Background: The aim of this study was to evaluate the effect of bruxism on the cortical and trabecular bone of the mandible using the radiomorphometric indexes and fractal analysis (FA) additionally to examine the efficiency of FA as diagnostic test for bruxism. Methods: Evaluation was performed on panoramic radiographs of 94 bruxists and 94 non-bruxist individuals with the ImageJ program. Cortical bone was assessed with mandibular cortical index, mental index, and panoramic mental index. Trabecular bone in the condyle, gonial, and corpus region was evaluated by FA. An independent sample t and Mann-Whitney-U tests and Pearson and Spearman rank correlations were conducted for statistical analysis. Results: A total of 188 participants, 112 female, and 76 male, were included in the study. The sample age ranged from 18 to 43, with a mean of 27.55 (± 7.022) years. FA values of the angulus were significantly higher than those of the condyle and corpus, and the mean of the sample for the angulus, condyle, and corpus, respectively, were; 1.36 (± 10), 1.10 (± 0.9), 1.13 (± 0.8). There was a positive correlation between FA of the mandibular corpus and age (r = .163, p = .025). Females’ values were smaller than males’ in the FAs of three regions, and significant differences were found in FA of the condyle and angulus of the mandible, MCI, and PMI according to gender. There was no statistically significant difference between bruxist and non-bruxist patients in term of FAs of three regions, MCI, MI, and PMI values (p > .05). Conclusions: FA of the condyle and angulus of the mandible, MCI, and PMI are significantly affected by gender. However bruxism doesn’t cause a significant change in the fractal dimensions of the bone in the mandible and doesn’t change substantially MCI, MI, and PMI.

Background: Evaluation of the maxillary sinus anatomy prior to sinus lift procedures is important to avoid surgical complications due to the close anatomical relationship between the posterior maxillary region and the maxillary sinüs. Introduction: In order to avoid traumatizing the posterior superior alveolar artery and to prevent perioperative bleeding, locating the exact position of the artery is imperative before the surgical procedures. Methods: 150 CBCT scans were evaluated. The distance from the inferior border of the PSAA to the alveolar crest (the vertical line from the artery to the crest) and floor of the maxillary sinus, the distance from PSAA to medial sinus wall, nasal septum, zygomatic arch, position, the distance from the floor of maxillary üs to the alveolar crest and diameter of the PSAA were assessed. Locations of the artery were classified. Results: 150 CBCT scans were evaluated. The distance from the inferior border of the PSAA to the alveolar crest (the vertical line from the artery to the crest) and floor of the maxillary sinus, the distance from PSAA to medial sinus wall, nasal septum, zygomatic arch, position, the distance from the floor of maxillary sinüs to the alveolar crest and diameter of the PSAA were assessed. Locations of the artery were classified. Conclusion: The location of PSAA is intraosseous in most patients. The artery diameters were mostly ≥ 1 mm and we can say that increasing the size also increases the risk of complications.

Background: To assess maxillary sinus findings using dental volumetric tomography before and after surgery in patients with dental implants in the maxillary posterior region with or without sinus floor elevation due to insufficient bone height. Materials and Methods: Cone-beam computerized tomography images taken for surgical planning before implantation and controlling after implantation were reviewed in 50 patients applied to the Department of Oral, Dental and Maxillofacial Surgery and Radiology of Dentistry Faculty at Ondokuz Mayıs University. Maxillary sinus diseases (focal mucosal thickening, polyp, mucous retention cyst, sinusitis) were evaluated. The relationship between dental implant and sinus floor augmentation procedures and maxillary sinus findings was statistically evaluated using the Chi-square test and Wilcoxon rank test. Results: In this study, 26 female (52%) and 24 male (48%) patients were examined. The mean age of all patients was 53.82 years (± 8.63). Focal mucosal thickening was most frequently observed in the study. There was no statistically significant correlation between implant applications and sinus pathologies with both internal and external elevation procedures and implant applications (P > 0.05). Conclusions: Sinus floor augmentation and dental implant applications seemed not to increase the risk of maxillary sinüs pathologies. However, it is suggested to carry out similar studies with more samples.

Background/Objectives: This study aimed to investigate the relationship between the mesiobuccal root canal configuration (MB RCC), the interorifice distance (IOD) and the corresponding root and other root lengths of the permanent maxillary first molars; Methods: Cone beam computed tomography (CBCT) images were acquired between 2020 and 2023 for different purposes unrelated to this study. Overall, 1550 CBCT images were retrospectively evaluated. A dentomaxillofacial radiologist with 15 years of experience evaluated the CBCT images and performed the measurements; Results: According to the MB RCC, there was no statistically significant difference between the Vertucci type II and Vertucci type IV groups in terms of the mean age and sex distribution (p = 0.694 and p = 0.273). There was no statistically significant difference in the IOD between the MB RCC groups (p = 0.755). Moreover, according to the MB RCC, there was no statistically significant difference between the Vertucci type II and Vertucci type IV groups in terms of the mesiobuccal, distobuccal, palatinal, and mean root lengths (p > 0.05); Conclusions: There was no association between the IOD and the type of RCC in the maxillary first molars. New studies conducted by collecting data from different centers to explore the different morphological features of maxillary first molars and detect their anatomical differences will provide more reliable and accurate results.