title: Evaluation of instrumentation systems in reducing E. faecalis from root canals: TF adaptive and ProTaper next versus single file systems.
abstract: OBJECTIVE
  To compare the effect of the TF Adaptive, ProTaper Next, OneShape, WaveOne, Reciproc, (SAF) on the reduction of E. faecalis in experimentally infected root canals.
  
  
  METHODS
  70 human mandibular incisor teeth with straight roots and single root canals were selected for this experiment and the root canals of the selected teeth were infected with E. faecalis. After contamination, all the root canals were randomly divided into 7 groups: control, ProTaper Next, TF Adaptive, SAF, WaveOne, Reciproc, and OneShape. After the irrigation procedures, samples were taken from root canals with paper points and incubated in blood agar plates. The colonies grown on the blood agar were counted and interpreted as colony forming units per milliliter.
  
  
  RESULTS
  Analysis of results showed that all instrumentation systems were more effective in reducing the number of bacteria than the control (P<.001). The ProTaper Next, TF Adaptive, WaveOne, Reciproc, and OneShape systems were significantly more effective than the SAF system in reducing E. faecalis within the root canals (P<.001).
  
  
  CONCLUSIONS
  All instrumentation systems used in this study provided a significant reduction in bacterial populations.
authors: 1 Department of Endodontics, Faculty of Dentistry, Ataturk University, Erzurum - Turkey.
authors: Ertuğrul
authors: E
authors: Karataş
authors: Esra
authors: E
authors: Gültekin
authors: Hakan
authors: H
authors: Arslan
authors: Damla Özsu
authors: DÖ
authors: Kirici
authors: Meltem
authors: M
authors: Alsancak
authors: Meltem Çolak
authors: MÇ
authors: Topçu
mesh_terms: D003762:Dental Instruments; D003786:Dental Pulp Cavity / Q000382:microbiology*; D004203:Disinfection / Q000295:instrumentation*; D013293:Enterococcus faecalis; D006801:Humans; D066298:In Vitro Techniques; D011897:Random Allocation