Quiz 6

Question 0

Types of acquired pellicle

Answer 0

• surface pellicle (unstained)
• surface pellicle (stained) - pellicle that has taken on extrinsic stain
• subsurface pellicle; embedded in tooth structure

Question 1

Tenacious membranous layer that is amorphous, acellular, and organic. It’s thickness varies from 0.1-0.8 um and is greater near the gingival margin

Answer 1

Acquired pellicle

Question 2

Participates in biofilm formation by aiding the adherence of microorganisms

Answer 2

Nidus for bacteria

Question 3

Dense non mineralized complex mass of colonies in a gel like intermicrobial matrix; adheres firmly to the acquired pellicle thus to the teeth, calculus and fixed removable restorations

Answer 3

Dental biofilm

Question 4

Stages of formation (dental biofilm)

Answer 4

• Formation of pellicle (bacteria attach to pellicle)
• bacterial multiplication and colonization (micro colonies form in layers)
• biofilm growth and maturation
• matrix formation (supra gingival -salvia, sub gingival- gingival sulcus fluid, exudate)

Question 5

Sub gingival dental biofilm comes from…

Answer 5

The apical proliferation of microorganisms from the supra gingival biofilm

Question 6

Sub gingival microorganisms

Answer 6

• differ from that of the supra gingival biofilm

- includes more anaerobic and motile organisms and are predominately gram- negative

Question 7

Composition of dental biofilm

Answer 7

Composed of microorganisms and intermicrobial matrix

Question 8

Organic and inorganic solids constitute approx

Answer 8

20%, 80% water

Question 9

Inorganic elements in biofilm

Answer 9

Calcium, phosphorus, fluoride

Question 10

Organic components in biofilm

Answer 10

Carbohydrates- from dietary sucrose, contribute to adherence of the microorganisms to each other and to the tooth

Proteins- supra gingival- contain proteins derived from salvia

Sub gingival - contains proteins derived from gingival sulcus fluid

Lipids- may include gram bacteria

Question 11

During formation biofilm starts at…

Answer 11

Gingival margin on proximal surfaces and spears coronally

Question 12

_______ surfaces may have the least biofilm because of the activity of the tongue

Answer 12

Palatal

Question 13

Microorganism in biofilm

Answer 13

• mutants streptococci ( S. Mutants and Streptococuss sobrinus)
• lactobacillus

Question 14

Loosely adherent mass of bacteria and cellular debris

Answer 14

Materia alba

Question 15

Appears as white/graying white material that is visible without disclosing agent

Answer 15

Materia alba

Question 16

Prevention of Materia alba

Answer 16

Rigorous rinsing, water irrigation, brushing

Question 17

Demineralization and caries may occur under

Answer 17

Materia alba

Question 18

Plaque index

Answer 18

To asses the thickness of biofilm at the gingival area

Question 19

Plaque control record

Answer 19

To record the presence of dental biofilm on individual tooth surfaces to permit the patient to visualize progress while learning biofilm control

Question 20

Epidemiologic survey

Answer 20

Provide information on the trends and patterns of oral health and disease in populations ex. DMFT

Question 21

To asses the extent of biofilm and debris over a tooth surface. Debris is defined for the PHP as the soft foreign material consisting of dental biofilm materia alba, and good debris that is loosely attached to the tooth surfaces

Answer 21

Patient hygiene performance

Question 22

To assess oral cleanliness by estimating the tooth surface covered with debris/ calculus

Answer 22

Simplified oral hygiene index (OHI-S)

Question 23

To assess the state of periodontal health of an individual patient

Answer 23

Periodontal screening and recording

Question 24

To locate area of gingival sulcus bleeding and color changes in order to recognize an record the presence of early inflammatory gingival disease

Answer 24

Sulcus bleeding index

Question 25

To record the presence or absence of gingival inflammation as determine by bleeding from interproximal gingival sulci

Answer 25

Gingival bleeding index

Question 26

To assess the presence of inflammation in the interdental area as indicated by the presents or absence of bleeding

Answer 26

Eastman interdental bleeding index

Question 27

To assess the severity of gingivitis based on color, consistency, and bleeding on probing

Answer 27

Gingival index

Question 28

To determine total dental caries experience past and present by recording either the number of affected teeth or tooth surfaces

Answer 28

Permanent dentition : decayed, missing and filled teeth or surfaces

Question 29

To determine the dental caries experience for primary teeth present in the oral cavity by evaluating teeth or surfaces

Answer 29

Primary dentition : decayed, indicated for extraction and filled

Question 30

To determine dental caries experience for children. Only primary teeth are evaluated

Answer 30

Primary dentition: decayed, missing and filled

Question 31

To provide case definitions that determine caries status of children 5 years of age or younger

Answer 31

Early childhood caries

Question 32

To determine total root caries experience for individuals and groups and provide a direct, simple method for recording and making comparisons

Answer 32

Root caries index

Question 33

To measure the prevalence and severity of dental fluorosis

Answer 33

Deans fluorosis index

Question 34

To measure the prevalence and severity of dental fluorosis, more sensitive than deans index in identifying the mildest signs of fluorosis

Answer 34

Tooth surface index Of fluorosis