Pedodontics #4 – Unidontia

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

I type

U type

V type

S type

2. Fordyce granules are:

Epithelial inclusion cysts

Ectopic sebaceous glands

Remnants of the dental lamina

Found on the buccal and lingual aspects of the alveolus

3. On the health history form, the mother of a 6-year-old new patient notes that the child is moderately mentally challenged. The dentist should _____.

Use conscious sedation

Use restraints after obtaining informed consent

Refer to a pediatric dentist

Use a Tell-Show-Do technique of behavior management

4. The KRI paste is composed of

Calcium hydroxide and iodoform

Parachlorophenol,camphor and menthol

Iodoform,camphor,parachlorophenol and menthol

Iodoform and ZOE

5. A 1-year-old patient has his first dental examination. The dentist reviews with the parent when to expect the next teeth to erupt, teething, oral hygiene tips for toddlers, and discusses fluoride issues with bottled water and toothpaste. The term that describes this proactive approach to dental care is _____.

Preventive support counseling

Risk assessment

Probability counseling

Anticipatory guidance

6. In mechanical exposure of pulp (size 0.3mm) what is to be done

IPC

Pulpectomy

RCT

DPC

7. Which of the following is/are true about the actions of a formocresol pulpotomy?

Formocresol pulpotomies contain four zones of fixation

Formocresol pulpotomies donot produce dentinal bridging

Formocresol pulpotomies are initiated when the inflammation has spread into the tissues within the root canal system

All of the above are true

8. A child starts to hold his head stable at what age:

11-12 months

18-20 months

3-4 months

6-7 months

9. The minimum number of lobes from which any tooth may develop is:

Two

Three

Four

Five

10. Dental age refers to the

Age at which a given tooth erupts

Time period of an eruption potential

State of dental maturation

Number of years elapsed since a given tooth erupted

11. 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

Reappoint for exam and radiographs in 6 weeks

Calcium hydroxide pulpotomy

Formocresol apexification technique

12. Your patient is 8 years old. Tooth #8 was avulsed and you replanted it within 30 minutes. What is the best splint to use?

Nonrigid fixation for 7 days

Nonrigid fixation for 2 months

Rigid fixation for 2 months

Rigid fixation for 7 days

13. The pulp horn which is most likely to be exposed during cavity preparation on a primary molar is the

Mesiobuccal horn of the primary first molar

Distobuccal horn of the primary 2nd molar

Distobuccal horn of the primary first molar

Mesiolingual horn bf the primary 2nd molar

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

The alveolar crest is flatter

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

15. A child presents to your office after a fall from a tree, during which his primary maxillary central incisor was avulsed. The mother has brought the tooth in a cup of milk and says the fall occurred 2 hours ago. What is the best treatment for this patient?

Replant the tooth, stabilize the tooth for 1 to 2 weeks at which time a pulpotomy should be performed

Replant tooth, stabilize for 1 to 2 weeks, and begin apexification if pulp necrosis is evident

Replant the tooth, stabilize for 1 to 2 weeks, and then perform a pulpectomy

Take a radiograph, irrigate socket, do not replant tooth

16. In a stainless steel crown on a deciduous molar with overhanging margins, gingival pain and inflammation occurs due to:

Plaque retention

Excess cement

Engaging undercut

Crown margins causing irritation

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

Primary mandibular first molar

Primary maxillary lateral incisor

Primary maxillary canine

Primary mandibular canine

18. Congenitally missing teeth are the result of failure in which stage of development?

Initiation

Morphodifferentiation

Apposition

Calcification

19. The definition of primate space is:

The space distal to the mandibular primary canines and distal to the maxillary primary canines

The space mesial to the maxillary primary canines and distal to the mandibular primary canines

The space mesial to the mandibular primary canines and distal to the maxillary primary canines

The space mesial to the maxillary primary canines only

20. Localized aggressive periodontitis in the primary dentition is seen most commonly in the primary molar area. It is most common in Asian children.

The first statement is false and the second statement is false.

The first statement is true and the second statement is true.

The first statement is true and the second statement is false.

The first statement is false and the second statement is true.

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