Diş Hekimliği Fakültesi / Faculty of Dentistry
Permanent URI for this collectionhttps://hdl.handle.net/11727/2120
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Item Comparison Of The Accuracy Of Three Interproximal Reduction Methods Used In Clear Aligner Treatment(CLINICAL ORAL INVESTIGATIONS, 2024-01-15) Gulec-Ergun, Pelinsu; Arman-Ozcirpici, Ayca; Atakan-Kocabalkan, Azize; Tuncer, Niluefer IremObjectivesTo comparatively assess 3 interproximal reduction (IPR) methods used in clear aligner treatment with regard to accuracy, and patient perception of discomfort and anxiety.Materials and methodsA total of 42 patients, treated with the Invisalign (R) system, were included in this prospective trial and received one of the following IPR methods: hand-operated abrasive strips (group 1; 14 patients, 150 teeth), motor-driven 3/4 oscillating segmental discs (group 2; 14 patients, 134 teeth), or motor-driven abrasive strips (group 3; 14 patients, 133 teeth). Accuracy was evaluated using the difference between planned and executed IPR. Anxiety and discomfort levels experienced by the patients were evaluated using a questionnaire of 17 questions.ResultsThe accuracy of IPR was high in groups 2 and 3; however, it was low in group 1 with the executed IPR significantly less than the planned amount. On quadrant-level, executed IPR was significantly less in the upper left quadrant in group 1, and significantly more in the upper right quadrant in group 2. The difference between planned IPR and executed IPR was significant for teeth 11, 21, 32, 33, and 43 in group 1, indicating deficiency. The average difference between planned IPR and executed IPR was 0.08 mm for group 1, 0.09 mm for group 2, and 0.1 mm for group 3. Anxiety and discomfort levels did not differ between the methods, but a negative correlation was observed between age and discomfort and anxiety levels.ConclusionsThe overall accuracy of the 2 motor-driven IPR methods was found to be better than the hand-operated system. Maxillary central incisors and mandibular canines were more prone to IPR deficiency when hand-operated abrasive strips were utilized. Patients were similarly comfortable with all 3 methods, and discomfort and anxiety levels decreased with age.Clinical relevanceMotor-driven methods have proven to be more effective when compared to the hand-operated ones by means of precision, speed, and patient comfort. If the clinician favors a hand-operated method, it may be advised to perform slightly more IPR especially on mandibular canines and maxillary central incisors.Item Characterizing The Unseen: Clinical And Radiographic Perspectives On Unilateral Condylar Hyperplasia(JOURNAL OF STOMATOLOGY ORAL AND MAXILLOFACIAL SURGERY, 2024-12) Ergezen, Ezgi; Salyut, Ardakgul; Akdeniz, Sidika Sinem; Cubuk, SecilObjectives: Unilateral condylar hyperplasia (UCH), marked by progressive condylar growth, occurs between ages 11-30 with unclear etiology. This retrospective study aims to clarify the clinical, radiographic, and demographic features of UCH to improve its diagnosis and treatment. Material and methods: Data for all patients included in this study were retrieved from the archive. Inclusion criteria were the diagnosis of UCH supported by a positive bone scan above 10% of condylar uptake in SPECT/ CT, the patient's history of progressive facial asymmetry, symptoms confirmed by the orthodontist during follow-up, and clinical and radiological evaluation. Demographic characteristics, along with volumetric and linear measurements, were statistically evaluated. Results: Forty-one patients were included in this study with 70.73% female predominance. Patients were classified as transverse and vertical type condylar hyperplasia (CH) according to their prominent asymmetry characteristics. Eighteen patients were classified as vertical type CH and 23 patients were classified as transverse type CH. Twenty had left-side condylar overgrowth, and 21 had right-side overgrowth. Condylar volume difference was significantly higher in vertical type CH patients compared to transverse type CH (p = 0.004). No correlation was found between growth rate (bone scan uptake ratio) and condylar volume difference in patients with vertical type and transverse type CH patients (p = 0.205). Conclusion: Particularly in cases that exhibit a pronounced vertical growth tendency, volumetric and linear measurements can guide the timing and treatment planning process. (c) 2024 Elsevier Masson SAS. All rights are reserved, including those for text and data mining, AI training, and similar technologies.Item Effect of cone beam computed tomography voxel size and dental specialty status on the agreement of observers in the detection and measurement of periapical lesions(2021) Kamburoglu, Kivanc; Koc, Emre; Sonmez, Gul; Elbahary, Shlomo; Rosen, Eyal; Tsesis, Igor; 34120879Objective. To compare observer agreement between endodontists and oral and maxillofacial radiologists (OMRs) in the detection and measurement of periapical lesions as depicted in cone beam computed tomography (CBCT) with 2 voxel sizes. Study Design. In total, 256 CBCT images of maxillary molars were evaluated by 2 endodontists and 2 OMRs. Images were obtained at voxel sizes of 0.2 and 0.4 mm. Observers evaluated 64 endodontically and 64 nonendodontically treated teeth for the presence of periapical lesions using a 5-point confidence scale. Weighted k values were calculated to determine intra- and interobserver agreement. Intraclass correlation coefficients (ICCs) were calculated to assess intra- and interobserver