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Öğe 3D Analysis of D-RaCe and Self-Adjusting File in Removing Filling Materials from Curved Root Canals Instrumented and Filled with Different Techniques(Hindawi Publishing Corp, 2014) Simsek, Neslihan; Ahmetoglu, Fuat; Keles, Ali; Bulut, Elcin Tekin; Er, KursatThe aim of this study was to compare the efficacy of D-RaCe files and a self-adjusting file (SAF) system in removing filling material from curved root canals instrumented and filled with different techniques by using microcomputed tomography (micro-CT). The mesial roots of 20 extracted mandibular first molars were used. Root canals (mesiobuccal and mesiolingual) were instrumented with SAF or Revo-S. The canals were then filled with gutta-percha and AH Plus sealer using cold lateral compaction or thermoplasticized injectable techniques. The root fillings were first removed with D-RaCe (Step 1), followed by Step 2, in which a SAF system was used to remove the residual fillings in all groups. Micro-CT scans were used to measure the volume of residual filling after root canal filling, reinstrumentation with D-RaCe (Step 1), and reinstrumentation with SAF (Step 2). Data were analyzed using Wilcoxon and Kruskal-Wallis tests. There were no statistically significant differences between filling techniques in the canals instrumented with SAF (P = 0.292) and Revo-S (P = 0.306). The amount of remaining filling material was similar in all groups (P = 0.363); all of the instrumentation techniques left filling residue inside the canals. However, the additional use of SAF was more effective than using D-RaCe alone.Öğe 3D Micro-CT Analysis of Void and Gap Formation in Curved Root Canals(Aves Press Ltd, 2017) Simsek, Neslihan; Keles, Ali; Ahmetoglu, Fuat; Akinci, Levent; Er, KursatObjective: This study used microcomputed tomography (micro-CT) to compare the volumes of voids and gaps in curved root canals instrumented and filled using various techniques. Methods: Twenty extracted mandibular first molars with two curved mesial root canals were used. Root canals were instrumented using a self-adjusting file (SAF) or Revo-S file system. For standardization, mesiobuccal canals were instrumented with SAF and mesiolingual canals were instrumented with Revo-S in each root. The canals were divided into four experimental groups (n=10 in each). The canals were then filled via cold lateral compaction (CLC) or a thermoplasticized injectable technique (TT) using gutta-percha and AH Plus root canal sealer. The roots were scanned with a micro-CT, and the volumes of the voids and gaps were calculated using three-dimensional (3D) micro-CT images. Data were analyzed using unpaired t- and Kruskal-Wallis tests. A value of P < 0.05 was considered significant. Results: None of the tested techniques provided void-or gap-free fillings. Nevertheless, the SAF showed more gap formation than the Revo-S, and TT showed higher gap formation in all experimental groups. These differences, however, were not statistically significant (p>0.05). Conclusion: The SAF and Revo-S rotary file systems yielded comparable results. No statistically significant difference was found between the results of the various instrumentation and filling techniques.Öğe Antibacterial and mechanical properties of propolis added to glass ionomer cement(E H Angle Education Research Foundation, Inc, 2014) Hatunoglu, Erdem; Ozturk, Firat; Bilenler, Tugca; Aksakalli, Sertac; Simsek, NeslihanObjective: To investigate whether adding ethanolic extracts of propolis (EEP) might influence the antibacterial and mechanical (shear-peel band strength [SPBS]) properties of conventional glass ionomer cement (GIC) used in orthodontic band cementation. Materials and Methods: The cement was divided into four groups: one using the original composition and three with 10%, 25%, and 50% EEP added to the liquid and then manipulated. An antimicrobial assay, broth-dilution method was used to determine the antibacterial capacity of the GIC containing EEP. Eighty teeth were used for the mechanical assay, and an lnstron testing machine was used to evaluate the SPBS. Kolmogorov-Smirnov and Kruskal-Wallis tests were used for statistical analyses. Results: GIC with the addition of 25% and 50% EEP activated inhibition of Streptococcus mutans (ATCC 25175) growth, but this effect did not occur in the group to which 10% EEP was added or in the control GIC group. There was no significant difference between the groups in terms of SPBS (P > .05). Conclusions: The addition of EEP may increase antibacterial properties without negatively modifying the mechanical properties of conventional GIC.Öğe Comparative evaluation of root canal preparations of maxillary first molars with self-adjusting file, reciproc single file, and revo-s rotary file: A micro-computed tomography study(Wiley-Hindawi, 2015) Ahmetoglu, Fuat; Keles, Ali; Simsek, Neslihan; Ocak, M. Sinan; Yologlu, SaimThis study was aimed to use micro-computed tomography (-CT) to evaluate the canal shaping properties of three nickel-titanium instruments, Self-Adjusting File (SAF), Reciproc, and Revo-S rotary file, in maxillary first molars. Thirty maxillary molars were scanned preoperatively by using micro-computed tomography (-CT) scans at 13,68m resolution. The teeth were randomly assigned to three groups (n=10). The root canals were shaped with SAF, Reciproc, and Revo-S, respectively. The shaped root canals were rescanned. Changes in canal volumes and surface areas were compared with preoperative values. The data were analyzed using Kruskal-Wallis and Conover's post hoc tests, with p<.05 denoting a statistically significant difference. Preoperatively canal volumes and surface area were statistically similar among the three groups (p>.05). There were statistically significant differences in all measures comparing preoperative and postoperative canal models (p=0.0001). These differences occurred after instrumentation among the three experimental groups showed no statistically significant difference for volume (p>.05). Surface area showed the similar activity in buccal canals in each of the three techniques whereas no statistically significant difference was detected among surface area, the SAF, and the Revo-S in the palatal (P) canal. Each of three shaping system showed the similar volume activity in all canals, but SAF and Revo-S provided more effectively root planning in comparison with Reciproc in P canal. SCANNING 37:218-225, 2015. (c) 2015 Wiley Periodicals, Inc.Öğe Comparison of different retreatment techniques and root canal sealers: a scanning electron microscopic study(Sociedade Brasileira De Pesquisa Odontologica, 2014) Simsek, Neslihan; Keles, Ali; Ahmetoglu, Fuat; Ocak, Mevlut Sinan; Yologlu, SaimThe aim of this study was to evaluate the effectiveness of two retreatment techniques, in terms of the operating time and scanning electron microscopy (SEM) results, in removing three different root canal sealers from root canals that were previously filled with gutta-percha. Sixty extracted single-rooted human premolars were divided into three groups and filled with iRoot SP, MM Seal, and AH Plus sealers, along with gutta-percha, through a lateral compaction technique. Root canal fillings of the samples were removed by ESI ultrasonic tips or R-Endo files. The time to reach the working length was recorded. Longitudinally sectioned samples were examined under SEM magnification. Each picture was evaluated in terms of the residual debris. Data were statistically analyzed with the Kruskall-Wallis test. No statistically significant differences were found in terms of operating time (p>0.05). Significant differences in the number of debris-free dentinal tubules were found among the root canal thirds, but this finding was not influenced by the experimental group (p<0.05). Resin sealer tags were observed inside the dentinal tubules in the MM Seal group. Under the conditions of this study, it may be established that there was no difference among the sealers and retreatment techniques.Öğe Demographic Characteristics and Ethical Issues of Disabled Patients who Applied at a Disabled Dental Care Center in Turkey(İnönü Üniversitesi Tıp Fakültesi Dergisi, 2013) Karatas, Mehmet; Simsek, Neslihan; Ak, MuharremAim: This research was aimed to evaluate the demographic characteristics of the disabled patients who applied to the Disabled Dental Care Center (DDCC) at Faculty of Dentistry of Inonu University and the ethical issues that the dentists were faced with. Material and Methods: The total number of disabled patients along with their genders and age intervals were determined from among the patients that applied to the Disabled Dental Care Center founded in September 2010 under the Inonu University Faculty of Dentistry. Results: Since people with disabilities cannot perform dental care by themselves, their frequency of experiencing oral-dental health problems is considerably higher than that of normal people. In addition, the facts that disabled patients can go to dental care clinics under difficult conditions in the accompaniment of their families and that the patient may sometimes not let the dentist to carry out the medical intervention or the difficulty of the intervention are other factors causing bad dental health in this group of patients. From September 2010 to April 2012, 105 disabled patients were admitted to DDCC at Inonu University, Faculty of Dentistry. Conclusion: The number of disabled patients admitted to the DDCC Faculty of Dentistry when compared to the number of disabled within Turkey, the number is significantly low. Mobilization, especially for persons with disabilities is an issue, such as difficulty of access to the dentist is major problem and result of a low number. The facts that the dentist will have to spare more time to disabled patients, the inadequacy of the monetary charge of the medical intervention, the requirement of a team to anaesthetize the patient are causes for the rejection of the patient by the dentist whereas the thought of the dentist that he/she could harm the patient in any way is the cause of various dilemmas.