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355760
FISSURE SEALANTS
Description
Restorative dentistry Mind Map on FISSURE SEALANTS, created by aahughes on 13/11/2013.
No tags specified
restorative dentistry
restorative dentistry
Mind Map by
aahughes
, updated more than 1 year ago
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Created by
aahughes
almost 11 years ago
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Resource summary
FISSURE SEALANTS
Hard insoluable resin material
Used in liquid form - flowable resin
Fills pits and fissures with cutting enamel
FUNCTIONS
Eradicate fissures
Aid cleaning
Prevents caries
CLINICAL TECHNIQUE
Mechanical cleansing, isolate and dry the tooth.
Etch, rinse, isolate, dry
Apply resin, polymerise and check occlusion
EVALUATION
Smooth and check occ
No air bubbles
under/over extensions
THE ACID ETCH TECHNIQUE
30-50% PHOSPHORIC ACID
approx 8ym enamel dissolved
creates porosities 50ym deep
TYPE 1 ETCH PATTERN
Prism core removed, peripheral material left
Most common etching pattern
TYPE 2 ETCH PATTERN
Prism core remains intact
peripheral regions removed
TYPE 3 ETCH PATTERN
Haphazard effect
Not related to prism morphology
SELF POLYMERISED (SELF CURE)
2 solutions mixed
Self setting - limited working time
ULTRA VIOLET POLYMERISED
Not so common
Longer application time
may cause retinal damage
WHITE LIGHT POLYMERISED
Longer application time
No retinal damage
COLOURED FS'S
Clear - to see underneath
Tinted or Opaque - see loss of sealant
FILLED OR NON FILLED
Filled with Lithium alumina silicate
Increased resistance to abrasion
Increased wear on opposing teeth
INDICATIONS FOR USE
High caries risk, limited manual dexterity
Medically comprimised - physical probs/age
Cardiac probs, immunosuppressed
bleeding disorders, metabolic/endocrine probs
Tooth can be isolated
Deep Fissures
CONTRAINDICATIONS
Poor pt co operation
Caries present
Previously restored tooth
Should be reviewed 6/12 and take bw's if poss caries
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