To put it bluntly, if your two front teeth are loose due to periodontal disease or periapical disease, just take a small dental tablet, which is very clear and easy to use. At most, it is enough to take a full-face arc section, and you can also see the maxillary sinus. The large skull slice you mentioned is called frontal skull slice, which is usually used for tumor, trauma, mandibular joint or orthodontics. In other words, if you look at the overall arrangement of the mandible and teeth, you don't need to shoot this kind of film at all.