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    Bacterial killing by several root filling materials and methods in an ex vivo infected root canal model
    (WILEY-BLACKWELL, 2011) Ozcan, E.; Eldeniz, A. U.; Ari, H.
    Ozcan E, Eldeniz AU, Ari H. Bacterial killing by several root filling materials and methods in an ex vivo infected root canal model. International Endodontic Journal, 44, 1102-1109, 2011. Aim To evaluate the ability of two root canal sealers (Epoxy resin-based AH Plus (R) or polydimethylsiloxane-based GuttaFlow (R)) and five root filling techniques (continuous wave of condensation, Thermafil (R), lateral condensation, matched taper single gutta-percha point, laterally condensed-matched taper gutta-percha point) to kill bacteria in experimentally infected dentinal tubules. Methodology An infected dentine block model was used. One hundred and twenty extracted, single-rooted human teeth were randomly divided into 10 test (n = 10) and 2 control (n = 10) groups. The roots, except negative controls, were infected with Enterococcus faecalis for 21 days. The root canals were then filled using the test materials and methods. Positive controls were not filled. Sterile roots were used as negative controls. Dentine powder was obtained from all root canals using gates glidden drills using a standard method. The dentine powder was diluted and inoculated into bacterial growth media. Total colony-forming units (CFU) were calculated for each sample. Statistical analysis was performed using the KruskalWallis and MannWhitney U test. Results The epoxy resin-based sealer was effective in killing E.faecalis except when using Thermafil (P < 0.05), but the polydimethylsiloxane-based sealer was not effective in killing this microorganism except in the continuous wave group (P < 0.05). Conclusions In the test model, AH Plus killed bacteria in infected dentine more effectively than GuttaFlow. The filling method was less important than the sealer material.
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    Binding of nucleotides to anti-chloroglyoxime for DNA labeling
    (SPRINGER, 2014) Yildiz, S.; Maltas, E.; Findik, M.; Ozcan, E.
    [Abstract not Available]
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    DNA labeling of vitamin D receptor gene by using schiff base
    (SPRINGER, 2014) Maltas, E.; Findik, M.; Yildiz, S.; Ozcan, E.
    [Abstract not Available]
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    The effect of calcium silicate-based sealer on the push-out bond strength of fibre posts
    (WILEY, 2012) Ozcan, E.; Capar, I. D.; Cetin, A. R.; Tuncdemir, A. R.; Aydinbelge, H. A.
    Background: The aim of this study was to assess the effect of the iRoot SP root canal sealer on the push-out bond strength of fibre posts cemented with self-adhesive resin cement. Methods: Forty-eight extracted maxillary incisors were randomly divided into four groups according to the tested sealer (n = 12): group 1 control (only gutta-percha points, no sealer); group 2 AH Plus Jet (resin-based sealer); group 3 Endofill (zinc oxide-eugenol-based sealer); and group 4 iRoot SP (calcium silicate-based sealer). All root canals were filled with gutta-percha, and groups 24 additionally received one of the sealers. Fibre posts were cemented with the self-adhesive resin cement Clearfil SA Cement. The specimens were sectioned in the coronal, middle and apical regions, producing three slices of 1 mm thickness. The push-out test was performed. All data were submitted to ANOVA and Tukey tests (a = 0.05). Results: No statistically significant differences were found between the control group, AH Plus Jet and iRoot SP (p > 0.05). The Endofill sealer showed significantly lower bond strength compared to the other sealers and the control group (p < 0.05). Conclusions: The calcium silicate-based sealer did not adversely affect the bond strength of the fibre posts cemented with self-adhesive resin cement.
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    Isokinetic evaluation of ankle muscle strength and fatigue in patients with ankylosing spondylitis
    (EDIZIONI MINERVA MEDICA, 2011) Sahin, N.; Ozcan, E.; Baskent, A.; Karan, A.; Ekmeci, O.; Kasikcioglu, E.
    Aim. The aim of the study was to compare the strength and fatigue of ankle plantarflexor/dorsiflexor muscles using isokinetic dynamometer in patients with ankylosing spondylitis (AS) versus healthy control subjects. Design. A controlled study Setting. Outpatients clinic of our Department of Physical Medicine and Rehabilitation. Population. Twenty-six AS patients and 26 control subjects participated in this study. Methods. In both groups the isokinetic tests are conducted by isokinetic dynamometer. The evaluations were made in plantarflexion/dorsiflexion patterns;peak torque, agonist/antagonist ratio and work fatigue isokinetic parameters were evaluated for the ankle 30 degrees/s, 60 degrees/s, 120 degrees/s angular velocities. Pain severity, clinical findings, and functional status were also evaluated in the study group. Results. In the patient group, ankle plantarflexion muscle strength was significantly lower compared to the control group in all angular velocities (P<0.05). Agonist/antagonist ratio was significantly lower in the patient group compared to the control group in all angular velocities (P<0.01). The work fatigue was decreased for bilateral ankle plantarflexors at 120 degrees/s angular velocities (P<0.05). There was no significant difference between the measurements of ankle dorsiflexors (P>0.05). There was no relation between the decreased muscle strength and pain severity, clinical findings, and functional status of AS patients. Conclusion. We found ankle muscles fatigue and decreased ankle plantarflexor muscle strength in patients with AS compared to control subjects.