Öğe Determination of trace elements in kidneys, livers and brains of rats with sealer implants by ICP-MS(Taylor & Francis Ltd, 2017) Simsek, Neslihan; Akinci, Levent; Alan, Hilal; Gecor, Orhan; Ozan, UlkuFollowing root canal treatment, sealers may contact periapical tissue. The purpose of this study was to evaluate the systemic toxic effects of epoxy resin-based sealers (AH Plus and Obtuseal). Inductively coupled plasma-mass spectrometry (ICP-MS) was used to measure levels of trace elements (beryllium, magnesium, aluminium, calcium, chromium, arsenic and lead) in the brain, kidney and liver of rats. Twenty sterilized polyethylene tubes were then filled with AH Plus and Obtuseal and implanted into the dorsal subcutaneous tissue of 10 rats; three unoperated animals were used as a control group. After 45 days, the rats were sacrificed by cervical dislocation following anaesthesia, and brains, kidneys and livers were removed from all experimental animals. ICP-MS analysis was used to determine levels of trace elements. Data were analysed using Kruskal-Wallis and Connover post hoc tests. No significant differences were found in aluminium and calcium levels, but brains, kidneys and livers showed significantly higher amounts of magnesium and chromium than the corresponding controls. In the kidney and liver samples, arsenic levels were found to be higher than in the control group. Lead was detected at higher levels only in liver samples from the AH Plus group. Beryllium was not detected in any organ. It was concluded that AH Plus and Obtuseal release minimal quantities of trace elements when in contact with subcutaneous tissue, and further studies are needed to understand the systemic effects of these materials.Öğe Determination of trace elements in rat organs implanted with endodontic repair materials by ICP-MS(Springer, 2016) Simsek, Neslihan; Bulut, Eclin Tekin; Ahmetoglu, Fuat; Alan, HilalTo investigate the levels of seven elements using an inductively coupled plasma-mass spectrometry (ICP-MS) method in rat organs after the implantation of Micro Mega Mineral Trioxide Aggregate (MM-MTA), Bioaggregate (BA) and Biodentine (BD) materials. MM-MTA, BA and BD were implanted into the subcutaneous tissue of 15 Wistar albino rats; three control animals had no operation. After 45 days, the rats were sacrificed and their brains, kidneys and livers were removed. The ICP-MS analysis was used to determine trace elements. Data were analysed using the Kruskal-Wallis and Connover post hoc tests. There was no significant difference between the control groups and the MM-MTA, BA and BD groups according to the concentration of aluminum, calcium, arsenic and lead in the rats' organs. Beryllium was not detected in all tissue samples. Chromium levels of these materials were higher than the control group in brain and kidney samples (P = 0.038 and P = 0.037); magnesium levels were higher than the control group in kidney and liver samples (P = 0.030 and P = 0.008). MM-MTA, BA and BD were nontoxic according to trace element levels in brain, kidney and liver samples of rats. Further investigation is required to understand the systemic effects of these materials.Öğe The effects of root canal perforation repair materials on the bond strength of fiber posts(Sage Publications Ltd, 2021) Tavsan, Oguz; Simsek, NeslihanIntroduction: This study aimed to evaluate the effect of calcium hydroxide and bioceramics used in perforation repair on the bonding strength of fiber posts via a push-out test. Methodology: This study used 106 extracted single-rooted human mandibular premolar teeth. Root canal preparations were performed with a rotary file system and perforations were created in the middle third of each tooth. The samples were randomized into two main experimental groups, one with calcium hydroxide and one without. Each group had four subgroups in which different bioceramic cements were applied (n = 11) and a control group (n = 9). The root canals perforations were repaired using MTA, Biodentine, Bioaggregate, and Endosequence BC root repair material. A fiber post was applied to each tooth and a push-out test was performed. The samples were examined at 40x magnification with a digital microscope in order to identify fracture type. Results: Bonding strength was calculated in MPa. A statistical analysis showed that the calcium hydroxide had no effect on the bonding strength of the fiber posts. A comparison of the perforation repair materials revealed that Biodentine in the calcium hydroxide group and Bioaggregate in both groups decreased the bonding strength compared to the other materials (p < 0.05). The most common failure type was adhesive failure between the dentin and resin cement (38.16%). Conclusions: The use of different perforation repair materials can affect the bonding strength of fiber posts. Therefore, the choice of perforation repair material should be made on an individual basis.