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Öğe Age estimation using maxillary canine pulp/tooth area ratio, with an application of Kvaal's methods on digital orthopantomographs in a Turkish sample(Taylor & Francis Ltd, 2014) Misirlioglu, Melda; Nalcaci, Rana; Adisen, Mehmet Zahit; Yilmaz, Selmi; Yorubulut, SerapThe present study was designed to test the applicability of Kvaal's method on digital orthopantomographs and to develop a new formula measuring pulp/tooth area ratio from periapical X-rays in a group of individuals living in Central Anatolia. Orthopantomographs and periapical X-rays of 114 patients aged between 17-72 years were selected. According to reported technique, three mandibular teeth were evaluated in each orthopantomogram with Kvaal's method. Additionally, the pulp/tooth area ratio was measured on periapical X-rays of maxillary canine. Correlations between real age and morphological variables were calculated for all teeth using Pearson's correlation coefficient. Kvaal's method on digital panoramic radiographs gave acceptable results (standard deviation, SD = 5.9 to 7.9 years) that were close to the original. In addition, regression equations were developed to estimate age from morphological variables and the best results were achieved using the regression equation for the maxillary canine with a pulp/tooth area ratio (standard error of estimate, SEE = +/- 6.75; coefficient of determination R-2 = 0.67). There was no significant difference between observed and estimated age for age groups and gender based on the established regression equations. With this particular study group, the equations presented in the study gave more accurate results than Kvaal's original equations and may be considered more suitable for a Turkish population.Öğe Agreement and repeatability of central corneal thickness measurements by four different optical devices and an ultrasound pachymeter(Springer, 2019) Gokcinar, Nesrin Buyuktortop; Yumusak, Erhan; Ornek, Nurgul; Yorubulut, Serap; Onaran, ZaferPurpose To compare the repeatability and agreement of central corneal thickness (CCT) measurements by spectral-domain optical coherence tomography (OCT), corneal topography (CT) with a combined Scheimpflug-Placido system, optical biometry (OB), specular microscopy (SM), and ultrasound pachymetry (UP). Methods A single observer measured CCT twice in 150 eyes of 150 subjects with each of five devices: Nidek RS-3000 Advance OCT, CSO Sirius combined Scheimpflug-Placido disc system CT, Nidek AL-Scan partial coherence interferometry-based OB, Tomey EM-3000 SM, and Reichert iPac ultrasonic pachymeter. Pachymetry values corrected by the SM device software were also recorded. Levels of agreement between devices were evaluated by Bland-Altman plots with 95% limits of agreement, and repeatability for each device was analysed with intraclass correlation coefficients. Results The mean CCTs measured by OCT, CT, OB, SM, corrected SM, and UP were 544.60 +/- 29.56, 536.19 +/- 32.14, 528.29 +/- 29.45, 524.88 +/- 32.38, 537.88 +/- 32.38, and 545.29 +/- 30.75 mu m, respectively. Mean CCT differed significantly between the devices (p<0.05) apart from between OCT and UP, and between CT and corrected SM. Mean paired differences between devices ranged between 0.68 and 20.41 mu m. Repeatability with all devices was excellent (>0.99). The range of limits of agreement was the least between OCT and UP. Conclusions Different CCT measurement techniques produce quite different results, so CCT evaluation and follow-up should be performed using the same device or devices with close compatibility.Öğe Assessment of Third Molar Impaction Pattern and Associated Clinical Symptoms in a Central Anatolian Turkish Population(Karger, 2016) Yilmaz, Selmi; Adisen, Mehmet Zahit; Misirlioglu, Melda; Yorubulut, SerapObjectives: The purpose of this study was to assess the pattern of third molar impaction and associated symptoms in a Central Anatolian Turkish population. Material and Methods: A total of 2,133 impacted third molar teeth of 705 panoramic radiographs were reviewed. The positions of impacted third molar teeth on the panoramic radiographs were documented according to the classifications of Pell and Gregory and of Winter. The presence of related symptoms including pain, pericoronitis, lymphadenopathy and trismus was noted for every patient. Distributions of obtained values were compared using the Pearson. 