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#25 / 0.06 Güta perka konların çap farklılığının değerlendirilmesi
(Dicle Üniversitesi Diş Hekimliği Fakültesi, 2023) Zengin, Ezgi İlkay; Yolcu, Elif Nur; Özata, Merve Yeniçeri
Amaç: Üreticiler kanalda sızdırmazlık sağlamak ve çalışma süresini kısaltmak amacıyla farklı boyutlarda endodontik eğelerle eşleşen güta perka konileri üretmektedirler. Bu çalışmanın amacı aynı boyutlarda üretilmiş 3 farklı güta perka markasının çaplarının karşılaştırılmasıdır. Gereç ve Yöntem: Pearl Endo, Diadent, Pearl Endopia markalarına ait 0,25 mm apikal çaplı 0,06 mm taperli güta perka konların D1,D3 ve D16 çapları milimetrik kağıt ve elektronik kaliper yardımıyla kullanılarak ölçüldü (n=60). İstatistiksel değerlendirmeler altın standarta göre ve markalar arasında yapıldı. Bulgular: D1, D3 ve D16 seviyeleri için yapılan çap genişliği ölçümü Pearl Endopia markasında diğer iki güta perka markasına göre altın standart değerden anlamlı derecede daha fazla iken (p<0,05), Pearl Endo ve Diadent markalarında anlamlı derecede daha azdır (p<0,05). Gruplar arası karşılaştırmada D1 ve D3 seviyelerinde Pearl Endo ve Diadent markaları için fark bulunmazken (p>0,05), Pearl Endopia çapları diğer iki gruba göre anlamlı derecede daha fazlaydı (p<0,05). Sonuç: Farklı markalar tarafından üretilen GP konların aynı seviyedeki çaplarının farklı olabileceği bulundu.
Accuracy of four different apex locators in primary molars: An in vitro study
(Türkiye Klinikleri Yayınevi, 2023) Akleyin, Ebru; Özata, Merve Yeniçeri; Kaya, Sadullah
Objective: The aim of this study is to compare and evaluate the accuracy of 4 different electronic apex locators (EALs) (Root ZX Mini, Raypex 6, Propex Pixi, and E-Pex Pro) in primary molars with and without root resorption. Material and Methods: Forty-eight mandibular primary molar teeth with (24 teeth) and without (24 teeth) physiological root resorption, each with 4 root canals, were included in the study (96 canals in with resorption group and 96 canals in without resorption group) (n=192 root canals). The actual working length (AWL) was determined by subtracting 0.5 mm from the measured length for each canal. The differences between AWL and electronic working length readings of the 4 EALs and accuracy rates within specified tolerance intervals (TI; ±0.5 and ±1.0 mm) were calculated. Results: The presence of resorption in the teeth significantly affected the measurement using Root ZX Mini (p<0.05). In teeth without resorption, all EALs yielded an accuracy rate of 100% at ±1.0 mm TI, whereas the accuracy rates ranged from 91.7% to 95.8% at ±0.5 mm TI. In teeth with resorption, EALs yielded accuracy rates of 74.0%-65.6% at ±1.0 mm TI and 52.1%- 60.4% at ±0.5 mm TI. Conclusion: At ±0.5 mm TI, Raypex 6 had greater accuracy in teeth without root resorption, whereas Propex Pixi had greater accuracy in teeth with root resorption. Apex locator preference may vary depending on the presence or absence of resorption.
