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Bulunan: 39 Adet 0.003 sn
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Cone-beam computed tomography assessment of mandibular asymmetry in unilateral cleft lip and palate patients

İLKNUR VELİ

Objective: To determine whether there is any difference between the cleft and non-cleft sides of the mandible in unilateral cleft lip and palate (UCLP) patients, or the right and left sides in control patients; and to determine if there is any difference between the mandibular asymmetry of UCLP patients and that of control patients. Methods: We examined cone-beam computed tomography (CBCT) scans of 15 patients with UCLP and 15 age- and gender-matched control patients. We evaluated 8 linear, 3 surface, and 3 volumetric measurements and compared the cleft/non-cleft sides of UCLP patients an ...Daha fazlası

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Effects of modified and conventional facemask therapies with expansion on dynamic measurement of natural head position in Class III patients

TANCAN UYSAL

Introduction: The aim of this prospective clinical trial was to assess the effects of varying force directions on the dynamic measurement of natural head position and orofacial airway dimensions of Class III patients during maxillary orthopedic protraction compared with an untreated control group. Methods: The conventional facemask group comprised 15 patients (8 girls, 7 boys; mean age, 9.6 6 1.3 years), the modified facemask group comprised 15 patients (7 girls, 8 boys; mean age, 9.5 6 1.5 years), and the control group comprised 15 subjects (7 girls, 8 boys; mean age, 9.8 6 1.6 years). N ...Daha fazlası

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Comparison of craniofacial morphology, head posture and hyoid bone position with different breathing patterns

TANCAN UYSAL

Objectives: The aim of this study was to evaluate differences in craniofacial morphology, head posture and hyoid bone position between mouth breathing (MB) and nasal breathing (NB) patients. Methods: Mouth breathing patients comprised 34 skeletal Class I subjects with a mean age of 12.8 ± 1.5 years (range: 12.0–15.2 years). Thirty-two subjects with skeletal Class I relationship were included in the NB group (mean 13.5 ±1.3 years; range: 12.2–14.8 years). Twenty-seven measurements (15 angular and 12 linear) were used for the craniofacial analysis. Additionally, 12 measurements were evalu ...Daha fazlası

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Low-shrinking composites. Are they reliable for bonding orthodontic retainers?

TANCAN UYSAL

To evaluate the shear bond strength (SBS), fracture mode, wire pull out (WPO) resistance and microleakage between low-shrinking and conventional composites used as a lingual retainer adhesive. Methods: A total of 120 human mandibular incisor teeth, extracted for periodontal reasons, were collected. Sixty of them were separated into two groups. To determine the SBS, either Transbond-LR (3M-Unitek) or Silorane (3M-Espe) was applied to the lingual surface of the teeth by packing the material into standard cylindrical plastic matrices (Ultradent) to simulate the lingual retainer bonding area. To t ...Daha fazlası

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Ethnic differences in dentofacial relationships of Turkish and Saudi young adults with normal occlusions and well-balanced faces

TANCAN UYSAL

Objectives: The aims of the present study were (1) to determine ethnic differences in craniofacial dimensions between Turkish and Saudi populations and (2) to identify possible gender differences between males and females, based on a sample of untreated young adult subjects with normal occlusions and well-balanced faces. Methods: In total, 163 cephalometric radiographs were traced and evaluated to compare untreated adults of Turkish and Saudi ethnicity. The Turkish group comprised 86 subjects; 45 females and 41 males. The Saudi group comprised 77 subjects; 39 females and 38 males. For st ...Daha fazlası

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Açık apeksli dişlerde MTA fillapex'in apikal sızıntıya etkisinin değerlendirilmesi

MERVE AKÇAY

Amaç: Nekrotik pulpalı immatür dişlerde kök ucunun açık olması, kök kanal sisteminin geniş ve kök ucuna doğru genişleyerek sonlanması nedeniyle bu dişlerde endodontik tedavi ile etkili bir apikal tıkama oluşturulması oldukça zordur. Bu yüzden bu dişlerin endodontik tedavilerinde kullanılacak kök kanal dolgu sisteminin apikal tıkama özelliği önem kazanmaktadır. Çalışmamızda hazırlanan simule immatür dişlerde yeni üretilmiş MTA Fillapex kanal dolgu patının Güta-perka ile birlikte kullanımı ve oluşturduğu apikal tıkamanın etkinliği Güta-perka/AH Plus kanal dolgu sistemi ile karşılaştırılarak in v ...Daha fazlası