Öğe Efficacy of self-adjusting file and passive ultrasonic irrigation on removing calcium hydroxide from root canals(Japanese Soc Dental Materials Devices, 2013) Ahmetoglu, Fuat; Simsek, Neslihan; Keles, Ali; Ocak, Mevlut Sinan; Er, KursatThe aim of this study was to evaluate the efficiencies of the self-adjusting file (SAF) system, passive ultrasonic irrigation (PUT), and conventional irrigation (CI) in removing calcium hydroxide (CH) from root canals. Fifty-one mandibular premolars were used. After root canals were instrumented and filled with a CH paste, 45 teeth were randomly assigned to three experimental groups according to CH removal technique: SAF system, PUI, or CI. The remaining 6 teeth served as positive and negative controls. All samples were evaluated by scanning electron microscopy (SEM) and scored. None of the techniques removed CH completely. However, results at coronal, middle and apical thirds showed that PUT technique was significantly more effective than SAF and CI in removing CH dressing residues from root canal walls.Öğe Evaluation of Bacterial Microleakage of Root Canals Irrigated with Different Irrigation Solutions and KTP Laser System(Mary Ann Liebert, Inc, 2013) Simsek, Neslihan; Akpinar, Kerem Engin; Sumer, ZeynepObjective: The aim of this study was to evaluate bacterial microleakage of the root canals irrigated with different irrigation solutions and the potassium-titanyl-phosphate (KTP) laser system and filled with gutta-percha and AH26 root canal sealer. In addition, the effect of the irrigation solutions on dentin surface was evaluated with a scanning electron microscope (SEM). Background data: A few studies have reported that KTP laser has the capacity to remove the smear layer. Many researchers have demonstrated that propolis has a bactericidal effect. Both are important effects on root canal treatments. Materials and methods: One hundred and twenty single-root single-canal mandibular premolar teeth were used for this study. The root canals were prepared by Dentaport Root ZX and ProTaper rotary instruments with the crown-down technique. The specimens were randomly divided into five groups of 20 teeth each. Each group was irrigated with 17% ethylenediaminetetraacetic acid (EDTA), 20% propolis, 2.5% sodium hypochlorite (NaOCl), 2% chlorhexidine gluconate (CHX), and KTP laser, respectively. A total of 20 teeth were used as controls-10 positive controls and 10 negative controls-which were irrigated with distilled water. The root canals were filled with gutta-percha and AH-26. The external surfaces of specimens were covered with three layers of nail varnish except the apical third. The teeth were inserted into Eppendorf plastic tubes and suspended in glass bottles containing sterile broth. All specimens were inoculated every 5 days with Enterococcus faecalis. The contamination onset time was continuously recorded, as turbidity was the first indication of contamination in a period of 30 days. Results: All statistical analysis was performed using the SPSS for Windows version 15.0 software. A chi(2) test was computed and the statistical significance was set at p < 0.05. The controls behaved as expected. Conclusions: This study showed that different irrigation solutions and KTP laser allowed microleakage of E. faecalis.Öğe Evaluation of fracture strength of different restoration techniques applied to C-shaped 3D model teeth(Springer, 2022) Cetin, Melis Sila; Simsek, NeslihanThe aim of this study is to investigate the effect of different restoration methods applied to model teeth with a C-shaped root canal configuration on fracture strength. A total of 76 artificial tooth models were made using images of a molar tooth with a C-shaped root canal anatomy. The teeth were randomly divided into seven groups and different restorations, such as resin composite (2), bundled fiber post and resin composite (3), vertical fiber post and resin composite (4), horizontal fiber post and resin composite (5), woven fiber post and resin composite (6) and composite endocrown (7) were applied to the different groups except control group (1). The artificial teeth were embedded in acrylic blocks and subjected to fracture tests. The data were analyzed using one-way analysis of variance, Monte Carlo Pearson Chi-square, Pearson Chi-square, and Fisher's exact test (P < 0.05). All groups differed in terms of fracture strength (P = 0.001). The highest fracture strength observed in group 6, and there was a significant difference between group 6 and group 4 based on a least significant difference pairwise comparison test. In terms of fracture type, the highest reparability percentage (100%) observed in group 7. The fracture strength values of endocrown restorations and woven fiber-reinforced resin composite restorations were found to be as high as those of the intact models. Considering also fracture restorability, endocrown restorations may be recommended for teeth with C-shaped root canal anatomy. The usage of the 3D tooth models in the studies offer a valuable opportunity in terms of the standardization of the samples, particularly in teeth with anatomical variations. This study shows that using of this technology, homogeneous groups can be created and experimental studies can be improved.