Photographs are recommended for clinical extractions of large teeth, which are also known as imaging examinations, also known as dental radiographs or surface tomography examinations. It is necessary to check the specific number of roots, their shape and the direction of the skewed roots, which will help the doctor to find the proper position of force when removing the teeth, especially when removing the mandibular blocked wisdom teeth, it is also necessary to check the relationship between the mandibular roots and the nerve canal, so that the mandibular nerve canal can be protected.