DH 372 Module B Exam | 165 Questions
1. What is attrition?: wearing away of a tooth as a result of tooth-to-tooth contact
2. What causes attrition?: stress, psychological factors or occlusal interferences
3. What is erosion?: loss of tooth substance by a chemical process that doesn't involve
bacterial action
4. What causes erosion?: extrinsic and intrinsic acids
5. What extrinsic acids cause erosion?: occupational, food, drugs
6. What intrinsic acids cause erosion?: acid reflux (GERD), bulimia nervosa (purging)
7. What is abrasion?: mechanical wearing away of tooth substance by forces other than
mastication
8. What causes abrasion?: abrasives in dentifrices, stiffness and pressure of brushing teeth
9. What habits cause abrasion?: pipe smoking, chewing pens, betel nut chewing, and pica
10.What occupational causes lead to abrasion?: cement factories, granites work, iron mines
11.What is abfraction?: to break away; results from microfractures in the hydrox- yapatite
crystals of enamel and dentin
12.What causes abfraction?: traumatic occlusion and occlusal forces
13.What surfaces are in Class I?: - occlusal of premolars and molars
- facial and lingual surfaces of molars
- lingual surfaces of maxillary incisors
14.What surfaces are in Class II caries?: proximal surfaces of premolars and molars
15.What surfaces are in Class III caries?: proximal surfaces of incisors and canines that do
not involve the incisal angle
16.What surfaces are in Class IV caries?: proximal surfaces of incisors or canines that involve the
incisal angle
17.What surfaces are in Class V caries?: cervical 1/3 of facial or lingual surfaces
18.What surfaces are in Class VI caries?: incisal edges of anterior teeth and cusp tips of posterior
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, DH 372 Module B Exam | 165 Questions
teeth
19.What are the 3 American dental Association Caries Classification System (CCS)?: - initial
carious lesion
- moderate carious lesion
- advanced carious lesion
20.What class of caries is also called incipient or early caries?: initial carious lesion
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, DH 372 Module B Exam | 165 Questions
21.What color are initial carious lesions?: - enamel may appear white (white spots)
- can appear brownish in pits and fissures
22.What class of caries do not cavitate through the enamel?: initial carious lesion
23.What class of caries extends through the enamel into the dentin?: Moderate carious lesion
24.What class of caries spreads wide once caries reaches dentin?: Moderate carious lesion
25.What class of caries exposes the dentin?: Advanced carious lesion
26.What class of caries shows radiographic evidence of caries extending to inner half of dentin or
more towards pulp: Advanced carious lesion
27.What is meant by a pit and fissure caries?: caries begin in a minute fault in the enamel
28.What is meant by smooth surface caries?: caries begin in smooth surfaces where there is no
pit or groove.
29.Where do smooth surface caries occur?: where dental biofilm is protected from removal ie
proximal tooth surfaces, cervical thirds of teeth, and other difficult- to- clean areas
30.What is meant by primary caries?: Occurs on a surface not previously affected
31.What is meant by recurrent caries?: Occurs on a surface adjacent to a restoration
32.What is meant by arrested caries?: carious lesion that has become stationary and does not
show a tendency to progress further
33.What is meant by rampant caries?: sudden, rapidly spreading caries
34.What is a result of rampant caries?: early pulp involvement
35.What are the 3 types of rampant caries?: early childhood, adolescent, and xerostomia-
induced
36.What are some common causes of early childhood caries?: routine use of a bottle when going
to sleep, prolonged at-will breastfeeding
37. What teeth/portion of the teeth are involved in early childhood caries?: -
max. anterior teeth at cervical third of the tooth
38. What is a strong indicator of the initiation of ECC (early childhood caries)?-
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1. What is attrition?: wearing away of a tooth as a result of tooth-to-tooth contact
2. What causes attrition?: stress, psychological factors or occlusal interferences
3. What is erosion?: loss of tooth substance by a chemical process that doesn't involve
bacterial action
4. What causes erosion?: extrinsic and intrinsic acids
5. What extrinsic acids cause erosion?: occupational, food, drugs
6. What intrinsic acids cause erosion?: acid reflux (GERD), bulimia nervosa (purging)
7. What is abrasion?: mechanical wearing away of tooth substance by forces other than
mastication
8. What causes abrasion?: abrasives in dentifrices, stiffness and pressure of brushing teeth
9. What habits cause abrasion?: pipe smoking, chewing pens, betel nut chewing, and pica
10.What occupational causes lead to abrasion?: cement factories, granites work, iron mines
11.What is abfraction?: to break away; results from microfractures in the hydrox- yapatite
crystals of enamel and dentin
12.What causes abfraction?: traumatic occlusion and occlusal forces
13.What surfaces are in Class I?: - occlusal of premolars and molars
- facial and lingual surfaces of molars
- lingual surfaces of maxillary incisors
14.What surfaces are in Class II caries?: proximal surfaces of premolars and molars
15.What surfaces are in Class III caries?: proximal surfaces of incisors and canines that do
not involve the incisal angle
16.What surfaces are in Class IV caries?: proximal surfaces of incisors or canines that involve the
incisal angle
17.What surfaces are in Class V caries?: cervical 1/3 of facial or lingual surfaces
18.What surfaces are in Class VI caries?: incisal edges of anterior teeth and cusp tips of posterior
1/9
, DH 372 Module B Exam | 165 Questions
teeth
19.What are the 3 American dental Association Caries Classification System (CCS)?: - initial
carious lesion
- moderate carious lesion
- advanced carious lesion
20.What class of caries is also called incipient or early caries?: initial carious lesion
2/9
, DH 372 Module B Exam | 165 Questions
21.What color are initial carious lesions?: - enamel may appear white (white spots)
- can appear brownish in pits and fissures
22.What class of caries do not cavitate through the enamel?: initial carious lesion
23.What class of caries extends through the enamel into the dentin?: Moderate carious lesion
24.What class of caries spreads wide once caries reaches dentin?: Moderate carious lesion
25.What class of caries exposes the dentin?: Advanced carious lesion
26.What class of caries shows radiographic evidence of caries extending to inner half of dentin or
more towards pulp: Advanced carious lesion
27.What is meant by a pit and fissure caries?: caries begin in a minute fault in the enamel
28.What is meant by smooth surface caries?: caries begin in smooth surfaces where there is no
pit or groove.
29.Where do smooth surface caries occur?: where dental biofilm is protected from removal ie
proximal tooth surfaces, cervical thirds of teeth, and other difficult- to- clean areas
30.What is meant by primary caries?: Occurs on a surface not previously affected
31.What is meant by recurrent caries?: Occurs on a surface adjacent to a restoration
32.What is meant by arrested caries?: carious lesion that has become stationary and does not
show a tendency to progress further
33.What is meant by rampant caries?: sudden, rapidly spreading caries
34.What is a result of rampant caries?: early pulp involvement
35.What are the 3 types of rampant caries?: early childhood, adolescent, and xerostomia-
induced
36.What are some common causes of early childhood caries?: routine use of a bottle when going
to sleep, prolonged at-will breastfeeding
37. What teeth/portion of the teeth are involved in early childhood caries?: -
max. anterior teeth at cervical third of the tooth
38. What is a strong indicator of the initiation of ECC (early childhood caries)?-
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