Orthodontics is generally possible at the age of 45. 1. Orthodontics is a common oral treatment technique, mainly used to improve the misalignment of teeth, tooth shape and color abnormalities, etc. Orthodontic methods include prophylactic orthodontics, interceptive orthodontics, orthognathic surgical orthodontics and so on. 2. However, periodontitis, active bleeding, high blood pressure, heart disease, menstruation and other people are not recommended for orthodontic treatment, you need to ask a professional doctor first, but 45 years old is not a contraindication to orthodontic treatment, and you can have orthodontic treatment when you have orthodontic needs. When you want orthodontic treatment at the age of 45, you can go to a professional hospital, orthodontic treatment under the assessment of the physician, before orthodontic treatment, you can fully understand the contraindications of orthodontic treatment, risks, post-operative care, and so on.