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    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.
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    Apikal rezeksiyon uygulanmış alt anterior dişlerde retreatment ve apeksifikasyon: Bir olgu sunumu
    (Dicle Üniversitesi, Diş Hekimliği Fakültesi, 2022) Durak, Gamze; Kaya, Sadullah
    Bu olgu sunumunun amacı; apikal rezeksiyon uygulanmış ancak apikal bölgede iyileşme sağlanamamış ve semptomları devam eden 20 yaşındaki kadın hastanın 41 ve 42 numaralı dişlerinin apeksifikasyonu ve tedavi sürecinin sunulmasıdır. Kliniğimize başvuran hastadan alınan anamnez ve muayene sonucu mandibular anterior bölgede daha önce kanal tedavisi ve apikal cerrahi yapıldığı ancak hastada perküsyon duyarlılığı olduğu öğrenildi. Hasta bilgilendirilip eski restorasyonun kaldırılmasını takiben kanal söküm işlemi yapıldı. İkinci seans, apikal bölgede sert doku bariyeri mineral tiroksit agregat (MTA) kullanılarak ortograt yöntemle oluşturuldu. MTA uygulanmasını takiben iki gün sonra hastanın kanal tedavisi ve ilgili dişlerin kompozit restorasyonu yapıldı. Takip eden süreçte dişlerin klinik olarak asemptomatik olduğu gözlemlenmiştir.
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    Clinical presentation and management of ectodermal dysplasia
    (2006) Kaya, Sadullah; Zortuk, Mustafa; Adıgüzel, Özkan; Başkan, Zelal; Tümen, Emin; 0000-0001-6089-3013
    This article reviewed the clinical and radiologic aspects of ectodermal dysplasia as well as the dental treatment, and describe the oral rehabilitation. Patients with this disease often need complex dental treatment. The options for a definitive treatment plan may include fixed, removable, or implant-supported prostheses, singly or in combination. This clinical report describes the diagnosis and treatment of ectodermal dysplasia in the six patients (three males and three females, aged 9 to 22 years) with ectodermal dysplasia. Ectodermal dysplasia patients had a clinical examination and they had undergone radiographic and Steiner's analysis, and respiratory capability test before being assessment and treated. The prosthodontic treatment included interim removable partial dentures fabricated to establish an acceptable therapeutic occlusal vertical dimension, followed by definitive overlay removable partial dentures. As a result comprehensive and multidisciplinary team approach necessary to these patients for improve their dental, masticatory, growing, and orthognathic conditions.
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    Comparing the effect of Reciproc R25 rotary file system on the amount of apical extrusion of debris via using it with different reciprocal angles
    (Uluslararası Diş Araştırmaları Birliği, 2021) Çelik, Nezif; Kaya, Sadullah; Adıgüzel, Özkan
    Aim: To compare the amount of apically extruded debris using Reciproc (R25) file with different reciprocal angles. Methodology: In this research, 60 extracted mandibular premolars with a single root, a single canal, and a single apical foramen were used. Specimens, the working length of which was determined by a stainless steel 10-K file, were randomly distributed into three experimental groups (n = 20) as follows: Group 1 150° counterclockwise (CCW)-30° clockwise (CW); Group 2 180° CCW-60° CW; and Group 3 210° CCW-90° CW. For the irrigation, 10 mL of distilled water was administered via a syringe pump. The extruded debris was collected into Eppendorf tubes tared in advance. The distribution of data was analyzed using a Shapiro-Wilk test. A KruskalWallis H test was used for statistical analysis. The null hypothesis is no significant difference between the groups in terms of the amount of apical extrusion of debris. Results: There was no statistically significant difference between the groups with regard to amount of apical extrusion of debris (p>0.05). Nevertheless, the highest average amount of extrusion of debris was detected in group 1 and the lowest in group 3. Conclusion: According to the results of this study, different reciprocal angles during chemomechanical preparation have no significant effect on the amount of apical extrusion of debris.
