IRCT20080820001056N4 IRCT 2020-03-12 Tehran University of Medical Sciences comparison between Nylon versus PDS in Tongue-in-groove technique in rhinoplasty Comparison between Nylon and PDS suture for development and maintenance of rotation and projection in Tongue-in-groove technique rhinoplasty on rhinoplasty patients 2017-10-02 anticipated 64 Complete https://irct.ir/trial/42198 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: with block randomization of size 4 ,the patients were placed in 2 groups of A and B.In one group Nylon suture and in other group PDS suture was uesd.The blocks were developed by epidemiologist with one code for each patient was considered to assign in A or B group, Blinding description: The epidemiologist was the only person who knows randomization code. The surgeon will not know about the suture material types until the end of surgery. The surgeon assistant will let him know suture material types at the end of surgery during TIG. The surgeon assistant will be blinded about suture material before surgery and patients won't know suture materials were used during their surgeries. 3 Rhinoplasty. Intervention 1: Intervention group 1: using Nylon 5-0 Suture(ethicon company) in TIG Technique. only one suture was used.Nasal tip projection measurements by Goode's ratio method and Nasal tip rotation measurements by nasolabial angel is done before intervention visit and 1,6,12 months after intervention visit by performing standard photography and photo analysis with photoshop .also checking the Patient's Satisfaction of Rhinoplasty by Visual Analogue Scale in visits of 1,6,12 months after intervention and checking nasal function before intervention visit and 12 months after intervention visit with SCHNOS. Intervention 2: Intervention group: 2 ,using PDS 5-0 Suture( ethicon company). in TIG Technique.only one suture was used.Nasal tip projection measurements by Goode's ratio method and Nasal tip rotation measurements by nasolabial angel is done before intervention visit and 1,6,12 months after intervention visit by performing standard photography and photo analysis with photoshop .also checking the Patient's Satisfaction of Rhinoplasty by Visual Analogue Scale in visits of 1,6,12 months after intervention and checking nasal function before intervention visit and 12 months after intervention visit with SCHNOS. Yes - There is a plan to make this available What will be shared: we will publish it in article When: we will publish it in article 2020 To whom: nobody can have anything more than article Conditions: we will publish it article but nobody can have access to other data Where to obtain: we will publish it in article How to obtain: Contact with researchers Comments: