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    2016-2020 Yillari Arasinda Yazilmis Ortodonti Uzmanlik ve Doktora Tezlerinin Yayinlanma Oranlarinin Incelenmesi
    (Zonguldak Bülent Ecevit Üniversitesi, 2022) Özkalayci, Nurhat; Yolcu, Irem; Töz, Melis; Çiçek, Orhan
    Dis hekimliginde lisansüstü uzmanlik ve doktora tezleri, birçok bilimsel adimdan ilkidir. Ülkemizde dis hekimliginde uzmanlik ve doktoraegitimlerini bitirebilmek için tez yazmak ve yazilan tezi savunmak zorunludur. Tezlerin yayinlanmasi ise, yeni bilginin bilim camiasindayayilmasini saglar. Çalismamizda 2016-2020 yillari arasinda yazilan, merkezi sinav ile alinan 377 dis hekimligi uzmanlik ögrencisi ileüniversitelerin kendi bünyelerinde yaptiklari sinav ile alinan 149 doktora ögrencisinin tezleri incelenmistir. Degerlendirilen tezlerin teslimtarihleri, arastirma tipleri, danisman ögretim üyelerinin unvanlari, yapildigi üniversiteler, çalismalarin konulari ve yayinlanma durumlarikaydedildi. Tezlerin yayin durumu, Pubmed ve Google Akademik arama motorlari kullanilarak ve Dergi Park üzerinden yazar adi,danisman adi, tez basliklari Türkçe ve Ingilizce taranarak degerlendirildi. IBM SPSS 26.0 programi kullanilarak Ki-kare istatistiksel analiziyapildi. Yayinlanan tezler dergi kapsamina göre SCIE/ ESCI indeksli dergiler, diger ulusal dergiler ve diger uluslararasi dergiler seklindeincelenerek yayinlanma oranlari yüzdelik oran olarak hesaplandi. %71,67’si uzmanlik tezi ve % 28,32’si doktora tezi olan toplam 526 tezinyayinlanma oranlarinin doktora tezlerinde % 26,17 iken, uzmanlik tezlerinde ise % 17,5 oldugu görüldü.
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    Comparison the Effects of Lingual and Labial Fixed Orthodontic Appliances: A Retrospective Study
    (Ondokuz Mayis Üniversitesi, 2023) Özkalayci, Nurhat; Çiçek, Orhan; Ocak, Yunus
    Objective: The aim of this study is to compare the effects of lingual and labial orthodontic appliances on patient comfort and daily life.Materials and Methods: A total of 30 patients, according to appliance type, two groups were considered. Lingual brackets were used with respect to total of 15 patients including 9 girls and 6 boys for Group 1 and labial brackets were taken into account for 15 patients with 8 girls and 7 boys for Group 2. Questionnaire forms filled in the T0(1st day), T1(7th day) and T2(14th day) periods of all patients were evaluated. Parameters related to pain level, speech difficulty, tongue trauma, eating difficulty, brushing difficulty, time to first notice of aligning in teeth, social environment reaction, treatment satisfaction and necessity of treatment were examined according to the values marked on a scale from 1 to 10 in the questionnaire forms. Statistical analyzes were performed with one-way Anova, Welch's t-test and paired-sample t-test.Results: While there was no significant difference in pain level and brushing difficulty in T0 between the groups(p> 0.05), speech difficulties, tongue trauma and eating difficulties were significantly higher in Group 1 than Group 2(p< 0.05). Significant decrease were observed in pain level, and difficulty in speaking, eating and brushing at T0-T1, T0-T2 and T1-T2 periods(p< 0.05).Conclusion: Lingual brackets caused more speech, tongue trauma and eating difficulties, especially in the first days of treatment. It was observed that the discomforts caused by both appliances were decreased over time.