Antimicrobial activity of phytic acid, citric acid, and EDTA with and without propolis against Enterococcus Faecalis and Candida Albicans
(Mashhad University of Medical Sciences, 2022) Özata, Merve Yeniçeri; Acer, Ömer; Demirci, Özlem; Çolak, Mehmet; Tartuk, Gizem Akın
Introduction: This study aimed to investigate the antimicrobial efficacy of chelation agents on Enterococcus faecalis (E. faecalis) and Candida albicans (C. albicans) when used alone or in combination with propolis. Methods: One hundred fifty mandibular premolar teeth were selected. Each canal was prepared with Reciproc R25. The roots were then divided into two parts along their long axis (n=300). For E. faecalis and C. albicans, the samples were divided into 16 groups (14 experimental and 2 control) as follows: Group 1A-1B [17% Ethylenediaminetetraacetic acid (EDTA)], Group 2A-2B [10% Citric Acid (CA)], Group 3A-3B [1% phytic acid/inositol hexaphosphate (IP6)], Group 4A-4B (17% EDTA+8 mg/mL propolis), Group 5A-5B (10% CA+8 mg/mL propolis), Group 6A-6B (1% IP6+8mg/mL propolis), Group 7A-7B (8 mg/mL propolis), Control A-B (Dimethyl Sulfoxide). Each tooth was randomly irrigated with 2 mL of one of the group solutions or dispersions for 5 min, and the solutions were examined for the bactericidal effect. Results: For C. albicans, all groups showed less optical density (OD) than the control group (P<0.05). The propolis group and the IP6 group had higher OD values than the CA group (P<0.05). For E. faecalis, on the other hand, significantly lower OD values were observed in the propolis+ CA group, compared to the CA and propolis groups (P<0.05). There was no significant difference between microbial growth among IP6, EDTA, propolis+ CA, propolis+IP6, and propolis+ EDTA groups (P>0.05). Conclusion: CA and IP6 showed promising results in eliminating E. faecalis, one of the collective organisms responsible for failed root canals.
Apically extruded debris and irrigants during root canal instrumentation with TruNatomy and ProTaper Gold rotary file systems
(Pagepress Publication, 2021) Falakaloğlu, Seda; Özata, Merve Yeniçeri; İriboz, Emre
Aim: The objective of this study was to evaluate the amount of apically extruded debris and irrigants produced by TruNatomy and ProTaper Gold in mandibular incisor root canals. Methodology: Forty mandibular incisors were instrumented using TruNatomy (Dentsply Sirona, Maillefer, Ballaigues, Switzerland) and ProTaper Gold (Dentsply Sirona, Maillefer, Ballaigues, Switzerland) rotary systems. Apically extruded debris and irrigants during instrumentation were collected into preweighed Eppendorf tubes and were assessed with an electronic scale. All the procedures were performed in a 35 degrees C hot water bath. The data were analyzed using the Shapiro-Wilk test and Mann-Whitney U test at a 5% significance level. Results: Both NiTi file systems investigated extruded debris from the apical foramen. According to the data, the TruNatomy group extruded significantly less debris and irrigant from the apical foramen than the ProTaper Gold group (p<0.05). Conclusions: All the instruments caused apical extrusion. The TruNatomy instruments extruded less debris and irrigants apically than the ProTaper Gold instruments.
Apically extruded debris evaluation with the use of ProTaper Ultimate and TruNatomy files systems with and without glider preparation in primary tooth
(MRE Press, 2024) Eskibağlar, Büşra Karaağaç; Özata, Merve Yeniçeri
Information regarding the influence of resorption and glide paths on debris extrusion in primary teeth is lacking. Therefore, we evaluated debris extrusion with and without resorption and with and without the use of a path file in primary molar teeth prepared with ProTaper Ultimate (PTU) Prime and TruNatomy (TRN) Prime rotary file systems. Forty resorbed and forty non-resorbed primary molar teeth were collected. Both groups were divided into four subgroups (n = 10). The Eppendorf tubes were weighed pre-debris. The distal canals of the teeth were prepared with PTU Prime and TRN Prime file systems, with and without the use of path files. The debris-filled tubes were weighed, and the weight of only the extruded debris was calculated by subtraction. The data were analyzed using a three-way analysis of variance (ANOVA) test. The presence of tooth resorption significantly increased debris extrusion, and the use of a path file significantly decreased debris extrusion (p < 0.001). The binary and ternary interactions of the three evaluated parameters among the groups showed no significant differences in terms of the amount of debris extruded (p > 0.05). While debris extrusion was observed in all groups, the use of a glide path file in primary teeth before the preparation process resulted in less debris extrusion.
