Dental A casting may fail to seat on the prepared tooth due to all of the following factors except _____. A Temporary cement still on the prepared tooth after the temporary restoration has been removed. B Proximal contact(s) of casting too heavy/tight. C Undercuts present in prepared tooth. D The occlusal of the prepared tooth was underreduced. 💡 Explanation A casting may fail to seat on the prepared tooth due to all of the following factors except _____. ✓ Correct Answer: D. The occlusal of the prepared tooth was underreduced.