Diş Hekimliği Fakültesi Koleksiyonu
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Article Evaluation of the Accuracy of Detecting C-Shaped Canals in Mandibular Second Molars Identified by Cone-Beam Computed Tomography on Panoramic Radiographs Using Artificial Intelligence Algorithms Developed With Deep Learning Methods(Springer, 2026-01-09) Uysal, O.; Polat, M.; Akgul, H. M.Objective: The aim of this study is to detect the C-shaped canal formation in mandibular second molars on panoramic radiographs based on different Deep Convolutional Neural Networks (DCNNs) trained using panoramic radiographs. Method: This study includes images of 592 patients, consisting of digital panoramic radiographs and cone-beam computed tomography (CBCT) scans of patients with at least one mandibular second molar, archived in the Department of Oral, Dental, and Maxillofacial Radiology, Faculty of Dentistry, Pamukkale University. To confirm the presence of a C-shaped canal, CBCT images were analyzed and set as the gold standard. From 289 panoramic radiographs with C-shaped canals, a total of 422 mandibular second molars were labeled, and an equal number of 422 mandibular second molars were labeled from 303 panoramic radiographs without C-shaped canals, resulting in a total dataset of 844 labeled panoramic radiographs. To detect C-shaped canals in the 844 panoramic images comprising our dataset, the detection accuracy performance of 11 different deep learning models was investigated. These models were applied to the preprocessed and non-preprocessed panoramic images of mandibular second molars divided into two separate groups as “crown-root” and “root”. For the first time in the literature, to the best of our knowledge, model prediction results were fused using majority voting for the detection of C-shaped canals in mandibular second molars. Then, corresponding performance measurements were evaluated in terms of accuracy, precision, recall, specificity and confusion matrices. Results: For the crown-root dataset, the highest average accuracy metrics for preprocessed and non-preprocessed images were obtained as 0.886 (88.6%) and 0.885 (88.5%), respectively. For the root dataset, the highest average accuracy values for preprocessed and non-preprocessed images were 0.887 (88.7%) and 0.892 (89.2%), respectively. The highest accuracy performance metrics, on the other hand, obtained by the fusion of different DCNNs decisions with the application of majority voting, yielded as 0.902 (90.2%) and 0.897 (89.7%) for crown-root and root dataset groups, respectively. Conclusion: High-performance values were achieved through the use of combined deep learning architectures. Obtained results show that the proposed method is significant for the detection of C-shaped canals in terms of the success of endodontic treatments, and use of deep learning models are sufficiently capable of assisting clinicians. © The Author(s) under exclusive licence to Japanese Society for Oral and Maxillofacial Radiology 2026.Article Immediate and Short-Term Effect of Manual Therapy on Masseter Muscle: an Ultrasonography Study(Springer, 2025-04-26) Acikgoz, Gozde; Uzun, Ezgi; Yildiz, Girayhan; Akgul, Hayati Murat; Telci, Emine Aslan; Aslan Telci, EmineObjectives Manual therapy is one of the recommended treatments for temporomandibular joint dysfunction (TMD). This study aims to investigate the ultrasonographic changes in the masseter muscle following manual therapy in patients with TMD, as well as the immediate and short-term effects of the therapy on mouth opening, muscle pain, muscle relaxation, and activities of daily living. Methods The study involved 20 individuals (10 female, mean age = 29.3 +/- 11.38; 10 male, mean age = 30.8 +/- 10.42) with masseter region pain and TMD, who received a session manual therapy. Ultrasonography assessed changes in the masseter muscle's thickness, echogenicity, and elasticity before therapy, immediately after, and 1-week following therapy. Muscle pain, its impact on daily life, and muscle relaxation were measured using the Visual Analog Scale, and maximum mouth opening was recorded using a caliper. Data were statistically analyzed using the repeated measures ANOVA test, the Friedman, the paired t test. Results The study found significant decreases in masseter muscle thickness immediately and 1 week following therapy (p < 0.001), along with a significant increase in elasticity (p < 0.01). Pain levels decreased significantly following therapy (p < 0.001), and the impact of pain on daily activities improved significantly 1 week following therapy (p < 0.001). Muscle relaxation also increased 1 week following therapy compared to immediately following therapy (p < 0.01). Maximum mouth opening was significantly greater immediately following therapy compared to before therapy (p < 0.01). Conclusion This study shows that manual therapy results in immediate and short-term improvements in masseter muscle thickness, elasticity, pain reduction, and the impact on daily activities in TMD patients experiencing masseter muscle pain.Article Citation - WoS: 1Citation - Scopus: 1Comparison of different techniques used for inferior alveolar nerve block anaesthesia regarding the pain caused in cooperative children(Springer, 2024-11-11) Sari, F.; Ipek, H. OzbeyPurposeThe aim of this study is to compare the application of inferior alveolar nerve block (IANB) anaesthesia in children with traditional plastic syringe (TPS) and computer-controlled injection device Dentapen (R) using two different modes [continuous mode (DC) and ramp-up mode (DR)] in terms of pain. MethodsThis study included 96 children aged 7-12 who were determined to be positive (3) or definitely positive (4) according to the Frankl Behaviour Evaluation Scale and in need of treatment who had IANB anaesthesia indication in the right and left regions. Patients were divided into three groups and compared in terms of pain felt during IANB anaesthesia according to heart rate, oxygen saturation, Wong Baker Pain Rating Scale, Face Legs Activity Cry Consolability Pain Scale and patient preference distributions. ResultsHeart rate values increased significantly during the injection of IANB anaesthesia with all methods [TPS, DC and DR methods (p < 0.05)]. No significant differences were found in terms of pain between the TPS, DC and DR methods in the intragroup and intergroup assessments. However, among the patient preferences of TPS and DC methods, the number of patients who preferred the DC method was found to be statistically significantly higher those who preferred the TPS method (p = 0.026). ConclusionAlthough the TPS group scored higher than the Dentapen (R) groups in terms of pain, the difference between the investigated IANB anaesthesia techniques was not statistically significant. However, the majority of the patients preferred the Dentapen (R) device compared to the TPS. It appears that more research is needed on the Dentapen (R) device in local anaesthesia applications in children.Article Citation - WoS: 2Citation - Scopus: 3Examination of oral hemangiomas by intraoral ultrasonography(Springer, 2021-03-03) Derindag, Gozde; Sarica, Irfan; Caglayan, FatmaObjectives Oral hemangioma is a benign vascular tumor characterized by the presence of numerous blood vessels. We aimed to examine the clinical and ultrasonographic findings of patients diagnosed with oral hemangioma in our ultrasonography (USG) archive, retrospectively. Methods This study was conducted by examining 20 patients diagnosed with oral hemangioma and underwent USG examination in the Department of Oral and Maxillofacial Radiology of Ataturk University Faculty of Dentistry from 2016 to 2020. All patients had intraoral and radiographic examinations. Patients pre-diagnosed clinically oral hemangioma were evaluated as intraoral with USG. The intraoral USG examinations were performed using both the B-mode and the color Doppler mode. Results The mean age of the patients was 42.4 +/- 19.14 years; 16 patients were female and four were male. The lesions were mostly observed on the alveolar mucosa (30%), followed by the buccal mucosa (25%), the lower lip (15%), the mouth floor (15%), the tongue (15%). In intraoral USG examinations of all oral hemangiomas, we detected submucosal located, well-defined, lobulated, non-capsule, hypo-isoechoic, heterogeneous lesion areas. Additionally, while we detected only peripheral blood flow in 6 (30%) of 20 patients, we detected both internal and peripheral blood flow in 14 (70%). Conclusions In our study, the examination of the oral hemangiomas with the intraoral probe and the color Doppler mode was very helpful in the differential diagnosis. Although histopathology has an important place in definitive diagnosis, particularly intraoral USG can provide sufficient information for the diagnosis of oral hemangiomas.Article Citation - WoS: 12Citation - Scopus: 10Evaluation of motion artifacts in cone-beam computed tomography with three different patient positioning(Springer, 2020-05-20) Keris, Elif Yildizer; Demirel, Oguzhan; Ozdede, MelihObjectives: Cone-beam computed tomography (CBCT), despite its advantages, has some drawbacks, such as artifacts