Deck 13: Dental Caries

Question 1

It is anticipated that future advances in _____ will provide dental professionals with a rapid method of assessing a patient's risk for dental caries before the patient leaves the dental chair.

A)esthetic restorative materials
B)dental explorer metallurgy
C)molecular biology
D)cavity preparation design

Answer 1

molecular biology

Question 2

Rampant caries can be caused by:

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

Answer 2

both a and c.

Question 3

Caries risk assessment tests include measuring the:

A)production of stomach acid and GERD.
B)saliva flow rate and bacterial testing.
C)saliva pH and buffering capacity.
D)maternal DNA.

Answer 3

saliva flow rate and bacterial testing.

Question 4

A laser caries detector:

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.

Question 5

Which is not true about the process of demineralization and remineralization?

A)It may occur without loss of tooth structure.
B)Demineralization always causes loss of tooth structure.
C)It is a continual process characterized by demineralization and remineralization.
D)If more demineralization than remineralization occurs, a caries lesion develops.

Question 6

The caries process requires a susceptible tooth,a diet rich in _____ and _____.

A)fermentable carbohydrates; specific bacteria
B)fermentable carbohydrates; any bacteria
C)fats; specific bacteria
D)acidic food; poor oral hygiene

Question 7

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

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

Question 8

Which is not true of dental plaque?

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 9

Which is not an example of a fermentable carbohydrate?

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

Question 10

The caries process can be slowed or prevented by:

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

Question 11

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

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

Question 12

Destruction of the tooth structure is not:

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

Question 13

The carious lesions found frequently in elderly patients are:

A)incipient lesions.
B)rampant caries.
C)root caries.
D)secondary caries.

Question 14

Dissolution of calcium and phosphate from hydroxyapatite crystals is called:

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

Question 15

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

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

The specific group(s) of bacteria responsible for dental caries is(are):

A)staphylococci.
B)mutans streptococci.
C)lactobacilli.
D)b and c.

Question 17

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

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

Question 18

_____ caries is the first stage of a carious lesion.

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

Question 19

Oral bacteria are transmitted to infants through:

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.

Question 20

Dental decay is:

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

Question 21

_____ is the most prevalent disease of childhood.

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

Question 22

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

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

Question 23

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

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

Question 24

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

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

Question 25

Which is not true of laser caries detector readings?

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 26

New restorative materials help reduce recurrent decay by bonding to the tooth surface and releasing fluoride.

Question 27

Which is true regarding caries detection?

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)Color change of dyes applied to the inside of a cavity preparation may indicate whether caries remain.

Question 28

Laser caries detectors work by passing a beam through the tooth surface.A clean,healthy tooth will have a baseline reading of near:

A)0.
B)10.
C)52.
D)100.

Question 29

Early childhood caries (ECC) is more prevalent in:

A)lower socioeconomic families that have limited access to care.
B)particular ethic groups and children with special needs.
C)children living in an area lacking water fluoridation.
D)all of the above.

Question 30

Why are root caries becoming more prevalent?

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.