IRCT20180312039060N3 IRCT 2019-05-13 Islamic Azad University Effect of laser therapy on swelling, wound healing and pain Effect of 660nm low level laser therapy on post-operative facial swelling, wound healing and pain 2019-04-07 anticipated 12 Complete https://irct.ir/trial/39240 interventional Randomization: Randomized, Blinding: Triple blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: Samples numbered 1-12. randomization done with True random generator software in Random.Org. In the software, at least 1 and maximum 12 were assumed. Then the software was used until six distinct and non-repetitive numbers were obtained. Patients with acquired numbers were placed in the first group and the rest were in the second group, Blinding description: Patients have no idea what side of the face they are pushing for the laser and which side is precipitated when the laser is pushed out. The statistician was not aware of which side of the placebo and which side of the laser was exposed Measurement was carried out by an experienced person and aware of the measurement process that was unaware of the protocol and goals of the study. 3 Pain, swelling, wound healing. Intervention 1: Intervention group: 12 patients are randomly dividied into 2 groups of six. In the first group the LASER therapy will be conducted on the right side of the face while on the left side it's pretended with the LASER being off on the wounded (ulcer) area. In the second group، the left side of the face will be under LASER therapy while the laser is off on the right side and is pretended to be used. Intervention 2: Control group: other side of the mouth. Yes - There is a plan to make this available What will be shared: all data When: after paper published To whom: all person Conditions: no situation Where to obtain: alireza sadigh 09143083724 How to obtain: 1 day Comments: