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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.
Assessment of apical periodontitis in relation to quality of root canal fillings and coronal restorations in a Turkish subpopulation: A retrospective cone-beam computed tomography study
(Wolters Kluwer Medknow Publications, 2020) Falakaloğlu, Seda; Belgin, Ceren Aktuna; Uygun, Latife Altınok; Adıgüzel, Özkan
Introduction: This study aims to investigate the prevalence of apical periodontitis (AP) and relate the quality of root canal fillings (RCFs) and coronal restorations (CRs) with using cone-beam computed tomography (CBCT) in a Turkish subpopulation. Materials and Methods: A total of 824 CBCT scans were performed at the Dicle University Faculty of Dentistry between January 2015 and December 2017. The age, sex, root canal-Treated teeth of each patient, quality of RCF and CR, and CBCT periapical index (CBCTPAI) scores of teeth were calculated and recorded. Data were statistically analyzed. Results: Among 333 patients, 152 (45.6%) patients were male and 181 (54.3%) were female. The mean age was 30.1 ± 5.3 years. The total number of endodontically treated teeth was 550, and 76.2% had AP. In 238 (43.3%) teeth with inadequate RCF, AP rate was 89.4%. There was a significant correlation between the density of the RCF and AP (P < 0.00). Inadequate restorations accounted for 177 teeth (32.2%), of which 10.1% (18) of the teeth were CBCTPAI 1. Of the 41 teeth with missing CR, 39 (95.1%) teeth showed signs of AP. A significant difference was found between CR and AP (P = 0.00). Conclusions: The RCF quality, adequate CR, and the type of CR are related to AP. .
Biyolojik dentin post kullanarak kök kanalının rekonstrüksiyonu: Üç boyutlu sonlu elemanlar analizi
(Dicle Üniversitesi, Diş Hekimliği Fakültesi, 2016) Falakaloğlu, Seda; Adıgüzel, Özkan
Endodontik tedavi görmüş dişler madde kaybı ve preparasyon sırasında yapılan işlemlerden dolayı dişin dentin tabakasında bulunan kollajen ağ fibrillerinin zayıflaması gibi sebepler ile vital dişlere göre daha kırılgan hale gelirler. Post-kor tedavi yöntemi ile aşırı kron harabiyeti olan endodontik tedavi görmüş dişlerin restorasyonu günümüzde tercih edilmektedir. Klinik kullanıma dayalı olarak zaman içerisinde çok sayıda post çeşidi geliştirilmiştir. Çekilmiş bir dişten elde edilecek biyolojik bir dentin post, materyal farklılığının yarattığı sorunları ortadan kaldıracaktır. Böylece kök kanal tedavisi uygulanan dişlerde görülen kırılma oranı azalacaktır. Biyolojik dentin postun paslanmaz çelik ve cam fiber postlarla sonlu elemanlar stres analizi kullanılarak karşılaştırılması amaçlanmıştır. Üst santral kesici dişe ait üç adet üç boyutlu model oluşturulmuştur. Bu modellere paslanmaz çelik post, cam fiber post ve biyolojik dentin post uygulanmıştır. Kor yapısı olarak kompozit, üst yapı olarak da seramik kron uygulanarak modelleme tamamlanmıştır. Restorasyonu tamamlanan modellere, sonlu elemanlar stres analiz metodu kullanılarak dişe dikey, yatay, 45o açı ile olmak üzere üç farklı yönde 100 N kuvvet uygulanmıştır. Elde edilen veriler değerlendirilerek, biyolojik dentin postun kullanılabilirliği belirlenmiştir. Uygulanan kuvvetler altında en fazla stres birikimi paslanmaz çelik postun kullanıldığı modellerde görülmüştür. Paslanmaz çelik post daha rijit yapıda olması nedeniyle gelen kuvvetleri diş dokusuna iletmek yerine yüzeyinde biriktirmiştir. Cam fiber post ve biyolojik dentin postun uygulandığı modellerde ise post materyalinin diş dokusu ile bir bütün olarak strese karşı cevap verdiği, diş ve post yüzeyinde aşırı stres birikimine neden olmadığı gözlenmiştir. Elde edilen sonuçlar, biyolojik dentin postun kanal tedavisi uygulanan dişlerde kırılmalara sebep olabilecek stres birikimlerini engellediğini göstermektedir. Ayrıca diş dokusu ile fiziksel ve biyolojik olarak uyumlu olan biyolojik dentin postun günümüzde kullanılan post çeşitlerine iyi bir alternatif olabileceği konusunda fikir elde edilmesini sağlamaktadır.
