F.S and PRR

Question 1

Pit and Fissure Sealants

Answer 1

Pit and fissure sealants are low-viscosity fluid resin composite intended to seal pits and fissures to prevent the development of dental caries.

Question 2

GIC F.S

Answer 2

high acid-base bonding
less shrinkage
fluoride release

Question 3

composite resin F.S

Answer 3

higher tensile strength
low susceptibility to desiccation

Question 4

Resin- Based Sealant Material
-The first generation -

Answer 4

polymerized by the action of ultraviolet rays

Question 5

Resin- Based Sealant Material
-The second generation -

Answer 5

chemically-cured

Question 6

Resin- Based Sealant Material
-The third generation -

Answer 6

comprises visible light-polymerizing resin-based sealants. In this type of sealant, the visible light activates photo-initiators that are present in the sealant material and are sensitive to visible light in the wavelength region of around
470 nm (blue region).

Question 7

Resin- Based Sealant Material
-The fourth generation -

Answer 7

fluoride-releasing

Question 8

Indications of P.S

Answer 8

• Sealants are indicated, regardless of the patient’s age.
• Patients with high caries risk.
• Patients with deep pits and fissures.
• Stained occlusal pits and fissures.
• Presence of incipient enamel caries in pits and fissures (non-
  cavitated).

Question 9

contraindications of P.S

Answer 9

• Self cleansing pits and fissures.
• Compromised isolation
• Cavitated carious lesions.

Question 10

Preventive Resin Restoration (PRR)

Answer 10

If a small caries lesion is detected, and the adjacent grooves and pits, although sound at the present time, are at risk for caries in the future, a preventive resin restoration of the active cavitated lesion

Question 11

PRR

Answer 11

-minimal removal of the tooth structure
-may be combined with the use of flowable composite or sealant to seal radiating noncarious fissures or pits that are at high risk for subsequent caries activity.