2 test. Nonparametric values were analyzed using the Mann-Whitney U test and Kruskal-Wallis test. Results: The mean age of the subjects was 30.58 +/- 11.98 years (range: 19-73); in a review of the 2,133 impacted third molar teeth, the most common angulation of impaction in both maxillaries was vertical (1,177; 55%). Level B impaction was the most common in the maxilla (425/1,037; 39%), while level C impaction was the most common in the mandible (635/1,096; 61%). Pain (272/705; 39%) and pericoronitis (188/705; 27%) were found to be the most common complications of impaction. Among 705 patients (335 males, 370 females), pericoronitis was more prevalent in males (101; 30%) and usually related to lower third molars (236; 22%). The retromolar space was significantly smaller in females (p < 0.05). Moreover, there was a significant difference in retromolar space for the area of jaw (maxillary: 11.3 mm; mandibular: 14.2 mm) and impaction level (A: 14.7 mm; B: 11.1 mm; C: 10.3 mm; p < 0.05). Conclusion: The pattern of third molar impaction in a Central Anatolian Turkish population was characterized by a high prevalence rate of level C impaction with vertical position. Pain and pericoronitis were the most common symptoms usually associated with level A impaction and vertical position. (C) 2015 S. Karger AG, BaselÖğe Bacterial adhesion to braided surgical sutures: an in vitro study(Springer, 2016) Boybeyi, Ozlem; Kacmaz, Birgul; Gunal, Yasemin Dere; Gul, Serdar; Yorubulut, Serap; Aslan, Mustafa KemalBackground Surgical suture materials are accepted to be associated with a substantial proportion of surgical site infections. These infections are related with biofilm formation similar to that of other synthetic and implantable medical devices. Methods We conducted an in vitro study to investigate the bacterial adherence to different types of braided surgical sutures. The included sutures were polyglactin (Vicryl (R)) group (VG), rapidly absorbable polyglactin (Rapide-Vicryl (R)) group (RVG), nitrofurazone-coated polyglactin (Vicryl (R)) group (FVG), polyethylene terephthalate (Etibond (R)) group (EG), and natural silk (Silk (R)) group (SG). All sutures were cut in 1 cm length, embedded into tryptic soy broth, and then 10(6)-CFU/ml Escherichia coli and Staphylococcus aureus were added. After the 24th and 96th hour of incubation, bacterial colonies were counted, and results were expressed as CFU/cm. Results E. coli adhesion was significantly lower in VG and significantly higher in SG compared to FVG, RVG, and EG at the 24th and 96th hour of cultivation (p< 0.05). The S. aureus adhesion results at 24th hour showed that VG had the least bacterial adhesion, and FVG had the most bacterial adhesion compared to other sutures (p< 0.05). The S. aureus adhesion results at the 96th hour of cultivation showed that bacterial adhesion on sutures was not significantly different between groups (p> 0.05). Conclusion Of all braided surgical sutures, bacterial adhesion is significantly lower in polyglactin and significantly higher in silk sutures. Nitrofurazone coverage of suture worsens S. aureus contamination of the suture.Öğe Bivariate Pseudo-Gompertz distribution and concomitants of its order statistics(Elsevier Science Bv, 2013) Yorubulut, Serap; Gebizlioglu, Omer L.This paper presents a new bivariate Pseudo-Gompertz distribution that sprouts from the classical Gompertz distribution and possesses the features of pseudo-distribution functions. In addition to some standard properties of the proposed distribution, distributions of order statistics and their concomitants for samples drawn from the new distribution are obtained. The survival and hazard functions of the concomitants are shown and their values are tabled. Interpretations of the results are given in connection with risk events and risk management. (C) 2013 Elsevier B.V. All rights reserved.