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 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 dentinal micro-cracks caused by the ProTaper Universal, ProTaper Next and Reciproc rotary file systems used in root canal preparation
(Uluslararası Diş Araştırmaları Birliği, 2018) Taç, Meltem Deveci; Kaya, Sadullah; Falakaloğlu, Seda
Aim: In this study, we compared the occurrence of dentinal micro-cracksafter use of the ProTaper Universal (Dentsply Maillefer, Ballaigues,Switzerland), ProTaper Next (Dentsply Maillefer), and Reciproc (VDW,Munich, Germany) nickel–titanium rotary file systems in root canalpreparation.Methodology: One hundred mandibular anterior teeth were divided intofive groups of 20 specimens each. Group 1 served as a control, with nointervention. In group 2, preparation was performed using the step-backtechnique and K files. In groups 3–5, root canal preparation was performedusing the ProTaper Universal, ProTaper Next, and Reciproc file systems,respectively. Following preparation, specimens were sectioned at 3, 6, and9 mm using a Minitom precision cut-off machine. The sections wereevaluated under a stereomicroscope. The following scoring system wasused to rate specimens: 1, no micro-crack; 2, incomplete micro-crack; and3, vertical root fracture. The results were statistically assessed (p≤0.05).Results: No micro-crack formation was observed in groups 1 and 2. Thehighest rate of micro-crack formation was observed in specimens preparedwith the ProTaper Universal file system (20%), followed by those preparedwith the Reciproc (11.7%) and ProTaper Next (6.7%) file systems. However,no significant difference was detected among groups (p>0.05). In thegroups ProTaper Universal and Reciproc files were used, 1 vertical rootfracture was found in 9 mm sections for each.Conclusions: Considering the limitations of in vitro studies, we canconclude that all rotary file systems used in this study led to dentinalmicro-crack formation in roots. The ProTaper Universal file system causedmore dentinal micro-cracking than did the ProTaper Next and Reciproc filesystems.
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.
Kök Kanal Şekillendirilmesinde Kullanılan Farklı Döner Eğe Sistemlerinin Apikalden Taşan Debris Miktarına Etkisinin Karşılaştırılması
(2021) Kaya, Sadullah; Falakaloğlu, Seda; Erkan, Seda
Bu in vitro çalışmanın amacı; Reciproc Blue, ProTaper Next ve ProTaper Universal eğe sistemlerini kullanarak, apikalden taşan debris miktarının karşılaştırılmasıdır.Çalışmamızda 60 adet alt premolar diş; Reciproc Blue (R40; VDW, Munich, Germany), ProTaper Next (X4; Dentsply Maillefer, Ballaigues, Switzerland) ve ProTaper Universal (F4; Dentsply Maillefer, Ballaigues, Switzerland) Nikel-Titanyum (Ni-Ti) eğe sistemleri ile şekillendirilmek üzere üç ayrı deney grubuna ayrıldı (n=20). Şekillendirme işlemlerinde ve son irrigasyonunda enjektör pompası kullanılarak toplam 10 ml distile su ile irrigasyon yapıldı. Bürklein ve arkadaşlarının kullandığı düzenek oluşturularak apikalden taşan debris, ağırlıkları önceden elektronik tartıyla belirlenen eppendorf tüpleri içerisinde biriktirildi. Sonrasında net debris ölçümü için eppendorf tüpleri 70°C ve 5 gün boyunca etüvde bekletildi. Apikalden taşan debris miktarı, debris içeren eppendorf tüplerin ağırlığından boş eppendorf tüplerin ağırlığı çıkarılarak hesaplandı.Gruplar arasındaki farklılıklar incelenirken, ikili gruplarda Mann Whitney U, ikiden fazla gruplarda Kruskal Wallis-H testlerinden yararlanıldı. Kruskal Wallis-H testinde anlamlı farklılıkların görülmesi durumunda Post-Hoc çoklu karşılaştırma testi ile aralarında farklılık olan gruplar belirlendi. Sonuçlar p<0,05 düzeyinde anlamlı kabul edildi. Taşan debris ağırlıkları bakımından gruplar arasında istatistiksel olarak anlamlı farklılık bulundu (p=0,025). Şekillendirme sistemlerine göre taşan debris miktarı bakımından gruplar arası ikili karşılaştırma sonuçlarına göre; ProTaper Universal’ın diğer sistemler ile aralarında istatistiksel olarak anlamlı farklılık bulunmamıştır. ProTaper Next ile Reciproc Blue grupları arasındaki karşılaştırmada ProTaper Next, Reciproc Blue’ye göre anlamlı derecede daha az debris taşırdığı görülmüştür (p=0,007).Bu in vitro çalışmada kullanılan tüm eğe sistemlerinin apikalden debris taşkınlığına neden olduğu tespit edilmiştir.
