Sealants

Question 1

Sealant Composition

Answer 1

Resin/Polymer mixture + Glass filler

Question 2

Glass Filler characteristics

Answer 2

more resistant, radiopaque (visibility), releases fluoride

Question 3

Indications for Sealants

Answer 3

children, newly erupted teeth, mod-high caries risk, incipient caries, deep p+f *adults insurance dictates

Question 4

Groove

Answer 4

smooth based depression on occlusal surface. easily cleaned

Question 5

Pit and Fissure

Answer 5

enamel fault that is a result of non-coalescence of enamel during formation -
Shapes: U, V, I

Question 6

Contraindications

Answer 6

interproximal or occlusal caries, well coalesced p+f, tissue flap, allergy to methacrylate, isolation cannot be achieved

Question 7

1st Generation Sealants

Answer 7

light polymerized - ultraviolet light *not manufactured

Question 8

2nd Generation Sealants

Answer 8

autopolymerization = self cure

*little control over setting time

Question 9

3rd Generation Sealants

Answer 9

photopolymerization = light cure

*control over working time

Question 10

Filled Sealant content

Answer 10

resistance to attrition/abrasion, fluoride release, syringe delivery, low viscosity

Question 11

White Pigment added =

Answer 11

titanium oxide -

accurate placement, bubbles/voids visible, visualization at recare

Question 12

Air Polisher contraindications

Answer 12

composites, porcelain, cementum/dentin OR

respiratory complications, infectious disease, renal disease, diuretics/steroid use

Question 13

Air Polisher technique

Answer 13

3-4mm from tooth, sweeping motion, 60º anterior, 80º posterior, 90º occlusal

Question 14

Etchant components

Answer 14

37-50% orthophosphoric or phosphoric acid. Gel (not liquid).

Question 15

Etchant effects

Answer 15

cleans, removes organic material, cleans micropores, improves enamel wettability, increases surface area, forms space between enamel rods.

Question 16

Etch time

Answer 16

20 sec (ultraseal)