Search on: SMEAR LAYER 
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Descriptor English:   Smear Layer 
Descriptor Spanish:   Capa de Barro Dentinario 
Descriptor Portuguese:   Camada de Esfregaço 
Synonyms English:   Layer, Smear  
Tree Number:   C07.793.208.688
Definition English:   Adherent debris produced when cutting the enamel or dentin in cavity preparation. It is about 1 micron thick and its composition reflects the underlying dentin, although different quantities and qualities of smear layer can be produced by the various instrumentation techniques. Its function is presumed to be protective, as it lowers dentin permeability. However, it masks the underlying dentin and interferes with attempts to bond dental material to the dentin. 
Indexing Annotation English:   note category: in dental cavity preparation
History Note English:   92 
Allowable Qualifiers English:  
BL blood CF cerebrospinal fluid
CI chemically induced CH chemistry
CL classification CO complications
CN congenital DI diagnosis
DG diagnostic imaging DH diet therapy
DT drug therapy EC economics
EM embryology EN enzymology
EP epidemiology EH ethnology
ET etiology GE genetics
HI history IM immunology
ME metabolism MI microbiology
MO mortality NU nursing
PS parasitology PA pathology
PP physiopathology PC prevention & control
PX psychology RT radiotherapy
RH rehabilitation SU surgery
TH therapy UL ultrastructure
UR urine VE veterinary
VI virology  
Record Number:   29816 
Unique Identifier:   D016369 

Occurrence in VHL:
 
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BBO    
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