46 years old can straighten teeth. 1. Orthodontic mainly through some oral technology to improve the teeth crowding, teeth misalignment, teeth color abnormalities, etc., in line with the indications for orthodontic correction can be orthodontic, but periodontitis, active bleeding, hypertension, menstruation and other people do not recommend orthodontic correction, but is generally not affected by the age of 46 years old can be corrected teeth. 2. The way to straighten teeth has fixed orthodontic, lingual orthodontic, invisible orthodontic, etc., different orthodontic methods have their own advantages and disadvantages, such as fixed orthodontic efficiency is higher orthodontic speed, but not enough beauty, invisible orthodontic is more beautiful, but the price is more expensive. If you are 46 years old and have the need for orthodontic treatment, you can go to a professional medical institution and choose the appropriate orthodontic treatment under the assessment of the physician.