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    Comparison of Apical Microleakage of Dual-Curing Resin Cements with Fluid-Filtration and Dye Extraction Techniques
    (Int Scientific Literature, Inc, 2015) Kaya, Sadullah; Ozer, Senem Yigit; Adiguzel, Ozkan; Orucoglu, Hasan; Deger, Yalcin; Tumen, Emin Caner; Uysal, Ibrahim
    Background: Endodontically treated teeth with excessive loss of tooth structure are frequently restored using fiber posts. In this in vitro study, the apical leakage of self-and dual-activated curing modes for dual-curing resins cementing a translucent fiber post was evaluated using computerized fluid filtration meter and dye extraction method. Material/Methods: One hundred and four extracted human maxillary incisors with single root and canal were used. Experimental samples embedded in a closed system were divided into 4 groups (n=20) according to 2 dual-curing luting systems, with 2 different curing modes (either with self-or light-activation): (1) Panavia F 2.0 with self-cure, (2) Panavia F 2.0 with light-activation, (3) Clearfill SA with self-cure, and (4) Clearfill SA with light activation. Twenty-four teeth served as negative and positive controls. Translucent fiber posts were luted in the roots except in the control groups. Results: Statistical analysis indicated no significant difference in leakage among groups (p>0.05) with 4.12x10(-4) (Panavia self-cure), 4.55x10(-4) (Clearfill SA self-cure), 5.17x10(-4) (Panavia dual-cure), and 5.59x10(-4) (Clearfill SA dual-cure) in fluid-filtration method. Absorbance values for dye-extraction method were 266 nanometer (nm) (Panavia self-cure), 268 nm (Clearfill SA self-cure), 270 nm (Panavia dual-cure), and 271 nm (Clearfill SA dual-cure), in which difference among the groups were not statistically significant (p>0.05). When comparing the leakage, assessment methods results showed no statistically significant difference between the tested evaluation techniques (p>0.05). Conclusions: Light-and self-activation curing modes of Panavia F 2.0 and Clearfill SA perform similar to each other in a closed system.
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    Comparison of cyclic fatigue of a reciprocating file system at different angles of rotation
    (Uluslararası Diş Araştırmaları Birliği, 2021) Akay, Ahmet; Adıgüzel, Özkan; Kaya, Sadullah; Akay, Seda Erkan
    Aim: The purpose of this in vitro study is to compare the cyclic fatigue resistance of Reciproc Nickel-Titanium (Ni-Ti) rotary files (VDW GmbH, Munich, Germany) while operating root canals using in three different reciprocal angles. Methodology: Forty-five Reciproc R25 root canal files were tested using artificial canals with a 60° angle of curvature, 5 mm curvature radius, and 1.5 mm diameter carved into a stainless steel block. The Ni-Ti files were checked with a stereomicroscope and then randomly separated into three groups. Group 1 consisted of reciprocal angles CCW 150°— CW 30°, Group 2 consisted of CCW 180°—CW 60°, and Group 3 consisted of CCW 210°— CW 90°. The duration of the cyclic fatigue being measured, elapsed time until a file fractured was determined with a chronometer. The lengths of the fractured pieces were measured with a digital caliper. After the cyclic fatigue test, two samples from each group were examined with a Scanning Electron Microscope (SEM) to determine the signs of cyclic fatigue. Results: One-way analysis of variance (ANOVA) was applied to the normally distributed groups (p<0,05). Since there was a significant statistical difference of file’s cyclic fatigue resistance (p=0,001) between the groups, Tukey’s honestly significant difference (HSD) post hoc pairwise comparison tests were used for determining to between groups. While there were statistically significant differences between Group 1 and Group 2 (p=0,001), and between Group 1 and Group 3 (p=0,001), there was no significant difference between Group 2 and Group 3 (p=0,376). Group 1 displayed the highest resistance to cyclic fatigue. There were no statistically significant differences between the lengths of the fractured files within the three groups according to the one-way analysis of variance (p=0,847). Conclusion: In our study, it was observed that the reciprocal angles of CCW 150°— CW 30°, which were also suggested by the file manufacturer firms, had the highest fracture resistance against cyclic fatigue.
