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 statistical
evaluation, an independent-sa . . .mples t-test was performed.
Results: The Turkish sample had a more retrognathic maxilla and mandible (p< 0.001 for SNA
and SNB) and a more vertical direction of facial development (p< 0.001), with Turkish males having
more retrusive lips (p< 0.001). Distinctive ethnic differences were found in craniofacial structures
between Turkish and Saudi young adults.
Conclusions: It is appropriate to consider these aesthetic differences when a Turkish or a Saudi
patient is being evaluated during routine diagnosis and treatment planning
Background: The aim of this study is to determine the relationship between the educational status of the parents who applied to the pediatric dentistry clinic and their approach to children’s oral-den- tal health. Methods: Questionnaire form with 8 question was used for parents. 226 parents which were selected randomly were included to the study. All parents gave their verbal assent to participation and infor- mation about questionnaire was given to them. The data were ana- lyzed by using chi-square tests. Results: The mean age for the mothers was 34,9, for the fathers was 39, for their children was 8,6. There was significant differ . . .ence search for ‘parents education status and who referred you to the pediatric dentistry clinic?’ (
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 vitro koşullarda değerlendirilmesi amaçla . . .nmıştır. Gereç ve Yöntemler: Çalışmada 20 adet örnek Güta-perka/MTA Fillapex, diğer 20 adet örnek ise Güta-perka/AH Plus ile doldurulmuştur. Bulgular: Boya sızıntı testi ile elde edilen sonuçlar istatistiksel olarak değerlendirildiğinde Güta-perka/MTA Fillapex, Güta-perka/AH Plus sistemine göre anlamlı düzeyde (
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 carious dentin was determined using a
lig . . .htmicroscope. The average intraobserver accuracy was 1.00 (perfect agreement) for CDD, 0.86 (excellent agreement) for ECM,
and 0.50 (good agreement) for LF. The average interobserver accuracy values were 0.92 (excellent agreement), (0.36 marginal
agreement) and 0.48 (good agreement), for CDD, ECM, and LF, respectively. The average specificity was 0.60 for CDD, 73% for
ECM, and 0.50 for LF. The average sensitivity was 0.55 for CDD, 0.85 for LF, and 0.47 for ECM. The average accuracy values were
0.53, 0.51, and 0.81 for CDD, ECM, and LF, respectively. LF had the greatest sensitivity and accuracy values of any of the methods
tested. As a conclusion, LF device is appeared to most reliable method in detection of remain caries in cavity. However, because
of its technical sensitivity it may susceptible to variations in measurements. To pay attention to the rule of usage and repeated
measurements can minimize such variations in clinical practice. It was concluded that LF is an improvement on the currently
available aids for residual caries detection
The aim of this study was to test the null hypothesis that increased irregularity of the mandibular incisors is associated with a reduction in the alveolar support on cone-beam computed tomographic sections.
From a sample of 1100 digital volumetric tomographs, 125 tomographs of subjects with Class I malocclusion (mean age, 21.6 ± 4.8 years) were selected for this study. An irregularity index was used to categorize these tomographs as having mild, moderate, or severe crowding. All tomographs were taken by using an iCAT (Imaging Sciences International, Hatfield, Pa) imaging device. The following parameters we . . .re measured on the sections corresponding to the 4 mandibular incisors with the iCAT software: height, thickness, and area of the entire symphysis; height, thickness, and area of the cancellous bone of the symphysis; and distance between the vestibular and lingual cortices. For the statistical evaluation, independent samples t test, analysis of variance, and the Tukey HSD test were used at an alpha level 0.05. The Pearson correlation coefficient and a simple linear regression were calculated to determine the relationship between mandibular anterior bony support and incisor crowding.
Almost all mandibular anterior bone measurements were greater in the male subjects than in the female subjects (height of the mandibular symphysis, P
Objective: To test the hypotheses that (1) there is no difference in mandibular asymmetry between
the crossbite and normal side in a unilateral crossbite group (UCG) and between the right and left
sides in a bilateral crossbite group (BCG) and a control group (CG); and (2) there is no significant
difference in mandibular asymmetry among crossbite groups and control group.
Materials and Methods: The cone-beam computed tomography scans of three groups were
studied: (1) 15 patients (6 male, 9 female; mean age: 13.51 6 2.03 years) with unilateral posterior
crossbite; (2) 15 patients (8 male, 7 female; mean age: 13.36 6 2.12 years) . . . with bilateral posterior
crossbite; and (3) 15 patients (8 male, 7 female; mean age: 13.46 6 1.53 years) as a control group.
Fourteen parameters (eight linear, three surface, and three volumetric) were measured. Side
comparisons were analyzed with paired samples t-test, and for the intergroup comparison, analysis
of variance (ANOVA) and Tukey tests were used at the P , .05 level.
Results: According to side comparisons, no statistically significant difference was found in the
UCG. There were statistically significant differences in hemimandibular (P 5 .008) and ramal (P 5
.004) volumes for the BCG and in ramal height (P 5 .024) and body length (P 5 .021) for the CG.
Intergroup comparisons revealed significant differences in hemimandibular (P 5 .002) and body
volume (P , .001) for the normal side of the UCG and left sides of the other groups, and in angular
unit length (P 5 .025) and condylar width (P 5 .007) for the crossbite side of the UCG and the right
sides of the other groups.
Conclusions: Contrary to UCG, CG and BCG were found to have side-specific asymmetry.
