40 research outputs found
Craniofacial Evaluation of Class I Turkish Adults: Bimler Analysis
Objective:The aim of this study was to evaluate the facial type and skeletal relationships of Class I Turkish male and female adults by using Bimler cephalometric analysis.Materials and Method:The study sample included 82 randomly selected Turkish adults (42 female, 40 male) with an age range of 18–23 years. Cephalometric measurements defined by Bimler were used to determine skeletal relationships, including his suborbital facial index on lateral cephalometric radiographs. Variance analysis (ANOVA) was used for statistical assessment of the results.Results:The whole sample was found to be in the medium range according to Bimler. For all parameters, except the mandibular flexion (Cgo/CV), which showed hyperflexion with a mean 4.23° in female patients and 3.78° in male patients, Turkish adults show appropriate characteristics as defined by Bimler. There were no significant differences between men and women in most of the angular and linear measurements. Craniofacial height and depth values were significantly higher in men, showing a sex-based difference (p<0.001), whereas differences between the sexes concerning suborbital facial index (H/D) were nonsignificant.Conclusions:Ranges of Turkish population show similarity to those reported by Bimler. The whole sample was found to be in the medium range according to Bimler. Craniofacial height and depth values were significantly higher in men, showing sex-based difference. The mandible showed hyperflexion in both groups which indicates reduction of the height of the middle part of the face
Distribution of sagittal occlusal relationships in different stages of dentition.
The aim of this study was to assess the distribution of sagittal occlusal relationships in different dentition periods in a Turkish sample group. In total, 1,110 patients (561 females, 549 males) aged 4.6-23 years were randomly chosen after intraoral clinical examination. The subjects were classified according to their sagittal occlusal relationships and four dentition stages -deciduous, early mixed, late mixed, and permanent dentition. The statistical significance of the occurrence of malocclusion types in dentition stages was evaluated by Chi-square and Fischer's exact tests. Class I malocclusion was observed at the highest rate in all dentition stages. Class III malocclusion was observed at the highest rate in the permanent dentition, whereas Class II malocclusion was observed at the highest rate in the late mixed dentition. The rates of Class I, II, and III malocclusions were similar in males and females. Our study reveals that the prevalence of malocclusion and need for orthodontic treatment has increased in the population towards the permanent dentition
Cysteamine Verilen Sıçan Duodenum’unda Kükürtdioksit İnhalasyonunun Antioksidan Durum ve Histopatolojik değişiklikleri
Distribution of sagittal occlusal relationships in different stages of dentition
The aim of this study was to assess the distribution of sagittal
occlusal relationships in different dentition periods in a Turkish
sample group. In total, 1,110 patients (561 females, 549 males) aged
4.6-23 years were randomly chosen after intraoral clinical examination.
The subjects were classified according to their sagittal occlusal
relationships and four dentition stages -deciduous, early mixed, late
mixed, and permanent dentition. The statistical significance of the
occurrence of malocclusion types in dentition stages was evaluated by
Chi-square and Fischer's exact tests. Class I malocclusion was observed
at the highest rate in all dentition stages. Class III malocclusion was
observed at the highest rate in the permanent dentition, whereas Class
II malocclusion was observed at the highest rate in the late mixed
dentition. The rates of Class I, II, and III malocclusions were similar
in males and females. Our study reveals that the prevalence of
malocclusion and need for orthodontic treatment has increased in the
population towards the permanent dentition
Deneysel ülser ve kükürtdioksit inhalasyonu:Akciğer ve Mide proaoksidan metobolizma değişiklikleri. Turkish Journal of Biochemistry
Aortic valve perforation and mitral valve chordal rupture as a complication of previous infective endocarditis
Does Gender Have an Effect on Craniofacial Measurements?
The aim of this cross-sectional study was to evaluate craniofacial structures in terms of different sagittal relations and gender in adolescent individuals
Examination of Antioxidant Enzyme Activities and Histopathology in Rat Stomach in Sulfur Dioxide Exposed and Experimental Ulcer.
Biocompatibility of nanosilver-coated orthodontic brackets: an in vivo study
Background: Nanosilver particles of which antibacterial and antifungal
properties have been shown in various in vitro and in vivo studies are
used in many medical and dental fields for the prevention of infection.
In this study, it is intended to evaluate the biocompatibility of
nanosilver-coated brackets.
Methods: Nanosilver coating process was applied to the standard
orthodontic brackets by a physical vapor deposition system. Brackets
were coated with nanosilver particles of 1 mu thickness. A total of 12
Wistar Albino rats were included in the study (six) and control (six)
groups. For the study and control groups, four nanosilver-coated and
four standard brackets were aseptically implanted subcutaneously in the
dorsal region of each rat. The brackets were removed with the
surrounding tissues on days 7, 14, 30, and 60. The specimens were
evaluated for inflammatory response.
Results: No significant difference was found in terms of tissue reaction
between the study and control groups. On day 7, randomly distributed
brown-black granules were seen in the granulation tissue adjacent to the
bracket in the study group. These foreign particles continued along the
bracket cavity in a few samples, but the inflammatory response was
insignificant between the groups. Mast cell count was found to be
significantly smaller only on day 7 in the study group than in the
control group.
Conclusions: Nanosilver-coated orthodontic brackets were found to be
similar with the standard type concerning inflammation. Further
researches are needed with regard to the assessment of the brown-black
granules, especially on the deposition of the vessel walls
Nanosilver coated orthodontic brackets: in vivo antibacterial properties and ion release
Introduction: Silver nanoparticles are currently utilized in the fields
of dentistry. The aim of this study was to evaluate the antibacterial
properties and ion release of nanosilver coated orthodontic brackets
compared to conventional brackets.
Methods: Nanosilver coating process was applied to standard orthodontic
brackets placed on the mandibular incisors of Wistar Albino rats in the
study group and conventional brackets in the control group. Dental
plaque, mucosal vestibular smears, saliva, and blood samples were
collected from rats at various days. The amounts of nanosilver ions in
blood and saliva were measured and microbiological evaluation was made
for Streptococcus mutans. For testing cariogenicity, all rats were
sacrificed at the end of 75 days under anaesthesia. Teeth were stained
using a caries indicator, then the caries ratio was assessed.
Results: Nanosilver coated orthodontic bracket favoured the inhibition
of S. mutans on Day 30 and reduction of caries on the smooth surfaces.
The nanosilver amounts in the saliva and serum samples were
significantly higher in the study group on Day 7.
Conclusion: It is suggested that nanosilver coated orthodontic brackets,
as an antibacterial agent without patient compliance, could be helpful
for the prevention of white spot lesions during fixed orthodontic
treatment