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The purpose of this study was to assess the effect of non-thermal atmospheric plasma-jet on the surface morphology of radicular
dentin. Four extracted single-root human teeth were cut 1 mm below the cement-enamel junction in order to obtain samples. The
labial sides of the samples were polished and rinsed under deionized water. The plasma stream had a length of 11 mm. The distance
between nozzle and dentin was approximately 5 mm. Argon gas is used as carrier gas at a flow of 5 l/min at 2.5 Bar. Roughly 1 cm2
of dentin surface was treated for 30 second, 60 second and 120 second with plasma jet. For SEM observations, the samples were
fixed in 2.5% gluteraldehyde in phosphate buffer (pH 7.3) for 24 hours at 4 °C and washed 3 times for 10 minutes each in phosphate
buffer. The specimens were then dehydrated in a series of aqueous ethanol solutions with ascending strengths up to 100%. They were
dried overnight in a desiccator jar and mounted with silver paint on SEM stubs. Significant differences were detected before and
after plasma treat¬ment. According to results of this study, it can be assumed that non-thermal atmospheric plasma can significantly
alter the morphology of radicular dentin, which is an important characteristic to be considered when plasma is used for clinical
Basak Kusakci Seker has completed her undergraduate education and PhD from Hacettepe University and Near East University respectively. She is a Lecturer and Clinical Specialist at Eskisehir Osmangazi University, Faculty of Dentistry, Department of Periodontology. She has published more than 20 papers and presentations and continues to study on dental implant surgery, dental laser applications, plasma disinfection, wound healing and bone regeneration techniques.