Öğe Heat conductive properties of set root canal sealers(Informa Healthcare, 2013) Keles, Ali; Ahmetoglu, Fuat; Simsek, Neslihan; Yalcin, Muhammet; Ocak, Mevlut SinanObjective. The aim of this study was to examine the thermal conductivity of five different root canal sealers in vitro. Materials and methods. Sealapex, AH Plus, AH 26, Endomethasone and RoekoSeal root canal sealers were examined. These materials were prepared in accordance with the manufacturer's instructions and applied to standard molds. Three samples of each material were prepared. The samples were kept for 5 days under 37 degrees C conditions. Measurements were taken using a heat conduction unit (P. A. Hilton Ltd. Stockbridge, Hants, UK). The thermal conductivity coefficient was calculated for each sample using the Fourier equation. Coefficients were analyzed statistically by the Kruskal-Wallis test. Results. Significant differences were found for thermal conductivity between some materials (p < 0.05). The conductivity coefficient of AH Plus was found to be higher than those of the other materials (p < 0.05). No statistically significant differences were found between AH 26 and RoekoSeal (p > 0.05) and the conductivity coefficients of these sealers were found to be lower than those of the other materials (p < 0.05). No statistically significant differences were found between Sealapex and Endomethasone (p > 0.05) and the conductivity coefficients of these sealers were found to be lower than that of AH Plus but higher than those of RoekoSeal and AH26 (p < 0.05). Conclusions. The results showed that root canal sealers functioned as thermal insulators and had different heat-conductive properties that depended on their composition.Öğe Hemisection: A modern endodontic approach as an alternative treatment for the extraction of molar teeth-case series(2020) Tavsan, Oguz; Ozturk, Hasan; Simsek, NeslihanHemisection is the separation of the whole tooth from the mesial to distal in the upper molars and premolars and from the buccal to lingual in the lower molars, and removal of the pathological root together with the crown. Hemisection is an appropriate treatment option when caries, resorption, iatrogenic complication or periodontal damage is limited to one root and the other root is relatively healthy. Hemisection of the affected tooth helps to preserve alveolar bone which surrounding the tooth structure and supports fixed dentures. Therefore, when a molar tooth should be extracted only because of damage at one root, hemisection or root amputation treatment alternatives should be kept in mind. This case series describes hemisection as a successful treatment method to recover teeth with iatrogenic complications and irretrievable root caries were limited to single root.Öğe Knowledge and clinical experiences of pediatric dentists and endodontists regarding regenerative endodontic procedures(Bayrakol Medical Publisher, 2022) Demir, Pinar; Demircan, Beril; Bulut, Elcin Tekin; Simsek, NeslihanAim: Pediatric dentists and endodontists perform regenerative endodontic procedures (REPs) on immature permanent teeth with necrotic pulp. The aim of this survey was to gather information about the knowledge and clinical experiences of pediatric dentists and endodontists regarding REPs. Material and Methods: A 23-question survey was formed and a participation link was sent via e-mail. The questions were prepared based on AAE guide. The survey consisted of various types of questions to obtain information about the physicians' age, gender, education information, previous regenerative endodontic therapy (RET) experiences and preferred REPs clinical protocols. Results: A total of 207 volunteers, 101 pediatric dentists and 106 endodontists participated in the study. RET was chosen by 68.1% of participants as their first choice in incisors, 50.2% in premolars and 40% in molars. The most important criterion is the stage of root development (44.8%) to decide between RET or apexification; 53.5% of the participants learned about REPs during residency training; 70.5% of the participants had applied REPs before (pediatric dentists (77.2%), endodontics (64.1%)). Most of the physicians stated that a candidate suitable for RET in the future would encourage them to practice. Discussion: The majority of pediatric dentists and endodontists do not adequately follow published standard clinical protocols. However, conducting studies under standard conditions is very important in evaluating the results of clinical protocols. This is very thought-provoking that even specialist physicians who can treat patients in this regard are confused. Therefore, physicians should be informed about this issue and a common protocol should be adopted in treatments.