Person: TÜRKAYDIN, DİLEK
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TÜRKAYDIN
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DİLEK
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Publication Metadata only The effect of operator-induced variability on the physical properties of ProRoot MTA(WOLTERS KLUWER MEDKNOW PUBLICATIONS, 2020) TÜRKAYDIN, DİLEK; Kosar, M. Aytore; Basturk, F. B.; Turkaydin, D.; Nekoofar, M. H.Aims: The aim of this study was to compare the influence of operators on the microhardness and compressive strength of mineral trioxide aggregate (MTA). Materials and Methods: Forty dental specialists were asked to prepare a series of MTA samples. The tested material was ProRoot MTA (DentsplyMaillefer, Switzerland). Each participant prepared one sample to a consistency they considered acceptable for use in practice (improvised group) and another one according to the manufacturer's recommended water-to-powder (WP) ratio (pre-weighed group). The samples were incubated at 37 degrees C and 95% humidity for 4 days. Parameters evaluated in this study were microhardness and compressive strength. Results: Operators mixed MTA samples with varying WP ratios. However, there was no significant difference between the microhardness and compressive strength values of MTA samples between the improvised, the pre-weighed and the control groups. MTA was mixed in a thicker consistency than the manufacturers recommended ratio (0.33) by 62.5% of the operators. Conclusion: According to the results of this study, even though the WP ratios that were utilized in the clinical setting vary, microhardness and compressive strength values of MTA was not significantly affected.Publication Metadata only Acil endodontik tedavilerde anestezi(2022-08-01) GÖKER KAMALI, SELİN; TÜRKAYDIN, DİLEK; Göker Kamalı S., Türkaydın D.Endodontik acil durum, pulpal veya periapikal dokuların inflamasyon veya enfeksiyonunun neden olduğu ağrı veya şişlik olarak tanımlanmaktadır. Acil endodontik tedavi sırasında akut ağrılı geri dönüşümsüz pulpitisli dişlerin derin pulpal anestezisini sağlamak klinisyenler için zor olabilmektedir. Asemptomatik dişler ile karşılaştırıldığında semptomatik geri dönüşümsüz pulpisitli dişlerde inferior alveolar sinir blok (İASB) anestezi tekniğinin başarı oranı daha düşüktür. Bu bölümde geri dönüşümsüz pulpitisli alt çene büyük azı dişlerinde İASB anestezisinin başarı oranını artırmak için kullanılan çeşitli yöntemler incelenmiştir.Publication Metadata only Comparison of apical extrusion of sodium hypochlorite in immature teeth after needle irrigation, ultrasonic irrigation, EDDY, Er:YAG, and diode lasers(2023-12-01) GÖKER KAMALI, SELİN; TÜRKAYDIN, DİLEK; Karasu A. E., GÖKER KAMALI S., TÜRKAYDIN D.© 2022, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.This study aimed to assess the apical extrusion of sodium hypochlorite in immature teeth caused by needle irrigation, ultrasonic irrigation, EDDY, Er:YAG, and diode lasers. Seventy-five human maxillary anterior teeth were selected. After the apical 3 mm of the roots was resected, the canal lumen was enlarged with #2 to #5 Gates-Glidden burs. The teeth were fixed to the lid of a flat-sided clear plastic container, and the plastic containers were filled with 0.2% agarose gel containing 1 mL of 0.1% m-cresol purple. Then, the specimens were allocated into five groups according to the irrigation activation techniques: needle irrigation, ultrasonic irrigation, EDDY, Er:YAG laser, and diode laser. The apical extrusion of sodium hypochlorite caused the color change in the gel. The containers were digitally photographed, and the percentage of pixels of irrigant extrusion (the color change) in each photograph was calculated. The diode laser group showed a significantly lower percentage of pixels than needle irrigation, EDDY, and Er:YAG laser (p 0.05). All the groups caused irrigant extrusion in the immature teeth. The diode laser and ultrasonic irrigation caused less sodium hypochlorite extrusion than EDDY and Er:YAG laser. The needle irrigation showed more irrigant extrusion than the only diode laser group.Publication Metadata only Efficacy of EndoActivator, CanalBrush, and Passive Ultrasonic Irrigation in the Removal of Calcium Hydroxide Paste with Iodoform and p-chlorophenol from Root Canals(WOLTERS KLUWER MEDKNOW PUBLICATIONS, 2020) TARÇIN, BİLGE; Turkaydin, D.; Basturk, F. B.; Goker, S.; Tarcin, B.; Berker, Y. Garip; Ovecoglu, H. SazakAims: We evaluated and compared EndoActivator, CanalBrush, and passive ultrasonic irrigation (PUI) in the removal of calcium hydroxide and calcium hydroxide with