(1) Methods 65 teeth resinified with radiopaque resinifying agent in vitro were evaluated on X-ray films and through stereomicroscope.

(2) Barium sulfate is radiopaque.

(3) Objective To study the possibility of radiopaque resinifying agent in resinification of the tooth.

(4) Objective To study the possibility of using radiopaque resinifying agent in resinification of the tooth.

(5) X - ray photography of the pelvis the kidney and associated structures after injection with a radiopaque dye.

(6) X - ray examination of the bile ducts following administration of a radiopaque contrast medium.

(7) Examination of the interior of a joint using x - rays following the injection of radiopaque substance.