Question 1

A 70-year-old will spend how much of his/her life chewing with their deciduous teeth?

Accepted Answer

An individual who is 70 years old will spend 91% of his/her life chewing with permanent teeth, but the same person will spend only 6% of his/her life chewing with the primary/deciduous teeth.

Question 2

Which of the following is an irregular, rounded depression or concavity found on the surface of a tooth?

Accepted Answer

A fossa is an irregular, rounded depression or concavity found on the surface of a tooth. A lingual fossa is found on the lingual surface of incisors. A central fossa is found on the occlusal surface of a molar.

Question 3

What is the space in the tooth that contains the "nerve"? of the tooth called?

Accepted Answer

Pulp cavity. This is the space in the tooth that contains the pulp or "nerve"? of the tooth. It is composed of the root canal and pulp chamber.

Question 4

Anatomically, the term "clinical root"? can be defined as which of the following:

Accepted Answer

The anatomical root is that portion of the tooth that is covered with cementum, a thin layer of calcified (tough calcium deposits) tissue covering the dentine of the root.

Question 5

Which of the following is the only movable bone of the skull (head)?

Accepted Answer

The mandible or lower jaw is the only movable bone of the skull (head). All other bones are practically immobile.

Question 6

What type of human teeth work with incisors to support the lips cut or shear food and also act as guideposts in occlusion?

Accepted Answer

In humans, canines work with incisors to support the lips cur or shear food and also act as guideposts in occlusion. Human canines are the longest and most stable teeth in the dental arch.

Question 7

Which one of the following teeth is present in each quadrant and primarily used in tearing or ripping food?

Accepted Answer

Canines are primarily used for tearing and ripping food. The word canine relates to the features of the family Canidae which includes dogs, foxes and wolves. All mammals have a single canine in each quadrant.

Question 8

Which of the following ridges are the rounded borders of enamel that form the margins of the surfaces of premolars and molars, mesially and distally?

Accepted Answer

Marginal ridges are those rounded borders of enamel that form the margins of the surfaces of premolars and molars, mesially and distally. Marginal ridges give the teeth structural resistance to fracturing, as well as helping reduce food during chewing.

Question 9

Which of the following is a point or peak on the occlusal surface of molar and premolar teeth and on the incisal edges of canines?

Accepted Answer

The cusp is a point or peak on the occlusal surface of molar and premolar teeth and on the incisal edges of canines. It is also defined as an elevation on the crown of a tooth, making up a divisional part of the occlusal surface.

Question 10

What part of a tooth is present in the alveolar bone?

Accepted Answer

The root is part of a tooth that is present in the alveolar bone. Alveolar bone surrounds the roots of teeth to provide support and creates what is commonly called an alveolus, or "socket."

Question 11

Which of the following statements about enamel is not true?

Accepted Answer

Tooth enamel is the hardest and most highly mineralized substance of the body. Wiith dentin, cementum, and dental pulp, it is one of the four major tissues that make up the tooth. It is totally acellular.

Question 12

What substance covers the surface of the anatomic root?

Accepted Answer

Cementum covers the surface of the anatomic root. It is a specialized calcified substance excreted by cells called cementoblasts within the root of the tooth.

Question 13

What portion of the pulp chamberextends toward the cusp?

Accepted Answer

The portion of the pulp chamber that extends toward the cusp is called pulp horn. It is made up of blood vessels, nerves, and cellular elements, including odontoblasts

Question 14

Which of the following glands have multiple separate ducts and are considered to be the smallest salivary glands?

Accepted Answer

Sublingual glands are present on each side underneath the tongue in the floor of the mouth. They have multiple separate ducts and are the smallest salivary glands.

Question 15

Persistent fever and neutropenia with persistently negative blood cultures is often caused by which of the following?

Accepted Answer

Persistent fever and neutropenia with persistently negative blood cultures is often caused by fungi. The relatively low numbers of fungi in the infection and medium requirements make fungi (choice A) more difficult to isolate, identify, and relate to a medical condition.

Question 16

Immunological failure is most directly related to which of the following?

Accepted Answer

A deficiency in immunoglobulin production or activity is directly related to susceptibility to common extracellular microbes, such as streptococci.

Question 17

What is the deepest layer of skin, which is sometimes called the subcutaneous or superficial connective tissue of the body?

Accepted Answer

Hypodermis is the deepest skin layer and is also called the subcutaneous or superficial connective tissue of the body.

Quiz 1: Dental Board