Lecture 3

Question 1

Describe the cariostatic properties of sealants.

Answer 1

Physical obstruction of pits and grooves

Decrease viable bacterial counts in sealed occlusal fissures

Prevents new bacterial colonization

Prevents penetration of fermentable carbohydrates and production of acid with bacteria

Question 2

Sealants recalled after 15 years: ___% of surfaces were sound, ___% were carious/restored.

Group without sealants: __% were carious or restored

A pit and fissure surface (not sealed) on a permanent first molar is ___times more likely to be carious or restored after 15 years.

Answer 2

69
31

83

7.5

Question 3

True or false…
Sealants are safe/effective. Their effectiveness increase with good technique. You must follow up and reseal deficiencies. Benefits increase for high risk (deep fissures and pits, incipient caries lesions)

Answer 3

True

Question 4

True or false… you may never seal over decalcifications

Answer 4

False. You may as long as you dont see any radiographic evidence of caries under the enamel.

Question 5

Evidence based reviews have found that caries risk for sealed teeth that have lost some or all sealant (does/does not) exceed the risk for never-sealed teeth

Answer 5

Does not

Therefore, it has been recommended to provide sealants to children even if follow up cannot be ensured

Question 6

What are some considerations when sealants may not be cost effective?

Answer 6

Well-coalesced pits and fissures

Caries unlikely

Poor patient cooperation

Question 7

When are sealants contraindicated?

Answer 7

Rampant caries

Interproximal lesions are present

Decay reaches dentin

Question 8

Which are better for long term sealants.. glass ionomer or resin-based sealants?

Answer 8

Resin based

Glass ionomer are provisional sealants

Question 9

True or false… reevaluation is important for resin sealants

Answer 9

True

Question 10

What is the recommended acid concentration and etching time?

Answer 10

30-50% acid

20 second etching time

Question 11

Overall, __% of restored surfaces (with sealants) remained caries-free 9 years after treatment

Answer 11

88%

Question 12

Between __% and ___% of sealants need repair upon periodic recall

Answer 12

5%-10%

Question 13

____ teeth are more susceptible to restoration failures that ___ teeth.

Answer 13

Primary

Permanent

Question 14

What clamp should you use on primary molars?

Answer 14

8a

Question 15

What bur do you use for pedo restorations? How tall is it?

Answer 15

330 bur

1.5mm

Question 16

The isthmus of a class 1 should be ___ the width of the intercuspal width

Answer 16

1/3rd

Question 17

In primary teeth, for small surface restorations, should you use amalgam or composite?

Answer 17

Composite

Question 18

What is the prep for a primary MOD?

Answer 18

Stainless still crown

Question 19

True or false… bruxism is more common in adults than in children

Answer 19

False. Bruxism is very common in children

Question 20

In a class 3 prep for primary canines, the proximal box should be directed at an angle towards the ___

Answer 20

Gingiva

Question 21

When are stainless steel crowns indicated?

Answer 21

Primary or young permanent teeth with extensive, large or multisurface lesions

First primary molars with mesial interproximal lesions

Hyperplastic teeth

Teeth w/ hereditary anomalies (imperfecta)

Disables individual when oral hygiene is extremely poor

Abutment for space maintenance or prosthetic appliance