Question 1

Vitamin C deficiency (scurvy) has all of the following symptoms EXCEPT:

Accepted Answer

Vitamin C (ascorbic acid) deficiency (scurvy) includes all the following symptoms: swollen gums, anemia, poor wound healing, etc. Gangrene is not a symptom of scurvy.

Question 2

Where are the nerve cell bodies for the pain fibers in the face area located?

Accepted Answer

Pain fibers in the face area have their neuronal cell bodies located in the trigeminal (gasserian) ganglion.

Question 3

Most blood vessels dilate under hypoxic conditions. In which arterial region does hypoxia cause vasoconstriction?

Accepted Answer

Pulmonary arterioles are unique for constricting under hypoxic conditions.

Question 4

What is the most suitable common treatment for tooth avulsion?

Accepted Answer

Reimplantation and splinting is the most suitable common treatment for tooth avulsion.

Question 5

What is the best recommended treatment for reversible pulpitis?

Accepted Answer

Reversible pulpitis can usually be managed by timely filling and using anti-inflammatory drugs.

Question 6

In what stage of caries does the decay in dentin pass the halfway mark from the enamel (dentino-enamel junction) to the pulp.

Accepted Answer

In stage 4 (grade 4) of caries, the decay in dentin has already passed the halfway mark from the enamel to the pulp. In chronic cases, the decay might spread until it reaches the pulp.

Question 7

The inability to understand verbal speech or receive information is clinically referred to as what condition?

Accepted Answer

Receptive aphasia can be clinically defined as the inability to understand verbal speech or receive information.

Question 8

What are the main organisms responsible for tooth decay involved in dental caries?

Accepted Answer

The main organisms responsible for tooth decay in caries are Streptococcus mutans and Lactobacillus.

Question 9

Which of the following teeth presents a pentagonal "home plate" occlusal outline that is distinctive for this tooth?

Accepted Answer

The mandibular first permanent molar presents a pentagonal "home plate"? occlusal outline that is present only in this tooth. The function of this molar is similar to that of all molars, with grinding being the principal action during mastication, commonly known as chewing. There are usually five well-developed cusps.

Question 10

Which of the following teeth are NOT included among the succedaneous (successional) teeth?

Accepted Answer

Permanent molars are accessional teeth, i.e., those having no deciduous predecessors. In contrast to the molars, permanent incisors, canines, and premolars are all succedaneous (successional) teeth.

Question 11

Which of the following statements about human canines is true?

Accepted Answer

The canine is slightly darker and more yellow in color than the incisor teeth. It is also approximately 1 mm narrower than the central incisor.

Question 12

Which of the following is directly involved with the descending modulation of pain transmission?

Accepted Answer

The nucleus raphe magnus receives input from the periaqueductal gray and leads to descending serotonergic fibers of the raphe spinal projection.

Question 13

What is one of the major mechanical reasons for overjet?

Accepted Answer

The major mechanical reason for overjet is that the upper arch is larger and overlies the lower.

Question 14

Which of the following periods of dentofacial development is sometimes characterized by the presence of various developmental errors, skeletal alignment, and soft tissue problems?

Accepted Answer

In some individuals, the mixed dentition period is characterized by the presence of various developmental errors, skeletal alignment, and soft tissue problems.

Question 15

What shouldn't you do when treating a tooth that has been knocked out?

Accepted Answer

You should not handle the tooth by the root surface after it has been knocked out.

Question 16

Which of the following periods of dentofacial development is characterized by a rapid growth of the jaw in three planes of space?

Accepted Answer

The predentition period is characterized by a rapid development of both jaws downward, forward, and medially.

Question 17

Regarding the differences between deciduous and permanent teeth, the roots of deciduous molars are:

Accepted Answer

The roots of deciduous molars are longer and more slender than the roots of permanent molars. They also have a significant amount of flare.

Question 18

One of the basic differences between deciduous and permanent teeth is that the enamel of deciduous teeth is:

Accepted Answer

Enamel of deciduous teeth is thinner and whiter in appearance. The thinness of the enamel in deciduous teeth and its lower level of mineralization could be responsible for its whiter appearance

Question 19

The transition from the deciduous to the permanent dentition begins with the eruption of which of the following:

Accepted Answer

The transition from primary to permanent dentition begins about 6 years of age with the eruption of the first four permanent molars. The timing of when the primary teeth are shed affects the emergence of permanent teeth, i.e., early shedding of primary teeth advances the emergence of permanent teeth.

Question 20

When do the upper deciduous canines usually erupt?

Accepted Answer

Both upper and lower deciduous canines usually erupt around 16-20 months.

Quiz 1: Dental Board