Question 1

A patient complains of moderate pain in a first molar. There is no evidence of premature contact or mobility. A radiograph does not reveal periodontal changes. What should be the treatment plan for this patient?

A) Remove overhanging margins.
B) Remove plaque and calculus.
C) Remove floss and teach correct flossing.
D) Remove decay and place a restoration.

Accepted Answer

Moderate pain in a tooth not caused by premature contact (large, high filling) or periodontal changes is most likely due to dental decay. A retained piece of dental floss, as well as accumulated subgingival plaque and calculus, more typically elicits a soft tissue response.

Question 2

Tooth migration can begin with 24 hours of an extraction. Tooth migration, otherwise known as mesial drift, of teeth is a natural phenomenon.&#10;A) Both statements are true.&#10;B) The first statement is true, the second is false.&#10;C) The first statement is false, the second is true.&#10;D) Both statements are false.

Accepted Answer

Tooth migration, the tendency of a tooth to over-erupt in an attempt to "find" its opposing tooth, can begin in as little as 24 hours after extraction of an opposing tooth. The second statement incorrectly equates tooth migration with mesial drift. These are two separate phenomena. Mesial drift is defined as the natural phenomenon of permanent molars to continue to move mesially after eruption.

Question 3

If a mandibular first molar is lost, the mandibular second molar will&#10;A) Develop decay&#10;B) Supra-erupt&#10;C) Drift mesially&#10;D) Drift distally&#10;E) Do none of the above

Accepted Answer

Collapse of dental tissues is initiated by the loss of a single tooth, a mandibular first molar. Numerous events occur, eventually resulting in mesial drift of the mandibular second molar. This movement is accompanied by occlusal trauma and tipping in a mesial direction of the same tooth. Open contacts between the second and third molar result as well as between the second premolar and the second molar. Consider the periodontal, occlusal, and carious potential of these events.

Question 4

During restorative procedures, a matrix band properly wedged interproximally with a wooden wedge enables excess filling material to enter the gingival crevice. The wedge also forces the teeth apart so that an open contact can be established.

A) Both statements are true.
B) The first statement is true, the second is false.
C) The first statement is false, the second is true.
D) Both statements are false.

Accepted Answer

The role of a properly placed matrix band with a wooden wedge is to prevent excess filling material from entering the gingival crevice. The matrix band retains the material being packed against the tooth, and the wedge forces the inside of the matrix band against the tooth so that no excess filling material can overflow into the gingiva. Open contacts are not desirable and are often a prelude to periodontal disease. The wedge forces the teeth apart so that a tight interproximal contact can be made.

Question 5

A patient complains of moderate pain in a first molar. There is no evidence of premature contact or mobility. A radiograph does not reveal periodontal changes. What should be the treatment plan for this patient?

A) Remove overhanging margins.
B) Remove plaque and calculus.
C) Remove floss and teach correct flossing.
D) Remove decay and place a restoration.

Accepted Answer

The treatment plan of a patient presenting with moderate pain diagnosed as originating from dental decay should prioritize removal of decay and placement of a restoration. The remaining selections are all viable options as they are important contributions to oral health. However, the primary goal remains to treat the patient's chief complaint.

Question 6

Which is the most common initial response to gingival recession?&#10;A) Gingival inflammation&#10;B) Plaque formation&#10;C) Tooth sensitivity&#10;D) Stain formation

Accepted Answer

Root surface exposed by gingival recession often leaves areas of exposed dentin, which elicits pain when exposed to air, sweets, hot, or cold. In this sense dentin can be nature's warning sign of gum disease. Each of the remaining selections very commonly occurs in areas of longer-standing recession. Plaque retention and stain formation occur far more frequently on root surface than on the smooth enamel of anatomic crowns. Gingival inflammation is directly related to retained plaque and debris.

Question 7

Pain can occur around a nonvital tooth because the nerve cells in the pulp frequently regenerate.&#10;A) Both the statement and the reason are correct and related.&#10;B) Both the statement and the reason are correct but are NOT related.&#10;C) The statement is correct, but the reason is NOT correct.&#10;D) The statement is NOT correct, but the reason is correct.&#10;E) NEITHER the statement NOR the reason is correct.

Accepted Answer

In a nonvital tooth the nerves do not regenerate, however pain may persist because the nerve tissues in the periodontal ligament and surrounding bone tissue are still alive. This applies to a tooth whose pulp has been severely damaged through disease as well as an endodontically treated tooth whose pulp cavity has been completely debrided of all traces of nerve tissue and filled with root canal filling material.

Question 8

An ideal situation is to have all teeth occlude equally on closure of the jaw because this pattern allows dissipation of occlusal forces over all of the teeth.&#10;A) Both the statement and the reason are correct and related.&#10;B) Both the statement and the reason are correct but are NOT related.&#10;C) The statement is correct, but the reason is NOT correct.&#10;D) The statement is NOT correct, but the reason is correct.&#10;E) NEITHER the statement NOR the reason is correct.

Accepted Answer

If dissipation of occlusal forces is not achieved during restorative procedures a tooth will prematurely contact another. This results in only two teeth bearing the initial brunt of occlusal forces. Trauma from excess force, known as occlusal trauma, results in periodontal disease, cracking of the enamel, and possible tooth fracture.

Question 9

To some degree, prevention of periodontal disease is attributable to the smoothness of cementum because bacteria that initiate gingival and periodontal diseases are prevented from accumulating on smooth surfaces.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Accepted Answer

To a degree, periodontal disease is prevented by the smoothness of enamel. Retention of food debris and plaque biofilm is diminished by the smooth nature of enamel. However, the root surface covering known as cementum does NOT have this attribute. Once the destructive influences of plaque and bacteria access the cementum, the likelihood of disease increases dramatically.

