title: Sealing ability of various restorative materials as coronal barriers between endodontic appointments.
abstract: OBJECTIVE
  To evaluate and compare the microleakage of various restorative materials used as coronal barriers between endodontic appointments.
  
  
  METHODS
  Eighty extracted human permanent posterior teeth were prepared for standardized access cavities with dimensions of 4 × 4 × 4 mm. The teeth were then randomly divided into four groups; Kalzinol, Caviton, GC Fuji IX and GC Fuji II LC. After incubation, the samples were immersed in 2% methylene blue for 7 days. The depth of penetration was measured using a digital macroscope after longitudinal sectioning of each tooth. Kruskal-Wallis (p < 0.05) and multiple Mann-Whitney test with Bonferroni correction (p < 0.008) were used for data analysis.
  
  
  RESULTS
  The degree of microleakage varied at the material/ tooth interface among the test materials, and the difference was statistically significant (p < 0.05). GC Fuji II LC group showed the least median microleakage value (0.8105 ± 0.305), followed by Caviton (1.1885 ± 0.396), GC Fuji IX (3.3985 ± 0.305) and Kalzinol (4.161 ± 0.853).
  
  
  CONCLUSIONS
  Within the limitations of this study, GC Fuji II LC exhibited the best marginal seal, and has the potential to be used as a suitable coronal barrier between endodontic appointments.
  
  
  CONCLUSIONS
  Given the prime importance that dental practitioners should thoroughly restore any tooth with a suitable coronal barrier between endodontic appointments, this study shows that Fuji II LC has the ability to maintain a hermetic seal for 7 days.
authors.affiliation: Department of General Dentistry, Bintulu Dental Clinic Lebuhraya Abang Galau, Bintulu, Malaysia.
authors.forename: Zalilah
authors.initials: Z
authors.lastname: Tapsir
authors.forename: Hany Mohamed
authors.initials: HM
authors.lastname: Aly Ahmed
authors.forename: Norhayati
authors.initials: N
authors.lastname: Luddin
authors.forename: Adam
authors.initials: A
authors.lastname: Husein
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D002133:Calcium Sulfate / Q000737:chemistry; D004396:Coloring Agents; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D003763:Dental Leakage / Q000145:classification*; D003786:Dental Pulp Cavity / Q000648:ultrastructure; D003804:Dentin / Q000648:ultrastructure; D004338:Drug Combinations; D005054:Eugenol / Q000737:chemistry; D005557:Formaldehyde / Q000737:chemistry; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008751:Methylene Blue; D019279:Resin Cements / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry*; D018915:Root Canal Preparation / Q000379:methods; D012390:Root Canal Therapy / Q000379:methods*; D016369:Smear Layer; D013499:Surface Properties; D013997:Time Factors; D014753:Vinyl Compounds / Q000737:chemistry; D015034:Zinc Oxide / Q000737:chemistry
chemical_list: D000180:Acrylic Resins; D004396:Coloring Agents; D003738:Dental Cements; D004338:Drug Combinations; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D019279:Resin Cements; D012117:Resins, Synthetic; D012387:Root Canal Filling Materials; D014753:Vinyl Compounds; C086076:calcium sulfate, zinc oxide, vinyl acetate, zinc phosphate root canal filling; C110713:fuji IX; D005557:Formaldehyde; D005054:Eugenol; C006903:carbopol 940; C003799:N2 Dental Cement; D015034:Zinc Oxide; D008751:Methylene Blue; D002133:Calcium Sulfate