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    The comparison of cyclic fatigue resistance of two different reciprocal files according to different access angles into the root canal
    (Uluslararası Diş Araştırmaları Birliği, 2021) Dündar, Mehmet; Adıgüzel, Özkan; Kaya, Sadullah
    Aim: Root canal preparation is one of the most important steps of root canal treatment. Preparation procedure includes disinfection and shaping protocols. Ni-Ti rotary file systems are usually used for shaping. The biggest disadvantage of the usage of Ni-Ti rotary file systems is that the file gets broken during the treatment. There are many reasons for the breakage of files. One of the reasons may be the increase in the access angle. The purpose of this study is to compare the cyclic fatigue of reciprocating Reciproc and WaveOne Gold rotary systems according to different angles of accessing the root canal of Ni-Ti files. Methodology: In our study, 90 root canal files were used, 45 of which is Reciproc R25 (VDW GmbH, Munich, Germany) and the other 45 of which is WaveOne Gold Primary 25/07 (Dentsply, Maillefer, Ballaigues, Switzerland). Specially designed and manufactured stainless steel artificial roots whose curvature angle is 60° and curvature radius is 5 mm, which replicates the clinical conditions, were arranged. By enabling the files access the roots at 0°- 15°- 30° degrees, the lap numbers that they do till they break due to cyclic fatigue were examined. Results: When looking at the lap numbers that the Reciproc and WaveOne Gold root canal files do till they break, at accessing the roots at the same angles WaveOne Gold root canal file makes more lap numbers at all angles when compared with the Reciproc root canal file. Significant results were found when the groups were compared within one another and between groups and among all numeric data in the statistical analysis performed. It was also found that WaveOne Gold root canal file had more cyclic fatigue resistance. When the groups were compared within one another, it was found that the increase in the root access angle decreases the cyclic fatigue resistance of the files (p<0.05). No significant difference was found in the statistical analysis for comparison of the length of the broken file pieces (p=0.01). It was analyzed that when the broken files were examined via scanning electron microscope, file breakages occurred due to cyclic fatigue. Conclusion: Not only do the design features and production technology affect the breakage resistance due to cyclic fatigue of the root canal, the access angle to the roots affects the cyclic fatigue of the root canal files, as well.
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    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.
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    Comparison of sealing efficiency of mineral trioxide aggregate and biodentine used in perforation repair in acidic and neutral environments- an in-vitro study
    (Premchand Shantidevi Research Foundation, 2021) Yüzer, Güney Mustafa; Kaya, Sadullah
    Introduction: Furcation perforation is one of the complications that occur during endodontic treatment due to anatomical differences or iatrogenic causes. Repairing the perforation with a bio-compatible material eliminates the connection with the gingival sulcus and positively affects the prognosis. The sealing ability of the repair materials is very important and is affected by the conditions of the environment in which they are applied. Aim: To compare the sealing efficiency of Mineral Trioxide Aggregate (MTA) (Angelus, Londrina, PR, Brazil) and Biodentine (Septodont, Saint Maur des Fosses, France) materials used in the repair of furcation perforations in acidic and neutral environments. Materials and Methods: This in-vitro experimental study was carried out in the Department of Endodontics at Dicle University Faculty of Dentistry, Diyarbakir, Turkiye and Dicle University Science and Technology Application and Research Center from 10th June 2020 to 22nd July 2020. A total of 96 mandibular molars were used in the study. The specimens were randomly divided into two equal groups (n=48). When the perforations were repaired with MTA and Biodentine materials, each group was divided into four subgroups (n=12). These subgroups were kept in Phosphate-Buffered Saline (PBS) and Acetic Acid (AA) solutions for different periods of time from four or 34 days, and all groups were immersed in methylene blue solution. The dye penetration level of the divided sections was examined under a stereomicroscope (Leica, Wetzlar, Germany). Microleakage data of all groups were statistically analysed using Kolmogorov Smirnov, Shapiro Wilk's and Mann-Whitney U Test. Statistical significance was set at 0.05, it was stated that there was a significant difference when p-value <0.05. Results: The short-term (4 days) microleakage level of biodentine material in the AA environment was significantly lower than that of MTA material (p-value=0.005). There was no statistically significant difference between the materials in terms of long-term (34 days) microleakage levels in the AA environment (p-value>0.05). The long-term microleakage level in PBS environment of biodentine material was significantly lower than that of the AA environment (p-value=0.008). Conclusion: Lower microleakage levels were observed in the neutral environment than the acid environment with both MTA and biodentine during both holding periods.
