Assertion: glycine's effect | /r/CreatedBy | both polishing powders
Facets:
value: on restorative materials’ surface roughness
type: OTHER
Source sentences:
text: The first null hypothesis was that there will be no differences on the effect produced by both polishing powders on restorative materials’ surface roughness.
text: Pointing that differences were found between the effects produced by the two polishing powders and the behavior of the materials after both treatments, so both hypothesis must be rejected.