CONTEXT The study assesses the apical sealing ability of two obturating materials (resilon and gutta-percha) with their sealants by means of the dye penetration method using India ink. AIMS To compare the resistance to apical dye penetration between resilon (with Epiphany sealer; Epiphany, Pentron clinical technologies, USA) and gutta-percha (with AH Plus sealer; Dentsply, Maillefer, Germany)...

AIM To determine the possible residual antibacterial effects and possible surface changes caused by 5.25% NaOCl, 2.5% NaOCl, 2% CHX and 0.05% Octenisept on in vitro gutta-percha points after different disinfection protocols. MATERIALS AND METHODS A total of 121 standard # 40, 0.2% gutta-percha cones were cut 10 mm from the tip, sterilized with ethylene oxide. The samples were divided into fiv...

Aim: The aim of this study is to compare the efficacy of Protaper Universal,R-Endo,Peezo Reamer for gutta percha removal during re-treatment by stereomicroscopic analysis. Materials and methods: A total of 20 extracted human maxillary single rooted teeth were selected. Canal preparation was carried out by the sequential use of Kfiles up to size 30 at working length and then divided into one con...

G bstract he present study assessed the obturation removal and einstrumentation working time of canals filled with esilon/Real Seal in comparison with canals filled with utta-percha/AH Plus. Thirty human extracted canines ere instrumented. In group 1 (n 15) root canals ere filled with Resilon/Real Seal and in group 2 (n 5) with gutta-percha/AH Plus sealer. The obturations ere removed from both ...

OBJECTIVES To evaluate the effectiveness of chlorhexidine (CHX) or sodium hypochlorite (NaOCl) in disinfecting gutta-percha cones, to verify contamination of gutta-percha cones in their boxes, and to identify microorganisms after intentional contamination by handling cones. STUDY DESIGN Gutta-percha cones contaminated in vitro with several microorganisms were left in contact with tested disin...

Objective: Chloroform is an organic solvent extremely effective in dissolving the gutta-percha, but it is a potential carcinogen. The aim of this study is to compare the effectiveness of different alternative solvents with ability to dissolve gutta-percha that can be regarded a practicable alternative to chloroform. Materials and Methods: Stainless steel ring molds were used to create 50 gutta-...

To evaluate the effectiveness of the ProTaper and Mtwo retreatment systems for removal of resin-based obturation techniques during retreatment. A total of 160 maxillary anterior teeth were enlarged to size 30 using ProTaper and Mtwo rotary instruments. Teeth were randomly divided into eight groups. Resilon + Epiphany, gutta-percha + Epiphany, gutta-percha + AH Plus and gutta-percha + Kerr Pulp ...

Resilon is a new material that is a candidate to replace gutta-percha as a root filling material. This study evaluated the antiproliferative effect of Resilon and two commercially available gutta-percha points (Roeko, Dentsply). Two established cell lines (L929 and RPC-C2A) were used for the experiment. Cell survival fraction was estimated by the sulforhodamine-B assay, in reference to controls...

OBJECTIVE To compare the efficacy of gutta-percha removal achieved with simple mechanical technique using two different solvents. MATERIALS AND METHODS It was an in vitro experimental study conducted at the Aga Khan University Hospital, Karachi, Pakistan on 27 extracted human molars divided into two groups by alternate sampling technique. The teeth were prepared by manual filing and obturated...

Context: Gutta percha are known to be contaminated during storage and intra operative manipulation. Chair side disinfection of these points is important and critical for success of endodontic therapy. Gutta percha being heat labile, chemical disinfection is the only viable alternative which takes longer time and may leave a residue. Herbal gels are known to have antimicrobial , antiseptic prope...