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    Comparison of the Accuracies of CBCT, Radiography, and Four Electronic Apex Locators in Working Length Determination
    (Univ Indonesia, 2022) Ozata, Merve Yeniceri; Falakaloglu, Seda; Kaya, Sadullah
    Background: One of the significant stages during endodontic procedures is determining the correct working length (WL). This study aimed to evaluate the accuracy of four electronic apex locators (EALs) (Root ZX mini, Raypex 6, Propex Pixi, and E-Pex Pro) and cone-beam computed tomography (CBCT) and radiographic measurement in determining the actual WL (A-WL). Methods: Thirty extracted single- root mandibular premolars were selected and flattened at the crown. The WL was determined by advancing the #15 K file until its tip was visible from the apical, and the A-WL was established by subtracting 0.5 mm from this length. The WL was also determined using periapical radiography, four EALs, and CBCT. The differences in all measurements were compared with the A-WL. The data were statistically analyzed using one-way analysis of variance (Welch) and Tamhane's test. The significance level was set at p < 0.05. Results: Compared with other measurement methods, CBCT gave shorter values than the A-WL, and this finding was statistically significant compared with those of the PR and Propex Pixi groups (p = 0.009) (p = 0.024). No significant difference was observed between the other groups (p > 0.05) except the CBCT group (p < 0.05). Conclusions: Root ZX mini and Raypex 6 made measurements close to the A-WL.
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    Comparison of the accuracy of different electronic apex locators used in working length determination via changing of initial cleaning solutions
    (Uluslararası Diş Araştırmaları Birliği, 2021) Avcı, Güliz Rana Tellioğlu; Kaya, Sadullah
    Aim: The aim of this study is to compare the accuracy of the different new generation electronic apex locators by changing the initial cleaning solutions (NaOCl vs. EDTA). Methodology: Eighty mandibular premolar teeth were used. Radiographs were obtained from the mesio-distal, and bucco-lingual angles for all teeth, and teeth with suspected external or internal root resorption and/or calcified canals were not included in the study. The true lengths of the root canals were determined with a precision of 0.01 mm with a stereomicroscope at x5 magnification by placing a #20 K-type canal file into the root canal. The samples were then embedded in freshly mixed alginate blocks up to the cemento-enamel junction. The coronal 1/3 was pre-enlarged with a Protaper SX (VDW, Munich, Germany), instrument. Root ZX Mini (J. Morita, Tokyo, Japan), Raypex 6 (VDW, Munich, Germany), Propex Pixi (Dentsply Maillefer, Ballaigues, Switzerland), and E-Pex Pro (Changzhou Sifary Medical Technology Co., Ltd, Jiangsu, China) electronic apex locators were used, and measurements were made by changing the initial solutions (NaOCl vs. EDTA). Distilled water was used between application of 5.25% NaOCl and 17% EDTA to prevent chemical interactions. Three measurements were taken for each tooth, and the average of these three measurements was taken as reference. The data obtained in this study were analyzed. Results: There were no statistically significant differences between the solutions in terms of the measurement values and actual length values found by each device (p>0.05). Although there were no statistically significant differences, the deviation from the actual measurement was greater when EDTA solution was used than when NaOCl solution was used. In addition, although the difference was not found to be statistically significant, the deviation from the actual measurement was found to be highest when the Root ZX mini device was used with NaOCl and EDTA solution. Conclusion: The results of this study showed that the difference in the initial washing solutions did not affect the electronic apex locator (EAL) devices in making measurements close to the true length.
