When the third molar regions are not visible on a molar bite-wing image,the solution is to
A)decrease the vertical angulation of the tubehead.
B)increase the vertical angulation of the tubehead.
C)position the anterior edge of the receptor at the midline of the mandibular first premolar.
D)position the anterior edge of the receptor at the midline of the mandibular second premolar.

Question

Quizplus · Accepted Answer

Decreasing vertical angulation would cause elongation.Increasing the vertical angulation would cause foreshortening.Positioning the anterior edge of the receptor at the midline of the mandibular first premolar could result in not including the third molars in the image.When the third molar regions are not visible on a molar bite-wing image,the solution is to position the anterior edge of the receptor at the midline of the mandibular second premolar.

When the Third Molar Regions Are Not Visible on a Molar