fissure sealants

Question 1

what are the functions of fissure sealants?

Answer 1

eradicates fissures
aids cleaning
prevents caries

Question 2

what makes an effective fissure seal?

Answer 2

smooth
occlusal harmony
no air bubbles
nu under cuts or over extensions

Question 3

what % is acid etch?

Answer 3

30-50 % phosphoric acid

Question 4

what does etch do?

Answer 4

dissolves approx. 8 micrometers of enamel

creates porosities 50 micrometers deep

Question 5

what is type 1 etching pattern?

Answer 5

prism core removed
peripheral material left
most common

Question 6

what is type 2 etching pattern?

Answer 6

prism core remains

peripheral regions removed

Question 7

what is type 3 etching pattern?

Answer 7

haphazard effect- not relating to prism

Question 8

what does etched enamel look like?

Answer 8

chalky appearance

Question 9

what different types of fissure sealants are available?

Answer 9

self polymerised- chemical cure
ultra violet polymerised
white light polymerised

Question 10

what is filled fissure sealants filled with?

Answer 10

lithium alumina silicate

increased resistance to abrasion

Question 11

what accounts for high caries risk?

Answer 11

high sugar intake
evidence of caries in other teeth
carious primary dentition