Pedodontics #1 – Unidontia

1. Fordyce granules are:

Ectopic sebaceous glands

Epithelial inclusion cysts

Remnants of the dental lamina

Found on the buccal and lingual aspects of the alveolus

2. The rubber dam is particularly adaptable to the primary 2nd molar because the

Occluso cervical height favours its retention

Smaller diameter of crown favours its retention

Cervical constriction of crown favours its retention

Mesiobuccal bulge favours its retention

3. In primary dentition, cusp of carabelli is seen in

Mandibular first molar

Maxillary first molar

Maxillary second molar

Mandibular second molar

4. When calcium hydroxide is placed in direct contact with viable pulp tissue the major immediate reaction is

Severe inflammatory response

Moderate inflammatory response

Mild inflammatory response

Surface necrosis

5. Differences between child and adult patient are

Both (a) and (b)

Dentist to the parent relationship

Dentist to the patient relationship

Physical, emotional and psychological development

6. Enamel has no possibility of repair because

It is a keratin tissue and has no blood vessels

Its formative cells are lost once it is completely formed

It has no direct connection with the pulp

It has a small percent of organic content

7. Three different variations in the appearance of pits and fissures in crosssection include all of the following except

I type

V type

U type

S type

8. A young permanent incisor with an open apex has a pinpoint exposure due to a traumatic injury that occurred 24 hours previously. The best treatment is _____.

Initiate a calcium hydroxide pulpectomy

Open the pulp chamber to find healthy pulp tissue and perform a pulpotomy

Place calcium hydroxide on the pinpoint exposure

Initiate conventional root canal treatment with gutta-percha

9. In preparing a primary first molar for a stainless steel crown, the surface requiring the least amount of reduction is

Lingual

Occlusal

Mesial

Facial

10. All of the following are true when comparing the normal child periodontium to the normal adult periodontium except:

The cementum is thicker and more dense than that of the adult

There is greater blood and lymph supply

Attached gingiva is not as wide

The alveolar crest is flatter

11. The most common congenitally missing primary tooth is the:

Primary maxillary canine

Primary mandibular canine

Primary maxillary lateral incisor

Primary mandibular first molar

12. Your patient is 9 years old. The mandibular left first primary molar has a large, carious lesion on the distal and on the occlusal and the tooth has greater mobility than what you would normally expect. You should _____.

Extract the tooth and consider space maintenance

Perform a pulpectomy

Take a radiograph of the area

Perform a pulpotomy

13. The KRI paste is composed of

Iodoform,camphor,parachlorophenol and menthol

Iodoform and ZOE

Parachlorophenol,camphor and menthol

Calcium hydroxide and iodoform

14. Generally, a 20 second etching time is recommended. Enamel that has been exposed to fluoride may be resistant to etching and may aced to be exposed for longer periods.

Both the statements are true

First statement is false and the second is true

First statement is true and the second is false

Both the statements are false

15. Where do lesions commonly occur in the primary form of acute herpetic gingivostomatitis?

Buccal mucosa

Tonsils, hard and soft palate

All of the above

Tongue

16. Chlorhexidine, achemotherapeutic agent used for treating plaque, calculi and gingivitis is a

Quaternary ammonium compounds

Bisguanide

Antibiotics

Organic compound

17. Formocresol has been shown to have a very good success rate when used as a medicament for pulpotomy procedures. Why is there continued interest to find another medicament that performs as well as or better than formocresol?

It has been demonstrated that formocresol may cause spontaneous abortion.

It has been demonstrated that formocresol may cause failure to develop adequate lung capacity in children.

Application of formocresol is a clinically timeconsuming procedure.

Formocresol is toxic and there is possible bloodborne spread to vital organs.

18. Which tooth is the only anterior tooth in either dentition to have a shorter inciso-cervical height than the mesio-distal width?

The primary mandibular central incisor

The primary maxillary lateral incisor

The primary mandibular lateral incisor

The primary maxillary central incisor

19. Your patient is 8 years old. Teeth #8 and #9 have approximately 50% of their crowns erupted. One month ago, the patient fell from a skateboard and hit teeth #8 and #9 on the sidewalk. The radiograph today shows open apices of these teeth, normal PDL, and no apparent periapical radiolucency. The patient has no reaction to electrical pulp tests. What is your treatment of choice?

Calcium hydroxide apexification technique

Formocresol apexification technique

Calcium hydroxide pulpotomy

Reappoint for exam and radiographs in 6 weeks

20. A lady with an Infant reported to clinic with the complaint of white teeth like structure, at the level of gingiva in mandibular anterior region. What should dentist do?

Extract the structure under GA

Extract it under la

Selective grinding & let it remain

Reassure the parents as root will develop later

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