IRCT20180207038661N1 IRCT 2018-02-18 Qazvin University of Medical Sciences Comparison sore throats caused by the three main techniques of intracranial intubation Comparison the prevalence of sore throat due to endotracheal intubation with videolaryngoscope (Glidoscope) and conventional laryngoscope Macintosh and placement the LMA in elective surgeries 2018-01-21 anticipated 90 Complete https://irct.ir/trial/29515 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: In order to randomization and placement of patients in one of the study groups we used random packets. In this way, the researcher randomly opened one of the envelopes before the anesthetic induction and at that moment the technique was chosen for the patient, Blinding description: Packets used for randomization, were prepared by someone else who were not included in the study. N/A Patients undergoing elective surgeries (Non-emergent). Intervention 1: Group 1: Direct laryngoscopy with Macintosh blade. Intervention 2: Group 2: Indirect laryngoscopy by glidoscope. Intervention 3: Group 3: Laryngeal mask airway (LMA) insertion. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is It is not yet known if there will be a plan to make this available