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    Comparison of the accuracy of three different electronic apex locators used in root canals enlarged in different apical diameters
    (Uluslararası Diş Araştırmaları Birliği, 2021) Öz, Hasan; Adıgüzel, Özkan; Kaya, Sadullah
    Aim: This study aimed to evaluate the accuracy of three apex locators in enlarged teeth with different apical diameters using files that are compatible and incompatible with the apical diameters. Methodology: Sixty lower premolars were used in this study. The actual canal length was determined with a stereo microscope, and the teeth were divided into three different groups (G25, G40 and G50). The teeth in G25, G40 and G50 were enlarged in actual canal length with apical diameters of 0.25, 0.40- and 0.50-mm using hand files and Reciproc R25, R40, and R50, respectively. In the electronic measurements, a #15 hand file was used in each group, and #25, #40 and #50 hand files that were compatible with the apical diameters of the teeth in the groups were used. An alginate model was created with enlarged teeth. The electronic working length was determined for each tooth using Root ZX Mini, Raypex 6, and Propex Pixi electronic apex locators (EALs). Results: Electronic measurement results that were shorter by 0.50 mm or longer by 0.05 mm than the actual length were considered unsuccessful; otherwise, they were deemed successful. Analysis of variance was used to evaluate the accuracy of the EALs with different files in the same apical diameter. For the different apical diameters, the chi-square exact test was used to evaluate the accuracy effect of using files that were incompatible with each apical diameter. The level of significance was p > 0.05. In all the groups, the measured lengths were closer to the actual canal length with the use of #25, #40 and #50 hand files that were compatible with the apical diameters. However, there was no significant difference between the measurements with the #15 hand file (p > 0.05). According to the electronic measurement results made with the #15 hand file in teeth with 0.25, 0.40 and 0.50 apical diameters, the use of a file that was incompatible with the apical diameter did not have a significant effect on accuracy (p > 0.05). Conclusion: The use of a file that is compatible with the apical diameter of the tooth in the determination of the working length with measurement of EALs close to the actual canal length. The accuracy of EALs is not affected by the file size in electronic measurements with file sizes smaller than the apical diameter in teeth with apical diameters up to 0.50 mm.
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    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\.
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    Cone-beam dental computerize tomography for evaluating changes of aging in the dimensions central superior incisor root canals
    (Medicina Oral S L, 2011) Kaya, Sadullah; Adiguzel, Ozkan; Yavuz, Izzet; Tumen, Emin-Caner; Akkus, Zeki
    Objectives: Cone-beam dental computerize tomography (CBCT), a noninvasive imaging method, was used to image the pulp-dentin complex. Pulp changes histologically with aging. While many studies have investigated the histological changes in pulp, few studies have focused on the changes in the shape of the root canals. This study evaluated the changes in the root canals with aging of central superior teeth using CBCT. Study Design: The study examined 100 non-carious maxillary central teeth. These teeth were divided into five groups according to the age of the patients: Group A: 15-24, Group B: 25-34, Group C: 35-44, Group D: 45-54 and Group E: 55 years and older. CBCT was used to determine root length, and pulp width at the cervical, apical 1/2, and apical 1/3. Results: On comparing the groups using one-way analysis of variance (ANOVA), the root length did not differ (P > 0.05), while the pulp width at the cervical, apical 1/2, and apical 1/3 differed between the groups (P < 0.001). Conclusions: The pulp length did not change with aging, while the pulp width did change. CBCT can be used to determine the precise root length and width, to prevent iatrogenic exposure of the apex, complementing existing methods. This will improve the prediction of the prognosis of root canal treatment.
