It is not possible to treat protruding mouth by simply extracting teeth, which is also known as protruding upper and lower jaws. You should go to a professional dentist, preferably an orthodontist, for a pre-operative checkup to see what kind of causes the protruding mouth is, and to formulate a holistic treatment plan. If the protruding mouth is caused by bone, no matter what kind of tooth extraction and orthodontic methods are applied, it is necessary to cooperate with orthognathic surgery to move the upper and lower jaws to a different position, and cooperate with orthodontics in order to achieve a better result. If the protruding mouth is not bony, the face can be restored by extracting the teeth first and then orthodontics, but all of them need a good plan before surgery.