34 years old is generally suitable for wearing steel braces. 1. Each person’s physical condition is different, economic conditions are different, so the type of braces chosen is not the same, there is no strict limit, you can wear steel braces, you can also wear porcelain braces. 2. If there is a malformation of the teeth, in order to let the teeth back to normal, you can generally wear braces, wear braces must do a good job of dental care health care, it is best not to eat spicy and stimulating food, do not chew too hard food, so as not to lead to loosening of the teeth. If wearing braces can not achieve better results, it may be necessary to carry out orthodontic orthognathic joint treatment, so as to be able to completely straighten the teeth.