Question 1

Which of the following is a maxillary occlusal projection but not a mandibular occlusal projection?

Accepted Answer

The lateral occlusal projection is a maxillary occlusal projection but not a mandibular occlusal projection.

Question 2

You need to take a maxillary occlusal image on your 4-year-old patient.Which of the following will you need to do?

Accepted Answer

Place the receptor with the tube side facing the maxilla.Position the PID with the central ray directed through the midline of the arch toward the center of the receptor.Place the top edge of the PID between the child's eyebrows on the bridge of the nose.Direct the PID at a +60-degree angle.

Question 3

The pediatric projection is recommended for use in children ____ years old or younger.

Accepted Answer

The pediatric projection is recommended for use in children 5 years old or younger.

Question 4

For the maxillary topographic occlusal projection,the central ray is directed at ____ degrees.

Accepted Answer

For the maxillary topographic occlusal projection,the central ray is directed at +65 degrees.

Question 5

Which occlusal projection is used to examine the palate and the anterior teeth of the maxilla?

Accepted Answer

The topographic occlusal projection is used to examine the palate and the anterior teeth of the maxilla.

Question 6

You need to take a mandibular occlusal image on your 28-year-old patient.Which of the following will you need to do?

Accepted Answer

Place the receptor with the tube side facing the mandible.Use a size 4 receptor.Center the PID over the patient's chin.Direct the PID at a -55-degree angle.

Question 7

The occlusal technique is used to examine

Accepted Answer

The occlusal technique is used to examine large areas of the upper or lower jaw.

Question 8

Your 17-year-old patient has tooth number 6 impacted.Which of the following would you take to evaluate the tooth?

Accepted Answer

Although placement of the receptor and PID would be correct,the number 2 size receptor would not show the entire canine.The size 4 receptor used for the adult maxillary occlusal image would cover a larger area of the maxilla and would show the entire canine.The mandibular cross-sectional would be used to evaluate foreign objects or salivary stones on the mandible.The maxillary lateral occlusal is used to evaluate the roots of the molar teeth.The maxillary occlusal would be used to evaluate an impacted canine on an adult.

Question 9

In adults,size ____ receptor is used in the occlusal examination.

Accepted Answer

In adults,size 4 receptor is used in the occlusal examination.

Question 10

Your patient indicates he was shot around tooth number 30 with a BB when he was younger.The BB is still there.He would like it removed.You have been asked to take a dental image of the area to locate the buccal-lingual and anterior-posterior position of the BB.Which of the following would you take?

Accepted Answer

This response is referring to the buccal object rule or SLOB.SLOB is used to locate the buccal or lingual orientation of the object.The right angle technique uses the cross-sectional image to locate the buccal-lingual and anterior-posterior orientation of the object.The mandibular molar periapical image can be used to locate the object but cannot be used to determine the buccal-lingual and anterior-posterior position of the BB.The mandibular occlusal image can be used to locate the object but cannot be used to determine the buccal-lingual and anterior-posterior position of the BB.

Question 11

When using the occlusal technique,the receptor is positioned with the _______ side facing the arch that is being exposed,and the receptor is placed in the mouth ______.

Accepted Answer

When using the occlusal technique,the receptor is positioned with the tube side facing the arch that is being exposed,and the receptor is placed in the mouth between the occlusal surfaces of the maxillary and mandibular teeth.

Question 12

How is the receptor stabilized in the patient's mouth when taking a cross-sectional image?

Accepted Answer

When the occlusal technique is used,a patient gently bites on the surface of the receptor to stabilize the receptor.

Question 13

The buccal object rule depends on a ________ image shift when trying to locate vertically aligned images.With the buccal object rule,an object to the buccal of the reference object will move in the ________ direction as the shift.

Accepted Answer

The buccal object rule depends on a horizontal image shift when trying to locate vertically aligned images.With the buccal object rule,an object to the buccal of the reference object will move in the opposite direction as the shift.

Question 14

According to the SLOB rule,when two dental images are compared,the object that lies to the lingual appears to have moved in the same direction as the position-indicating device (PID),and the object that lies to the buccal appears to have moved in the opposite direction as the PID.

Accepted Answer

According to the SLOB rule,when two dental images are compared,the object that lies to the lingual appears to have moved in the same direction as the PID,and the object that lies to the buccal appears to have moved in the opposite direction as the PID.

Question 15

Which occlusal projection is used to locate foreign bodies or salivary stones in the region of the floor of the mouth?

Accepted Answer

The cross-sectional occlusal projection is used to locate foreign bodies or salivary stones in the region of the floor of the mouth.

Question 16

When the right-angle technique is used,an occlusal receptor is exposed directing the central ray at ____ degrees to the receptor.

Accepted Answer

When the right-angle technique is used,an occlusal receptor is exposed directing the central ray at 90 degrees to the receptor.

Question 17

A dental image depicts which of the following dimensions of an object?
1)Length
2)Width
3)Depth

Accepted Answer

A dental image depicts length and width;it does not depict depth.

Question 18

The "S" in the mnemonic SLOB stands for

Accepted Answer

The "S" in the mnemonic SLOB stands for same.

Question 19

The dental image is a _______-dimensional picture of a _______-dimensional object.

Accepted Answer

The dental image is a two-dimensional picture of a three-dimensional object.

Question 20

Which size receptor would you use to take an occlusal image on your 3-year-old patient?

Accepted Answer

In children,a size 2 receptor is used in the occlusal examination.

Quiz 21: Occlusal and Localization Techniques