Aims: This study aimed to assess the prevalence of different types of errors in panoramic radiography and explore potential correlations between these errors, age, and gender. Methods: A total of 2000 panoramic radiographs randomly selected from the patient archives of the Department of Oral, Dental, and Maxillofacial Radiology at Dicle University Faculty of Dentistry, taken in 2023 for various indications, were analyzed. Two experienced radiologists (BK and EK) reviewed the digital panoramic X-ray images. Interobserver agreement was assessed by having both observers re-evaluate 10% of the sample. Patients with developmental anomalies, history of trauma, orthognathic surgery, maxillofacial pathology (e.g., tumors/cysts), and those under 16 years old were excluded. Statistical analyses were conducted using SPSS 20.0 software (IBM Corp., Armonk, NY, USA), with a significance level set at α=5%. Cohen’s kappa statistics were utilized to calculate intraobserver agreement. Results: In the analysis of 2000 panoramic radiographs, it was found that 81.16% exhibited at least one error. The predominant error identified was the misplacement of the tongue against the palate, accounting for 34.75% of cases. A statistically significant association was observed between increasing patient age and higher error rates (p0.05). Conclusion: The prevalence of positioning errors in panoramic radiography is considerable. It underscores the importance of providing adequate training to healthcare professionals and technicians to mitigate the risk of misinterpretation and unnecessary exposure to radiation.

It is essential to undertake thorough preparation, debridement and filling of all root canals in order to achieve a clinically successful treatment outcome. A total of 525 CBCT images of both maxillary first and second molars were analyzed. The observations and measurements were positioned 1 millimeter (mm) apically from the pulp base to standardize the methodology for the detection of the second mesiobuccal canal (MB2). To assess the distances between the canals and the relationship between the presence of MB2 and mesiobuccal (MB) root length, MB root length was quantified in millimeters. IBM SPSS Version 21.0 was employed for statistical analyses, with a type I error level of 5% accepted. MB2 was identified in 36.5% of the first maxillary molar (1MM) and second maxillary molar (2MM) teeth of the patients included in the study. When the frequency of MB2 was evaluated according to gender and right-left side, no statistically significant difference was found (p>0.05). When examining the relationship between the presence of MB2 and the length of the MB root, it was observed that only in the left second molars with MB2 present, the root length was slightly shorter. It is our contention that this study will furnish dentists with crucial data that will enhance the efficacy of root canal therapy for these teeth.

Aims: This study aimed to evaluate the prevalence of impacted teeth, their distribution according to tooth number, and their impaction patterns using panoramic radiographs in individuals who presented to Batman University Faculty of Dentistry Hospital.Methods: In this retrospective cross-sectional study, panoramic radiographs of individuals aged 18 years and older who attended Batman University Faculty of Dentistry Hospital within a one-year period were evaluated. A total of 409 individuals were included. The presence of impacted teeth, their distribution according to tooth number, and impaction patterns (vertical, mesioangular, distoangular, horizontal, and buccolingual) were assessed on panoramic radiographs. Age was categorized as 18-30, 31-40, 41-50, and ≥51 years. Statistical analyses were performed using SPSS version 27.0.1, and relationships between variables were analyzed using the chi-square test (p

Aim: In the field of dentistry, panoramic radiography (PR) and dental volumetric tomography (DVT) play a crucial role in assessing the position of impacted teeth and their relationship with neighboring anatomical structures. The objective of this study was to investigate the association between impacted mandibular teeth and adjacent dental structures, as well as the surrounding anatomical formations, using both PR and DVT imaging techniques. Methodology: In this retrospective study, we examined DVT and PR images of a total of 150 patients who sought treatment at Dicle University Faculty of Dentistry between 2015 and 2021. The main objective was to assess the prevalence of impacted teeth, specifically in the mandible region, and to analyze their location, as well as their association with neighboring teeth and surrounding anatomical structures, utilizing both PR and DVT imaging modalities. The collected data were analyzed using the licensed IBM SPSS 21 software package. Results: The study included a total of 150 patients, comprising 70 women and 80 men, in whom 206 impacted teeth were detected in the radiographs. Among these, the most common classifications were impacted lower-third molars (ILTM), with a vertical orientation accounting for 41.04%, class B with a rate of 50.87%, and class II with 68.79% prevalence. The inferior alveolar canal (IAC) was found to be positioned inferiorly in 71.68% of cases, with no bone septum observed between the IAC and ILTM root in 50.87% of cases. In 23.7% of cases, the ILTM root was in contact with the lingual cortical bone, while lingual bone perforation was observed in 8.67% of cases. Significant statistical differences were found between the DVT and PR images concerning the position of the IAC and its relationship with the lingual bone, as well as the examination of distal caries and external root resorption (ERR) in the second molar tooth (p<0.05). Additionally, impacted canines were predominantly observed in the buccal position, six out of 14 teeth being in contact with the incisive canal. Positioned lingually, impacted premolars and supernumerary premolars were frequently observed. Second molars were commonly seen to be mesially inclined and not in contact with the IAC. Conclusion: The alignment and positioning of teeth within the mandible are intricately linked to the nearby anatomical structures. It is crucial to regularly monitor impacted teeth using PR, and, in cases where there is a higher risk, it is recommended to augment the diagnosis with three-dimensional DVTs.

Aim: The aim of this study was to determine the region, frequency, distribution, age, and sex of histopathologically diagnosed oral malignant and oral potentially malignant lesions obtained from patients admitted to the Department of Pathology, Dicle University Faculty of Medicine, Southeastern Anatolia Region of Turkey. Methods: The pathological data of oral malignant and potentially malignant lesions histopathologically diagnosed at the Department of Pathology, Dicle University Faculty of Medicine, between 2018 and 2023, were retrospectively reviewed. Potentially malignant and malignant oral lesions were classified, and their distribution according to region, age, and sex was analyzed. The Shapiro-Wilk test was used to analyze the conformity of continuous variables to the normal distribution. The type I error level was accepted as 5% in statistical analyses. Results: Among 161 patients with oral or potential malignancy, 76 (47.2%) were female and 85 (52.8%) were male, with a mean age of 53.9 ± 17.4 years. The most common lesions were found in the buccal mucosa (40.4%). When 104 malignant lesions were analyzed, the most common lesion was oral squamous cell carcinoma with a rate of 75%, and when 57 potentially malignant lesions were analyzed, 38 (66.7%) of the patients had lichen planus, and 19 (33.3%) had leukoplakia. Conclusion: This retrospective study shows the distribution, frequency, and characteristics of malignant lesions in the oral cavity in a group of populations, especially in the Southeastern Anatolia Region of Turkey, and allows comparison with studies in different populations. How to cite this article: Kaplan B, Alabalık U, Akşahin C, Çolak M, Ortaç H. Investigation of the prevalence of potentially malignant and malignant oral lesions in the Southeastern Anatolia Region of Turkey: A 5-year retrospective study. J Med Dent Invest 2023; 4: e230348. https://doi.org/10.5577/jomdi.e230348

This study aimed to evaluate the image-based technical performance of deep learning-based models in classifying impacted mandibular third molars on panoram