Öğe Correlation of upper airway radiographic measurements with risk status for obstructive sleep apnea syndrome in young dental patients(Elsevier Science Inc, 2017) Adisen, Mehmet Zahit; Misirlioglu, Melda; Yorubulut, Serap; Nalcaci, RanaObjective. The aim of the present study is to compare radiographic measurements of the upper airway (UA) in young adult patients with different levels of risk status for obstructive sleep apnea syndrome. Study Design. The study included 50 patients between 18 and 30 years of age who were referred for dental examination and evaluation of impacted third molars. Case record forms, including habit history, along with the Berlin Questionnaire and the Epworth Sleepiness Scale, were completed by the patients and their relatives. According to the answers, 25 low-risk patients and 25 high-risk patients were selected. Cephalometric radiographs and cone beam computed radiography images were obtained for radiographic analysis when the patients were admitted into the study. Results. There were significant differences in body mass index, neck circumference measurements, Epworth score, and smoking status between risk groups. There were significant differences for UA measurements on radiographic evaluation. Body mass index (BMI) was found to be correlated positively with neck circumference and Epworth scores and negatively with UA measurements for all patients. Velopharyngeal measurements showed the highest correlation with Epworth scores, BMI, and neck circumference. Conclusions. The radiographic findings correlated with the survey results. Our data suggest that radiographic measurements of UA may be used as a predictor of risk for obstructive sleep apnea syndrome in a young population.Öğe The Effect of Extractum Cepae, Heparin Sodium, and Allantoin in Experimental Peritoneal Adhesion(SPRINGER INDIA, 2020) Ozmen, Ismail; Gunal, Yasemin Dere; Atasoy, Pinar; Kisa, Ucler; Yorubulut, Serap; Aslan, Mustafa Kemal; Boybeyi-Turer, OzlemThe purpose of the study is to investigate the effects of extractum cepae (EC), heparin sodium (HS), and allantoin (AA) on postoperative peritoneal adhesion (PPA) prevention. Forty-eight rats were allocated into six groups (n = 8). PPA was performed by Harris method. In group 1, no additional procedure was done. Abdominal cavity was washed with normal saline in group 2, EC in group 3, HS in group 4, AA in group 5, and EC-HS-AA mixture (EHA-m) in group 6. On the 21st postoperative day, PPA was scored with Nair adhesion score and examined for fibrosis histopathologically and hydroxy-proline levels (OHP) biochemically. Macroscopically, PPA was decreased in groups 2, 4, and 6 compared to groups 1, 3, and 5 (p < 0.05) and decreased in group 2 compared to other groups (p < 0.05). Histopathologically, fibrosis was decreased in groups 2, 4, and 6 compared to other groups and decreased in group 2 compared to other groups (p < 0.05). Tissue OHP level was decreased in groups 2, 3, 4, and 5 compared to groups 1 and 6 (p < 0.05). Tissue OHP level was decreased in group 6 compared to group 1, but the difference was not statistically significant. PPA formation decreases with normal saline, HS and EHA-m, whereas increases with EC and AA both macroscopically and microscopically. Although HS and EHA-m seem to have adhesion prevention effect, washing the intestines with saline seems to be more effective.Öğe Emotion dysregulation in migraine patients: can it be a hallmark the probability of the transformation from episodIc to chronic?