Effect of apically separated rotary instruments on bacterial leakage of obturated root canals using resilon.
The purpose of this study was to determine the effect of a separated rotary instrument on the time required for bacterial penetration of obturated root canals using Resilon. Eighty-four extracted human maxillary premolars with single canals were used in this study. Group 1 consisted of teeth obturated with gutta-percha and AH-26 sealer (n=15); Group 2 consisted of teeth obturated similarly to Group 1 but without a separated file; Group 3 consisted of teeth obturated with Resilon and Epiphany sealer (n=15); and Group 4 consisted of teeth obturated similarly to Group 3 but without a separated file. Six teeth were used as positive controls, and six teeth were used as negative controls for each experimental group. Negative controls were obturated similarly to experimental teeth. On the other hand, positive controls were obturated with gutta-percha or Resilon without sealer. A suspension of Enterococcus faecalis was placed in the access chamber daily, and penetration was determined when turbidity was noted in the culture broth during a three-month period. No significant difference between experimental groups was observed. However, differences between experimental groups and control groups were statistically significant.
Zahed
Z
Mohammadi
Rasoul Yousefi
RY
Mashouf
Hamid
H
Jafarzadeh
Ali
A
Heydari
Sousan
S
Shalavi
D001729:Bismuth / Q000627:therapeutic use; D001840:Dental Bonding; D003763:Dental Leakage / Q000382:microbiology*; D003786:Dental Pulp Cavity / Q000382:microbiology; D013293:Enterococcus faecalis / Q000502:physiology; D004853:Epoxy Resins / Q000627:therapeutic use; D004868:Equipment Failure; D005547:Foreign Bodies / Q000150:complications* / Q000382:microbiology; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D008422:Materials Testing; D012387:Root Canal Filling Materials / Q000627:therapeutic use*; D012389:Root Canal Obturation / Q000379:methods; D018915:Root Canal Preparation / Q000295:instrumentation*; D012834:Silver / Q000627:therapeutic use; D013696:Temperature; D013997:Time Factors; D014025:Titanium / Q000627:therapeutic use
D004853:Epoxy Resins; D012387:Root Canal Filling Materials; C486893:epiphany sealer; C486892:resilon sealer; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D014025:Titanium; D001729:Bismuth