title: Push-out bond strength of three calcium silicate cements to root canal dentine after two different irrigation regimes.
abstract: OBJECTIVE
  The aim of this study was to compare the push-out bond strength of three calcium silicate cements to dentine after two different irrigation regimes.
  
  
  METHODS
  One hundred eighty 2-mm-thick root sections were prepared. The sections were divided into three main groups (n = 60). In group A, the sections were immersed in 1 % NaOCl for 3 min. In group B, the sections were immersed in 17 % EDTA for 3 min followed by 1 % NaOCl for the same period of time. In group C (control group), no irrigation was applied to the sections. The samples from each group were divided into four subgroups (n = 15). In subgroups A1, B1 and C1, DiaRoot BioAggregate; in subgroups A2, B2 and C2, MTA-Angelus and in subgroups A3, B3 and C3, MM-MTA were mixed with hand-mixing. In subgroups A4, B4 and C4, MM-MTA was mixed with auto-mixing. The mixed cements were then placed into cavities with a carrier. The samples were submitted to the push-out test and were loaded. All the data were analysed with one-way analysis of variance and the Tukey HSD multiple comparisons (p < 0.05).
  
  
  RESULTS
  There were no statistically significant differences between the irrigation regimes regardless of the used materials. The resistance to displacement in subgroup B4 was significantly greater than that presented by subgroups A3, B3 and C3 (p < 0.05) while not different than all other groups.
  
  
  CONCLUSIONS
  Irrigation regimes had not affected the push-out bond strength of the calcium silicate cements. Also, strength of auto-mixed MM-MTA was similar to the other cements.
  
  
  CONCLUSIONS
  The novel calcium silicate cements would be a potentially useful material in endodontic procedures with favourable properties.
authors: Department of Endodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
authors: Davut
authors: D
authors: Çelik
authors: Department of Endodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey. kursater@akdeniz.edu.tr.
authors: Kürşat
authors: K
authors: Er
authors: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors: Ahmet
authors: A
authors: Serper
authors: Department of Endodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
authors: Tamer
authors: T
authors: Taşdemir
authors: Department of Endodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
authors: Kadir Tolga
authors: KT
authors: Ceyhanlı
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D003738:Dental Cements; D003786:Dental Pulp Cavity / Q000737:chemistry*; D003804:Dentin / Q000737:chemistry*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D017640:Silicates / Q000737:chemistry*; D007507:Therapeutic Irrigation
chemical_list: D017610:Calcium Compounds; D003738:Dental Cements; D017640:Silicates; C031293:calcium silicate
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