(Taylor & Francis Ltd, 2023) Kocakaya, Hanife; Say, Bahar; Yorubulut, Serap; Ergun, UfukObjectiveThe main aim of this study was to examine patients with migraine in terms of emotional dysregulation and to evaluate whether the emotion dysregulation is effective on chronicity in migraine.Materials and MethodsA total of 85 migraine patients and 61 healthy participants were included in this study. All participants were evaluated using Migraine Disability Scale (MIDAS), Visual Analog Scale (VAS), Depression, Anxiety, and Stress Scale (DASS-21), Difficulties in Emotion Regulation Scale (DERS), Pain Catastrophizing Scale (PCS), and the Discomfort Intolerance Scale (DIS). Then, all results were compared between the migraine patients and healthy individuals. In addition, the migraine patients were separated into three groups as patients without an aura, patients with an aura and patients with chronic migraine and then their results were compared among them. Finally, the predictive markers of chronic migraine were explored using regression analyses.ResultsAmong 85 migraine patients, the mean age was 31.5 (SD = 7.98); 83.5% were women. The total and subscale scores of DERS, PCS, DIS, and DASS-21 were significantly higher in patients than in healthy individuals (p < 0.01). Subscale scores of DERS, DIS, and DASS-21 in the chronic migraine patients were found to be higher than in the other two patient groups (p < 0.01). Logistic regression analysis showed that chronic migraine could be associated with 'lack of emotional clarity' (OR = 1.229; p = 0.042), 'lack of awareness' (OR = 1.187; p = 0.032), 'migraine associated disability' (OR = 1.128; p = 0.033), and 'stress' (OR = 1.292; p = 0.027).ConclusionThis study results showed that chronic migraine could be associated with the emotional dysregulation. To our knowledge, this study is the preliminary study in the literature and, therefore, new studies with large samples are needed.Öğe Evaluation of putamen area and cerebral peduncle with surrounding cistern in patients with Parkinson's disease: is there a difference from controls in cranial MRI?(Taylor & Francis Ltd, 2024) Say, Bahar; Muluk, Nuray Bayar; Inal, Mikail; Goncuoglu, Alper; Yorubulut, Serap; Ergun, UfukObjectives Nigrostriatal dopaminergic neuron loss is essential in pathogenesis of Parkinson's disease (PD). The purpose of this study was to evaluate nigrostriatal structures including the putamen, cerebral peduncle, widths of interpeduncular cistern, and ambient cistern around the midbrain with conventional cranial magnetic resonance images (MRI) in patients with PD.Methods The MRI of 56 subjects was included, which was selected from the radiological data system for this retrospective study. The 29 patients with idiopathic PD were included and their disease duration, Hoehn&Yahr stage, and Levodopa equivalent dose (LED) were recorded. The 27 controls had a normal neurologic examination and cranial MRI. All subjects in the patient and control groups had right-hand dominance. Putamen and cerebral peduncle areas and widths of interpeduncular and ambient cisterns were measured in T2 sequences of MRI. Further statistical analysis was applied to exclude gender and age effect on areas.Results The areas of putamen and cerebral peduncles were significantly reduced in patients with PD compared to the control bilaterally (p < 0.001). Enlargement of interpeduncular and ambient cisterns in patients was higher than in controls, and it was significant (p < 0.001). A correlation was not observed between measurement results and clinical characteristics of patients with PD. Only the cerebral peduncle area/ambient cistern width ratio was significantly correlated with disease duration positively (right r = 0.46 p = 0.012, left r = 0.389 p = 0.037).Conclusion Clinicians should be careful with conventional MRIs of patients with idiopathic PD in practice. It may be different from controls without any neurological disorder, particularly putamen, cerebral peduncles, interpeduncular, and ambient cisterns.