The student instrument

DCP (dental caries)

For all Dr. Kauser’s lectures and the 2 lectures of Dr. Nizam.

Write the correct answer.

1- Dental plaque that develops over a long period of time becomes ………….2- Fermentable carbohydrates are …………… that are easily metabolized by the

bacteria present in our mouth to form acid compounds.3- ……….. a type of complex carbohydrates are harmless because they are not

digested in the mouth.4- The plaque remains acid for some time, taking ……….. minutes to return to

its normal pH. 5- ………… is most cariogenic sugar.

Circle the correct answer.

1-Residual caries are:

a.caries that are very deep to the dentin

b. demeneralized tissue that are left in place before a filling is placed

c. carious enamel that does not affect the dentin

2- Inactive lesions are:

a. progressive

b. arrested

c. is not considered a carious lesion

3- Moderate challenge :

a. Involves anterior teeth which are usually caries -free

b. are on the occlusal part of the teeth

c. are on the proximal surface of the posterior teeth.

4- Hyposalivation causes:

a. rampant caries

b. arrested caries

c. multiple caries

5-ECC stands for and they are another name of nursing caries :

a. early childhood caries

b. early corrosive caries

c. early cast caries

6- This picture shows :a. Caries in the enamelb. Caries in the dentinec. Caries in the root

7- _________ slows down the progression of lesions.

a. fluoride

b. calcium

c. both a and b

8-In a carious enamel the first thing to do is:

a. Clean the tooth, wet it , and dry it b. Wet the tooth, clean it , then dry it c. Dry the teeth ,wet it , then clean it

9-Demeneralizatin is greatest in:

a. anterior teethb. subsurfacec. interproximal surface

10- A matty appearance on the tooth indicates ________ while the shiney appearance indicates________.

a. active , arrested

b. deep, superficial

c. arrested , active

11-__________is deep to the body of the lesion is a relatively well mineralized zone.

a. the body of lesion

b. translucent zone

c. surface zone

12- When sugar consumption has ceased, Saliva can wash away sugars and buffer the acid. Calcium and Phosphates can again enter the tooth.

a. During remenirelizationb. During demernerilazationc. When eating low molecular carbohydrates

13- Caries affect the tooth reaching to the dentin and pulp in a :

a. Diamond shapeb. triangular shapec. straight

14-_______________Is the deposition of mineral within the dentinal tubules and it requires the presence of a vital odontoblast .

a. odontoclastb. tubular sclerosisc. active lesions of caries

15-When lesions progress rapidly we get a

a. dead tracts b. active lesionsc. ameloclast

16-repetitve dentin is

a. formation of new odontoblast

b. destruction of odontoblast

c. dentin formation

17- sudden inflammation of the pulp is called

a. sudden pulpitsb. acute pulpitisc. chronic pulpits

18-chronic pulpitis is __________ and acute pulpitis is _________.

a. Always painful, symptomlessb. Painful, is sharply painfulc. Symptomless, always painful

19- We use radiographs to :

a. Diagnose caries in the dentinb. Diagnose caries on the proximal areas of the enamelc. All of the above.

20-In pulpitis if pain persists for minutes or hours after removal of the stimulus it indicates

a. reversable pulpitis

b. irreversable pulpitis

c. pulpitis

21-The tooth is tender to bite on and tender to touch because it acts as a piston in its socket, transmitting forces directly to the inflamed periapical tissues.

a. periapical inflamation

b. periodontal inflamation

c. pulp inflammation

22-Clinically, actively progressing lesions are :

a. mat and hard

b. soft and wet

c. shiny and hard

23- This is primary caries next to a filling, caused by the biofilm at the tooth surface or the surface of any cavity.

a. Secondary cariesb. Residual cariesc. Primary caries

24.________ forms the basis for treatment decision.

a. prognosis

b. prevention

c. diagnosis

25. D3 indicates lesions into:

a. pulp

b. dentin

c. enamel

26. Sharp probes should never be used to detect :

a. the feel of early cavitations

b. suspicious carious lesions

c. the superficial caries

27. _______ are hard and are often located in a plaque free area coronal to the gingival margin and may be cavitated.

a. active lesion

b. arrested lesion

c. secondary caries

28- Root surface lesions tend to spread ______ and combine with minor neighboring lesions and may thus eventually encircle the tooth.

a. Laterallyb. Occlusalyc. apically

29- The lesion visible on a wet surface is all the way through ___________________

a. enamel

b. dentinec. All of the above.

30- To avoid missing micro-caries we use:

a. bitewing radiographs

b. X-ray radio graph

c. DIFOTI

31- Hidden caries are:

a. Micro-cariseb. missed during visual examination but found on radiographsc. Missed on radiograph but found on visual examination

32- Caries can affect the gingival in which the gingiva is :

a.red and swollen and bleeds easily

b. pale and stipple in appearance

c. none of the above

33- When we can’t use bitewing radiographs for example when teeth are crowded or in pregnant women we use:

a. FOTI

b. DIFOTI

c.infrared thermography

34- caries at the margin of a restoration:

a. secondary caries

b. primary caries

c. residual caries

35- Recurrent caries usually occurs _______and ________ in areas of plaque stagnation .

a. Approximally , cervicallyb. Apically , occlusalyc. Apically, approximally

36- Ditching is:

a. When the restoration is brokenb. When the margins of the amalgam are fracturedc. When the tooth is extracted

37- Sometime a __________ on radiograph indicates residual caries left when the restoration was placed .

a. Radiolucencyb. Radiograph imagec. Radiodense

38- Plaque and bacteria with simple sugar produce acid and is in the

a. demenerlization stage

b. reminarlization stage

c. acidic stage

True or fales:

1- Dental caries is a chronic infectious disease that involves the demineralization of the mineralized tissues of teeth by acids produced by metabolism of dietary carbohydrates by plaque micro-organisms, but is influenced by fluoride and other factors. ( )

2- If the enamel is worn off (damaged) by the dental caries the next part to get affected is the cementum. ( )

3- The tooth is sensitive and we can’t bite down on tooth when the caries are on the enamel. ( )

4- Epidemiology is the study of health and disease states in individuals rather than populations. ( )

5- People who are financially poor and those who live in rural areas are more prone to caries than other people. ( )

6- When naming caries we start with the severity then the anatomical site and then the status of the lesion. ( )

7- primary lesion begins on a surface with no previous lesion or restoration. 8- Moderate caries are the least in severity. 9- GV black classification of caries lesions,Class 3 is Proximal surfaces on

anterior teeth. 10- The mount and hume classification for dental caries involves the size and

the severity. 11- Dental caries are reversible. 12-Acidic foods/drinks do cause caries on their own . 13-Xerostomia means dry mouth and it can cause caries. 14- When the pH is more than 6.5 the stage is favouring to demeneralization. 15- Saliva Saturated in calcium and phosphate ions causes caries. 16- The tooth is continuously bathed with fluoride in the enamel and dentin..

The end

Done by: Hessa Habib