**1. Introduction**

In complete facial paralysis, the effected parts of the patients' face are frontalis muscle, muscles of facial expressions, and platysma muscle in the neck. The inability that troubles patients the most is the paralysis of the muscles on the effected side that pull the mouth corner vectorally outward from the center of the face during the act of smiling. Zygomaticus major muscle and minor muscle, which pull the upper lip upward and which are the main muscles that function during smiling, combined with rhisorius muscle, which pull the side of the lip outward, create the function of smiling. In a study it has been found that children smile 400 times and adults smile 20 times in a day and the importance of the action of smiling in people's lives in introducing themselves to their social environment has been shown [1]. In unilateral facial paralysis, an asymmetrical view is formed during smiling due to the lack of function in the muscles described above and in bilateral facial paralysis (Moebius syndrome, etc.), a motionless face is formed, which causes an apathic face appearance. Attempts on gaining the function of smiling constitute the main basis in facial reanimation operations, which are operations that aim to recreate the function of the effected muscles in cases of facial paralysis. Attempts on the muscles that close the eyelids are the second most frequent operations. Functional muscle transfer is done in attempts to recreate function of smiling. In this article, I am going to mention my experiences on single session gracilis muscle transfer in which masseter nerve is used as the recipient nerve.