agreement in width and height measurements of the lesions. Results. Intraobserver agreement ranged from fair to almost perfect, with k values higher for the OMRs than for the endodontists. Interobserver agreement between endodontists ranged from fair to moderate at the 0.2mm voxel size and was slight at 0.4 mm. Agreement between OMRs was almost perfect at 0.2 mm and ranged from substantial to almost perfect at 0.4 mm. ICC was excellent for all observers in all conditions. Conclusions. Intra- and interobserver reliability was affected by voxel size and specialty. Correlation for measurements exhibited no variation.Item Effectiveness of two desensitizing products: A 6-month randomized clinical, split-mouth study(2020) Kerimova, Leyla; Kiremitci, Arlin; 33439563Purpose: This randomized controlled clinical trial compared the efficacy of a desensitizer containing calcium phosphate with a two-step self-etch adhesive and placebo over a 6-month period. Methods: 50 subjects aged between 2164 years with a sensitivity score of 6 or higher according to the Visual Analog Scale (VAS) in at least three teeth participated in this study. Teethmate Desensitizer, Clearfil SE Bond 2, and placebo (distilled water) were applied randomly to three teeth of each patient. Recall reviews were performed at baseline, 1 week, 1 month, 3 months, and 6 months after treatment, and the sensitivity scores were assessed by air-blast application. The normality of data was analyzed with Shapiro-Wilk. Since the placebo treatment was successful only in a small number of teeth, the three materials could only be compared 10 minutes after the treatment. Data were analyzed with Wilcoxon Test, Friedman and Dunn post-hoc tests (P= 0.05). Results: Sensitivity decreased significantly after application for each of the three test groups when compared to the pretreatment condition (P< 0.05). There were no significant differences between the Teethmate Desensitizer and Clearfil SE Bond 2, and both materials were more effective than the placebo (P< 0.05).Item Effects of various analgesics on the level of prostaglandin E2 during orthodontic tooth movement(2014) Tuncer, Zeynep; Polat-Ozsoy, Omur; Demirbilek, Muge; Bostanoglu, EbruAIM: The aim of this double-blind, randomized, placebo-controlled clinical study was to evaluate the analgesic effects of preoperative/postoperative ibuprofen and acetaminophen use after bonding and to find a relation between the pain level and the amount of prostaglandin released. MATERIALS AND METHODS: Forty-eight patients were included and randomly divided to three equal groups that received either ibuprofen, acetaminophen or placebo for pain relief. The pain levels were measured before bonding, after bonding, at first, second, third, and seventh days on a 100 mm visual analogue scale (VAS) and gingival crevicular fluid (GCF) samples were collected at the same time intervals to measure the amount of prostaglandin E2 (PGE2) released. PGE2 levels were determined with ELISA test. The results were evaluated with Wilcoxon and Kruskal-Wallis tests with Bonferroni correction. RESULTS: Acetaminophen and placebo groups showed similar pain levels during the first 2 days, whereas ibuprofen group showed lower pain levels during the first day after bonding. PGE2 levels did not show statistically significant difference in time within the analgesic groups. No significant relation between the pain perceived and PGE2 released was found. LIMITATIONS: The biggest limitation of this study is the subjective nature of pain and its method of evaluation. CONCLUSIONS: The perception of pain by patients taking ibuprofen and acetaminophen at pre/post appliance placement was not different from patients taking placebo. No time-related differences in PGE2 level were found between the groups and no significant correlation was found between the perception of pain and PGE2 levels.Item A Comparison of Er:YAG Laser with Photon-Initiated Photoacoustic Streaming, Nd:YAG Laser, and Conventional Irrigation on the Eradication of Root Dentinal Tubule Infection by Enterococcus faecalis Biofilms: A Scanning Electron Microscopy Study(2017) Gulsahi, Kamran; Ungor, Mete; Ozkaya, Burcu Ozses; Gocmen, Julide Sedef; 0000-0003-3510-7265; 29279728; ABG-7526-2020; AAF-7291-2021; AAX-5565-2021This study evaluated the antimicrobial efficacy of Er:YAG laser activation with photon-initiated photoacoustic streaming (PIPS), Nd:YAG laser disinfection, and conventional irrigation on Enterococcus faecalis biofilms using scanning electron microscopy (SEM). Biofilms were grown on 110 root halves and divided into the following: Groups 1 and 2 (saline and 1% NaOCl with apical position of PIPS, resp.), Groups 3 and 4 (saline and 1% NaOCl with coronal position of PIPS, resp.), Groups 5 and 6 (Nd: YAG laser after saline and 1% NaOCl irrigation, resp.) and Groups 7, 8, and 9 (conventional irrigation with 1% NaOCl, 6% NaOCl, and saline, resp.). SEM images of the apical, middle, and coronal levels were examined using a scoring system. Score differences between Groups 1 and 2 were insignificant at all levels in the remaining biofilm. Group 4 had significantly greater bacterial elimination than Group 3 at all levels. Differences in Nd: YAG laser irradiation between Groups 5 and 6 were insignificant. Groups 7 and 8 were insignificantly different, except at the middle level. Saline group had a higher percentage of biofilms than the others. In this study, PIPS activation with NaOCl eliminates more E. faecalis biofilms in all root canals regardless of the position of the fiber tip.