Sealing ability of a new carrier-based obturating material.
OBJECTIVE
The aim of the present study was to investigate the in vitro sealing ability of a new obturating material (Real Seal 1, SybronEndo, Orange, CA, USA) and compare it with the Thermafil (Dentsply Maillefer, Baillargues, Switzerland) and One-Step systems (CMS Dental, Copenhagen, Denmark).


METHODS
Forty-four freshly extracted lower premolars teeth were selected and a root canal treatment was performed using a crown-down Nickel-Titanium rotary preparation technique. Teeth were randomized into three groups (N.=14): 1) Thermafil group; 2) One/step group; 3) Real Seal 1 (RS1) group. The remaining two teeth served as controls. A fluid filtration system device was utilized to assess quantitatively the microleakage. Statistical analyses were performed by ANOVA and significance was set at 95%.


RESULTS
Data clearly showed that the RS1 provided the best results, showing a minimal leakage after 24 hours. Statystical analysis showed a significant difference about the RS1 group, the Thermafil and One/Step group, while no significant differences were noted between these last two groups. Results show that the number of teeth that had no (=0) leakage was higher in the RS1 group (8 specimens) than in the remaining ones (1 and 1 specimen, respectively).


CONCLUSIONS
Under the conditions of the present experimental test, the new RS1 material (carrier-based Resilon) provided excellent preliminary results showing sealing ability at 24 hours significantly better that traditional carrier-based gutta-percha systems.
Testarelli
L
L
Department of Dental Sciences, La Sapienza University, Rome, Italy.
Milana
V
V
Rizzo
F
F
Gagliani
M
M
Gambarini
G
G
D001641:Bicuspid / Q000187:drug effects; D006171:Gutta-Percha / Q000494:pharmacology; D006801:Humans; D066298:In Vitro Techniques; D008422:Materials Testing; D010969:Plastics / Q000494:pharmacology; D011897:Random Allocation; D012117:Resins, Synthetic / Q000494:pharmacology; D012387:Root Canal Filling Materials / Q000494:pharmacology*; D012389:Root Canal Obturation; D014088:Tooth Permeability / Q000187:drug effects
D010969:Plastics; D012117:Resins, Synthetic; D012387:Root Canal Filling Materials; C486892:resilon sealer; D006171:Gutta-Percha