Hikmetnur DANIŞMAN

Bildiri | 2022 | XVIII. Uluslararası Türk Ortodonti Derneği Kongresi , pp.123 - 123

Bildiri

Hikmetnur DANIŞMAN

Makale/Derleme | 2022 | Apos Trends in Orthodontics , pp.13 - 19

Objectives: The aim of this study is to apply a diamond-like carbon (DLC) coating on orthodontic brackets and to examine the effects of the coating on surface properties and friction. Material and Methods: 0.022-inch upper right canine brackets, 0.018-inch stainless steel wires, and 0.019 × 0.025-inch stainless steel wires were used in the study. Half of the brackets were treated with physical vapor deposition technique and coated with DLC. Different binary groups constituted of coated and uncoated brackets and wires were subjected to friction experiments using the Instron universal testing machine (Instron, Norwood, MA, USA). The s . . .urface properties of the coatings were evaluated using Raman, Scanning Electron Microscopy, and non-contact optical profilometer. Results: The friction force values between the DLC-coated brackets and the stainless-steel wires in both dimensions were found to be statistically significantly lower than the friction force between the uncoated brackets and the wires (P < 0.001). The surface roughness value, especially around the slot groove decreased significantly in the coated brackets (P < 0.05). DLC coating layer thickness is approximately 1.0 μm (806 nanometers). Conclusion: DLC coating improves the surface properties of orthodontic brackets, and DLC coating process remarkably reduced the friction force Daha fazlası Daha az

Hikmetnur DANIŞMAN

Makale/Derleme | 2023 | Orthodontics and Craniofacial Research ( 26 ) , pp.123 - 131

Objectives: To compare the skeletal and dental effects of different types of rapid maxillary expansion (RME) appliances using cone-beam computed tomography (CBCT). Materials/methods: This multi-centre study was conducted with a total of 56 patients. The sample consisted of two groups including the McNamara-Type RME (MNR) group with 30 patients (16 females, 14 males, mean age: 13.38 ± 1.16 years) and Full-Coverage RME (FCR) group with 26 patients (10 females, 16 males, mean age:13.78 ± 1.06 years). Twenty-one parameters were measured on CBCT images including 4 maxillary skeletal, 12 maxillary alveolar, and 5 maxillary dental measurem . . .ents, and the data were analysed using the SPSS 20.0 software. Results: The rates of increase in the palatal maxillary width (PMW) (3), PMW(4), and PMW(6) were significantly higher in the MNR group (P < .05). While the rates of increase in the buccal maxillary width (BMW) (3) and BMW(4) were statistically higher in the MNR group, the rate of increase in BMW (6) was higher in the FCR group (P < .05). The increases in HPW (4), HPW (6), PAA4(°), and PAA6(°), which are parameters about hard palate width (HPW) and palatal alveolar angle (PAA), were also significantly higher in the MNR group (P < .05). The increases in PAW (4) and PAW (6), referring to the widths between the palatal root apices were significantly higher in the MNR group (P < .05).The increase in Slope-6(°) was also higher in the MNR group (P < .05). Conclusion: Expansion in the palatal region on the alveolar level was higher in MNR than in FCR, while expansion in FCR was the highest in the posterior. In both appliances, there was tipping in the buccal direction in both alveolar bone and teeth, and the rate of this tipping was higher in MNR Daha fazlası Daha az

Hikmetnur DANIŞMAN

Makale/Derleme | 2023 | CLINICAL AND INVESTIGATIVE ORTHODONTICS 82 ( 4 ) , pp.194 - 203

Purpose: The aim of this investigation was to evaluate the reliability and accuracy of cephalo-metric measurements of the web-based artificial intelligence cephalometric analysis platform in comparison with the computer assisted cephalometric analysis method.Materials and Methods: 60 patients’ pretreatment lateral cephalograms were randomly selected. A total of 21 landmarks were identified by one operator and a total of 20 parameters were measured both AI based platform WebCeph® and Dolphin Imaging®. Measurements of AI landmarking were recorded. Then, the landmarks placed automatically by the AI (AI land-marking) were corrected manu . . .ally (manual landmarking). All the measurements were recorded and performed once more after 4-weeks. Correlation between repeated measurements was evaluated by using the Pearson correlation coefficient. Paired t-test was used for comparisons between groups.Results: Most of the measurements showed statistically significant differences between AI landmarking and manual landmarking 1, except for the angular measurements of the U1-SNº (P = 0.717), interinsizal angle (P = 0.410), and L1-NBº (P = 0,295). Most of the measurements were found to be statistically similar between manual landmarking 1 and manual landmarking 2, except for the angular measurement of the SN-GoGnº, IMPAº, linear measurements ANS-Me. The Pearson correlation coefficients of all cephalometric measurements were above 0.80.Conclusions: All mean differences between the manual landmarking 1 and AI landmarking measurements were less than 2 degrees/2 mm, except for the nasolabial angle. Although WebCeph’s artificial intelligence algorithm is not sufficient to accurately determine the position of soft tissue landmarks, it becomes more suitable for clinical use with the control and manual correction of landmarks by observers Daha fazlası Daha az

Hikmetnur DANIŞMAN

Makale/Derleme | 2022 | Current Research in Dental Sciences32 , pp.208 - 214

Objective: The aim of this study was to evaluate the effects of parents’ divorce on temporomandibular disorders (TMDs) and quality of life in adolescents. Methods: The study was conducted with 200 patients (124 female, 76 male), 98 of whom had married parents, and 102 of whom had divorced parents. The mean age of the patients was 16.17 ± 1.42 years. The study was a questionnaire study, and Fonseca Questionnaire and Oral Health Impact Profile-14 (OHIP-14) forms were used. Results: It was found that patients whose parents were divorced had higher mean Fonseca TMD and OHIP-14 scores than patients whose parents were married. There is no . . . statistically significant difference between the Fonseca and OHIP-14 scores of females and males whose parents were divorced and married. Conclusion: The adolescents whose parents were divorced had statistically significantly higher means of the Fonseca TMD and OHIP-14 scores than those with married parents, and these adolescents had a higher rate of having moderate Fonseca TMD. Amaç: Bu çalışmanın amacı, ebeveyn boşanmasının adölesanlarda temporomandibular bozukluk ve yaşam kalitesi üzerindeki etkilerini değerlendirmektir. Yöntemler: Çalışma 98'i evli anne babaya sahip, 102 ‘si anne babası boşanmış 200 hasta (124 kadın, 76 erkek) ile yapılmıştır. Hastaların yaş ortalaması 16,17 ± 1,42 yıl idi. Çalışma anket çalışması olup, Fonseca Anketi ve Ağız Sağlığı Etki Profili-14 (OHIP-14) formları kullanıldı. Bulgular: Anne-babası boşanmış hastaların Fonseca TMD ve OHIP-14 puan ortalamalarının, anne-babası evli olan hastalara göre daha yüksek olduğu bulunmuştur. Anne-babası boşanmış ve evli olan kadın ve erkeklerin Fonseca ve OHIP-14 puanları arasında istatistiksel olarak anlamlı bir fark yoktur. Sonuç: Anne-babası boşanmış ergenlerin Fonseca TMD ve OHIP-14 puan ortalamaları evli ebeveynlere göre daha yüksek olup bu farklar istatistiksel olarak anlamlıdır ve bu ergenlerin orta düzeyde Fonseca TMD'ye sahip olma oranı daha yüksekti Daha fazlası Daha az