Kök kanallarından kalsiyum hidroksidin uzaklaştırılmasında endodontik bir şelatör olarak fitik asidin etkinliği: Bir in vitro çalışma
(Türkiye Klinikleri Yayınevi, 2022) Falakaloğlu, Seda; Özata, Merve Yeniçeri; Şen, Bilge Hakan; Avcı, Güliz Rana Tellioğlu; Tartuk, Gizem Akın
Amaç: Bu çalışmanın amacı, kök kanallarından kalsiyum hidroksidin (KH) uzaklaştırılmasında farklı irrigasyon solüsyonu kombinasyonlarının etkinliğini karşılaştırmaktır. Gereç ve Yöntemler: Seksen sekiz adet alt premolar dişin kök kanalları genişletildi ve kökler, diş uzun aksı boyunca ikiye ayrıldı. Kök kanal yüzeyinin apikal 1/3’lük kısmında standart bir yapay oluk hazırlandı. Oluklar, KH ile doldurulduktan sonra kök yarıları birleştirildi. Ardından kanallar tamamen KH ile dolduruldu. Örnekler, 4 deney (n=20) ve 2 kontrol grubuna (n=4) ayrıldı. Gruplarda; Grup 1: %1 fitik asit (IP6), Grup 2: %1 IP6 ve devamında %5 sodyum hipoklorit (NaOCl), Grup 3: %17 etilendiamintetraasetik asit (EDTA) ve Grup 4: %17 EDTA ve devamında %5 NaOCl olacak şekilde 30-G IrriFlex irrigasyon iğnesi ile irrigasyon yapıldı. Toplam irrigasyon solüsyonlarının hacmi, her grupta 20 mL olacak şekilde belirlendi. Köklerin tekrar ayrılmasından sonra yapay oluklarda kalan KH miktarı, bir stereo mikroskop (x40) altında değerlendirildi. Veriler, daha sonra Shapiro-Wilk ve Kruskal-Wallis H testleri kullanılarak istatistiksel olarak analiz edildi (p<0,05). Bulgular: Test edilen irrigasyon solüsyonlarının hiçbiri, KH’yi oluklardan tamamen uzaklaştıramadı. Gruplar arasında istatistiksel açıdan anlamlı bir fark yoktu (p>0,05). Sonuç: EDTA, IP6 ve bunların NaOCl kombinasyonları, KH uzaklaştırma konusunda tam bir başarı sağlamadı. Bu çalışmanın bulgularına göre KH uzaklaştırmada %1 IP6’nın, EDTA’ya alternatif bir şelasyon ajanı olabileceği görüldü.
Maxillary cortical bone thickness in a south- eastern anatolian population: A cone-beam computed tomography study
(International Scientific Information, Inc., 2017) Adıgüzel, Özkan; Belgin, Ceren Aktuna; Falakaloğlu, Seda; Cangül, Suzan; Akkuş, Zeki
Background: The aim of this study was to measure the distance between the maxillary premolar and molar teeth apices to the buccal cortical bone and evaluate differences in gender and age group, using cone beam computed tomography (CBCT). Material/Methods: This retrospective study comprised of 451 premolar and molar teeth of one hundred and thirteen patients who were admitted to Dicle University, Faculty of Dentistry, Department of Dentomaxillofacial Radiology for different reasons. Data were analyzed using Student’s t-tests and Tukey HSD tests. Results: There was significant difference in buccal bone thickness by gender (p<0.05). The thinnest point of the maxillary buccal bone was measured in women as 2.11 mm and in men as 2.02 mm in the first premolar teeth. The thickest point of maxillary buccal bone was measured in women as 9.87 mm and in men 10.71 mm palatinal root of the first molar. A comparison of buccal bone thickness between age showed a statistically significant difference at the distobuccal and palatinal roots of the first molar, at the mesiobuccal root of the second molar (p<0.05). Conclusions: The measurements of maxillar buccal bone thickness using CBCT for various dental procedures especially in endodontic surgery, orthodontic mini implant treatment, dental implant procedures, and healing after tooth extraction that are important knowledge.