Comparison of dentinal tubule penetration of three different root canal sealers by confocal laser scanning microscopy
(Wolters Kluwer, 2023) Gülmez, Hafize Kılıç; Kaya, Sadullah; Özata, Merve Yeniçeri
Aim: This study compared three different root canal sealers in terms of depth, area, and percentage of penetration into dentinal tubules. Methods: Sixty extracted human mandibular premolars were allocated into three groups, each containing twenty teeth, and filled with either AH Plus, MTA Fillapex, or Well Root ST root canal sealers, and gutta‑percha. Horizontal sections were taken at a distance of 1, 4, and 7 mm levels from the apical of the teeth and examined under a confocal laser scanning microscope (CLSM). Statistical analysis of the data involved running a Kruskal–Wallis‑H‑test. Results: There was no significant difference between the sealers in the apical and middle sections (P > 0.05). The penetration area and depth in the coronal section were the lowest in the MTA Fillapex compared to the AH Plus sealer (P < 0.05). There was no significant difference between the sections in terms of penetration percentage (P > 0.05). Conclusion: The sealers presented similar dentinal penetration area, depth, and percentage on the middle and apical sections. In the coronal section, the values were high within three parameters.
Comparison of ProTaper Ultimate, TruNatomy, and Rotate rotary files in apical debris extrusion
(2023) Eskibağlar, Mehmet; Özata, Merve Yeniçeri; Tımıs, Lucia Lacobina
Aim: The aim of this study is to evaluate the amount of debris extruded apically by the primary shaping files of three rotary file systems manufactured with different alloy technologies [TruNatomy (TRN), ProTaper Ultimate (PTUltimate), and VDW.Rotate (VDW.R) files]. Methodology: Thirty lower premolar teeth with moderate curvature (10- 20°) were randomly divided into three equal groups (n=10) according to three rotary file systems [TRN (26.04v), PTUltimate (25.08v), and VDW.R (25.06v)]. The debris extruded apically was collected in Eppendorf tubes of known weights. After preparation, the tubes were placed in an incubator at 70°C for five days to evaporate the distilled water. The tubes filled with debris were then weighed again, and the net weight of the extruded debris was calculated in grams (g) by subtracting the initial weight from the final weight. The data were analyzed using one-way ANOVA test. Results: There was no significant difference in the amount of debris extruded apically by the three shaping files (p > 0.05). The highest amount of debris extruded apically was 0.9534 g for PTUltimate. VDW.R extruded the minimum amount of debris apically, with 0.1833 g. Conclusion: All rotary files have caused apical debris extrusion. Even though there was no significant difference among the files, the VDW.R file extruded less debris compared to other file systems.
Comparison of XP-endo Finisher, self-adjusting file, and Canal Brush systems on the removal of calcium hydroxide paste from root canals
(Mashhad University of Medical Sciences, 2023) Özata, Merve Yeniçeri; Kaya, Sadullah; Arıkan, Nihal Firdevs Özfidan; Zengin, Ezgi İlkay; Tartuk, Gizem Akın
Introduction: This study aimed to compare the effectiveness of XP-endo Finisher (XPF), self-adjusting files (SAF), and Canal Brush (CB) systems in removing calcium hydroxide (CH) from an artificial standardized groove (ASG) created in the apical root area. Methods: Fifty-five mandibular premolar teeth were prepared to size Reciproc R40 and were split longitudinally. An ASG was prepared in the apical third of the root and filled with CH. The root halves were reassembled, and the samples were divided into two control groups [positive control and negative control (n=5)] and three experimental groups [XPF, SAF, and CB, (n=15)]. The results were evaluated according to a four-grade scoring system to assess the remained CH in ASGs. The statistical difference between the groups was analyzed using the Kruskal-Wallis test. Results: There was no statistically significant difference between the experimental groups in the ability to remove CH from the apical root thirds (P>0.05). Conclusion: None of the finishing techniques could completely clean CH. The SAF, XPF, and CB systems showed comparable efficacy in removing CH from the roots. © 2023 Mashhad University of Medical Sciences\.