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An In Vitro Comparison of Different Diagnostic Methods in Detection of Residual Dentinal Caries

EBRU KÜÇÜKYILMAZ

The aim of this study was to investigate the efficiency of different diagnostic methods in detection of residual dentinal caries in excavated cavities. Fifty extracted molar with deep dentinal carious lesions were excavated using a slow-speed handpiece. All cavities were assessed by laser fluorescence(LF) device, electronic caries monitor(ECM), and caries detector dye(CDD) by three independent observers blindly. The measurements were repeated after two weeks. Specimens containing dentin slices 150 μm in thickness were prepared for histological analyses. The existence and absence of car ...Daha fazlası

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Treatments of horizontal root fractures: four case reports

EBRU KÜÇÜKYILMAZ

Horizontal root fractures are rare in comparison to other types of injuries and the reported prevalence in the literature is between 0.5% and 7%. The treatment and prognosis of root fractures depend on many variables, the most important being the length of time between trauma and treatment, degree of dislocation and mobility, site of fracture, fixation period, stage of root development, age of patient, and quality of treatment. The ideal healing type is hard tissue healing. The aim of these case reports is to present four different patients who had horizontal root fractures of imma ...Daha fazlası

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Ehlers-danlos sendromu : olgu sunumu

EBRU KÜÇÜKYILMAZ

Ehlers Danlos Syndrome (EDS) is a connective tissue disease that has effect on the structure and function of collagen. Collagen is a fibrous protein that is one of the main building structures of connective tissues such as skin, tendon, bone and cartilage. Connective tissue requires all type of collagen to function correctly. People with EDS may show symptoms such as skin hyperelasticity, joint hypermobility, increased tendency to bruise and abnormal scarring. Dental findings have been reported with some types of EDS. This case report describes the dental findings of a patient (10, c?) who ...Daha fazlası

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Influence of soft drinks on dental enamel: An in vitro study

EBRU KÜÇÜKYILMAZ | | | |

This in vitro study was to evaluate the erosive potential of four soft drinks at different times on bovine teeth by profilometry. Bovine incisors buccal side was sectioned with a diamond saw and a total of 100 enamel blocks were prepared (8 × 4 × 0.5 mm). Five specimens each were exposed to 60 ml of soft drinks (Sprite, Coca Cola, Cappy-orange and Ayran) for 15, 30, 60, 120 and 180 minutes in a continuously vibrating soft drinks bath in a beaker at room temperature. Surface loss of the specimens was determined with a profilometry. The data were analyzed by two-way analysis of variance and Tuke ...Daha fazlası

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MTA-fillapex'in radyoopasitesinin gri MTA ile karşılaştırmalı olarak değerlendirilmesi

MERVE AKÇAY

Amaç: Bu çalışmada MTA-Fillapex'in radyoopasitesinin dijital görüntüleme tekniği kullanılarak, Gri MTA ile karşılaştırmalı değerlendirilmesi amaçlandı. Gereç ve Yöntemler: Çalışmada Gri MTA Angelus'un ve MTA-Fillapex'in (Angelus, Londrina, Brezilya) opazitesi değerlendirildi. Örneklerin yerleştirilmesi için 1 mm derinliğinde ve 5 mm çapında 5 akrilik levha hazırlandı. Akrilik levhalar üzerinde ayrıca alüminyumdan yapılmış penetremetre yerleştirilerek opasite yoğunluğu hesaplandı. Radyografik değerlendirme, direkt dijital görüntüleme tekniği ile yapıldı. Tüm radyograflar sıkıştırma algoritması ...Daha fazlası

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Farklı kanal dolgu patlarının koronal sızıntıya etkisinin karşılaştırmalı olarak değerlendirilmesi

MERVE AKÇAY

Amaç: Koronal örtücülük, endodontik tedavinin başarısını ve periapikal doku sağlığını etkileyen kritik bir faktördür. Gereç ve Yöntemler: Çalışmamızda yeni üretilmiş MTA Fillapex kanal dolgu patının Güta-perka ile birlikte kullanımı ve oluşturduğu koronal tıkamanın etkinliği Güta-perka/AH Plus kanal dolgu sistemi ile karşılaştırılarak in vitro koşullarda değerlendirilmiştir. Çalışmada 20 adet örnek Güta-perka/MTA Fillapex, 20 adet örnek Güta-perka/AH Plus ile doldurulmuştur. Bulgular: Boya penetrasyon testi ile elde edilen sonuçlar istatistiksel olarak değerlendirildiğinde Güta-perka/MTA Filla ...Daha fazlası

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