title: Sealing Ability of Four Calcium Containing Cements used for Repairing Furcal Perforations in Primary Molars: An in vitro study.
abstract: The aim of this study was to compare the sealing ability of mineral trioxide aggregate (MTA), Portland cement (PC), Biodentine(TM) and Tech biosealer in repairing furcal perforations in primary molars using the fluid-filtration technique.
  
  
  
  Fifty freshly extracted maxillary second primary molars were sectioned horizontally at the furcation region to create dentin disks of 1.5 mm (+ 0.1 mm) thickness. Five disks were not perforated and served as negative controls. In the remaining 45 disks, furcation perforations were prepared. Five disks did not receive furcation repair and served as positive controls. The remaining 40 disks were then randomly divided into four equal groups (10 disks in each group). Perforations were repaired with: MTA, PC, Biodentine(TM) or Tech Biosealer. The sealing ability of the tested materials was evaluated by measuring microleakage for each disk after four different storage periods: 24-hour, 1-month, 6-month and 1-year storage using fluid-filtration. Comparisons between the four materials and the four time periods were done using the two-way analysis of variance and the Scheffe multiple comparisons test.
  
  
  
  There was no significant difference between the mean microleakage values obtained in the four tested materials after 24 hours, 1, 6 month and 1 year. However, microleakage values for each individual material were significantly higher at 24 hours than at the other time intervals.
  
  
  
  Mineral trioxide aggregate, PC, Biodentine(TM) and Tech biosealer showed similar capabilities in sealing the furcal perforations of the primary molars, where the sealing ability improved over time for each individual material.
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Pedodontics, Faculty of Dental Medicine (Girls' Branch), Al Azhar University, Cairo, Egypt.
authors.forename: Heba M
authors.initials: HM
authors.lastname: El-Khodary
authors.affiliation: Assistant Professor, Department of Pediatric Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia, Phone: +966-555681880, e-mail: deema.farsi@gmail.com.
authors.forename: Deema J
authors.initials: DJ
authors.lastname: Farsi
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.
authors.forename: Najat M
authors.initials: NM
authors.lastname: Farsi
authors.affiliation: Department of Biomaterials, Faculty of Dentistry, October University for Modern Sciences and Arts, Egypt; Department of Restorative Dentistry, Biomaterials Division, Faculty of Dentistry, Umm AlQura University, Saudi Arabia.
authors.forename: Ahmed Z
authors.initials: AZ
authors.lastname: Zidan
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry / Q000627:therapeutic use; D017610:Calcium Compounds / Q000737:chemistry / Q000627:therapeutic use*; D001840:Dental Bonding; D003763:Dental Leakage / Q000145:classification; D003786:Dental Pulp Cavity / Q000293:injuries*; D003804:Dentin / Q000293:injuries; D004338:Drug Combinations; D005374:Filtration / Q000379:methods; D006801:Humans; D006874:Hydrostatic Pressure; D066298:In Vitro Techniques; D008422:Materials Testing; D008963:Molar / Q000293:injuries*; D010087:Oxides / Q000737:chemistry / Q000627:therapeutic use; D011897:Random Allocation; D012387:Root Canal Filling Materials / Q000737:chemistry / Q000627:therapeutic use*; D012823:Silicate Cement / Q000737:chemistry / Q000627:therapeutic use; D017640:Silicates / Q000737:chemistry / Q000627:therapeutic use; D013997:Time Factors; D014094:Tooth, Deciduous / Q000293:injuries*
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D012823:Silicate Cement; C506393:tricalcium silicate
keywords: Biodentine; Fluid-filtration technique; Furcal perforation; Microleakage; MTA; Portland cement; Primary molars; Tech biosealer