LP3 Sealants Flashcards
who developed sealants and in what year?
buoncore in 1967
what is a sealant?
an organic polymer resin that flows into the pit/fissure and bonds to the enamel surface
a sealant is a mechanical _____
retention
what does a sealant reduce?
reduces the incidence of occlusal caries
what percentage of caries are on the occlusal surface?
85-90%
what are some purposes of sealants?
- provide a physical barrier to seal off pit or fissure
- prevent oral bacteria from collecting in the pit/fissure which creates the acid environment needed to begin the caries process
- fill pit/fissure as deep as possible with the protective material
what are some characteristics of the “ideal” sealant
- achieves prolong bonding to enamel
- bicompatible with oral tissues
- simple to apply
- free-flowing, low viscosity material capable of entering narrow fissures
- low soluability in the oral environment
what are the 3 ways to classify sealants?
- Classification of method: how its placed
- Classification of filter content: what it is made of
- Classification by color: no difference in material, used for identification/location of sealant
what are the two possible methods of how a sealant is placed?
- autopolymerized (self-cured) base and catalyst
2. photopolymerized (light-cured) one material
advantage and disadvantage of autopolymerized sealant
adv: no special equipment is needed
dis: short working time
advantage and disadvantage of photopolymerized sealant
adv: longer working time
dis: equipment is costly
3 examples of filter content
- filled
- unfilled
- fluoride-releasing
3 examples of color
- clear
- tinted
- opaque
what are some indications for sealant placement
- any patients with risk of dental caries
- xerostomia
- patients with ortho
- incipient caries
- newly erupted teeth
- teeth with occlusal contour
- caries (past/present)
contradictions of sealant placement
- radiographic evidence of interproximal caries
- few pit/fissures; smooth occlusal surface
- low caries risk
T/F: you can place a sealant without prescription from DDS
False; must have prescription