Determining the mental foramen location in a Turkish population: A cone beam computed tomography study
(2021) Falakaloğlu, Seda; Eskibağlar, Mehmet; Özata, Merve Yeniçeri; Kaya, Sadullah; Tartuk, Gizem Akın
Purpose: Mental foramen (MF) is defined as the gap generally located between the first and second premolars on the outer surface of the mandible. The well-defined MF location has been considered to be extremely important for dental procedures. Thus, this study primarily aims to identify the MF loca- tion among the Turkish population based on gender using cone beam computed tomography (CBCT). Methods: In this study, sagittal, axial, and coronal CBCT images of 200 patients (120 males, 80 females) were retrospectively scanned, and the MF locations of the teeth were separately evaluated for the right and left mandible. Results: As per the examined images, it was determined that the prevalence of MF between the first and second premolar teeth (right mandible: 47%, left mandibular: 52.5%, female: 49.4%, male 50%) is higher compared to other locations. Conclusion: This CBCT study enabled the identification of the MF location for the Turkish population. This data can contribute to dental procedure applications, such as mental nerve anesthesia, endodon- tics, and implantology.
Effect of different tea brands on color change of flowable resin composite
(2023) Özata, Merve Yeniçeri; Bakır, Elif Pınar; Ünal, Samican; Polat, Gamze; Akleyin, Ebru
Aims: This study aimed to evaluate the color change of a low-viscosity fluid resin composite (FRC) aged in 2 different brands of black tea and a Ceylon tea for three different periods (24 hours, 7 days, and 28 days). Methods: Twenty-eight Filtek Ultimate FRC samples with a diameter of 10 mm and a thickness of 2 mm were prepared and polymerized using polytetrafluoroethylene molds. All samples were numbered and polished, and initial color measurements were made. Samples were divided into three experimental groups and a control group (Distilled water) (n=7). All samples were kept in solutions for 24 hours, 7 days, and 28 days, and at the end of these periods, color measurements were made with a spectrophotometer. Data were recorded according to the CIE Lab system. ΔE was calculated by dividing the sum of squares of the difference of the last and first color measurement values by two. One-way ANOVA and Tukey test were used in the analysis of the data. Results: The Yellow Label black tea group caused significantly more color change in 24 hours than the Ceylon tea (p<0.05). Significantly more color changes were observed in the Altınbaş black tea group at 28 days compared to 24 hours (p<0.05). More color changes were observed in the experimental groups at 7 and 28 days compared to the control group (p<0.05). Conclusion: All the tea solutions made coloration on the FRC. The color change increased as the exposure time to the solution.
Effect of different tea brands on color change of flowable resin composite
(MediHealth Academy Yayıncılık, 2023) Özata, Merve Yeniçeri; Bakır, Elif Pınar; Ünal, Samican; Polat, Gamze; Akleyin, Ebru
Aims: This study aimed to evaluate the color change of a low-viscosity fluid resin composite (FRC) aged in 2 different brands of black tea and a Ceylon tea for three different periods (24 hours, 7 days, and 28 days). Methods: Twenty-eight Filtek Ultimate FRC samples with a diameter of 10 mm and a thickness of 2 mm were prepared and polymerized using polytetrafluoroethylene molds. All samples were numbered and polished, and initial color measurements were made. Samples were divided into three experimental groups and a control group (Distilled water) (n=7). All samples were kept in solutions for 24 hours, 7 days, and 28 days, and at the end of these periods, color measurements were made with a spectrophotometer. Data were recorded according to the CIE Lab system. ?E was calculated by dividing the sum of squares of the difference of the last and first color measurement values by two. One-way ANOVA and Tukey test were used in the analysis of the data. Results: The Yellow Label black tea group caused significantly more color change in 24 hours than the Ceylon tea (p
Effect of single serve sachet powder drinks on color stability of a nano-hybrid composite resin
(MediHealth Academy Yayıncılık, 2023) Akleyin, Ebru; Bakır, Elif Pınar; Ünal, Samican; Polat, Gamze; Özata, Merve Yeniçeri