Skeletal components of the mandible have significant asymmetry among the crossbite groups and
Objective –The aim of this study was to evaluate the effects of local resveratrol
(RSVL) administration on bone formation in response to expansion of the interpremaxillary
suture, in rats.
Material and Methods – Twenty 50- to 60-day-old male Wistar rats were separated
into two equal groups. Both groups were subjected to expansion, and 30 cN of force
was applied to the maxillary incisors with helical-spring. Twenty-four hours after
appliance placement, single-dose 10 lmol ⁄ kg RSVL in the dimethylsulfoxide
(DMSO) was injected to the inter-premaxillary suture in the experimental group. In
the control group, the same amount of . . .DMSO was injected to the suture of rats. Bone
formation in the suture was evaluated histomorphometrically. The area of new bone
(lm2), the perimeter around the new bone (lm), Feret s diameter (lm), the
percentage of new bone to non-ossified tissue (%), and the number of osteoblast
were measured and compared. Mann–Whitney U-test was used for statistical
evaluation at p < 0.05 level.
Results – Statistically significant differences were found between the groups for all
histomorphometric parameters. New bone area (p < 0.001), bone perimeter
(p < 0.001), Feret s diameter (p < 0.001), percentage of new bone (p < 0.001), and
the number of osteoblast (p < 0.001) were significantly larger in the experimental
group when compared with the control. Bone histomorphometric measurements
revealed that bone architecture in the RSVL treated rats was improved.
Conclusions – Local application of RSVL during the early stages to orthopedically
expanded inter-premaxillary suture area may stimulate bone formation and shorten
the retention period, in rats
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 applied to Selçuk University Department . . .of Pediatric Dentistry with dental caries and mobility. According to his medical history he was born at month 7 of the pregnancy. He had a history of easy bruising and scarring after minimal trauma and presented a soft and hyperextensible skin. In addition, he had atrophic paper scars on the face, elbows, knees and shins; hypertelorizm on the face, ecchymosis on the lower legs and generalized joint laxity. Intraoral examination revealed pigmentation at gingival tissues, mobility at mandibular lateral and central incisors and supernumerary teeth in the area of left maxilla. Based on these findings the patient’s profile was consistent with classical type EDS. In this report a case with EDS is presented and also the clinical approach to his dental problems is emphasized
The aim of this experimental study was to evaluate
the effects of light-emitting diode-mediated-photobiomodulation
therapy (LPT), on the rate of orthodontic tooth movement (TM)
and orthodontically induced root resorption, in rats. Twentymale
12-week-oldWistar rats were separated into two groups (control
and LPT) and 50 cN of force was applied between maxillary left
molar and incisor with a coil spring. In the treatment group, LPT
was applied with an energy density of 20 mW/cm2 over a period
of 10 consecutive days directly over the movement of the first
molar teeth area. The distance between the teeth was measured
with a di . . .gital caliper on days 0 (T0), 10 (T1), and 21 (T2) on
dental cast models. The surface area of root resorption lacunae
was measured histomorphometrically using digital photomicrographs.
Mann–Whitney U and Wilcoxon tests were used for
statistical evaluation at p
Objective: The purpose of this retrospective radiographic study was to determine the reliability and reproducibility of skeletal and
dental measurements of lateral cephalograms created from a computerised tomography (CT) scan compared with conventional
and digital lateral cephalograms.
Methods: CT and conventional lateral cephalograms of the same patients were obtained from university archives. The lateral
cephalometric radiographs of 30 patients were manually traced. The radiographs were subsequently scanned and traced using
Dolphin Imaging software version 11 (Dolphin Imaging, Chatsworth, CA, USA). The CT-created lateral ceph . . .alograms were also
traced using the same software. Sixteen (10 angular and 6 linear) measurements were performed. Cephalometric measurements
obtained from conventional, digital and CT-created cephalograms were statistically compared using repeated measures analysis
of variance (ANOVA). Statistical significance was set at the p < 0.05 level of confidence.
Results: The intra-rater reliability test for each method showed high values (r > 0.90) except for mandibular length which had a
correlation of 0.82 for the CT-created cephalogram. Five measurements (N-A-Pog, N-S, ANS-PNS, Co-ANS and Co-Gn) were
found to be significantly different between the CT-created and conventional cephalograms and three measurements (SNB, ANB,
and /1-MP) were found to be significantly different between the CT-created and digital cephalograms.
Conclusions: There are statistically-significant differences in measurements produced using a traditional manual analysis, a direct
digital analysis or a 3D CT-derived cephalometric analysis of orthodontic patients. These differences are, on average, small but
because of individual variation, may be of considerable clinical significance in some patients
İzmir Katip Çelebi Üniversitesi, akademisyen ve lisansüstü öğrencilerinin iç ve dış paydaşlarla birlikte ürettikleri bilimsel çalışmalarını, Akademik Açık Arşivi'nde dijital olarak yayınlayarak, ülke ve dünya genelinde bilim topluluğuna açık erişim sağlamaktadır.
Akademik Açık Arşivi'nde bulunan tüm kaynaklar, telif haklarına saygı gösterilerek ve açık erişim ilkeleri doğrultusunda yayınlanmaktadır.
İzmir Katip Çelebi Üniversitesi, bilimsel bilgiye erişimi kolaylaştırarak, araştırma sonuçlarını ve bilimsel yayınları geniş bir kitleye sunarak bilimsel gelişmelere katkıda bulunmayı amaçlamaktadır.
Giriş işlemi için kütüphane hesabı kullanıcı adı ve şifrenizi veya UBYS bilgilerinizi kullanarak işleminize devam edebilirsiniz.
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.