Sealants Flashcards
What is best used to polish the pits and fissures?
Prophet brush
What instrument is used to help assure complete sealant material penetration in the pits and fissures?
Explorer
What instrument is used to inspect for sealant voids and etched surfaces, remove air bubbles and check the sealants retention?
Explorer
What are the positives of sealant placement?
Prevents cavities from forming
Method of applying sealant material on the pits and fissures:
Brushing the material over the grooves
Who can apply pit and fissure sealants?
RDA under direct supervision
RDH
RDAEF
Prior to pit and fissure sealant certification what must dental assistants have?
75% or better on written exam
4 patients w/ 75% or better on each
All legal paperwork signed
Sealants are more frequently placed on which teeth?
Molars and premolars
What are the enchant characteristics and indications?
Chalky; Matte film; Cloudy
Preps surface for bonding
Disinfects and dries tooth surface
Characteristics of properly placed sealants:
Explorer glides over grooves, doesn’t stick
Smooth, cloudy look
No bubbles
No overfill
When are sealants not to be placed?
When the patient has preexisting cavities or fillings
How soon does sealant failure occur?
3-6 months
Sealant adhesion depends primarily on what type of bonding mechanism?
Self cure
Light cure
What is included in the concept of bonding?
Etching
Sealant placement
Proper wetting of pit and fissures to apply properly
If the etch material comes in contact with the skin or face what must be done immediately?
Flush area w/ large amounts of water
What is correct to do if anyone gets prima dry in their eyes?
Rinse eyes immediately
What is the best isolation method when applying sealants?
Dental dam
When sealants first were used what was the main problem causing failure?
Moisture/ Saliva contamination
What type of pumice is used to polish the tooth prior to sealant placement?
Pumice paste (nada)
What is the correct term for the very beginning of caries?
Incipient caries
What does decalcified enamel look like?
White spots
What info is charted on the patients record when sealants are placed?
Which teeth were sealed
Will a limited variable number of bacteria live under a properly placed sealant?
No
Can incipient caries revert from active to inactive?
Yes
How are sealants stored when not in use?
Do not expose to air or light Recap material Keep away from Eugenol products Room temp Shelf life 18-36 months Some stored in refrigerator
Where is the Parotid gland and by which teeth?
Front of ear area
Next to teeth 2,3,14,15
What is the strongest substance in the body and where is it found?
Enamel
On tooth surface
A bubble void is found in the sealant with no saliva contamination what do you do?
Reapply sealant
Recure
Is dental adhesion by mechanical bonding or chemical bonding?
Mechanical (light cure)
A child demonstrating moderate risk factors will have how many cavities in the past year?
1-2 cavities
How is excess sealant material removed from high spots interfering with occlusion?
Reduce occ with white stone
How close is the curing light held from the sealant and tooth?
1-2 mm
What is the energy output of the curing light to successfully cure the sealant material?
400-600 nanometers
What is photopolymerization? What is self cure?
Light cure=polymerization
Self cure= chemicals cure one another
What is the curing time for sealants when using a high intensity energy curing light?
10 sec
What does interprasmatic substance do to the enamel rods?
Holds enamel rods together
What is the process called when the saliva calcium and phosphates are absorbed by the enamel?
Recalcification
What is the curing time for sealants when using a standard curing light?
20 sec
What is the initial recommended etching time?
15 sec
What is the re etching time?
10 sec
What percentage of orthophosphoric acid is in most etching materials used?
50%
After rinsing the enchant off for how long is the tooth dried?
20 sec
When re etching due to moisture control what 2 steps are done?
Wash and dry
Re isolate with dry cotton rolls
At what step is prima dry applied and for how long?
After etching
What is the purpose of wiping the just cured sealant with a wet cotton roll?
Remove the inhibition layer
What can be used to remove moisture from the tooth?
Cotton roll
Gauze
Air and water syringe
Hve
What is the benefit of fluoride containing sealant material?
Remineralize incipient dental caries
Which disinfectant is contraindicated and may erode the curing light tip?
Alcohol
What are the small faults that occurs form the noncoaloenscense of enamel formation on the occ surface?
Pits
Now many mm of the surrounding area of deep pit and fissures on the bucc or ling surfaces should the etchant cover?
2 mm
What are the linear faults that occur from noncoaloenscense of enamel formation on the occ surface?
Fissures
The occ surface and the _________ surfaces are inspected for excess material placement.
Interprovincial
Sealants Procedure:
Coronal polish sealing surfaces Wash and dry remove all pumice Isolate w/ cotton rolls; dry angles Etch 15 sec Wash 20 sec Dry 20 sec HVE Prima dry 5 sec Dry again Apply sealant material Cure 20 sec
Benefits of Sealants:
Eliminates bacteria Fills grooves with acid resistant resin Eliminates cariogenic bacteria Arrests incipient decade Cost effective of prevention over restoration cost
What is used to check the occlusion after the sealants have been placed?
Articulating paper