Öğe Micro-computed tomography analysis of shaping ability of nickel-titanium instruments activated by continuous rotation or adaptive motion(Wiley, 2024) Urgupluoglu, Sevde Nur; Akinci, Levent; Simsek, NeslihanThis study assessed the ability of Twisted File Adaptive (TFA), TruNatomy (TRN) and VDW.Rotate (VR) instruments activated by continuous rotation (CR) and adaptive motion (AM) to shape curved root canals. Thirty mandibular molars with two separate mesial canals 20 degrees-40 degrees curved were collected and scanned using micro-computed tomography (mu CT). The canals were then randomly assigned into six groups (n = 10): TRN, VR or TFA instruments activated by CR or AM. TRN groups 17.02, 20.04 and 26.04; VR groups 15.04, 20.05 and 25.06; TFA groups were shaped consecutively using 15K-file, 20.04 and 25.06. After they were shaped, the canals were scanned again. The volume of removed dentin, canal transportation and centring ratio were calculated mu CT images. All data were analysed using the Kruskal-Wallis test or one-way analysis of variance (p < 0.05). With both kinematics, the TRN instrument removed the least amount of dentin, the VR-CR and the TFA-AM removed the most (p < 0.05). The transportation and centring ratios among all groups were similar (p > 0.05). The volume of dentin removed, the diameter or design features of the instruments and different kinematics did not affect the centring ratio and the amount of transportation and remained within safe limits. All three instruments activated by either kinematics were found to have similar effectiveness in shaping curved root canals.Öğe Physical properties of MTA, BioAggregate and Biodentine in simulated conditions: A micro-CT analysis(Japanese Soc Dental Materials Devices, 2020) Akinci, Levent; Simsek, Neslihan; Aydinbelge, Hale A.The aim of this study was to evaluate the physical properties of calcium-silicate based cements as retrograde filling in different pH and blood conditions using micro-CT. Eighty-four teeth were obturated and after root-end resection, 3 mm-deep root-end cavity was ultrasonically prepared. The samples were divided into four test groups (n=21). Cements were freshly prepared and analyzed with micro-CT before and after exposed. The test groups were exposed for four days to environments containing acid, alkali, or blood. An acidic pH significantly reduced the volume of all materials after four days and differed from the other environments. Biodentine has the highest percentage of loss in volume and density after treatment in an acidic environment. Porosity formation in the acidic medium was observed in Biodentine amongst all materials. The three-dimensional structures of all materials changed after exposed to an acidic pH, while fewer changes were observed in the structures of materials treated with blood and alkali.Öğe Retreatment of flat-oval root canals with a self-adjusting file: An SEM study(Japanese Soc Dental Materials Devices, 2014) Keles, Ali; Simsek, Neslihan; Alcin, Hatice; Ahmetoglu, Fuat; Yologlu, SaimThis study evaluated the efficacy of the Self-Adjusting File (SAF) in removing the root filling remnants and smear layer left in oval shaped root canals after using R-Endo retreatment files, by using scanning electron microscopy (SEM). Forty eight maxillary premolars were prepared and the SAF was used in all of the teeth to remove debris and smear layer. Sixteen teeth were used as control and the other 32 teeth were obturated and randomly assigned to two groups according to the retreatment procedures: R-Endo retreatment files and R-Endo retreatment files+SAF. Then, all roots were split longitudinally for SEM evaluation. Using SEM pictures, the number of dentinal tubules and the surface area covered by filling remnants were evaluated. None of the techniques removed root filling remnants and smear layer completely. Additional use of SAF after the retreatment procedures may improve root canal cleanliness in the corona] and middle thirds of oval root canals.Öğe Unusual Root Canal Morphology of the Maxillary Second Molar: A Case Report(Hindawi Ltd, 2013) Simsek, Neslihan; Keles, Ali; Bulut, Elcin TekjnIntroduction. This clinical case report presents the successful endodontic treatment of a maxillary second molar that has a mandibular molar- like anatomy with no palatal root and with each of its roots containing two separate root canals. Cone-beam computed tomography (CBCT) was used to confirm this unusual anatomy. Methods. A 34-year-old male patient was referred to the Department of Endodontics at Inonu University's Faculty of Dentistry because of severe pain in his right maxillary second molar. Clinical and radiographic examinations identified unusual roots and root canals anatomy, and CBCT was planned in order to understand the nature of these variations. Cleaning and shaping procedures were performed using the crown down technique with Sybron Endo (Glendora, CA, USA) rotary instruments, and endodontic treatment was completed with gutta-percha cones and AH Plus resin sealers using the cold lateral compaction technique. Conclusions. The maxillary second molar exhibits aberrations and variations in terms of the numbers and configurations of its roots and root canals, and CBCT can be a useful imaging technique in endodontics.
