Facial Bone Contouring of Jawline. Is This a High-risk Procedure? (photo)

Im a 20 year old female of Asian descent. I have a square and assymetrical jaw that is mostly caused by my large masseter muscles and possibly my bone structure. I considered botox but I really dont want to inject my face with a toxin every 6-12 months. I looked into jaw shaving but the procedure sounds really terrifying. Is this a high-risk procedure?

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