of oral spray prepared with drinking water (placebo) at 5 hours postoperatively according to randomization result
* Undergo voice analysis using Praat voice analysis (University of Amsterdam) at 6 hours postoperatively
* Undergo a visual analog scale for analgesia status at 6 hours postoperatively