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    Evaluation of Facial Aesthetics In Young-Adult Turkish Society
    (Gazi Üniversitesi, 2024) Yolcu, Irem; Çiçek, Orhan; Özkalayci, Nurhat
    OBJECTIVE: In the study; it is aimed to obtain soft tissue parameters of young adult individuals, which are liked by the society, instead of the concept of normal used in the orthodontic literature, which can help diagnosis and treatment planning.MATERIALS AND METHOD: In the study; profile and frontal photographs of 88 women and 61 men, aged between 20-31, who had no facial asymmetry and no trauma history, were used. Profile and frontal photographs of the participants were turned into a survey via Google forms; it was presented to the panel that included 4 orthodontists, 4 dentists, 4 plastic surgeons, 4 architects and 4 non-professional individuals. Panelists were asked to rate the photographs on a scale of 1-10. As a result of scoring; while 13 individuals with 7 points or more formed the attractive group, 13 individuals with 3 points or less formed the unattractive group. Angular measurements, vertical and horizontal distances were measured and compared to each other on 26 individuals. According to the scoring results, male individuals were excluded from the study because the number of males constituting the attractive group was insufficient. Normal distribution of data was evaluated statistically by Shapiro-Wilk test, and inter-group comparison was evaluated using Mann Whitney U-test (p<0.05).RESULTS: As a result of the frontal analysis; while the ratios of face width to face height, alar wing width to nasal height and bigonial width to mouth width were statistically higher in attractive individuals; the ratio of intercanthal width to facial width was found to be lower (p<0.05). As a result of profile analysis; while total vertical angle, nasal angle, middle and lower facial triad angles were found to be statistically lower in attractive individuals; facial convexity angle was higher (p<0.05).CONCLUSION: Vertical growth pattern of the face, nasal tip position, facial convexity and harmony in the vertical and transversal ratios of the face are among the factors that determine facial attractiveness in women.
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    FONKSİYONEL TEDAVİSİ TAMAMLANMIŞ İSKELETSEL SINIF 2 HASTALARIN SAGİTTAL HAVAYOLUNUN RETROSPEKTİF SEFALOMETRİK BÜYÜME DEĞİŞİKLİKLERİNİN İNCELENMESİ
    (2023) Ay, İbrahim Berat; Çiçek, Orhan; Ozkalayci, Nurhat
    Bu çalışmanın amacı, fonksiyonel tedavi sonrası sagittal havayolu boyutlarında meydana gelen değişikliklerin karşılaştırılmasıdır. Çalışmaya; 47 erkek ve 54 kız toplam 101 hasta dahil edildi. Gruplar; cinsiyet ve aparey tipine göre oluşturuldu.65 adet hareketli (monoblok) ve 36 adet sabit (ForsusTM) aparey kullanılmış hastalarda Sella-Nasion-A açısı (SNA), Sella-Nasion-B açısı (SNB), ve A-Nasion-B açısı (ANB)ve havayolu boyutlarında; alt havayolu boyutu (PNS-AD1), üst havayolu boyutu(PNS-AD2), alt adenoid doku boyutu (AD1-BA), üst adenoid doku boyutu (AD2-HO), üst faringeal boşluk (SPS), orta faringeal boşluk (MPS) ve alt faringeal boşluk (IPS) ölçülerek kaydedildi. Erkeklerde, faringeal boşlukların tümünde anlamlı artma gözlendi (p<0.05). Kızlarda ve hareketli aparey grubunda, üst ve alt faringeal boşluklarda anlamlı artma görülürken, sabit aparey grubunda sadece alt faringeal boşlukta anlamlı artma gözlendi (p<0.05). Tüm gruplarda, anlamlı şekilde SNA ve ANB açılarında azalma ve SNB açılarında artma gözlendi (p<0.05). SNB’de artma ve ANB’de azalma miktarı hareketli aparey grubunda sabit aparey grubuna göre anlamlı şekilde daha fazla bulundu (p<0.05). İskeletsel sınıf 2 maloklüzyonların fonksiyonel tedavisiyle, hem sagittal havayolu boyutlarında anlamlı artışlar sağlanırken hem de normal büyüme ve gelişmenin yönlendirildiği görüldü.
