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Öğe Comparative clinical evaluation of the efficacy of a new method for caries diagnosis and excavation(Medknow Publications, 2015) Peskersoy C.; Turkun M.; Onal B.Aim: The purpose of this study is to compare the efficiency of fluorescence-aided caries excavation (FACE) to remove carious dentin primary teeth with that of conventional methods. Methods and Materials: After caries excavation was carried out, dentin surfaces were conventionally inspected using visual tactile criteria and 415 cavities which were classified as caries-free, re-inspected with Face-Light and caries detector dye (CDD) methods. Orange-red fluorescing areas classified as carious dentin, as well as stained carious dentin. All the data were recorded according to localization of the caries and determination efficiency of the methods. X 2 test was used to compare the mean values of both Face-Light and dye applications, while Wilcoxon test performed to evaluate the effectiveness for each diagnostic method. Results: A total of 273 patients with 415 Class II (OM/OD) cavities (1.65 ± 0.52 teeth per patient) with carious lesions in molar and premolar teeth, were examined. Out of 415 teeth, in 149 teeth (35.9%) no caries findings had been illustrated. While FACE detected remaining carious or partially removed areas in 237 teeth (57.2%), CDD stained only 29 teeth by itself (P < 0.05). Conclusion: In conclusion, FACE has a higher detectability compared to visual inspection and caries detector dye in diagnosis and removal of carious dentin.Öğe Factors affecting complication rates of ureteroscopic lithotripsy in children: Results of multi-institutional retrospective analysis by pediatric stone disease study group of Turkish pediatric urology society(2011) Dogan H.S.; Onal B.; Satar N.; Aygun C.; Piskin M.; Tanriverdi O.; Gurocak S.; Gunay L.M.; Burgu B.; Ozden E.; Nazli O.; Erdem E.; Yucel S.; Kefi A.; Demirci D.; Uluocak N.; Aridogan I.A.; Turunc T.; Yalcin V.; Kilinc M.; Horasanli K.; Tan M.O.; Soygur T.; Sarikaya S.; Kilicarslan H.; Turna B.; Doruk H.E.; Tekgul S.Purpose: We evaluated factors affecting complication rates of ureteroscopy for pediatric ureteral calculi. Materials and Methods: We retrospectively evaluated 642 children who underwent ureteroscopy at 16 Turkish centers between 2000 and 2010. Semirigid ureteroscopy was used with various calibers to treat 670 ureteral units in 660 sessions. Complications were evaluated according to the Satava and Clavien classification systems. Univariate and multivariate analyses were done to determine predictive factors affecting complication rates. Results: A total of 367 females and 265 males were studied. Mean ± SD patient age was 90.2 ± 51.4 months (range 4 to 204). Mean ± SD stone size, operative time and postoperative hospital stay were 8.9 ± 4.7 mm, 45.8 ± 23.8 minutes and 1.8 ± 2.8 days, respectively. At a mean ± SD followup of 13.3 ± 17.6 months 92.8% of patients were stone-free and efficacy quotient was 90.3%. Complications, which occurred in 8.4% of patients (54 of 642), were intraoperative in 25 (Satava grade I to II in 22), early postoperative in 25 (Clavien grade I to II in 23) and late postoperative in 4 (all grade III). While operative time, age, institutional experience, orifice dilation, stenting and stone burden were statistically significant on univariate analysis, multivariate analysis revealed that operative time was the only statistically significant parameter affecting the complication rate. Conclusions: Semirigid ureteroscopy is effective, with a 90% stone-free rate and efficacy quotient. Most complications are low grade and self-limiting. Our results confirm that prolonged operative time is an independent predictor of complications, and should be considered when choosing and performing the treatment modality. © 2011 American Urological Association Education and Research, Inc.Öğe Follow-up of flowable resin composites performed with a universal adhesive system in non-carious cervical lesions: A randomized, controlled 24-month clinical trial(Mosher and Linder, Inc, 2020) Kemalo?lu H.; Atalayin C.; Ergucu Z.; Onal B.Purpose: This randomized, controlled study evaluated the 2-year clinical performance of two flowable resin composites performed with a universal adhesive in two etching modes for restoring non-carious cervical lesions (NCCLs). Methods: One hundred NCCLs were restored with two flowable composites (Charisma Opal Flow and G-aenial Universal Flo) and a universal adhesive (Single Bond Universal) with two etching modes (self-etch and etch&rinse) in a random order. The restorations were evaluated for retention, marginal adaptation, anatomic form, marginal discoloration, surface texture and secondary caries (modified USPHS criteria) at baseline, and after 6, 12 and 24 months. Results: The clinical success for retention, surface texture and secondary caries parameters was scored as 100% for each group after 6, 12 and 24 months. The first acceptable changes (Bravo score) in marginal adaptation, anatomical form and marginal discoloration started to show up after 12 months for all test groups, except for etch&rinse+Charisma Opal Flow. Self-etch+Charisma Opal Flow and self-etch+G-aenial Universal Flo showed progressive marginal discoloration that remained in the clinical acceptability level after 2 years. After 24 months, each resin composite restored with either the etch&rinse mode or the self-etch mode of the universal adhesive showed similar clinical performance. Marginal discoloration was higher in the restorations performed with the self-etch system. Selective-etching can be favorable. © 2020 Mosher and Linder, Inc. All rights reserved.