Influence of size and taper of basic root canal preparation on root canal cleanliness: a scanning electron microscopy study.
Gianluca PlotinoTaha ÖzyürekNicola Maria GrandeMustafa GundogarPublished in: International endodontic journal (2018)
All basic root canal preparation techniques were associated with less debris and smear layer on the canal walls in the middle and coronal thirds, without differences among them. Even though debris and smear layer were always present in the apical third, an apical size of 25 resulted in significantly cleaner canals walls compared to a size 20.