Aim: Nano-filled composite resin materials used for aesthetic purposes have better mechanical, polish ability, and color stability properties compared to other composite resin types. The aim of this in vitro study was to evaluate the effect of 5 different single serve sachet powder drinks popular among adolescents in recent years on the color change of Nano hybrid composite resin material. Material and Method: In this study, Nano hybrid composite resin (Filtek Z550) and five different types of sachet drinks (cherry flavored powdered drink [Cherry-dp], instant sachet Turkish coffee [IS-Turkish-c], instant sachet filter coffee [IS-Filter-c], instant tea [I-tea], 3-in-1 granulated coffee [3-in-1 Granulated-c] and distilled water [DW]) were used. A total of 42 2×10 mm disc-shaped samples were prepared. The prepared samples were kept in DW in an oven at 37°C for 24 hours and the initial color measurements were made with a spectrophotometer (Vita Easy Shade Advance 4.0., Germany). The samples were divided into 6 groups (n=7) to be kept in 5 colorant solutions and DW (control group). Composite samples were kept in an oven at 37°C and the solutions were changed once a week. Color change was measured before and after 1, 7, and 28 days of immersion. Shapiro Wilk test was used to check whether the data conformed to normal distribution. The variables were analyzed with one-way analysis of variance ANOVA and post-hoc Tukey test (p<0.05). Results: After 28 days of immersion, IS-Turkish-c, IS-Filter-c, and I-tea led to statistically significant discoloration in composite resin (p<0.05). In contrast, no statistically significant difference in discoloration was observed after 24 hours and 7 days of immersion (p>0.05). Conclusion: The results obtained in the present study showed that the Nano hybrid composite material is sensitive to discoloration by long-term use of IS-Turkish-c, IS-Filter-c, and I-tea. It was thought that Nano hybrid composite should not be preferred especially in young people with high coffee and tea consumption or necessary warnings should be given if it is to be used.
Effect of smear layer removal using different chelators on push-out bond strength of bioceramic sealer
(Ariesdue Srl, 2023) Özata, Merve Yeniçeri; Kaya, Sadullah; Yolcu, Elif Nur; Okumuş, Tuğba Baz; Falakaloğlu, Seda
Aim: The aim of this study was to evaluate the effects of phytic acid (IP6), ethylenediaminetetraacetic acid (EDTA) and glycolic acid (GA) used as a final irrigation solution on the push-out bond strength (POBS) of a bioceramic-based root canal sealer. Methodology: The study included 60 single-root human mandibular premolars. After the teeth were decoronated, they were cleaned and shaped using the #25.08 Reciproc R25 single file system. Throughout preparation, each canal was irrigated using 20 ml 5.25% sodium hypochlorite (NaOCl). The teeth were divided into 4 group, each consisting of 15 (n=15) according to the final irrigation agent [1% IP6, 10% CI, 17% EDTA, and distilled water (DW)]. The final irrigation protocol consisted of application of 5 ml chelating agent for 1 minute followed by 5 ml 5.25% NaOCl application. Root canals were filled using Well Root ST canal sealer and Reciproc R25 gutta-percha, based on the single-cone technique. A 2-mm section was extracted from the middle part of the roots to test for POBS. Values were recorded in MPa and fracture types were examined. Groups were compared using one-way ANOVA (Welch’s) test. Results: The GA, EDTA, and IP6 groups showed no significant intergroup differences (p>0.05). EDTA and GA groups had significantly higher POBS than the DW group (p[removed]0.05). Conclusion: GA increased the bond strength of the bioceramic-based canal sealer to the root canal dentin at least as much as EDTA; IP6 exhibited similar strength to these chelators, it was not better than DW.
Evaluation of compatibility of file and gutta-percha cones in three different endodontic systems using scanning electron microscopy
(2023) Eskibağlar, Mehmet; Özata, Merve Yeniçeri; Ocak, Mevlüt Sinan; Öztekin, Faruk
Purpose: The aim of this study was to evaluate the matching properties of the gutta-percha (GP) cones and different file systems with variable tapers. Methods: Fifteen files and GP cones TruNatomy Prime (TRN-P), WaveOne Gold Primary (WOG-P), and Reciproc Blue (Rec-B R25) systems were examined under a scanning electron microscope. Diameter measurements of files and GP cones were made from D1 to D16 using AutoCAD software. Data were analyzed with independent samples t-tests. Statistical significance was determined as p< 0.05. Results: The diameters of the file and GP cones were within the acceptable tolerance range. The file diameter was larger than the GP diameter at all points of incompatibility in the TRN-P system (p< 0.05). In the WOG-P group, the file diameter was wider up to the D10 level, while the GP cone diameter was wider at the D11 point and beyond p<0.05. In the Rec-B group, the file diameter was wider up to the D6 level, while the GP cone diameter was wider at the D7 point and beyond p<0.05. Conclusion: Three file systems are largely incompatible with the GP cones. In the TRN file system, unlike the other two groups, the GP cone had a narrower diameter than the file at each point.