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    Daimî Anterior Kesici Dişlerde Pulpa Kalsifikasyonu İnsidansı: Bir Konik Işınlı Bilgisayarlı Tomografi Kesitsel Çalışması
    (2023) Kaya, Sadullah; Doğan, Merve; Özfidan Arıkan, Nihal Firdevs
    Amaç: Kalsifiye dişlerde kanal tedavisi yapmak zordur. Kalsi- fikasyon tam veya kısmi olabilir. Genellikle Pulpa kalsifikasyonu 200 μm'den küçük oldu ğunda ve yeterli mineralizasyon göstermedi ğinde radyolojik olarak tespit etmek mümkün değildir. Bu çalışmada, retros- pektif konik ışınlı bilgisayarlı tomografi görüntülerinin değerlendiril- mesiyle alt ve üst çene kesici di şlerde pulpa kalsifikasyon s ıklığının saptanması ve kalsifikasyon ile ya ş, cinsiyet, di ş grubu ve yer ald ığı çeneye göre aralar ındaki ilişkinin incelenmesi amaçlanm ıştır. Gereç ve Yöntemler: Dicle Üniversitesi Oral Diagnoz ve Radyoloji Ana Bilim Dalına başvuran rastgele seçilmi ş 501 hastanın tomografisi in- celendi. Değerlendirme 2 tekrarl ı olarak 2 endodontist taraf ından ba- ğımsız olarak yap ıldı ve ortak fikir birli ğine göre s ınıflandırıldı. Hastaların demografik bilgilerini içermeyen, artefaktl ı ve görüntü ka- litesi düşük tomografiler çal ışmaya dâhil edilmedi. De ğerlendirmeye alınan hastaların yaş aralığı Grup 1: 16-30, Grup 2: 31-50 ve Grup 3: 51 ve üzeri olarak sınıflandırıldı. Gruplar arasındaki farklar incelenir- ken değişkenler normal dağılımdan gelmiyorsa grupların ikili karşılaş- tırmalarında Mann-Whitney U testi uygulandı. Nominal değişkenlerin grupları arasındaki ilişkileri incelenirken ki-kare analizi uygulandı. Bul- gular: 501 hastanın 26’sında kalsifiye dişe rastlandı. Diş bazında ise in- celenen 3.228 di şten 57’sinde kalsifikasyon görüldü. Kalsifikasyon görülme sıklığı bakımından çene ve ya ş grubu arasında anlamlı fark bulunurken (p<0,05) cinsiyetler aras ında anlaml ı fark bulunmad ı (p>0,05). Sonuç: Dişler arasında kalsifikasyon en çok mandibular sant- ral kesici dişlerde saptandı
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    Dental eğitim simülatörü ile entegre klinik uygulamalarının öğrencilerin beceri gelişimine etkilerinin ve geri dönüşüm çıktılarının değerlendirilmesi
    (Dicle Üniversitesi Diş Hekimliği Fakültesi, 2018) Zengingül, Ali İhsan; Karadede, M. İrfan; Bahşi, Emrullah; Kaya, Sadullah; Doğru, Mehmet; Uysal, Ersin
    Bu çalışmanın amacı klinik öncesinde öğrencilerin beceri gelişimlerinin objektif olarak değerlendirilmesi ve klinik uygulamalardaki sıklıkla karşılaşılan problemlerin ve başarısızlık nedenlerinin laboratuar ortamında belirlenmesidir.Çalışmaya 2015 yılında Diş Hekimliği Fakültesini kazanmış, 3 yıl eğitim almış ve 3. Sınıfa gelmiş 33 gözlemci öğrenci alındı. 3 yıl boyunca bu öğrencilerin çeşitli branşlarda el becerileri değerlendirildi. Daha sonra simülasyon laboratuvarında önceki yıllarda preklinikte yaptıkları işler tekrar yaptırıldı. Değerlendirme, Kavrama Yetenek Testi (PAT) skorları ve Dental Katılım Testleri (DAT) uygulanarak yapıldı. PAT değerlendirmesinde Bonferroni Düzeltmesi sonucunda öğretim üyeleri arasında ikili karşılaştırmalarda istatistiksel olarak anlamlılık bulundu (p<0,005). Tukey-HSD testi sonuçlarına göre öğretim üyelerine ait çoklu karşılaştırmalarda da istatistiksel olarak anlamlılık bulundu (p<0,005). Öğretim üyelerinin değerlendirmeleri ve öğrencilerin ilk 3 sene pratik derslerden elde ettikleri notlar Paired t testi ile değerlendirildi (p<0,005). İkili karşılaştırmalarda öğrencilerin yaptıkları kesimlerde farklılık bulunmazken (p>0,05) eğiticiöğrenci açılarında anlamlı bir farklılık bulundu (p<0,005).Yapılan uygulamalar ne kadar tekrar ettirilirse pratik olarak gelişim o düzeyde artmaktadır. Pratik uygulaması yoğun olan klinikler Simülasyon laboratuvarı kullanımını 1. Sınıftan itibaren başlatmalıdır. 3D sanal gerçeklik modelleri ile yapılan değerlendirmeler daha objektif ve net sonuçlar vermektedir.