iodoform and p-chlorophenol paste (Calcipast Forte) from artificial standardized grooves in the apical third of root canals. Materials and Methods: A total of 34 mandibular premolars were prepared and then split longitudinally. A standardized groove was prepared in the apical part of both segments. The grooves were filled with either calcium hydroxide or Calcipast Forte, and the segments were reassembled. CanalBrush, EndoActivator, or PUI were used. The amount of remaining medicament was evaluated using a four-grade scoring system. Results: None of the irrigation methods could completely remove the pastes from the grooves. More Calcipast Forte paste was detected compared with calcium hydroxide (P < 0.01). PUI was the least effective method in removing Calcipast Forte. Conclusions: It was more difficult to remove Calcipast Forte than a water-based calcium hydroxide paste.Publication Open Access Effect of different obturation techniques on sealer penetration into dentinal tubules after final irrigation with xp-endo finisher file(2022-07-01) GÖKER KAMALI, SELİN; TÜRKAYDIN, DİLEK; Demir E., Göker Kamalı S., Türkaydın D.The first objective of this research was to evaluate the effectiveness of XP-Endo Finisher on dentinal tubule penetration of irrigation solution using confocal laser scanning microscopy. The main purpose of this research was to compare the effect of cold lateral condensation, continuous wave obturation and core-carrier based techniques on sealer penetration. Sixty mandibular premolars were prepared and allocated into two experimental groups (n=30) as the final irrigation technique and obturation technique experiment. In the final irrigation technique experiment, final irrigation was performed with XP-Endo Finisher, passive ultrasonic irrigation (PUI) and conventional needle irrigation (CNI) (n=10). The roots in the obturation technique experiment were also assigned into 3 groups and obturated with cold lateral condensation, continuous-wave obturation and core-carrier techniques (n=10). The most effective activation method, which emerged as a result of the first part of this study, was used as the final irrigation method in the obturation technique experiment. Then, all roots were sectioned in 1-mm-thick slices at 3mm from the apex for scanning. In terms of depth and percentage of material penetration, CNI exhibited significantly the lowest values and no significant difference was found between others. Also, there was no significant difference among obturation methods. In conclusion, XP-Endo Finisher and PUI are more effective than CNI on irrigant penetration. Sealer penetration into dentinal tubules is independent of obturation techniques.Publication Metadata only Cyclic fatigue resistance and shaping ability of heat-treated nickel-titanium instruments after repeated use(WOLTERS KLUWER MEDKNOW PUBLICATIONS, 2021) TÜRKAYDIN, DİLEK; Kamali, S. G.; Turkaydin, D.Aims: To evaluate the effect of multiple-use and sterilization on cyclic fatigue and shaping ability of heat-treated nickel-titanium (NiTi) rotary instruments. Methods: A total of 120 acrylic blocks with S-shaped canals were photographed and prepared by HyFlex CM, ProTaper Next, and Twisted File. Ten new sets of each rotary instruments were used for four times. The autoclaving process was repeated after each use. Pre- and post instrumentation images were superimposed. The amount of resin removal and canal transportation by each system was measured in eleven different points. Instruments were subsequently subjected to a cyclic fatigue test in a double-curved artificial canal. The means and standard deviations of the number of cycles to failure (NCF) were calculated and statistically analyzed (P < 0.05). Results: No fractures occurred during the shaping of the simulated canals. The ProTaper Next removed the greatest amount of resin, whereas the Twisted File had the lowest values at all levels. Repeated clinical use and sterilization resulted in a decrease in the resin removal at most levels in Twisted File and ProTaper Next. In terms of canal transportation, an increase in a limited number of levels was detected after repeated use of all rotary files. Twisted File had the greatest cyclic fatigue resistance, followed by HyFlex CM and ProTaper Next (P < 0.05). Conclusions: The effects of repeated use and autoclaving on the cyclic fatigue resistance of HyFlex CM, ProTaper Next, and Twisted File were not significant. Canal transportation increased mostly in the apical region. The amount of resin removal decreased as the number of use increased for ProTaper Next and Twisted File instruments.