Browsing by Author "Gündüz, H."

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Effectiveness of Different Rotary File Systems in Removing the Root Canal Filling Material: a Micro-Computed Tomography Study
(Tabriz University of Medical Sciences, 2021) Özlek, E.; Gündüz, H.
Background. This study aimed to examine the retreatment efficiency of four NiTi rotary file systems with micro-computed tomography (micro-CT). Methods. Forty premolar teeth were shaped up to F2 using the ProTaper Universal rotary file system and obturated with MTA Fillapex. The root canals were scanned with micro-CT to evaluate the volume of root canal filling before retreatment. The samples were randomly divided into four groups according to the file system used to remove root canal filling material (n = 10): ProTaper Universal Retreatment, ProTaper NEXT, EdgeFile XR, and EdgeFile® X3 NiTi system. All the samples were scanned with a micro-CT device for the second time to evaluate the amount of residual filling material in the root canals. The percentages of filling material removed from root canals were calculated. Additionally, the time spent on the removal of the root canal filling material was recorded. The data were analyzed using the Shapiro-Wilk and Kruskal-Wallis tests. Results. There were no significant differences between the groups in the percentage of root canal filling material removal. However, a statistically significant difference was found between the groups in the time required to reach the apex and remove the entire filling material. The time required to remove the root canal filling material was higher in the EdgeFile® X3 group. Conclusion. NiTi files manufactured for root canal preparation can be used effectively and safely to remove root canal filling materials. EdgeFile XR produced for retreatment can be used as an alternative to ProTaper Universal Retreatment files. © 2021 The Author(s).
Evaluation of Root Morphology and Root Canal Configuration of Mandibular and Maxillary Premolar Teeth in Turkish Subpopulation by Using Cone Beam Computed Tomography
(Yuzuncu Yil Universitesi Tip Fakultesi, 2022) Gündüz, H.; Özlek, E.
The aim of this study was to evaluate the root morphology and root canal configuration of the lower and upper premolars using cone-beam computed tomography (CBCT), according to gender and right-left position of the tooth in the Turkish subpopulation. For the evaluation of root canal anatomy of mandibular and maxillary premolar teeth, 494 patients were used. In total, 3,880 premolar teeth were evaluated. CBCT images were examined in the coronal, sagittal, and axial planes. Number of roots, canals, and canal configurations of the teeth were determined according to Vertucci's classification. Qualitative data were analysed with Chi-square, Fisher Exact, and Bonferroni tests (α=0.05%). According to the results of this study, in maxillary first premolars, 64.5% two roots, 87.7% two canals, and 67.8% Type Ⅳ canal configuration; in maxillary second premolars 77.3% one root, 50.4% one canal, and 50.4 Type Ⅰ canal configuration; in mandibular first premolars 89.9% one root, 76.9% one canal, and 76.9% Type Ⅰ canal configuration; and in mandibular second premolars 98.4% one root, 95.9% one canal, and 95.9% Type Ⅰ canal configuration were observed. No statistically significant effect of the tooth position (right, left) on the number of roots, canals, and canal configuration in maxillary and mandibular premolars was observed (p>0.05). Maxillary second premolar and mandibular first premolars showed a statistically significant effect on number of roots, canals, and canal configuration by gender (p=0.00, p=0.032). In addition, gender had a significant effect on number of roots in maxillary first premolars (p=0.017). © 2022, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.
Evaluation of the Frequency and Reasons for Requesting Cone-Beam Computed Tomography by Endodontists in Turkey
(Yuzuncu Yil Universitesi Tip Fakultesi, 2024) Gündüz, H.; Özlek, E.; Kadı, G.
This study aimed to evaluate the frequency and reasons for requesting Cone-beam computed tomography (CBCT) by endodontists in Turkey. 213 endodontists in Turkey participated in this survey research. Participants were asked 12 questions regarding their age, gender, the year since they completed their endodontic specialization or doctorate, the institution they work, their title and CBCT use cases. The descriptive statistics of the data are presented as percentages and frequencies. The chi-square test was used for pairwise comparisons (p<0.05). The rate of participants using a CBCT evaluation in their diagnosis and treatment was 77.9%. 81.7% of participants reported that the frequency of CBCT requests was less than 20% compared to the monthly total number of patients treated. 27.7% of participants indicated that the reason for requesting CBCT was to evaluate root resorption, and 36.6% indicated that they needed CBCT most frequently in the maxillary anterior region. It was determined that the majority of the participants, whose frequency of CBCT request was below 20%, did not have sufficient knowledge about CBCT. The majority of study participan ts use CBCT in their clinical practice. Although most participants have CBCT in their facility, they indicated that they do not have enough information about the use of CBCT. Most participants indicated that the frequency of CBCT use was lower than the number of cases studied. The reasons for using CBCT were complications in resorption and retreatment cases where two-dimensional imaging was inadequate for diagnosis and treatment. © 2024, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.