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Öğe Effect of Different Final Irrigation Methods on the Removal of Calcium Hydroxide from an Artificial Standardized Groove in the Apical Third of Root Canals(ELSEVIER SCIENCE INC, 2014) Capan, Ismail Davut; Ozcan, Erhan; Arslan, Hakan; Ertas, Huseyin; Aydinbelge, Hale AnIntroduction: The aim of this study was to compare the efficacy of conventional syringe, ultrasonic, EndoVac (Discus Dental, Culver City, CA), and Self-Adjusting File (SAF) (Re-Dent-Nova, Ra'nana, Israel) irrigation systems in removing calcium hydroxide (Ca[OH](2)) from simulated root canal irregularities. Methods: The root canals of 88 extracted single-rooted teeth were prepared using ProTaper rotary instruments (Dentsply Maillefer, Ballagiues, Switzerland) up to size F4. The roots were split longitudinally, and a standardized groove was prepared in the apical part of 1 segment. The root halves were reassembled, and Ca(OH)(2) medicament was placed into the root canals using a Lentulo spiral. The roots were randomly divided into 4 experimental groups and 2 control groups according to the different irrigation systems used: conventional syringe irrigation, continuous passive ultrasonic irrigation (PUI), EndoVac irrigation, and SAF irrigation. Each group was then divided into 2 subgroups (n = 10) according to the irrigation protocol: subgroup 1: 10 mL 2.5% NaOCl and subgroup 2: 10 mL 17% EDTA + 10 nnL 2.5% NaOCl. The amount of remaining medicament was evaluated under a stereomicroscope at 30x magnification using a 4-grade scoring system. The influences of the different Ca(OH)(2) medicament removal methods and irrigation protocols were statistically evaluated using 2-way analysis of variance and Tukey post hoc tests. Results: In the NaOCl-irrigated groups, PUI removed significantly more Ca(OH)(2) medicament than the other techniques (P <.05). There was no significant difference among the other groups (P>.05). In the EDTA/NaOCl-irrigated groups, the SAF and PUI removed significantly more Ca(OH)(2) than the other techniques (P <.05). Conclusions: The use of the SAF system with the combination of EDTA and NaOCl enhanced Ca(OH)(2) removal when compared with the use of only NaOCl irrigation with the SAF. Continuous PUI and SAF were more effective than EndoVac, and conventional syringe irrigation in the removal of the Ca(OH)(2) medicament from an artificial Standardized groove in the apical part of the root canal.Öğe Fracture Strength of Roots Instrumented with Self-Adjusting File and the ProTaper Rotary Systems(ELSEVIER SCIENCE INC, 2014) Capar, Ismail Davut; Altunsoy, Mustafa; Arslan, Hakan; Ertas, Huseyin; Aydinbelge, Hale AriIntroduction: The purpose of this study was to evaluate the fracture strength of roots instrumented with the Self Adjusting File (SAF; ReDent-Nova, Ra'anana, Israel) and the ProTaper system (Dentsply Maillefer, Ballaigues, Switzerland) and filled with the cold lateral compaction technique. Methods: In total, 50 mandibular premolar teeth were sectioned at or below the cementoenamel junction to obtain roots 13 mm in length. The roots were balanced with respect to buccolingual mesiodistal diameters and weight. They were distributed into 4 experimental groups and 1 control group (n = 10): no instrumentation (control group), instrumentation with ProTaper rotary files but no filling (PT), instrumentation with ProTaper rotary files and filling with cold lateral compaction (PT filling), instrumentation with SAF but no filling (SAF), and instrumentation with SAF and filling with cold lateral compaction (SAF filling). AH Plus sealer (Dentsply DeTrey, Konstanz, Germany) was used along with gutta-percha points. One week later, a vertical load was applied to the specimen's canal until fracture occurred. Data were statistically analyzed using 1-way analysis of variance (P =.05). Results: The mean fracture load was 244 +/- 51 N for the control group, 226 +/- 21 N for the PT, 242 +/- 45 N for PT filling, 233 +/- 14 N for the SAF, and 271 +/- 44 N for SAF filling. However, the differences were not statistically significant (P >.05). Conclusions: Instrumentation with the SAF or the ProTaper rotary system did not change the fracture strength of standardized roots with respect to cross-sectional diameter and weight.Öğe Use of Negative Apical Pressure Technique for Removal of Apically Extruded Gutta-percha Fragment – A Case Report(Selçuk Üniversitesi, 2021) Arslan, Hakan; Yıldız, Ezgi Doğanay; Karataş, ErtuğrulThe aim of this case report was to present using negative apical pressure technique for removal of apically extruded gutta-percha during retreatment procedures. A 22 year-old female patient was referred to the clinic with severe pain, swelling, and tenderness to percussion and palpation in the tooth of #26. Periapical radiograph showed previous root canal treatment of tooth #26 with incomplete root canal fillings. During retreatment procedures gutta-percha apically extruded from mesial root canal. The patient was recalled after one day. At the second session, it was observed that the swelling was increased. One of the tips for calcium hydroxide paste application was adjusted to suction of dental unit. Tip was placed into the canal as deep as possible. After a few attempts, apically extruded gutta-percha was removed and the patient was recalled after one day. At one day from the fragment removal, the swelling was decreased. Calcium hydroxide paste was placed into the canals for one week. At the fourth session, the patient was asymptomatic and the treatment was completed at this session.