Question 1

Dental decay is:

Accepted Answer

A) a communicable bacterial infection. 
B) a disease that affects older adults. 
C) the most common chronic childhood disease. 
D) all of the above. 
A) a communicable bacterial infection. 
B) a disease that affects older adults. 
C) the most common chronic childhood disease. 
D) all of the above. D

Question 2

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) cannot be used to diagnose interproximal caries. 
D) can 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) cannot be used to diagnose interproximal caries. 
D) can be used to detect caries under an amalgam restoration. C

Question 3

The presence of lactobacilli (LB) in a patient's mouth indicates that the patient:

Accepted Answer

A) is diabetic. 
B) has a high sugar intake. 
C) has a low sugar intake. 
D) cannot tolerate milk-containing products. 
A) is diabetic. 
B) has a high sugar intake. 
C) has a low sugar intake. 
D) cannot tolerate milk-containing products. B

Question 4

The caries process can be slowed or prevented by:

Accepted Answer

A) eating more carbohydrates. 
B) taking antibiotics. 
C) using fluoride. 
D) using a saltwater rinse. 
A) eating more carbohydrates. 
B) taking antibiotics. 
C) using fluoride. 
D) using a saltwater rinse.

Question 5

A DIAGNOdent reading of 15 to 20 indicates which action(s)?

Accepted Answer

A) Preventive therapy 
B) No action 
C) Sealants 
D) Both a and c 
A) Preventive therapy 
B) No action 
C) Sealants 
D) Both a and c

Question 6

_____ is the most prevalent disease of childhood.

Accepted Answer

A) Diabetes 
B) Early childhood caries 
C) Respiratory infection 
D) Tonsillitis 
A) Diabetes 
B) Early childhood caries 
C) Respiratory infection 
D) Tonsillitis

Question 7

_____ is an infectious disease in which children live in constant pain from decayed teeth and swollen gums.

Accepted Answer

A) Trench mouth 
B) Early childhood caries 
C) Rampant decay 
D) All of the above 
A) Trench mouth 
B) Early childhood caries 
C) Rampant decay 
D) All of the above

Question 8

Rampant caries can be caused by:

Accepted Answer

A) xerostomia. 
B) not flossing. 
C) eating frequent and/or excessive amounts of sugar. 
D) both a and c. 
A) xerostomia. 
B) not flossing. 
C) eating frequent and/or excessive amounts of sugar. 
D) both a and c.

Question 9

Why are root caries becoming more prevalent?

Accepted Answer

A) The presence of xerostomia. 
B) People are keeping their teeth longer. 
C) Many medications of the elderly cause dry mouth. 
D) All of these are factors. 
A) The presence of xerostomia. 
B) People are keeping their teeth longer. 
C) Many medications of the elderly cause dry mouth. 
D) All of these are factors.

Question 10

Chewing one stick of xylitol gum three times a day will help to do all except:

Accepted Answer

A) increase salivary flow. 
B) assist in the remineralization of tooth surfaces. 
C) replace brushing. 
D) neutralize mouth acids. 
A) increase salivary flow. 
B) assist in the remineralization of tooth surfaces. 
C) replace brushing. 
D) neutralize mouth acids.

Question 11

Which is not an example of a fermentable carbohydrate?

Accepted Answer

A) Fruit sugar 
B) Bread, potatoes, and pasta 
C) Protein and fats 
D) Milk sugar 
A) Fruit sugar 
B) Bread, potatoes, and pasta 
C) Protein and fats 
D) Milk sugar

Question 12

Dissolution of calcium and phosphate from hydroxyapatite crystals is called:

Accepted Answer

A) decay. 
B) demineralization. 
C) remineralization. 
D) calcium depletion. 
A) decay. 
B) demineralization. 
C) remineralization. 
D) calcium depletion.

Question 13

Caries risk assessment tests include measuring the:

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 14

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 readings are extremely accurate. 
D) All of the above are not true. 
A) A false-positive is possible if plaque is present in fissures. 
B) Carious tooth structure reveals higher degrees of fluorescence. 
C) The readings are extremely accurate. 
D) All of the above are not true.

Question 15

Cariology,the study of caries,does not include the:

Accepted Answer

A) causes of dental caries. 
B) process of caries development. 
C) restoration of dental caries. 
D) risk management and prevention of dental caries. 
A) causes of dental caries. 
B) process of caries development. 
C) restoration of dental caries. 
D) risk management and prevention of dental caries.

Question 16

_____ caries is the first stage of a carious lesion.

Accepted Answer

A) Primary 
B) Incipient 
C) Frank 
D) Overt 
A) Primary 
B) Incipient 
C) Frank 
D) Overt

Question 17

The _____ protection of saliva is dependent on substances within the saliva,such as immunoglobulin.

Accepted Answer

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

Question 18

_____ caries is a carious lesion that occurs on the tooth around a restoration.

Accepted Answer

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

Question 19

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 is removed by the tongue or by rinsing the mouth with water or mouthwash. 
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 is removed by the tongue or by rinsing the mouth with water or mouthwash. 
D) It contains 99% more oral bacteria than the same amount of saliva.

Question 20

Oral bacteria are transmitted to infants through:

Accepted Answer

A) saliva from a caregiver's kisses. 
B) spoons or glassware shared with others. 
C) toys shared with other children or siblings. 
D) a, b, or c. 
A) saliva from a caregiver's kisses. 
B) spoons or glassware shared with others. 
C) toys shared with other children or siblings. 
D) a, b, or c.

Exam 13: Dental Caries

Dental decay is:

A laser caries detector:

The presence of lactobacilli (LB) in a patient's mouth indicates that the patient:

The caries process can be slowed or prevented by:

A DIAGNOdent reading of 15 to 20 indicates which action(s)?

_____ is the most prevalent disease of childhood.

_____ is an infectious disease in which children live in constant pain from decayed teeth and swollen gums.

Rampant caries can be caused by:

Why are root caries becoming more prevalent?

Chewing one stick of xylitol gum three times a day will help to do all except:

Which is not an example of a fermentable carbohydrate?

Dissolution of calcium and phosphate from hydroxyapatite crystals is called:

Caries risk assessment tests include measuring the:

Which is not true of laser caries detector readings?

Cariology,the study of caries,does not include the:

_____ caries is the first stage of a carious lesion.

The _____ protection of saliva is dependent on substances within the saliva,such as immunoglobulin.

_____ caries is a carious lesion that occurs on the tooth around a restoration.

Which is not true of dental plaque?

Oral bacteria are transmitted to infants through:

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