BAT Task

Question 1

State the theory rule for the parallel technique

Answer 1

The receptor and the long axis of the tooth are parallel to one another and the central ray is directed perpendicularly to the long access of the tooth and the receptor

Question 2

State how adequate horizontal angulation is achieved with the parallel technique

Answer 2

Receptor is placed horizontally parallel to the arch that is being exposed

Question 3

State how adequate vertical angulation is achieved with the parallel technique

Answer 3

Receptor is placed vertically parallel to the long axis of the tooth

Question 4

How are cone cuts prevented on bitewing images: front and back

Answer 4

Place the cone 1/4 inch anterior to the receptor

Question 5

How are cone cuts prevented on bite wing images: top and bottom

Answer 5

Center of cone is placed parallel to the occlusal plane

Question 6

State the theory rule for the bisection of the angle technique

Answer 6

Central ray is directed perpendicular to the imaginary bisecting line that bisects the long axis of the tooth and the receptor

Question 7

State how adequate horizontal angulation is achieved with a bisecting technique

Answer 7

Center of the cone is placed horizontally parallel to the angle of the arch of the teeth being exposed

Question 8

State how adequate vertical angulation is achieved with the bisecting technique

Answer 8

Center of the cone is vertically parallel to the bisector

Question 9

State how cone cuts are prevented on periapical images: front and back

Answer 9

Cone is placed 1/4 inch anterior to the receptor

Question 10

How are cone cuts prevented on periapical images: top and bottom

Answer 10

Cone is placed 1/4” above or below the occlusal plane

Question 11

State the technique for maxillary occlusal image concerning patient positioning

Answer 11

Maxillary arch must be parallel to the floor

Question 12

State the technique for maxillary occlusal image concerning cone placement

Answer 12

Cone centered above the maxilla against the bridge of the nose. Bottom of cone 1/8 to 1/4 inch below the receptor

Question 13

State the technique for maxillary occlusal image concerning vertical angulation

Answer 13

Cone must be placed parallel to the bisecting line to bisect the angle. Positive angulation is used

Question 14

State the technique for mandibular occlusal images concerning patient positioning

Answer 14

Patient is angled backward so the mandibular arch is at a 45° angle to the floor

Question 15

State the technique for mandibular occlusal images concerning cone placement

Answer 15

Cone is placed at the chin with the top edge of the cone 1/8 to 1/4 inch above the edge of the receptor

Question 16

State the technique for mandibular occlusal images concerning vertical angulation

Answer 16

Opening of the cone must be parallel to the bisecting line to bisect the angle. Negative vertical angulation will be used