and movement of the patient during scanning may lead to motion artifacts (MAs). This retrospective study aimed to evaluate the MAs in three different CBCT devices and to analyze their relationship with age, the gender of the patients, and scanning times. Methods: This study included 360 CBCT images from three institutions scanned in standing, sitting and supine positions. MAs presence, age, gender, and scanning times were recorded. Of the patients, 129 were scanned in standing position, 131 in sitting position, and 100 in supine position. Results: MAs were found in 6.7% of patients in total; 8%, 7.6%, and 4% in standing, sitting, and supine positions, respectively. No statistically significant relationship was observed between MAs presence and patient position. The mean age of the patients with MAs was higher than patients without, in total and in standing positions. Scanning time showed no correlation with artifact presence. Conclusions: Patient position is not related to MAs presence. The age of the patient is a factor in movement, and has a high impact in standing position. Although insignificant, MAs were less common in supine position than sitting and standing positions. Sitting and supine positioning might reduce motion artifacts in older patients. © 2020, Japanese Society for Oral and Maxillofacial Radiology and Springer Nature Singapore Pte Ltd.Article Citation - WoS: 56Citation - Scopus: 60PRF improves wound healing and postoperative discomfort after harvesting subepithelial connective tissue graft from palate: a randomized controlled trial(Springer, 2019-05-18) Alpan, Aysan Lektemur; Cin, Gizem TorumtayObjectives: The aim of this study is to determine the use of platelet-rich fibrin (PRF) in the management of soft tissue donor site healing after harvesting connective tissue graft (CTG) from the palate and evaluate the postoperative discomfort (pain, bleeding, analgesic consumption, tissue color match) of patients. Materials and methods: Forty patients were randomly assigned to PRF or control group. In the PRF group, PRF membrane was placed into CTG donor site. After surgery, delayed bleeding, early healing index (EHI), tissue color match, and analgesic consumption were recorded. The visual analog scale (VAS) was used to observe the postoperative pain and tissue color match. Data were analyzed using the independent sample t test and the repeated measure ANOVA test. Results: The patients in the PRF group reported significantly lower pain scores at all-time points. Postoperative 3rd and 7th day, EHI scores were lower in the favor of the PRF group. VAS score values of tissue color match were lower in the control group at 7th and 14th day, compared with the PRF group. Analgesic intake was significantly lower in the PRF group postoperatively at 1st and 3rd day that of control group. Conclusion: PRF application at the palatal donor site demonstrates promising results in terms of better wound healing and reduced postoperative discomfort in the patients after harvesting CTG. Clinical relevance: Patients may avoid surgical operations because of the discomfort or pain feeling. Reducing postoperative pain and discomfort and accelerating recovery meet the wishes of every patient and physician. PRF can provide these requirements as an easy method to obtain and implement. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.Article Citation - WoS: 4Citation - Scopus: 7An unusual case of double stafne bone cavities(Springer, 2020-01-02) Ozdede; MelihStafne bone cavity (SBC) is a rare lingual bone depression that is asymptomatic and contains salivary glands. Radiographically, an SBC is usually seen as well-defined homogenous oval radiolucency in the mandibular posterior region, below the mandibular canal. In this paper, a rare case of posterior-variant, double SBCs was presented. A 43-year old male patient was referred to our clinic with the complaint of third molar teeth. Panoramic and cone-beam computed tomographic images showed two well-defined oval radiolucencies on the left mandibular molar region, inferior to mandibular canal borders. No pain or swelling was detected in the region of the radiolucencies. Previous dental radiographs had the same images. Magnetic resonance imaging was performed to evaluate the presence of salivary gland in the radiolucent contents. Images showed that the bone cavities were filled with soft tissue having a signal similar to the submandibular gland. The diagnosis was made as double SBCs and the patient was informed about the lesions. © 2020, Springer-Verlag France SAS, part of Springer Nature.