Evaluation of shaping performance and surface changes of two different minimally invasive shaping file systems used in resin blocks
(2023) Özata, Merve Yeniçeri; Falakaloğlu, Seda; Eskibağlar, Mehmet
Aims: This study aimed to compare the shaping ability of T-endo MIS and TruNatomy (TRN) file systems in J-shaped resin root canals and to investigate the deformation of the files after two acrylic block preparation and two sterilization cycles. Methods: Forty acrylic blocks were numbered, then four file groups (n=10) were established: T-endo MIS glider (15.04) + T-endo MIS Finisher (25.04) (first and second usage) and TRN Glider (17.02) + TRN Prime (26.04) (first and second usage). Preoperative and postoperative images after the root canal preparation of simulated acrylic blocks were taken for each sample, and superimposed. The amount of resin removed from both the inner and outer walls of the canal to the level of 3, 5, and 7 mm from the apical point was measured, and the amount of transportation was calculated. Additionally, the deformation of the files was examined under a scanning electron microscope before and after usage and sterilization process. Results: Tip deformation of TRN files increased with the number of uses (p=0.007). With the second use, the surface deformation of the MIS files increased (p=0.015). There was no difference in cutting-edge deformation in either file type according to the number of uses (p>0.05). There was no difference in transportation values between the MIS and TRN file systems at any level (p>0.05). The file systems did not show a significant difference in the amount of transportation between first and second use (p>0.05). Conclusion: When TRN (26.04) and MIS (25.04) NiTi rotary files were used twice on acrylic blocks, the amount of deformation did not differ. Both file types were similar in terms of transportation values.
Evaluation of shaping performance and surface changes of two different minimally invasive shaping file systems used in resin blocks
(MediHealth Academy Yayıncılık, 2023) Özata, Merve Yeniçeri; Falakaloğlu, Seda; Eskibağlar, Mehmet
Aims: This study aimed to compare the shaping ability of T-endo MIS and TruNatomy (TRN) file systems in J-shaped resin root canals and to investigate the deformation of the files after two acrylic block preparation and two sterilization cycles. Methods: Forty acrylic blocks were numbered, then four file groups (n=10) were established: T-endo MIS glider (15.04) + T-endo MIS Finisher (25.04) (first and second usage) and TRN Glider (17.02) + TRN Prime (26.04) (first and second usage). Preoperative and postoperative images after the root canal preparation of simulated acrylic blocks were taken for each sample, and superimposed. The amount of resin removed from both the inner and outer walls of the canal to the level of 3, 5, and 7 mm from the apical point was measured, and the amount of transportation was calculated. Additionally, the deformation of the files was examined under a scanning electron microscope before and after usage and sterilization process. Results: Tip deformation of TRN files increased with the number of uses (p=0.007). With the second use, the surface deformation of the MIS files increased (p=0.015). There was no difference in cutting-edge deformation in either file type according to the number of uses (p>0.05). There was no difference in transportation values between the MIS and TRN file systems at any level (p>0.05). The file systems did not show a significant difference in the amount of transportation between first and second use (p>0.05). Conclusion: When TRN (26.04) and MIS (25.04) NiTi rotary files were used twice on acrylic blocks, the amount of deformation did not differ. Both file types were similar in terms of transportation values.