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    Öğe
    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.
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    Öğe
    Devital beyazlatma uygulanmış dişlerde kullanılan dört farklı restoratif materyalin mikrosızıntı açısından değerlendirilmesi
    (2007) Kaya, Sadullah; Çolak, Mehmet
    Amaç: İn vitro olarak yapılan bu çalışma; devital beyazlatma yapılmış dişlere uygulanan 4 farklı restorasyon materyalinin mikrosızıntı açısından karşılaştırılarak, değerlendirilmesi amacıyla planlanmıştır. Gereç ve Yöntem: Periodontal veya ortodontik nedenlerle çürük-süz ve restorasyonsuz 60 adet anterior diş çekilmiştir. Yapay ola¬rak boyanmak üzere her bir diş %50'si taze insan kanı ile dolu test tüplerine yerleştirilerek santrifüje edilmiştir. Her grupta aynı beyazlatma materyali kullanılmak üzere, rastgele 15'erli dört gruba ayrılarak "walking bleach" tekniği ile beyazlatılmıştır. Birinci gruptaki dişlerin giriş kavitelerine Valux Plus, ikinci grup-takilere Tetric Ceram, üçüncü gruptakilere Herculite XRV ve dör¬düncü gruptakilere ise Admira kompozit rezin restoratif materyal¬leri, üretici firmaların önerileri doğrultusunda uygulanmıştır. Mikrosızıntının ölçümü için kesitler alınarak, lam yüzeylerine yapıştırılmış ve elde edilen kesitler, mikroskop altında ideal bir görüntü sağlamak amacıyla inceltilmiştir. Kesitlerdeki boya penetrasyon miktarları; x25 büyütmede stereo mikroskop kul¬lanılarak doğrusal olarak ölçülmüştür. Ölçümler sonucu elde edilen veriler, istatistiksel olarak Kruskal-Wallis non-paramet-rik testi ile değerlendirildi. Bulgular: Kruskal-Wallis non-parametrik testi sonucunda farklılıklar olduğu bulundu (p<0.001). Gruplar arasındaki iki¬li karşılaştırmalar için, Bonferroni düzeltilmeli post-hoc testi uygulandı (p<0.05). Beyazlatma ajanının; Valux Plus, Tetric Ceram, Herculite XRV ve Admira kompozit rezin restoratif materyalleri ile diş arasın¬da farklı miktarlarda mikrosızıntıya yol açtığı görüldü. Admiranın, Valux Plus ve Tetric Ceram ile ikili karşılaştırılma¬sı, mikrosızıntı yönünden anlamlı bulunmuştur. Sonuç: Devital beyazlatma uygulanmış dişlerde, restoratif ma¬teryaller ile diş arasında oluşabilecek mikrosızıntı miktarları¬nın, materyallerin doldurucu miktarları ve adeziv özelliklerine göre değişiklik gösterebileceğini düşündürdü.