Öğe Nation-wide analysis of the impact of Covid-19 pandemic on daily urology practice in Turkey(Blackwell Publishing Ltd, 2021) Bozkurt O.; Sen V.; Irer B.; Sagnak L.; Onal B.; Tanidir Y.; Duran M.B.Objective: To present a nation-wide analysis of the workload of urology departments in Turkey week-by-week during Covid-19 pandemic. Methodology: The centres participating in the study were divided into three groups as tertiary referral centres, state hospitals and private practice hospitals. The number of outpatients, inpatients, daily interventions and urological surgeries were recorded prospectively between 9-March-2020 and 31-May-2020. All these variables were recorded for the same time interval of 2019 as well. The weekly change of the workload of urology during pandemic period was evaluated, also the workload of urology and the distributions of certain urological surgeries were compared between the pandemic period and the same time interval of the year 2019. Results: A total of 51 centres participated in the study. The number of outpatients, inpatients, urological surgeries and daily interventions were found to be dramatically decreased by the 3rd week of pandemics in state hospitals and tertiary referral centres; however, the daily urological practice were similar in private practice hospitals throughout the pandemic period. When the workload of urology in pandemic period and the same time interval of the year 2019 were compared, a huge decrease was observed in all variables during pandemic period. However, temporary measures like ureteral stenting, nephrostomy placement and percutaneous cystostomy have been found to increase during Covid-19 pandemic compared with normal life. Conclusions: Covid-19 pandemic significantly affected the routine daily urological practice likewise other subspecialties and priority was given to emergent and non-deferrable surgeries by urologists in concordance with published clinical guidelines. © 2020 John Wiley & Sons LtdÖğe The prevalence and consequences of burnout on a group of preclinical dental students(Dental Investigations Society, 2015) Atalayin C.; Balkis M.; Tezel H.; Onal B.; Kayrak G.Objective: The aim of this study is to investigate the prevalence of burnout among a group of Turkish preclinical dental students, to compare the level of burnout and to determine the consequences in structural equation model. Materials and Methods: Preclinical dental students (n = 329, 50.5% of females and 49.5% of males) aged between 18 and 24 took part in the study. Maslach burnout inventory student version, academic satisfaction scale, and personal information sheet were used to gather data. Pearson correlation analyses, t-test, and one-way ANOVA were used for statistical analysis. The proposed theoretical model was tested via observed variable path analysis using maximum likelihood parameter estimation with AMOS 7.0. Results: About 22.3% of students had high level of emotional exhaustion, 16.7% of students had high level of cynicism, and 17.9% of students suffered from high level of reduced academic efficacy. While the students attending the first grade reported higher level of reduced academic efficacy, the students in the third grade reported higher level of emotional exhaustion. Academic workload played an important role in the development of burnout. As consequences of burnout, students with high levels of burnout intended to change their current major and did not to plan to continue to postgraduate education. Students with high level of burnout reported less level of academic satisfaction and academic achievement. Conclusions: Creating awareness on the burnout of dental students from the preclinical period may be useful for prevention and more compatible dental education environment. © 2015 European Journal of Dentistry.Öğe Shear bond strengths of three different resin luting cements to bovine teeth(2005) Kalender A.; Onal B.; Turkun M.; Dalgar H.; Kaytan B.This study evaluated the shear bond strengths of dentin/porcelain and enamel/porcelain specimens bonded with three different dual-cure cements. The specimens were prepared using the heat-pressed ceramic technique. Three different dual-cure cements were used to bond samples to previously prepared bovine enamel and dentin surfaces. The specimens were thermocycled and tested in shear until failure. The shearbond data was subjected to one-way ANOVA, followed by Duncan's multiple range test at a significance level of p < 0.05. The shear bond strengths of Variolink II were significantly higher than those of Rely-X ARC and Panavia F for enamel and dentin (p < 0.05). Bond strenghts in enamel were higher than those of dentin in all materials (p < 0.05).