Evaluation of stress distribution in maxillary central incisor restored with different post materials: A three-dimensional finite element analysis based on micro-CT data
(Uluslararası Diş Araştırmaları Birliği, 2021) Özata, Merve Yeniçeri; Adıgüzel, Özkan; Falakaloğlu, Seda
Aim: Post-core restorations have been developed to restore and re-functionalize endodontically treated teeth. Today, post-core materials used to show stress distribution similar to a solid tooth are still being researched. This study aimed to compare the von Mises stress (σvm) distributions created by the Zirconium post (ZP), Titanium post (TP), and Glass Fiber post (GFP) materials in the permanent maxillary central incisor using finite element stress analysis (FEA). Methodology: A permanent maxillary central incisor tooth scanned using microcomputed tomography (µCT) was reconstructed, and a three-dimensional model was created. To these models, ZP, TP, and GFP were applied. Composite resin was modeled as the core structure and ceramic crown as the superstructure. Using FEA, 100 N static force was applied in three directions with vertical (F1-0°), oblique (F2-45°), and horizontal (F3-90°) angles to the models whose restoration was completed. As a result of the applied forces, the stresses on the dentine model (Dm), post model (Pm), and the cement model in between the dentine and the post (Cm) were compared. Results: The maximum von Mises stress (σvm max) distribution under F1 for Dm was: ZP = 6,07888 MPa, TP = 6,35719 MPa and GFP = 6,81946 MPa. The σvm max distribution under the force F2 for Dm was: ZP = 26,6542 MPa, TP = 27,3694 MPa, and GFP = 28,4495 MPa. The σvm max distribution under the force F3 for Dm was: ZP = 34,7371 MPa, TP = 34,9828 MPa, and GFP = 35,287 MPa. The σvm max distribution under the force F1 for Pm was: ZP = 17,0361 MPa, TP = 13,1567 MPa, and GFP = 7,85452 MPa. The σvm max distribution under the force F2 for Pm was: ZP = 73,7999 MPa, TP = 52,0089 MPa, and GFP = 25,9903 MPa. The σvm max distribution under the force F3 for Pm was: ZP = 78,8934 MPa, TP = 55,0424 MPa, and GFP = 27,1787 MPa. The σvm max distribution under the force F1 for Cm was: ZP = 7,95074 MPa, TP = 6,66092 MPa, and GFP = 4,60832 MPa. The σvm max distribution under the force F2 for Cm was: ZP = 16,8296 MPa, TP = 16,8514 MPa, and GFP = 16,526 MPa. The σvm max distribution under the force F3 for Cm was: ZP = 17, 5577 MPa, TP = 16,891 MPa, and GFP = 16,5209 MPa. Conclusion: In all three forces, the highest σvm max was at ZP, and the least was at GFP. ZP and TP accumulated forces internally rather than transmitting them to the tooth tissue. GFP distributed the forces more homogeneously to the dentine.
Farklı ısıl işlem görmüş Ni-Ti aletlerin kanal yenileme işleminde kullanımında kök kanalında kalan dolgu maddesi ve apikalden taşırdığı debris miktarının karşılaştırılması: Bir in vitro çalışma
(Türkiye Klinikleri Yayınevi, 2022) Özata, Merve Yeniçeri; Falakaloğlu, Seda; Tartuk, Gizem Akın
Amaç: Bu çalışmanın amacı, farklı NiTi eğe sistemleri [Scope RS® Retreatment GOLD (SRG), WaveOne Gold (WOG) ve ProTaper Gold (PTG)] kullanılarak kök kanal dolgu maddelerinin uzaklaştırılması sırasında apikalden taşan debris ve kök kanal duvarlarında kalan dolgu maddesi miktarını değerlendirmektir. Gereç ve Yöntemler: Kırk beş adet çekilmiş alt çene küçük azı dişin kök kanalları genişletilmiş ve tek kon tekniği kullanılarak gütaperka ve AH Plus kanal patı ile doldurulmuştur. SRG, WOG ve PTG eğeleri ile kök dolgu materyalinin uzaklaştırılması için dişler rastgele 15’li 3 gruba ayrıldı. Uzaklaştırma işlemi sırasında apikalden taşan debris, önceden tartılmış Eppendorf tüplerinde toplandı ve elektronik bir terazi ile ölçüldü. Kök kanallarında kalan dolgu maddesi miktarı dijital analiz programı (Image J) kullanılarak değerlendirildi. Veriler tek yönlü ANOVA testi kullanılarak analiz edildi. Bulgular: WOG eğe sistemi, PTG eğe sistemine göre anlamlı derecede apikalden daha az debris taşırırken (p=0,020); SRG eğe sistemi ile diğer 2 eğe sistemi arasında anlamlı bir farklılık bulunmadı (p=0,426, p=0,647). Kalan dolgu maddesi miktarı açısından anlamlı bir farklılık bulunmadı (p=0,308). Sonuç: Tüm gruplar apikal foramenden debris taşırdı. PTG eğe sistemi, WOG ve SRG eğe sistemlerine oranla daha yüksek seviyelerde apikal ekstrüzyona sebep oldu. Ayrıca kalan kanal dolgusu miktarı açısından gruplar arasında anlamlı bir fark bulunmadı.
