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    Comparative analysis of three different filling techniques and the effects of experimental internal resorptive cavities on apical microleakage
    (2014) Keles A.; Ahmetoglu F.; Ocak M.S.; Dayi B.; Bozkurt A.; Orucoglu H.
    Objectives: The aim of this study was to evaluate the sealing abilities of three different gutta-percha techniques in experimentally defective roots (EDR) and non-defective roots (NR). Materials and Methods: Sixty canine teeth were divided into six groups of ten; Group 1, NR + cold lateral condensation (CLC); Group 2, EDR + LC; Group 3, NR + BeeFill; Group 4, EDR + BeeFill; Group 5, NR + Thermafil; and Group 6, EDR + Thermafil. Apical leakage was measured using a computerized fluid filtration meter with a laser system. Results: Statistical analysis revealed that the CLC demonstrated more microleakage in the EDR than in the NR (P < 0.01). Thermafil demonstrated more microleakage in the NR than in the EDR (P < 0.01). No statistically significant differences were found between the BeeFill groups (P > 0.05). Conclusions: The results of this study indicate that internal resorptive cavities can affect the apical sealing properties of different root canal filling techniques, with Thermafil ensuring the lowest apical microleakage. © 2014 Dental Investigations Society.
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    Comparison of the sealing ability of biodentine, iroot bp plus and mineral trioxide aggregate
    (Cumhuriyet University Faculty of Dentistry, 2016) Aydemir S.; Cimilli H.; Gemi P.M.; Bozkurt A.; Orucoglu H.; Chandler N.; Kartal N.
    Objective: The aim of this study was to compare the sealing ability of two new root repair materials, Biodentine and iRoot BP Plus against ProRoot MTA when used as root-end fillings. Methods: The root canals of 45 extracted maxillary anterior teeth were prepared with Pro Taper instruments. After apical resection and ultrasonic root-end cavity preparation, the teeth were divided into three groups. The cavities in the first group of 15 were filled with Biodentine, the second with iRoot BP Plus and the third with ProRoot MTA. A computerized fluid filtration method assessed the seal at 2, 10 and 28 days. Results: Significant differences were found between Groups 1-2, Groups 1-3 and between Groups 2-3 at all-time intervals (P < 0.05). Leakage was not significantly different at 10 and 28 days for Biodentine and iRoot BP Plus (P > 0.05). Conclusion: The two new root repair materials showed good performance and both offered improved handling properties compared to MTA. © 2016, Cumhuriyet Dent J. All rights reserved.
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    An evaluation of the apical seal in oval-shaped root canals prepared with either selfadjusting files or protaper files
    (Cumhuriyet University Faculty of Dentistry, 2014) Yigit D.H.; Orucoglu H.; Yavuz T.; Yavuz C.I.; Yilmaz A.; Kaba Y.N.; Ozden S.
    Objectives: This study aimed to evaluate the apical seal obtained with lateral compaction of gutta-percha in oval-shaped root canals prepared with either self-adjusting files or ProTaper Universal rotary files. Materials and Methods: Twelve pairs of extracted mandibular premolars with oval-shaped root canals were randomly divided into two groups. The first group was biomechanically prepared with ProTaper Universal files, while the self-adjusting file system was used in the second group. The roots were better filled using cold lateral compaction of gutta-percha. Apical microleakage was measured with the computerized fluid filtration method. The results were analyzed statistically using the Mann-Whitney U test. Results: All of the roots in both groups showed leakage. Group 1 demonstrated significantly less microleakage (p<0.05). Conclusions: Instrumentation of oval-shaped canals using a self-adjusting file system with cold lateral compaction of gutta-percha demonstrated significantly greater apical microleakage when compared to ProTaper Universal. The apical leakage with different filling techniques, combined with self-adjusting files, should be evaluated in further studies.