title: [Sealing properties of three resin-based sealers].
abstract: OBJECTIVE
  To evaluate the sealing properties of three resin- based sealers, EndoREZ, RealSEAL and RealSEAL SE.
  
  
  METHODS
  Forthy-eight extracted human anterior teeth with single root and canal were prepared using ProTaper files with crown-down technique to F3. The teeth were filled with three sealer respectively with hot gutta- percha vertical condensation technique simulating the clinical situation. Leakage quantity was detected using computerized fluid filtration meter with 10 samples in each group. The cross section morphology of apical parts of roots of 5 mm was observed with scanning electron microscope and transmission electron microscope in 3 samples of each group, respectively.
  
  
  RESULTS
  The leakage quantity of EndoREZ, RealSEAL and RealSEAL SE were (2.61±0.60), (1.43±0.11) and (1.76±0.18) µl/min, respectively. The gaps between the the sealer and the canal wall were increased in in order of RealSEAL, RealSEAL SE and EndoREZ. No obvious demineralized dentin under EndoREZ and the smear layer was not completed removed. The partly demineralized dentin was observed under RealSEAL and the smear layer was totally removed. The partly demineralized dentin was seen under RealSEAL SE and the majority of smear layer was removed.
  
  
  CONCLUSIONS
  Among the three resin- based sealers, RealSEAL has the best sealing properties, followed by RealSEAL SE and EndoREZ.
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
authors.forename: Sui
authors.initials: S
authors.lastname: Mai
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
authors.forename: Shiyu
authors.initials: S
authors.lastname: Wu
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
authors.forename: Lisha
authors.initials: L
authors.lastname: Gu
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
authors.forename: Yipin
authors.initials: Y
authors.lastname: Qi
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
authors.forename: Qiurong
authors.initials: Q
authors.lastname: Sun
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China. Email: lingjq@mail.sysu.edu.cn.
authors.forename: Junqi
authors.initials: J
authors.lastname: Ling
mesh_terms: D003188:Composite Resins; D003763:Dental Leakage; D003804:Dentin; D004853:Epoxy Resins; D006171:Gutta-Percha; D006801:Humans; D010895:Pit and Fissure Sealants; D012387:Root Canal Filling Materials; D014070:Tooth; D014092:Tooth Root
chemical_list: D003188:Composite Resins; C481259:EndoRez; D004853:Epoxy Resins; D010895:Pit and Fissure Sealants; D012387:Root Canal Filling Materials; D006171:Gutta-Percha