It is normal for a 16 year old to need braces but to have 4 teeth extracted because extractions are one of the steps in orthodontic correction, and it is not dangerous to have them done in a regular organization. If you need braces, some of them have to be extracted first. Orthodontics is the process of aligning misaligned teeth in the mouth, and the reason why teeth are extracted is because the dentition itself is crowded or the teeth are more convex, and there is a lack of space to align the teeth. The reason why teeth are extracted is because the teeth are crowded or convex, and there is a lack of space to align the teeth. As long as the extraction is done in a proper medical facility, it is usually not dangerous. Before the extraction of teeth to do a good examination, after the extraction of good oral care. 24 hours, prohibit rinsing, do not eat too hot or hard food, so as not to stimulate the trauma caused by bleeding, after the extraction of minor pain is normal, if the pain persists should be timely medical care. Children 16 years old braces, specifically in the regular hospital, under the guidance of the doctor, so as not to cause damage to the teeth.