Question 1

New restorative materials help reduce recurrent decay by eliminating the tiny space between the tooth and the restorative material.

Accepted Answer

A) True 
 B)False  True

Question 2

Which is not true of laser caries detector readings?

Accepted Answer

A) A false-positive is possible if plaque is present in fissures. 
B) Carious tooth structure reveals higher degrees of fluorescence. 
C) The laser caries detector is not a stand-alone diagnostic tool. 
D) The laser caries detector is useful for locating subgingival caries. 
A) A false-positive is possible if plaque is present in fissures. 
B) Carious tooth structure reveals higher degrees of fluorescence. 
C) The laser caries detector is not a stand-alone diagnostic tool. 
D) The laser caries detector is useful for locating subgingival caries. D

Question 3

Which of the following types of caries is associated with exposed root surfaces?

Accepted Answer

A) Incipient lesions 
B) Rampant caries 
C) Root caries 
D) Secondary caries 
A) Incipient lesions 
B) Rampant caries 
C) Root caries 
D) Secondary caries C

Question 4

Which of the following is the most common source of transmission of disease-causing mutans streptococci (MS)to infants?

Accepted Answer

A) Food 
B) Clothing 
C) Furniture 
D) Mothers 
A) Food 
B) Clothing 
C) Furniture 
D) Mothers

Question 5

Which of the following are examples of caries risk assessment tests?

Accepted Answer

A) Production of stomach acid and GERD 
B) Saliva flow rate and bacterial testing 
C) Saliva pH and buffering capacity 
D) Maternal DNA 
A) Production of stomach acid and GERD 
B) Saliva flow rate and bacterial testing 
C) Saliva pH and buffering capacity 
D) Maternal DNA

Question 6

Which of the following types of caries occurs primary on occlusal surfaces?

Accepted Answer

A) Smooth surface 
B) Pit and fissure 
C) Recurrent 
D) Root surface 
A) Smooth surface 
B) Pit and fissure 
C) Recurrent 
D) Root surface

Question 7

Which is true regarding caries detection?

Accepted Answer

A) Research shows that a sharp explorer stick is the most effective technique for diagnosing occlusal decay. 
B) Radiographs are effective for diagnosing occlusal and proximal caries. 
C) A dark discoloration is always caries. 
D) Several types of devices have been developed that can provide a higher level of discrimination than an explorer in the diagnosis of dental caries. 
A) Research shows that a sharp explorer stick is the most effective technique for diagnosing occlusal decay. 
B) Radiographs are effective for diagnosing occlusal and proximal caries. 
C) A dark discoloration is always caries. 
D) Several types of devices have been developed that can provide a higher level of discrimination than an explorer in the diagnosis of dental caries.

Question 8

Which of the following is one of the causes of rampant caries?

Accepted Answer

A) Xerostomia 
B) Not flossing 
C) Open tooth contacts 
D) Acid reflux 
A) Xerostomia 
B) Not flossing 
C) Open tooth contacts 
D) Acid reflux

Question 9

The _______ protection of saliva is dependent on calcium,phosphate,and fluoride.

Accepted Answer

A) physical 
B) chemical 
C) antibacterial 
D) buffering 
A) physical 
B) chemical 
C) antibacterial 
D) buffering

Question 10

Which of the following types of bacteria are associated with a high sugar intake?

Accepted Answer

A) Porphyromonas gingivalis 
B) Bacteroides gingivalis 
C) Lactobacilli 
D) Streptococcus mutans 
A) Porphyromonas gingivalis 
B) Bacteroides gingivalis 
C) Lactobacilli 
D) Streptococcus mutans

Question 11

What is the primary reason why root caries is becoming more prevalent?

Accepted Answer

A) There is a greater consumption of fermentable carbohydrates. 
B) People are keeping their teeth longer. 
C) There are better diagnostic methods. 
D) Fluoridated water creates more acid oral conditions. 
A) There is a greater consumption of fermentable carbohydrates. 
B) People are keeping their teeth longer. 
C) There are better diagnostic methods. 
D) Fluoridated water creates more acid oral conditions.

Question 12

Which of the following is an infectious disease in which children live in constant pain from decayed primary teeth and swollen gums?

Accepted Answer

A) Trench mouth 
B) Early childhood caries 
C) Rampant caries 
D) Gingivitis 
A) Trench mouth 
B) Early childhood caries 
C) Rampant caries 
D) Gingivitis

Question 13

Which of the following is the most prevalent disease of childhood?

Accepted Answer

A) Insulin dependent diabetes 
B) Early childhood caries 
C) Respiratory infection 
D) Tonsillitis 
A) Insulin dependent diabetes 
B) Early childhood caries 
C) Respiratory infection 
D) Tonsillitis

Question 14

Which of the following is true of dental caries?

Accepted Answer

A) It is a communicable bacterial infection. 
B) It is a disease that affects older adults, but is rare in children. 
C) It has been largely eliminated with the use of fluoride. 
D) The emphasis in fighting caries is shifting toward restorations. 
A) It is a communicable bacterial infection. 
B) It is a disease that affects older adults, but is rare in children. 
C) It has been largely eliminated with the use of fluoride. 
D) The emphasis in fighting caries is shifting toward restorations.

Question 15

Which of the following is true concerning early childhood caries (ECC)?

Accepted Answer

A) It is not dependent on socioeconomic status. 
B) It is not associated with any particular ethic group. 
C) It is not common among children living in an area lacking water fluoridation. 
D) It is a transmissible disease. 
A) It is not dependent on socioeconomic status. 
B) It is not associated with any particular ethic group. 
C) It is not common among children living in an area lacking water fluoridation. 
D) It is a transmissible disease.

