Browsing by Author "Koc, Cemre"

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3D Printing in Endodontics: Report of Three Clinical Cases with Innovative Approaches
(2021) Koc, Cemre; Capci, Abdullah; 34553896
3D printing is a process whereby a given material is deposited in successive layers to create a 3D object. In dentistry, this technology involves three steps: digital data acquisition using a scanner and/or CBCT, data processing and design within a software application, and manufacturing through 3D printing. The aim of the present article is to discuss the clinical application of 3D printing in endodontics through the presentation of three specific and original endodontic clinical cases. Innovative approaches were utilized in these cases for the treatment of a calcified root canal, periapical surgery, and autotransplantation. The results of all three cases were promising regarding proper case selection and in the design process. 3D-printing technology may be helpful to reduce surgical time, operator bias, and the risk of procedural errors.
Assessment of Endodontic Emergency Care in a COVID-19 Pandemic
(2022) Sisli, Selen Nihal; Koc, Cemre; Sayin, Ceren Efe; Gulsahi, Kamran; https://orcid.org/0000-0003-3510-7265
Objective: This study compared the aerosol-generating and non-aerosol -generating endodontic emergency procedures' success and assessed the outcome of endodontic treatments initiated before a pandemic but could not be completed in the targeted time. Materials and Methods: Emergency treatments were performed according to symptoms of teeth. Treatment success or failure was determined according to patients whether not re-referral with untimely pain. Short-term outcome and complications arising from teeth, which endodontic treatments were prolonged were also recorded. A chi-square test was used in the statistical analysis, and p<0.05 was considered significant. Results: The aerosol-generating procedure group's success rate was 86.2%, while it was 70.0% in the non-aerosol generating procedure group (p=0.050). The short-term survival rate of teeth was 83.7% in patients whose endodontic treatment had been prolonged. Conclusion: Considering the pros and cons, each emergency patient should be evaluated case-by-case.
Bacterial Colonization and Proliferation in Furcal Perforations Repaired by Different Materials: A Confocal Laser Scanning Microscopy Study
(2021) Elbahary, Shlomo; Haj Yahya, Sohad; Koc, Cemre; Shemesh, Hagay; Rosen, Eyal; Tsesis, Igor
Following furcal perforation, bacteria may colonize the defect and cause inflammation and periodontal destruction. This study used confocal laser scanning microscopy (CLSM) to evaluate Enterococcus faecalis colonization and proliferation in furcal perforations repaired with different materials. Furcal perforations created in 55 extracted human mandibular molars were repaired using either MTA-Angelus, Endocem, or Biodentine and coronally subjected to E. faecalis suspension for 21 days. The specimens were then stained using a LIVE/DEAD Viability Kit and visualized by CLSM. The minimum and maximum depths of bacterial penetration into the dentinal tubules were 159 and 1790 mu M, respectively, with a mean of 713 mu M. There were significantly more live than dead bacteria inside the dentinal tubules (p = 0.0023) in all groups, and all three repair materials exhibited a similarly sized stained area (p = 0.083). However, there were significant differences in the numbers of dead bacteria at the circumference of the perforation defect (p = 0.0041), with a significantly higher ratio of live to dead bacteria in the MTA-Angelus group (p = 0.001). Following perforation repair, bacteria may colonize the interface between the repair material and dentin and may penetrate through the dentinal tubules. The type of repair material has a significant effect on the viability of the colonizing bacteria.
Effect of Chitosan and EDTA Solutions on Bond Strength of Two Different Calcium Silicate Based Materials
(2023) Koc, Cemre; Gulsahi, Kamran; Kahya, Naime Didem
Objective: The aim of the present study was to evaluate the potential of using chitosan-based chelating agents to improve the bond strength of mineral trioxide aggregate (MTA) Angelus (Londrina, PR, Brazil) or MTA Repair high plasticity (Londrina, PR, Brazil). Materials and Methods: A total of 60 dentine discs were obtained from 15 freshly extracted human maxillary central incisors. Two canal -like holes were drilled and the disks were divided into four groups, as following; group 1: chitosan solution with acetic acid; group 2: chitosan solution with lactic acid; group 3: 17% ethylenediaminetetraacetic acid; and group 4: distilled water. Discs were subjected to the tested chelating solution for smear layer removal for 3 min. The two holes of the same dentine discs were each randomly filled with one of the tested materials. The push -out test was performed and data were analyzed using 2 -way analysis of variance test with a 5% significance level. Results: No significant differences were observed for the type of tested material (p=0.153) and the interaction between tested material and solution (p=0.922); however, there was a significant difference among chelating agents (p=0.001). Conclusion: Both materials showed similar bond strength regardless of the a chelating agent was used or not. All chelating agents significantly decreased the push -out strength of both materials, except for the chitosan solution prepared with acetic acid.
Versatility of high resolution ultrasonography in the assessment of granulomas and radicular cysts: a comparative in vivo study
(2019) Sonmez, Gul; Kamburoglu, Kivanc; Yilmaz, Funda; Koc, Cemre; Baris, Emre; Tuzuner, Aysegul; 31188679
Objectives: To evaluate and compare the diagnostic potential of high resolution ultrasound with periapical radiographs (PR) and CBCT in assessing granulomas and radicular cysts. Methods: This study included a total of 33 teeth from 33 patients with periapical lesions. Subjects were distributed among three groups. A consisted of teeth that were extracted. B consisted of teeth treated with root-canal treatment followed by apical surgery. C consisted of teeth treated with root-canal treatment only. Pre-treatment PR, ultrasound and CBCT images were obtained for Groups A, B and C and 6 month post-treatment PR and ultrasound images were obtained for Groups B and C. In addition, histopathological analysis was performed on lesions in Groups A and B. Lesions were classified as either cystic lesions or granulomas. Width, height, depth, surface area and volume of lesions were measured using the built-in softwares of the appropriate imaging modalities. Measurements were compared by Wilcoxon and paired sample t tests. Ultrasound and histopathological findings were compared with lc and Mc Nemar. Statistical significance was set at p < 0.05. Results: kappa coefficient (0.667; p = 0.002) suggested good agreement between ultrasound and histopathology. No statistically significant differences were found among periapical radiography, CBCT and ultrasound in the pre-treatment measurements of lesion width ( p = 0.308) or between CBCT and periapical radiography in the pre-treatment measurements of lesion height ( p = 0.863). In all cases, mean measurement values for all variables were lower for ultrasound than for CBCT. Conclusion: Ultrasound provided useful information for the diagnosis and assessment of granulomas and radicular cysts.