Question 10

Occlusal trauma results in mobility of the affected teeth as well as migration and tipping of affected teeth. Although migrated teeth cause restorative dental problems, damage to the periodontium rarely occurs.

A) Both statements are true.
B) The first statement is true, the second is false.
C) The first statement is false, the second is true.
D) Both statements are false.

Accepted Answer

Occlusal trauma causes tooth mobility and predisposes affected teeth to migration and tipping. A result of such occlusal disharmony is loss the of contact area between adjacent teeth. An open contact, virtually impossible for patients to adequately clean, can cause a periodontal pocket with loss of fibrous attachment and formation of infraosseous periodontal pockets.

Question 11

After placing a restoration, the dentist and auxiliary should check a patient's bite by having the patient chew a thin piece of sugarless gum because checking the bite ensures that no part of the restoration is hitting prematurely.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Accepted Answer

The answer of After placing a restoration, the dentist and...

Question 12

When restoring the anatomy of a decayed tooth each of the following should be recreated EXCEPT one. Which is the EXCEPTION?&#10;A) Buccal and lingual contour&#10;B) Deep occlusal pits and grooves&#10;C) Interproximal contact area&#10;D) Occlusal contact point

Accepted Answer

The answer of When restoring the anatomy of a decayed...

Question 13

When a tooth has no antagonist in the opposing arch, the tooth can&#10;A) Over-erupt&#10;B) Develop periodontal disease&#10;C) Develop dental caries&#10;D) Develop occlusal trauma&#10;E) Do all of the above

Accepted Answer

The answer of When a tooth has no antagonist in...

Question 14

Which of the following contribute to dental caries and periodontal disease (select all that apply)?&#10;A) Rough pits and grooves&#10;B) The consistent presence of bacterial plaque on teeth&#10;C) Inferior restorative dentistry&#10;D) Intact enamel surfaces&#10;E) Neglecting to replace missing teeth

Accepted Answer

The answer of Which of the following contribute to dental...

Question 15

Sealants are most effective in preventing decay in&#10;A) Interproximal areas&#10;B) Uneven enamel&#10;C) Buccal and lingual grooves&#10;D) Occlusal pits

Accepted Answer

The answer of Sealants are most effective in preventing decay...

Question 16

Which of the following accurately describe preventive clinical considerations of existing dental conditions (select all that apply)?&#10;A) Polishing restorations&#10;B) Root planing&#10;C) Using amalgam to fill a tooth&#10;D) Removing plaque and calculus

Accepted Answer

The answer of Which of the following accurately describe preventive...

Question 17

Pulpal tissue cannot expand because the pulp is encased in hard dentinal tissue that makes expansion virtually impossible.&#10;A) Both the statement and the reason are correct and related.&#10;B) Both the statement and the reason are correct but are NOT related.&#10;C) The statement is correct, but the reason is NOT correct.&#10;D) The statement is NOT correct, but the reason is correct.&#10;E) NEITHER the statement NOR the reason is correct.

Accepted Answer

The answer of Pulpal tissue cannot expand because the pulp...

Question 18

During pulpal inflammation, arterial walls collapse and the venous walls remain intact because arterial walls are thicker than the walls of veins.&#10;A) Both the statement and the reason are correct and related.&#10;B) Both the statement and the reason are correct but are NOT related.&#10;C) The statement is correct, but the reason is NOT correct.&#10;D) The statement is NOT correct, but the reason is correct.&#10;E) NEITHER the statement NOR the reason is correct.

Accepted Answer

The answer of During pulpal inflammation, arterial walls collapse and...

Question 19

Dentinal surfaces are rarely exposed during root planing because the envelope of cementum covering the root is quite thick.&#10;A) Both the statement and the reason are correct and related.&#10;B) Both the statement and the reason are correct but are NOT related.&#10;C) The statement is correct, but the reason is NOT correct.&#10;D) The statement is NOT correct, but the reason is correct.&#10;E) NEITHER the statement NOR the reason is correct.

Accepted Answer

The answer of Dentinal surfaces are rarely exposed during root...

Question 20

Each of the following is a common result of occlusal trauma EXCEPT for one. Which one is the EXCEPTION?&#10;A) Muscle pain&#10;B) Tighter contact areas&#10;C) Nerve trauma&#10;D) Periodontal pocketing

Accepted Answer

The answer of Each of the following is a common...

Question 21

Adjusting occlusion to discourage premature contact is considered a preventive therapeutic procedure.

Accepted Answer

The answer of Adjusting occlusion to discourage premature contact is...

Question 22

In protrusive occlusion, only the anterior teeth occlude.

Accepted Answer

The answer of In protrusive occlusion, only the anterior teeth...

Question 23

The walls of the pulp chamber are formed by dentin and enamel.

Accepted Answer

The answer of The walls of the pulp chamber are...

Question 24

A temporary crown can prevent mesial drift.

Accepted Answer

The answer of A temporary crown can prevent mesial drift....

Question 25

Match between columns&#10;                        Premises: Migration&#10;Migration&#10;Migration&#10;Migration&#10;Migration&#10;Pulpal walls&#10;Pulpal walls&#10;Pulpal walls&#10;Pulpal walls&#10;Pulpal walls&#10;Mesial drift&#10;Mesial drift&#10;Mesial drift&#10;Mesial drift&#10;Mesial drift&#10;Apical foramen&#10;Apical foramen&#10;Apical foramen&#10;Apical foramen&#10;Apical foramen&#10;Occlusal trauma&#10;Occlusal trauma&#10;Occlusal trauma&#10;Occlusal trauma&#10;Occlusal trauma

Accepted Answer

The Answer of Tooth over-erupts in an attempt to "find" is...

Deck 9: Clinical Considerations