title: Apical microleakage evaluation of system B compared with cold lateral technique: In vitro study.
abstract: The aim of this study was to evaluate in vitro the apical sealing ability of cold lateral and system B root filling techniques using dye penetration. Eighty-six extracted single-rooted human teeth were prepared and randomly divided into two experimental groups to be obturated by cold lateral condensation (n = 33) and system B (n = 33). The remaining 20 teeth served as positive and negative controls. The roots were embedded for 72 h in methylene blue dye solution and sectioned transversely for dye penetration evaluation using stereomicroscope. The results of this study showed that cold lateral condensation leaked significantly more (P < 0.001) than system B technique.
authors.affiliation: Conservative Department, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, Malaysia. ghorafi44@yahoo.com
authors.forename: Manal
authors.initials: M
authors.lastname: Farea
authors.forename: Sam'an
authors.initials: S
authors.lastname: Masudi
authors.forename: Wan Zaripah
authors.initials: WZ
authors.lastname: Wan Bakar
mesh_terms: D001729:Bismuth / Q000737:chemistry / Q000627:therapeutic use; D004396:Coloring Agents; D003722:Dental Alloys; D001840:Dental Bonding; D003763:Dental Leakage / Q000145:classification*; D003793:Dental Restoration, Permanent; D004492:Edetic Acid / Q000627:therapeutic use; D004853:Epoxy Resins / Q000737:chemistry / Q000627:therapeutic use; D005899:Glass Ionomer Cements / Q000737:chemistry; D006171:Gutta-Percha / Q000737:chemistry / Q000627:therapeutic use; D006358:Hot Temperature; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D008751:Methylene Blue; D009532:Nickel; D012387:Root Canal Filling Materials / Q000737:chemistry / Q000627:therapeutic use; D012388:Root Canal Irrigants / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods*; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D012834:Silver / Q000737:chemistry / Q000627:therapeutic use; D016369:Smear Layer; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D013696:Temperature; D013997:Time Factors; D014025:Titanium / Q000737:chemistry / Q000627:therapeutic use; D019227:Tooth Apex / Q000473:pathology*
chemical_list: D004396:Coloring Agents; D003722:Dental Alloys; D004853:Epoxy Resins; D005899:Glass Ionomer Cements; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C040654:titanium nickelide; D012834:Silver; C028044:epoxy resin AH-26; D009532:Nickel; D006171:Gutta-Percha; D004492:Edetic Acid; D014025:Titanium; D012973:Sodium Hypochlorite; D008751:Methylene Blue; D001729:Bismuth