Öğe Hastanenin tekrar tercih edilebilirliğinin lojistik regresyon ile incelenmesi(2018) Yorubulut, Serap; Erdugan, FundaAmaç: Hastanenin tekrar tercih edilmesi kurum açısından memnuniyetin bir göstergesidir. Bu çalışmada hastanenin tekrar tercih edilmesi üzerinde etkili olduğu düşünülen cinsiyet, yaş, eğitim durumu gibi demografik değişkenler ile birlikte memnuniyet faktörleri olarak belirlenmiş olan hekim, fiziki olanak ve çalışan personelin etkisinin lojistik regresyon analizi ile açıklanması amaçlanmıştır.Gereç ve Yöntemler: Araştırmanın örneklemine Kırıkkale Üniversitesi Tıp Fakültesi Hastanesi polikliniklerine başvuran 1349 hasta dahil edilmiştir. Hastalar tabakalı rasgele örnekleme yöntemi ile belirlenmiştir.Bulgular: Hastanenin tekrar tercih edilmesinde demografik değişkenlerden cinsiyet, yaş ve eğitim durumu değişkenlerinin istatistiksel olarak önemli (p<0,05) olduğu bulunmuştur. Memnuniyet faktörlerinden ise fiziki olanak ve hekim faktörünün istatistiksel olarak önemli olduğu, çalışan personelin tekrar tercihte önemli olmadığı sonucuna ulaşılmıştır. Sonuçlar: Bu çalışmanın sonucunda, hastanenin tekrar tercih edilmesinde hastanın cinsiyet, yaş ve eğitim durumu ile birlikte hekimlerden ve hastane fiziki olanaklarından duydukları memnuniyet düzeyinin önemli olduğu belirlenmiştir. Sağlık kurumları tekrar tercihte önemli olan bu değişkenleri göz önüne alarak yeni stratejiler geliştirme çabası içinde olmalıdır.Öğe On concomitants of upper record statistics and survival analysis for a pseudo-Gompertz distribution(Elsevier, 2014) Yorubulut, Serap; Gebizlioglu, Omer L.This paper presents upper record statistics and their concomitants for a bivariate pseudo-Gompertz distribution about paired lifetime variables. Survival and hazard functions are derived for the distribution. The survival and hazard functions are displayed for some selected values of the parameters of concern. Interpretations are given for the potential reliability and actuarial applications of the obtained results. (C) 2013 Elsevier B.V. All rights reserved.Öğe A Pseudo-Pareto Distribution and Concomitants of Its Order Statistics(Springer, 2016) Gebizlioglu, Omer L.; Yorubulut, SerapPareto distributions are very flexible probability models with various forms and kinds. In this paper, a new bivariate Pseudo-Pareto distribution and its properties are presented and discussed. Main variables, order statistics and concomitants of this distribution are studied and their importance for risk and reliability analysis is explained. Joint and marginal distributions, complementing cumulative distributions and hazard functions of the variables are derived. Numerical illustrations, graphical displays and interpretations for the obtained distributions and derived functions are provided. An implementation example on defaultable bonds is performed.Öğe Validity and reliability of the full cup test in patients with chronic low back pain(Kare Publ, 2022) Agir, Hatice; Aras, Muyesser; Keskin, Esra Dilek; Ozer, Hafsa Feyza; Karaca, Gulten; Ergun, Ufuk; Yorubulut, SerapObjectives:This study aims to determine the validity and reliability of the full cup test (FCT), evaluating the pain severity in patients with chronic low back pain. Methods: A total of 100 patients (70 women and 30 men) aged over 18 years with mechanical low back pain were enrolled in the study. Demographic and clinical characteristics were recorded. Pain severity was evaluated using the visual analog scale (VAS) and FCT, the functional state was assessed by the Oswestry Disability Index (ODI), and the quality of life was assessed using the Nottingham Health Profile (NHP). FCT was performed on the 1st day by two independent observers (G1 and G2) and 3 days after the first application, patients were readministered the FCT by G1. Results:The mean age of participants was 56.04 +/- 12.33 years and mean body mass index was 27.7 +/- 4.3 kg/m(2). The reliability of the FCT and intraclass correlation coefficient (ICC) was found to be 0.989 for intrarater compliance, ICC was found to be 0.984 for inter-rater compliance, and Cronbach's alpha reliability coefficient was alpha=0.994. External construct validity of the scale was confirmed with expected correlations with all subgroups of NHP except for social isolation, VAS and ODI (p<0.01). Conclusion:This study concludes that the FCT provides a reliable and valid instrument for measuring pain severity and loss of the function in patients with chronic mechanical back pain. We consider that FCT is a simple and easy test in patients with low education and advanced age.
