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    Öğe
    Can ultrasonography be used to determine working length in endodontic treatment? An in vitro study
    (Springer, 2024) Eren, Irem; Sariyilmaz, Oznur; Eren, Hakan; Sariyilmaz, Evren; Uslu, Gulsah
    This study was conducted to evaluate efficacy of ultrasonography (USG) in determining working length in in-vitro conditions. Twenty five access cavities of maxillary incisor teeth were opened and actual working lengths (AWL) were measured with dental operating microscope. The working length were then measured with an electronic apex locator and USG. USG and apex locator measurements were statistically analyzed using one sample t-test and compared with AWL. The mean AWL measurment was 20.68 mm. USG measured the working length slightly longer (21.09 mm) than the measurements of apex locator (20.64 mm). Statistical analysis showed that the USG method provided similar measurements to electronic apex locators and with no statistical difference with actual working length (P < .05). USG emerges as a promising method for working length measurement that allows simultaneous visualization of root tip anatomy in cases where electronic apex locators may be insufficient and there is buccal cortical bone loss.
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    Öğe
    Comparative Analysis of Temperature Changes with Preheated and Intracanal Heated Solutions and Ultrasonic Activation in Immature Teeth
    (Elsevier Science Inc, 2025) Sariyilmaz, Oznur; Sariyilmaz, Evren; Keskin, Cangul
    Introduction: The aim of this study was to examine the temperature changes on root canal and root surface in immature teeth with thin dentinal walls when irrigation solutions are preheated or intracanal heated, as well as the additional effects of passive ultrasonic irrigation (PUI) on these temperature changes. Methods: Sixteen maxillary canine teeth were trimmed to a length of 20 mm and prepared to mimic immature teeth with an apical width of 1.3 mm by enlarging those using Gates Glidden burs. To measure temperatures inside the canal and on the root surface, one thermocouple was placed from the apex into the root canal, while the other thermocouple was positioned outside the root. Irrigation was performed by heating the irrigation solution with different methods (room temperature, preheated to 60 degrees C, 5 sec intracanal heated, 20 sec intracanal heated), and PUI was applied after each method. Temperature changes occurring inside the root canal and on the root surface were recorded and subjected to statistical analysis. Results: Using the irrigation solution preheated and intracanal heated resulted in a significant increase in both intracanal and root surface temperatures compared to using at room temperature (P < .05). The application of PUI significantly increased the temperature of the irrigation solution only at room temperature group (P < .05). None of the applications caused an increase in temperature on the root surface exceeding 10 degrees C. Conclusions: Applying PUI to heated solutions does not significantly increase the temperature in heating methods, but it does prolong heat retention in the canal by slowing down the cooling process. Although using preheated solution for 20 seconds results in higher intracanal temperatures, it should be noted that the solution cools rapidly within the canal. Short-term heating applications, such as 5 seconds, repeated frequently, can help maintain the high temperature during activation.
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    Öğe
    Evaluation of different irrigation activation techniques for the removal of various medicaments from a simulated internal resorption cavity: an in vitro study
    (Springer Heidelberg, 2024) Sariyilmaz, Oznur; Uslu, Gulsah; Sariyilmaz, Evren; Keskin, Neslihan Busra
    ObjectivesThis study aimed to assess the efficacy of different activation techniques in removing calcium hydroxide (Ultracal XS), Ledermix, and Bio-C Temp from simulated internal root resorption (IRR) cavities.Materials and methods108 single-rooted maxillary incisors were prepared using Reciproc R50 files. Simulated IRR cavities, 2 mm in diameter and located 8 mm from the apex, were created. Ultracal XS, Ledermix, and Bio-C Temp were applied to the samples, grouped by irrigation activation techniques: Standard Needle Irrigation (SNI), EDDY, Passive Ultrasonic Irrigation (PUI), and XP-endo Finisher (XPF). Medicament removal efficacy was evaluated using a standardized scoring system. Statistical analysis was performed using the Kruskal-Wallis test.ResultsXPF and PUI were more effective than SNI in medicament removal across the groups, with no significant difference. EDDY showed no significant difference than other groups. Ledermix was more effectively removed in all activation groups compared to Bio-C Temp. The XPF was superior in removing Ultracal XS compared to Bio-C Temp. However, none of the groups achieved complete medicament removal.ConclusionsXPF and PUI techniques enhance medicament removal efficacy. Bio-C Temp was more difficult to remove from the IRR cavities than other medicaments.Clinical relevanceBio-C Temp could be removed from the canals less effectively compared to calcium hydroxide and Ledermix. Among the tested irrigation activation methods, XPF and PUI were found to be more effective at removing the tested medicaments.