Wisdom teeth can be extracted when they are just a little bit long. 1. Wisdom teeth are the last teeth to grow, with the evolution of human beings, the jawbone becomes smaller, resulting in insufficient position of the wisdom teeth, obstruction, showing anterior or horizontal obstruction, the presence of blind pockets around the wisdom teeth, easy to wisdom teeth pericoronitis, localized swelling, pain, recurrent episodes. Therefore, wisdom teeth are usually extracted as early as possible. 2. Due to the anterior tilting or horizontal position of the wisdom teeth obstruction, it will show a little bit of wisdom teeth, the wisdom teeth of the obstruction can not be completely grown out, only orthodontic wisdom teeth, it is possible to completely grow out, so the wisdom teeth show a little bit of the need to take a picture to observe the position of the teeth, to design the extraction program or observation. Wisdom teeth grow a little bit need to consult a doctor for examination, under the guidance of the doctor for examination, to develop a comprehensive tooth extraction program.