Question 16

Incipient caries is the ______ stage of development of a carious lesion.

Accepted Answer

A) first 
B) second 
C) frank 
D) overt 
A) first 
B) second 
C) frank 
D) overt

Question 17

A laser caries detector:

Accepted Answer

A) works on the principle that a carious tooth will show less fluorescence and a clean, healthy tooth will show more fluorescence. 
B) is effective for adult teeth but not for primary teeth. 
C) can be used to diagnose interproximal caries. 
D) cannot be used to detect caries under an amalgam restoration. 
A) works on the principle that a carious tooth will show less fluorescence and a clean, healthy tooth will show more fluorescence. 
B) is effective for adult teeth but not for primary teeth. 
C) can be used to diagnose interproximal caries. 
D) cannot be used to detect caries under an amalgam restoration.

Question 18

Which is not true of dental plaque?

Accepted Answer

A) It is a colorless, sticky coating on the teeth. 
B) It contains an adhesive substance called the pellicle. 
C) It contains food debris and does not contain bacteria. 
D) It contains 99% more oral bacteria than the same amount of saliva. 
A) It is a colorless, sticky coating on the teeth. 
B) It contains an adhesive substance called the pellicle. 
C) It contains food debris and does not contain bacteria. 
D) It contains 99% more oral bacteria than the same amount of saliva.

Question 19

Which of the following is not true regarding the demineralization of the tooth structure?

Accepted Answer

A) Demineralization is caused by the bacterial acid released after eating a fermentable carbohydrate. 
B) Demineralization is increased as fermentable carbohydrates are eaten more frequently. 
C) Demineralization is repaired by cooked starch, such as bread, potatoes, rice, and pasta. 
D) Demineralization is increased as the teeth are exposed to fermentable carbohydrates more frequently. 
A) Demineralization is caused by the bacterial acid released after eating a fermentable carbohydrate. 
B) Demineralization is increased as fermentable carbohydrates are eaten more frequently. 
C) Demineralization is repaired by cooked starch, such as bread, potatoes, rice, and pasta. 
D) Demineralization is increased as the teeth are exposed to fermentable carbohydrates more frequently.

Question 20

The three factors required for the development of caries are a susceptible tooth,a diet rich in fermentable carbohydrates,and:

Accepted Answer

A) specific bacteria. 
B) any bacteria. 
C) fats. 
D) acidic food. 
A) specific bacteria. 
B) any bacteria. 
C) fats. 
D) acidic food.

Exam 13: Dental Caries

New restorative materials help reduce recurrent decay by eliminating the tiny space between the tooth and the restorative material.

Which is not true of laser caries detector readings?

Which of the following types of caries is associated with exposed root surfaces?

Which of the following is the most common source of transmission of disease-causing mutans streptococci (MS)to infants?

Which of the following are examples of caries risk assessment tests?

Which of the following types of caries occurs primary on occlusal surfaces?

Which is true regarding caries detection?

Which of the following is one of the causes of rampant caries?

The _______ protection of saliva is dependent on calcium,phosphate,and fluoride.

Which of the following types of bacteria are associated with a high sugar intake?

What is the primary reason why root caries is becoming more prevalent?

Which of the following is an infectious disease in which children live in constant pain from decayed primary teeth and swollen gums?

Which of the following is the most prevalent disease of childhood?

Which of the following is true of dental caries?

Which of the following is true concerning early childhood caries (ECC)?

Incipient caries is the ______ stage of development of a carious lesion.

A laser caries detector:

Which is not true of dental plaque?

Which of the following is not true regarding the demineralization of the tooth structure?

The three factors required for the development of caries are a susceptible tooth,a diet rich in fermentable carbohydrates,and:

History of Dentistry

The Professional Dental Assistant

The Dental Healthcare Team

Dental Ethics

Dentistry and the Law

General Anatomy

General Physiology

Oral Embryology and Histology

Head and Neck Anatomy

Landmarks of the Face and Oral Cavity

Overview of the Dentitions

Tooth Morphology

Periodontal Disease

Preventive Dentistry

Nutrition

Oral Pathology

Microbiology

Disease Transmission and Infection Prevention

Principles and Techniques of Disinfection

Principles and Techniques of Instrument Processing and Sterilization

Regulatory and Advisory Agencies

Chemical and Waste Management

Dental Unit Waterlines

Ergonomics

The Patient Record

Vital Signs

Oral Diagnosis and Treatment Planning

The Special Needs and Medically Compromised Patient

Principles of Pharmacology

Assisting in a Medical Emergency

The Dental Office

Delivering Dental Care

Dental Hand Instruments

Dental Handpieces and Accessories

Moisture Control

Anesthesia and Pain Control

Foundations of Radiography, Radiographic Equipment, and Radiation Safety

Digital Imaging, Dental Film, and Processing Radiographs

Legal Issues, Quality Assurance, and Infection Prevention

Intraoral Imaging

Extraoral Imaging

Restorative and Esthetic Dental Materials

Dental Liners, Bases, and Bonding Systems

Dental Cements

Impression Materials

Laboratory Materials and Procedures

General Dentistry

Matrix Systems for Restorative Dentistry

Fixed Prosthodontics

Provisional Coverage

Removable Prosthodontics

Dental Implants

Endodontics

Periodontics

Oral and Maxillofacial Surgery

Pediatric Dentistry

Coronal Polishing

Dental Sealants

Orthodontics