Micro-shear bond strength of different calcium silicate materials to bulk-fill composite
(PeerJ Inc., 2023) Falakaloğlu, Seda; Özata, Merve Yeniçeri; Plotino, Gianluca
Introduction: This study aimed to compare the micro-shear bond strength (µSBS) performances of two resin-based calcium silicate-based cement (CSC) (TheraCal PT and TheraCal LC), Biodentine, and two modified-MTA CSC materials (NeoMTA 2 and BioMTA+) to bulk-fill restorative material. Materials and Methods: Fifty 3D printed cylindrical resin blocks with a central hole were used (2 mm in depth and 4 mm in diameter). CSCs were placed in the holes (per each group n = 10) and incubated for 24 h. Cylindrical polyethylene molds (2 mm in height and diameter) were used to place the bulk-fill restorative materials on the CSCs and polymerize for 20 s. Then, all specimens were incubated for 24 h at 37 °C at a humidity of 100%. Specimen’s µSBSs were determined with a universal testing machine. Data were analyzed with one-way ANOVA (Welch) and Tamhane test. Results: Statistically higher µSBS was found for TheraCal PT (29.91 ± 6.13 MPa) (p < 0.05) respect to all the other materials tested. TheraCal LC (20.23 ± 6.32 MPa) (p > 0.05) reported higher µSBS than NeoMTA 2 (11.49 ± 5.78 MPa) and BioMTA+ (6.45 ± 1.89 MPa) (p < 0.05). There was no statistical difference among TheraCal LC, NeoMTA 2 and Biodentine (15.23 ± 7.37 MPa) and between NeoMTA 2 and BioMTA+ (p > 0.05). Conclusion: Choosing TheraCal PT as the pulp capping material may increase the adhesion and µSBS to the bulk-fill composite superstructure and sealing ability.
The micro-shear bond strength of new endodontic tricalcium silicate-based putty: An in vitro study
(John Wiley and Sons Inc, 2023) Özata, Merve Yeniçeri; Falakaloğlu, Seda; Plotino, Gianluca; Adıgüzel, Özkan
This study aimed to compare in vitro micro-shear bond strength (μSBS) of three different endodontic tricalcium silicate-based materials in contact with a bulk-fill resin-based composite. Thirty cylindrical resin blocks with a hole in the centre (2 mm in depth and 4 mm in diameter) were manufactured with a 3D printer and divided into three groups (n = 10), depending on the calcium silicate cement used: light curing TheraCal LC (Bisco, Schaumburg, IL, USA), liquid–powder NeoMTA 2 (NuSmile Avalon Biomed, Bradenton, FL, USA) and putty NeoPutty (NuSmile, Houston, TX, USA). Each sample was stored for 24 h at 37°C and 100% humidity. Then, after adhesive placement, the restorative material Filtek bulk-fill (3 M ESPE, St. Paul, MN, USA) was placed over the capping material using cylindrical plastic capsules (2 mm height and 2 mm) and polymerised for 20 s. Specimens were then tested in a universal testing machine for the compression load resulting in the μSBS. The data were compared with the one-way ANOVA (Welch) and the Tamhane test. The mean value was significantly higher in the TheraCal LC group than in the other two groups (p < 0.05). There was no significant difference between NeoMTA 2 and NeoPutty groups (p > 0.05). The majority of failure modes for all groups were cohesive within biomaterial. Using TheraCal LC in the pulp capping procedure can result in higher bond strength values to the tested bulk-fill resin-based composite than NeoMTA 2 and NeoPutty.

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