Influence of access cavity design on calcium hydroxide removal using different cleaning protocols: a confocal laser scanning microscopy study
(Korean Academy of Conservative Dentistry, 2023) Falakaloğlu, Seda; Özata, Merve Yeniçeri; Güneş, Betül; Silva, Emmanuel João Nogueira Leal; Gündoğar, Mustafa; Topal, Burcu Güçyetmez
Objectives: The purpose of this study was to evaluate the influence of endodontic access cavities design on the removal of calcium hydroxide medication of the apical third of mandibular incisor root canal walls and dentinal tubules with different cleaning protocols: EDDY sonic activation, Er,Cr:YSGG laser-activated irrigation, or conventional irrigation with IrriFlex. Materials and Methods: Seventy-eight extracted human mandibular incisors were assigned to 6 experimental groups (n = 13) according to the endodontic access cavity and cleaning protocol for calcium hydroxide removal: traditional access cavity (TradAC)/EDDY; ultraconservative access cavity performed in the incisal edge (UltraAC.Inc)/EDDY; TradAC/Er,Cr:YSGG; UltraAC. Inc/Er,Cr:YSGG; TradAC/IrriFlex; or UltraAC.Inc/IrriFlex. Confocal laser scanning microscopy images were used to measure the non-penetration percentage, maximum residual calcium hydroxide penetration depth, and penetration area at 2 and 4 mm from the apex. Data were statistically analyzed using Shapiro-Wilk and WRS2 package for 2-way comparison of non-normally distributed parameters (depth of penetration, area of penetration, and percentage of non-penetration) according to cavity and cleaning protocol with the significance level set at 5%. Results: The effect of cavity and cleaning protocol interactions on penetration depth, penetration area and non-penetration percentage was not found statistically significant at 2 and 4 mm levels (p > 0.05). Conclusions: The present study demonstrated that TradAC or UltraAC.Inc preparations with different cleaning protocols in extracted mandibular incisors did not influence the remaining calcium hydroxide at 2 and 4 mm from the apex.
İntrüze olmuş daimi kesici dişin ortodontik ekstrüzyonu ile birlikte endodontik tedavisi: Olgu sunumu
(Dicle Üniversitesi Diş Hekimliği Fakültesi, 2018) Özata, Merve Yeniçeri; Adıgüzel, Özkan; Coşar, Kazım Çağrı; Adıgüzel, Artemisa; Kaya, Sadullah
Lüksasyon tipi yaralanma şekillerinden biri olan intrüzyon dişin soket içine gömülmesi ve dişin oklüzyondan kısa görünmesi olarak tanımlanmaktadır. Bu olgu sunumunun amacı, travma sonucu intrüze olmuş üst daimi kesici dişin ortodontik ve endodontik olarak tedavisini sunmaktır. 33 yaşındaki erkek hasta üst santral kesici dişlerinde travma sonrası ağrı ve estetik şikayet nedeniyle kliniğimize başvurdu. Hastanın üst santral kesici dişlerine endodontik tedavi endikasyonu konuldu ve kök kanal tedavisine başlandı. 2 hafta sonra sol üst santral kesici dişi ekstrüze etmek için ortodontik tedaviye başlandı ve 9 ay süreyle ortodontik tedaviye devam edildi. Ortodontik tedavi tamamlandıktan sonra sol üst santral kesici dişe intrakoronal beyazlatma tedavisi, sonrasında daimi restorasyon yapıldı. Bu olgunun 1 yıllık takip kontrollerinde dişlerde klinik ve radyografik değerlendirmede herhangi bir patolojiye rastlanmadı.

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