Ultrastructural evaluation of the apical seal in roots filled with a polycaprolactone-based root canal filling material.
This in vitro study compared the ultrastructural quality of the apical seal achieved with Resilon/Epiphany and gutta-percha/AH Plus. Single-rooted extracted human teeth were prepared using a crown-down technique, debrided with NaOCl and EDTA, and obturated with either Resilon/Epiphany or gutta-percha/AH Plus. They were examined for gaps along canal walls using SEM, and for apical leakage using a transmission electron microscopy (TEM). SEM revealed both gap-free regions, and gap-containing regions in canals filled with both materials. TEM revealed the presence of silver deposits along the sealer-hybrid layer interface in Resilon/Epiphany, and between the sealer and gutta-percha in the controls. It is concluded that a complete hermetic apical seal cannot be achieved with either root filling materials.
Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
Franklin R
FR
Tay
Robert J
RJ
Loushine
R Norman
RN
Weller
W Frank
WF
Kimbrough
David H
DH
Pashley
Yiu-Fai
YF
Mak
Ching-Ngor Shirley
CN
Lai
Rakesh
R
Raina
M Chad
MC
Williams
D003763:Dental Leakage / Q000517:prevention & control*; D004853:Epoxy Resins / Q000737:chemistry*; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D011091:Polyesters / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000379:methods; D019227:Tooth Apex / Q000187:drug effects
D004853:Epoxy Resins; D011091:Polyesters; D012387:Root Canal Filling Materials; C486893:epiphany sealer; C534916:epoxy resin-based root canal sealer; C486892:resilon sealer; C016240:polycaprolactone; D006171:Gutta-Percha