Pedodontics #4 – Unidontia

1. If the fluoride level in the drinking water is greater than 0.6 ppm at any age, no supplemental systemic fluoride is indicated. If the patient is less than 12 months old, no supplemental systemic fluoride is indicated, whatever the water fluoride level.

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

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

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

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

2. During eruption of primary teeth, alveolar bone is

Resorbed only

Deposited only

Resorbed and deposited Intermittently

Neither resorbed nor deposited, but is static

3. Your patient is 4 years old. The maxillary right primary central incisor was traumatically avulsed 60 minutes ago. What is the treatment of choice?

None of the above

Replant, splint, formocresol pulpotomy

Replant, splint, primary endo

Replant, no splint, primary endo

4. Tooth brushing should be taught to children’s at the age of

5-6 yr

2-3 yr

>10 yr

1-2yr

5. An advantage of the rubber dam is that it

Muffles any screams the child may emit

Aids in the management of child behaviour

Enables the operator to salvage silver scraps

Reduces the necessity for a carefully carved cervical margin

6. All of the following statements are true except:

The primary teeth are darker in color than the permanent teeth

In general, the crowns of primary teeth are more bulbous and constricted than the permanent counterpart

The crown surfaces of all primary teeth are much smoother than the permanent teeth

The pulp cavities are proportionately larger in the primary teeth

7. Diluted resin is used in

Type C PRR

All of the above

Type B PRR

Type A PRR

8. Primary function of MTA is

Root canal restorative material in deciduous teeth

None

Apexification in an immature traumatised pulpless teeth

Restoration in deciduous anterior teeth

9. Which treatment is the proper one for a class ll fracture of a permanent tooth with an immature apex?

Pulpotomy

Pulpectomy

Observe

Apply calcium hydroxide to exposed dentin and restore tooth with a permanent restoration

10. Fluoride varnish (5% sodium fluoride in a resin vehicle) is the preferred choice of pediatric dentistry for in-office fluoride delivery for which of the following reasons?

Ease of delivery

Measured maximum dose/exposure to fluoride ion

Stays on enamel surfaces longer than any other fluoride product/longer contact time

All of the above

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

Cervical constriction of crown favours its retention

Smaller diameter of crown favours its retention

Occluso cervical height favours its retention

Mesiobuccal bulge favours its retention

12. Space for eruption of permanent mandibular molars is created by

Resorption at the posterior border of ramus

Apposition of the alveolar process

Apposition at the anterior border of ramus

Resorption at the anterior border of the ramus

13. 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?

Application of formocresol is a clinically timeconsuming procedure.

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

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.

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

Calcification

Morphodifferentiation

Initiation

Apposition

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

Bisguanide

Antibiotics

Organic compound

Quaternary ammonium compounds

16. The name early childhood caries (ECC) was given by

Horowitz

Davies

Kroll

Moss

17. 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 a Tell-Show-Do technique of behavior management

Refer to a pediatric dentist

Use restraints after obtaining informed consent

Use conscious sedation

18. Maximum amount of fluoride in the tooth structure is in

Pulp

Cementum

Enamel

Dentin

19. 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 conventional root canal treatment with gutta-percha

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

Place calcium hydroxide on the pinpoint exposure

Initiate a calcium hydroxide pulpectomy

20. At birth child shows marked convex profile. This is due to

Protruted maxilla

Large size maxilla

Small sized mandible

Retruded mandible

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