Services provided or products produced are examples of ______________

A slanted or tilted occlusal plane results from which of the following?

A) Not using a cotton roll to stabilize the image receptor holder B) Not positioning the edge of the image receptor parallel to the occlusal plane C) Orienting the image receptor vertically when it should have been oriented horizontally D) Placing the image receptor in the mouth backward

Free treatment for ________ cases must be undertaken carefully and is given at the physician's discretion. 

Fill in the blank(s) with the appropriate word(s).