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Öğe Assessment of maturation stages and the accuracy of age estimation methods in a Turkish population: A comparative study(Korean Acad Oral & Maxillofacial Radiology, 2022) Magat, Guldane; Ozcan, SevgiPurpose: This study assessed the associations between chronological age, dental maturation (DM), cervical vertebrae maturation (CVM), and hand-wrist maturation (HWM) in individuals aged 9-19 years. In addition, this study aimed to derive practical methods to evaluate the skeletal age using DM, CVM, or HWM for orthodontic, medical, and forensic purposes and to compare which of these 3 developmental parameters is more accurate for estimating the age of individuals in a Turkish population. Materials and Methods: Panoramic, lateral cephalometric, and hand-wrist radiographs of 284 patients aged 9-19 years were used in this study. The DM, CVM, and HWM stages were determined. The Kolmogorov-Smirnov, kappa, Wilcoxon, Kruskal-Wallis, chi-square, and Spearman correlation tests and simple linear regression analysis were used for statistical analysis. The significance level was 0.05. Results: Statistically significant differences were found between chronological age and DM, chronological age and CVM, and chronological age and HWM in both sexes (P <0.05). DM did not show statistically significant differences according to sex (P > 0.05), but CVM and HWM were statistically different between males and females (P < 0.05). The DM-estimated age yielded more accurate values than the other methods. Conclusion: All correlations between skeletal and dental stages were statistically significant. Our results showed that there was no statistically significant difference between chronological age and DM-estimated age. Therefore, it can be concluded that DM stages have the potential to be used for legal purposes.Öğe Comparison of cone-beam computed tomography and digital panoramic radiography for detecting peri-implant alveolar bone changes using trabecular micro-structure analysis(Korean Acad Oral & Maxillofacial Surgery, 2022) Magat, Guldane; Oncu, Elif; Ozcan, Sevgi; Orhan, KaanObjectives: We compared changes in fractal dimension (FD) and grayscale value (GSV) of peri-implant alveolar bone on digital panoramic radiograph (DPR) and cone-beam computed tomography (CBCT) immediately after implant surgery and 12 months postoperative. Materials and Methods: In this retrospective study, 16 patients who received posterior mandibular area dental implants with CBCT scans taken about 2 weeks after implantation and one year after implantation were analyzed. A region of interest was selected for each patient. FDs and GSVs were evaluated immediately after implant surgery and at 12-month follow-up to examine the functional loading of the implants. Results: There were no significant differences between DPR and CBCT measurements of FD values (P>0.05). No significant differences were observed between FD values and GSVs calculated after implant surgery and at the 12-month follow-up (F50.05). GSVs were not correlated with FD values (P>0.05). Conclusion: The DPR and reconstructed panoramic CBCT images exhibit similar image quality for the assessment of FD. There were no changes in FD values or GSVs of the pen-implant trabecular bone structure at the 12-month postoperative evaluation of the functional loading of the implant in comparison to values immediately after implantation. GSVs representing bone mass do not align with FD values that predict bone microstnictural parameters. Therefore, GSVs and Ws should be considered different parameters for assessing bone quality.Öğe Evaluation of the effect of sickle cell disease on the mandibular bone of children and adolescents by image texture and radiomorphometric analysis(Springer, 2023) Temur, Katibe Tugce; Magat, Guldane; Yilmaz, Melis; Ozcan, SevgiObjectivesSickle cell disease (SCD) can cause osteoporotic changes in the jaw bones. In this study, it was aimed to evaluate possible bone changes using fractal analysis (FA) and morphometric analyses in dental panoramic radiographs of children and adolescents diagnosed with both homozygous and heterozygous forms of SCD.MethodsSixty-five individuals (33 SCD, 32 controls) aged 6-17 years were included in the study. Four separate areas of interest (ROI) were selected for the right and left sides of all panoramic radiographs, and the FA value of the ROIs was calculated. Mandibular cortical width (MCW), panoramic mandibular index (PMI) and mandibular cortical index (MCI) and were evaluated. Data were statistically analyzed and p < 0.05 was accepted for statistical significance.ResultsFractal values of right and left ROI1 (the center of the mandibular angle.) and ROI4 (the cortical bone), and right ROI2 (the middle of the mandibular ramus) were statistically lower in the case group (p < 0.05). Right ROI2 and ROI4 fractal values of individuals in the case group were lower than those on the left side (p < 0.05). While MCI categories did not differ from the case-control group (p > 0.05), PMI and MCW values were lower in the case group (p < 0.05). All evaluated parameters did not differ according to age and gender (p > 0.05).ConclusionThe results of this study showed that SCD affects the mandible. FA, MCW and PMI parameters can be used to detect early osteoporotic changes in the disease.