3. A thin plastic coating placed in the pit and fissures
of the teeth to act as
a physical barrier
to decay.
As a way to prevent caries and protect the
tooth .
strategy based on assessment of caries risk
include application of fluoride varnish, education, nutritional
counselling and regular clinical review
4. The molar teeth have many fissures and pits, which
can be very difficult to keep clean.
These are the sites most susceptible to developing
decay
5. resin-based sealants :
o May or may not contain filler particles or fluoride.
o The setting reaction can be automatic(auto-
polymerised) or light activated (light-
polymerised). .
o Low viscosity resin-based RM (flowable
composite) have also been used as fissure sealant.
o retention rates 2%–80% better than the GIC
sealants.
6. glass ionomer sealants :
o can adhere directly to tooth substance.
o release fluoride over time.
o Less sensitive to moisture contamination than
resin-based materials.
o Retention is a major problem with GIC
sealants, but if this concern can be resolved, there
maybe advantages to the GIC sealants through the
release of fluoride.
7.
8.
9. Sealants are able to:
o prevent pit and fissure caries initiation .
o arrest caries progression by providing a physical
barrier that inhibits micro-organisms and food
particles from collecting in pits and fissures.
the effectiveness of sealants decreased over time and
was higher in populations exposed to fluoridated
water.
10. o type of sealant material
o placement technique
o retention of sealant
o cooperation of patient
o follow-up time
o the content of fluoride in the drinking water
o dietary, oral hygiene
o the socioeconomic factors
11.
12. all permanent molar teeth without cavitation
(i.e., free of caries or incipient caries).
early (non- cavitated) carious lesions in children,
adolescents and young adults to reduce the
percentage of lesions that progress (Griffin et al. 2008).
teeth that have deep and narrow pit and fissure
morphology (the caries risk is increased because of
difficulties to clean the tooth).
teeth with stained grooves
13. on the primary molars of children who are
susceptible to caries (i.e., high caries risk).
Sealants should be placed on first and second
permanent molar teeth within 4 years after
eruption.
14. Sealants should not be placed on partially
erupted (i.e., once there is gingival tissue on
the crown)
Teeth with cavitation or caries of the dentin
15.
16. the most important teeth for sealant
application are the first and second
permanent molar teeth.
Other teeth, such as premolars, third molars or the
palatal surfaces of incisor teeth, may be considered
for sealant application, based on:
o caries risk status.
o and assessment of the tooth surface.
17. 1. Child with occlusal caries on one of the first
permanent molar.
Seal the remaining sound first permanent molars.
2. Occlusal caries affecting one or more first
permanent molars
Need to seal the second permanent molar as soon as
they have erupted sufficiently.
3. Tooth should be sealed within 2 years of eruption.
18. for some children, such as those with medical or
other conditions where the development of
caries or its treatment could put the child’s general
health at risk, sealing primary molar teeth should
be considered as part of a comprehensive caries-
preventive program .
19.
20. Teeth should be clean, dry and well-illuminated for
visual assessment.
A probe should not be used to explore pits or
fissures
((Forceful use of a probe can damage tooth surfaces))
Radiographs should not be taken for the sole
purpose of placing sealants.
Other diagnostic technologies are not necessary for
the sole purpose of placing sealants.
21.
22. The results indicated that teeth with fully or
partially lost sealant are not at higher risk of
developing caries than teeth that were never seal
in order to reduce the possibility of formerly
sealed teeth returning to their original risk status,
sealants need to be maintained.
answer be yes just if :
This is particularly
true for children who have sealants applied to
teeth with demineralised enamel or suspicious
lesions.
23.
24. as soon as the tooth is sufficiently
erupted to be isolated.
Time of eruption:
first permanent molars :
o 6.0–6.3 years for girls
o 6.3–6.5 years for boys
second permanent molars:
o 11.5–12.3 years for girls
o 11.8–12.4 for boys
25.
26. patients are not at risk of exposure to BPA from
the use of dental sealants, but recommended
precautionary measures to reduce potential exposure
to BPA from dental sealants which include:
rinsing the surface of the cured material for 30
seconds with water while using effective suction;
getting the patient to rinse for 30 seconds and
spit out after the procedure; removing the
surfaceresidual monomer layer with pumice on a
cotton pellet or a prophy cup.
27.
28. the placement of sealants should be on
permanent molar teeth as both cost-effective
and efficacious in the prevention of caries.
the supporting evidence of the placement of
sealants on primary molars is more limited.
29.
30.
31.
32. the recall interval for high caries risk children
should not exceed 12 months.
if isolation has been difficult to achieve or the
sealant has been applied over a suspicious
lesion, recall within 6 months.
33.
34. In a randomized trial (Bravo et al. 2005), after nine
years, caries reduction was:
65.4% (SE=8.5%) for sealants
27.3% (SE=10.2%) for varnish
Furthermore, the varnish programe was not
effective during the discontinuation period.
35.
36. by isolation of the teeth.
application of bonding agents ((use of
flowable resin, following phosphoric acid
gels))
37.
38. it is very important to adequately isolate the teeth
because the salivary contamination is the major
cause of loss of sealants in the first year.
Just remember
Isolate the tooth to be sealed with either a
dental dam or cotton wool rolls/isolation
shields combined with effective aspiration
39.
40. (1) age
(2) dmft
(3) no fluoride
(4) operator
47. Sealant retention should be checked with a probe
after polymerisation to ensure that all fissures are
completely sealed.
If any material is dislodged, the sealant should be
reapplied after re-cleaning (if necessary.
Editor's Notes
Resin-based sealants are basedon acrylic (methacrylate), may or may not contain filler particles or fluoride, and the setting reactioncan be automatic (auto-polymerised) or light activated (light-polymerised). Low-viscosity resin-basedrestorative materials (flowable composites) have also been used as fissure sealants.Glassionomer sealants have evolved from glass ionomer cements, which can adhere directly to toothsubstance.15 Glass ionomer materials release fluoride over time and have the advantage of being lesssensitive to moisture contamination than resin-based materials, making them a potential alternative toresin-based sealants when moisture control is an issue
Glassionomer sealants have evolved from glass ionomer cements, which can adhere directly to toothsubstance.15 Glass ionomer materials release fluoride over time and have the advantage of being lesssensitive to moisture contamination than resin-based materials, making them a potential alternative toresin-based sealants when moisture control is an issue
the impact of fissure sealants alone onreducing caries is likely to be less for primary teeth than for permanent teeth.
careful visual assessment of the tooth was appropriate for assessingthe need for sealants, and also that existing radiographs, if recent, should be consulted before sealantapplication. Additional caries detection tools should only be considered when there is concern thatcaries might extend into dentine.
