fissure sealants

Question 1

indications for FS

Answer 1

1) patient selection
- based on caries risk
- special needs eg medically compromised

2) tooth selection
- sound teeth with deep fissures that are difficult to clean
- if got occlusal caries in one permanent 6 then seal fissures of other 6s, assess need to seal 7s when they erupt sufficiently
- dental anomalies like dens e, dens inv tc

Question 2

what are some contraindications of FS

Answer 2

• poor moisture control eg partially erupted nia then dont do
• caries into dentine, must do PRR liao
• uncooprative px

Question 3

success of FS?

Answer 3

ADA 2008:

decreases caries incidence by 86% at 1 year to 79% at 2 years and 59% at 4 years

• effectiveness decreases because fs may partuially dislodge