Öğe Evaluation of the mandibular trabecular bone in patients with bruxism using fractal analysis(Springer, 2021) Gulec, Melike; Tassoker, Melek; Ozcan, Sevgi; Orhan, KaanObjective The aims of this study were (1) to investigate the effect of bruxism on the fractal dimension (FD) of the mandibular trabecular bone through digital panoramic radiographs, and (2) to evaluate the effectiveness of fractal analysis as a diagnostic test for bruxism. Methods One hundred and six bruxer and 106 non-bruxer patients were included in the study. Three bilateral regions of interest (ROI) were selected: ROI-1, the mandibular condyle; ROI-2, the mandibular angle; ROI-3, the-area between the apical regions of the mandibular second premolar and the first molar teeth. FD values for the bruxer and non-bruxer groups were compared for each ROI. Results Only the FD measurements for the right mandibular condyle (ROI-1) showed a statistically significant difference (p = 0.041) between the bruxer and non-bruxer individuals. FD values measured in the bruxers (1.40 +/- 0.09) were lower than in the non-bruxers (1.42 +/- 0.08). Conclusion Fractal analysis may be a useful method for discerning trabecular differences in the condylar areas of bruxer individuals. In future studies, the unilateral mastication habits, the characteristics of dental wear, and the occlusal bite forces of individuals should be documented.Öğe Gender and Age Estimation Using the Morphometric Analysis of Odontoid Process: Is There a Relationship With Dental Maturation?(Lippincott Williams & Wilkins, 2019) Magat, Guldane; Ozcan, SevgiObjective: The purposes of this study were to show that differences in odontoid process related to age and gender using cone beam volumetric tomography, develop regression formulae based on metric data for gender and age estimation in a Turkish population and investigate whether there is a relationship between the odontoid process and dental maturation for usefulness in forensic and bioarchaeological studies. Material and Method: The study sample included a total of 77 subjects in the age group of 8-22 years. The anterior-posterior and transverse diameters of the odontoid process were measured. Regression formulae were performed for age and gender estimation. The dental maturation levels were determined according to Demirjian's method. Result: The mean values of anterior-posterior diameters were significantly larger than those of transverse diameters (P<0.05). Those values were statistically higher for men than for women (P<0.05). The lowest correlations were observed for the all measurements of the odontoid process in all cases. There were no significant correlations between the dental maturation levels and all measurements of the odontoid process. Conclusion: The findings of the present study state that measurements of the odontoid process can be utilized for age and gender estimation in the Turkish population.Öğe A HUGE LESION IN THE MAXILLARY POSTERIOR REGION DIAGNOSED HIGH GRADE MUCOEPIDERMOID CARCINOMA OF MINOR SALIVARY GLANDS: A CASE REPORT(Dokuz Eylul Univ Inst Health Sciences, 2022) Magat, Guldane; Ozcan, Sevgi; Yuce, Fatma; Cetin, Mine; Guven, Mehmet Esad; Eravci, Fakih Cihat; Orhan, KaanMucoepidermoid carcinoma (MEC) is the most common malignant tumor of the salivary glands. These tumors occur commonly in the major salivary glands, especially the parotid, and they are the most frequently located in the palate intraorally. The similarity between MEC and other odontogenic cysts in the mouth is a critical situation that needs attention in clinical examination. Early diagnosis is very important in the diagnosis of asymptomatic growth, reaching very large sizes easily, its recurrence potential, and malignant character. The treatment and prosthetic rehabilitation of MEC are specified according to histopathological grade, location, and invasion pattern of the tumors. The purpose of this case is to present a 19-years-old female with high-grade MEC of minor salivary glands at the palate.Öğe Investigation of the relationship between Sella Turcica Bridge and Ponticulus Posticus: A Lateral Cephalometric Study(Soc Chilena Anatomia, 2017) Tassoker, Melek; Kok, Hatice; Ozcan, SevgiThe ponticulus posticus (PP) is a bridge of bone sometimes found on the atlas vertebra surrounding the vertebral artery and the first cervical nerve root. Sella turcica bridging (STB) is the fusion of anterior and posterior clinoid processes. The objective of this study was to find out the association between STB and PP. For the study, 752 digital lateral cephalograms were retrieved from the archived records of Necmettin Erbakan University, Faculty of Dentistry, Konya, Turkey. There was a significant relationship between the presence of STB and PP (p=0.000, p<0.001). This study indicates that there is a significant correlation between the presence of STB and PP.