a subject the height from the bottom of the connection frame 145 to the top of the first body 143 or the second body 141 may be larger than the height from the bottom of the connection frame 145 to the top of the middle portion in the biting section 146 the width corresponding to the width direction of a set of teeth of a subject of is larger than the thickness so the connection frame 145 can be kept in a stable position when the biting section is bit between teeth the first body 143 at the front end of the connection frame 145 and the second body 141 at the rear end of the connection frame 145 can move relative to the connection frame 145 while being aligned with each other in the longitudinal direction of the connection frame 145 as shown in fig3 the first body 143 and the second body 141 can simultaneously slide with respect to the connection frame 145 this configuration allows for easy radiography of not only the front teeth but the back teeth of a subject using the radiographing body 140 that is when the second body 141 positioned outside the mouth of a subject is.