  • Küçük Resim
    Öğe
    Devital beyazlatma uygulanmış dişlerde kullanılan dört farklı restoratif materyalin mikrosızıntı açısından değerlendirmesi
    (2017) Kaya, Sadullah; Çolak, Mehmet
    Devital dişlerin beyazlatılması, hasta psikolojisini estetik yönden etkileyen önemli bir gereksinimdir. Dişhekimliğinde uygulanan konservatif beyazlatma teknikleriyle; estetik sorunlara neden olan diş renkleşmelerini gidermenin yanı sıra, diş ve dişeti sağlığı da korunmaya çalışılmaktadır. Günümüzde, dişhekimliğinde restorasyon amacıyla birçok materyal kullanılmaktadır. Dişlerin restorasyonunda kullanılacak materyallerin taşıması gereken fonksiyonel, estetik, ekonomik ve direnç gibi özelliklerin yanısıra minimal mikrosızıntı göstermeleri de önemlidir. İn vitro olarak yapılan bu çalışma; periodontal veya ortodontik nedenlerle çekilmiş ve yapay olarak boyanmış, çürüksüz ve restorasyonsuz 60 adet ön grup dişte devital beyazlatma işlemi yapıldıktan sonra kullanılan 4 farklı restorasyon materyalinin mikrosızıntı açısından karşılaştırılarak değerlendirilmesi amacıyla planlanmıştır. Tüm dişlerin lingual yüzeylerine endodontik giriş kaviteleri açılmış ve ardından, kökler mine-sement sınırının 3 mm aşağısından bir fissür frezle kesilerek uzaklaştırılmıştır. Her bir kanal gates glidden kök kanal frezleri kullanılarak genişletilmiştir. Her bir diş; yapay olarak boyanmak üzere %50'si taze insan kam ile dolu test tüplerine yerleştirilerek santrifüje edilerek her grupta aynı beyazlatma materyali kullanılmak üzere, rastgele 15' erli dört gruba ayrılarak walking bleach tekniği ile beyazlatılmıştır. Birinci gruptaki dişlerin giriş kavitelerine Valux Plus, ikinci gruptakilere Tetric Ceram, üçüncü gruptakilere Herculite XRV ve dördüncü gruptakilere ise Adrnira kompozit rezin restoratif materyalleri üretici firmaların önerileri doğrultusunda uygulanmıştır. Mikrosızıntının ölçümü için kesitler alınarak, lam yüzeylerine yapıştırılmış ve elde edilen kesitler, mikroskop altında ideal bir görüntü sağlamak amacıyla inceltilmiştir. Kesitlerdeki boya penetrasyon miktarları; x25 büyütmede stereo mikroskop kullanılarak lineer olarak ölçülmüştür. Ölçümler sonucu elde edilen veriler, istatistiksel olarak Kruskal-Wallis non- parametrik testi kullamlarak değerlendirilmiştir. Kullanılan dört farklı tip kompozit materyali arasında; Adrnira en az mikrosızıntı gösteren materyal olurken, onu sırasıyla Herculite XRV, Tetric Ceram ve Valux Plus izlemiştir. Anahtar Kelimeler: Mikrosızıntı, devital beyazlatma, kompozit
  • Küçük Resim
    Öğe
    Dört kanallı alt 2. küçük azı dişin endodontik tedavisi: Olgu sunumu
    (Dicle Üniversitesi Diş Hekimliği Fakültesi, 2018) Şimşek, Alaz; Kaya, Sadullah; Ergül, İsmail
    Amaç: Bu olgu sunumunun amacı ekstra kanal varlığı görülen dişlerde CBCT görüntüsü almanın sağladıgı yararın görülmesi ve ekstra kanalların endodontik açıdan tedavi edilmesidir. Endodonti kliniğine dental ağrı sebebiyle başvuran hastanın 35 nolu dişine kanal tedavisi endikasyonu konularak tedaviye başlandı. Konvansiyonel radyograflar kullanılarak, dişe ait 3 kanal tespit edildi. İki seansta kanal dolumu yapılan dişin ekstra bir kanalının olduğu saptandı ve bunun lokalizasyonunun belirlenmesi için CBCT kullanıldı. CBCT incelemesi sonucu 4. Kanal bulunmuş ve tedavi tamamlanmıştır. Yapılan bu vaka ışığında ekstra kanal varlıklarının değerlendirilmesinde CBCT görüntülerinin klinik olarak oldukça büyük fayda sağlandığı görüşüne varılmıştır.