Öğe Is the maxillary sinus volume affected by concha bullosa, nasal septal deviation, and impacted teeth? A CBCT study(Springer, 2020) Tassoker, Melek; Magat, Guldane; Lale, Bekir; Gulec, Melike; Ozcan, Sevgi; Orhan, KaanPurpose Various mechanisms play an important role in the growth of maxillary sinus cavities. The purpose of this study was to investigate the correlations of maxillary sinus volume (MSV) with nasal septal deviation (NSD), concha bullosa (CB) and impacted teeth using cone-beam computed tomography (CBCT) images. Methods From 55 patients, a total of 110 maxillary sinus images were obtained and examined. Data including age, gender, impacted third molar, canine teeth, NSD, and CB were examined. MSV was measured using the MIMICS software (Materialise HQ Technologielaan, Leuven, Belgium). All statistical analyses were performed using the SPSS (Statistical Package for Social Sciences, version 21) software and p values < 0.05 were considered to indicate statistical significance. Results Mean volume of the right maxillary sinus was 13.566 cm(3), while the left was 13.882 cm(3). The rate of patients with right and left impacted third molar teeth was 49.1% and 47.3%, respectively. The rate of right and left impacted canines was 1.8% and 5.5%, respectively. NSD was found in 56.4% of CBCT examinations and right and left CB were observed in 30.9% and 32.7% of the patients' examinations, respectively. Males had a significantly higher mean sinus volume than females for both sides (p < 0.05). There were no significant correlations between MSV and age (p > 0.05). No significant differences were found between MSV and impacted teeth, NSD and CB (p > 0.05). Conclusion NSD, CB, impacted teeth, and age were not found to be related to MSV. Gender had an effect on MSV and males had higher mean sinus volume than females.Öğe Occlusal Caries Detection and Diagnosis Using Visual ICDAS Criteria, Laser Fluorescence Measurements, and Near-Infrared Light Transillumination Images(Karger, 2020) Tassoker, Melek; Ozcan, Sevgi; Karabekiroglu, SaidObjective: Current diagnostic tools for non-cavitated occlusal caries are not very reliable. For this reason, newer systems need to be developed. The aim of this study was to compare the performance of visual inspection (ICDAS-II), laser fluorescence (DIAGNOdent pen), and the near-infrared transillumination technique (DIAGNOcam) in the detection of non-cavitated occlusal caries lesions under clinical and laboratory conditions in 90 third molar teeth planned for extraction. Materials and Methods:Ninety third molar teeth were firstly examined in clinical conditions, scored according to ICDAS-II criteria, and examined with DIAGNOdent pen and DIAGNOcam devices. After finishing the clinical examination, the teeth were re-evaluated shortly after the extractions with the same methods. Then, the teeth were sectioned for histological validation according to Downer's criteria. Sensitivity, specificity, accuracy, and area under the receiver operating characteristic (ROC) curves were calculated based on the histological results. Results: For the D-0-D1-4 threshold, the area under the ROC curve values ranged between 0.754 and 0.881 for all systems. Sensitivity values ranged between 80.5 and 96.1%, and specificity values ranged between 61.5 and 84.6% for the three caries detection methods. DIAGNOcam had the best correlation value (0.616) according to histological observations and demonstrated a sensitivity rate of 96.1%, a specificity rate of 61.5%, and an accuracy rate of 91.1%. Conclusions: DIAGNOcam was found to be the most effective method for the diagnosis of occlusal caries without cavitation in permanent molar teeth.Öğe The Relationship between Sleep Bruxism with Coping with Stress, Anxiety and Alexithymia in Women(Galenos Publ House, 2020) Tassoker, Melek; Ozcan, Sevgi; Ak, MehmetObjective: Stress is known as a major cause of sleep bruxism. This disorder is characterised by repeated contraction of the masticatory muscles and requires multidisciplinary treatment. The objective of this study is to determine the relationship between sleep bruxism and three elements, namely alexithymia, coping with stress and anxiety on women. Materials and Methods: One hundred female participants were examined in the study. All respondents completed a stress coping questionnaire, State-trait Anxiety inventory (STAI) and Toronto-alexithymia-scale (TAS-20). A Mann-Whitney U test, Student's t-test and chi-square tests were applied to analyse the data. Statistical significance was assumed for p<0.05. Results: The study sample consisted of 68 bruxist and 32 non-bruxist patients. Statistical significance was found between the two groups on religion and alcohol substance abuse coping scores (p<0.05), although not for the case of TAS-20 and STAI values (p>0.05). Conclusion: The high score of alcohol-substance use (dysfunctional coping) in bruxist individuals and a high score of religion (emotion-focused coping) in nonbruxist individuals suggested that bruxist individuals have a tendency to prefer temporary methods to reduce stress instead of focusing on the root cause.