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    Ortodontik Nikel-Titanyum kapali yaylarin, elastomerik zincirlerin ve aktif Tie-Backlerin zamana göre kuvvet kayiplarinin in-vitro karsilastirilmasi
    (Gazi University, 2024) Aydin, Emine; Çiçek, Orhan; Özkalayci, Nurhat
    AMAÇ: Ortodontik kuvvet elemanlarindan nikel-titanyum kapali yaylarin, elastomerik zincirlerin ve aktif tie- backlerin zamana göre kuvvet kayiplarinin yapay tükürük içeren in vitro ortamda karsilastirmaktir.GEREÇ VE YÖNTEM: Çalismada 3 farkli markadan elastomerik zincirler, Ni-Ti kapali yaylar ve aktif tie-backler 9 gruba ayrildi. Örneklerin yapay tükürük içeren in vitro ortamda zamana bagli kuvvet kayip yüzdeleri karsilastirildi. Kuvvet degerleri baslangiçta, 1. saatte, 24. saatte, 7. günde, 21. günde ve 28. günde ölçüldü ve kaydedildi. Elde edilen veriler Kolmogorov-Smirnov, Kruskal Wallis, Mann- Whitney U ve Wilcoxon testleri ile istatistiksel analize tabi tutuldu. Anlamlilik degeri p<0.05 olarak kabul edildi.BULGULAR: Baslangiçta en fazla ve en az kuvvetler sirasiyla elastomerik zincirlerde ve nikel-titanyum kapali yaylarda ölçüldü (p<0.05). 24. saatte yapilan ölçümlerde elastomerik zincirler, nikel-titanyum kapali yaylar ve aktif tie-back’ler arasinda anlamli farklilik bulunmadi (p>0.05). 28. günde tüm gruplarda anlamli kuvvet kayiplari ölçülse de, aktif tie-backlerde elastomerik zincirlere göre markadan bagimsiz olarak anlamli sekilde daha az kuvvet kaybi ölçüldü (p<0.05). 28. günde en az ve fazla kuvvetler sirasiyla elastomerik zincirlerde ve Ni-Ti kapali yaylarda ölçüldü (p<0.05).SONUÇ: Ortodontik bosluk kapatma mekaniklerinden, nikel-titanyum kapali yaylar en stabil olmak üzere, aktif tie-backlerin elastomerik zincirlere göre daha stabil bir kuvvet uyguladigi dolayisiyla kullanilan kuvvet elemani tipinin kuvvet kaybi düzeyinde temel belirteç oldugu görüldü.
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    The Effects of Different Types of Surface Conditioning Methods on Enamel Demineralization: An In-vitro Rebonded Bracket Study
    (2023) Acır, Kemal Can; Çiçek, Orhan; Ozkalayci, Nurhat
    Aim: This study aimed to evaluate the effects of the conventional etching and primer (CEP) method and the self-etching primer (SEP) method on demineralization while rebonding the brackets. Material and Methods: Sixty extracted maxillary first premolar teeth were divided into 4 groups, each containing 15 teeth. The teeth in Groups 1 and 2 were bonded using CEP, and those in Groups 3 and 4 were bonded using SEP. After the first bonding, adjacent surfaces of the brackets were measured using DIAGNOdent pen, and demineralization values were recorded (T0). The teeth were kept in a demineralization solution for 15 days in a 37°C incubator. Then, all brackets were debonded. The teeth in Groups 1 and 3 were rebonded using CEP, and those in Groups 2 and 4 were rebonded using SEP. In this way, via the enamel surface conditioning prior the first bonding and rebonding, the groups were constructed as; Group 1 (CEP-CEP), Group 2 (CEP-SEP), Group 3 (SEP-CEP) and Group 4 (SEP-SEP). The teeth were kept in the same solutions by same way (T1). The Kolmogorov-Smirnov test was used to determine whether or not the data were normally distributed, the Wilcoxon test was used for comparisons within groups, and the Mann-Whitney U and Kruskal-Wallis tests were used for comparisons between groups. p<0.05 was considered significant. Results: At T1, the demineralization values in Group 1 obtained from all surfaces were found to be significantly higher than those in Groups 3 and 4 (p<0.05). The amount of increase in demineralization between T0 and T1 was observed to be the greatest on the gingival surfaces and the smallest on occlusal surfaces in all groups. Regardless of the enamel surface measured, the mean increase in values on all surfaces was the highest in Group 1 and the lowest in Group 4. Conclusion: Considering the effects of orthodontic bracket rebonding on the enamel surface, the self- etching primer method produces less enamel demineralization than the conventional etching and primer method.