Yazar "Gungor, Ahmet Yalcin" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Öğe
    Cephalometric evaluation of children with familial Mediterranean fever
    (E H Angle Education Research Foundation, Inc, 2012) Gungor, Ahmet Yalcin; Arica, Vefik; Gungor, Ozge; Tutanc, Murat
    Objective: To test the null hypothesis that no differences exist in craniofacial morphology between patients with familial Mediterranean fever (FMF) and the healthy population. Materials and Methods: Standardized lateral cephalograms of 32 FMF patients (mean age, 11.50 +/- 2.72 years) and 32 healthy controls (mean age, 11.86 +/- 2.19 years) were obtained. Cranial and dentofacial parameters were measured using a cephalometric analysis program (Nemoceph Imaging Cephalometric and Tracing Software S.L., Spain). All statistical analyses were conducted using SPSS version 17.0.0 (SPSS Inc., Chicago, Ill). Descriptive statistics were calculated for all measurements, and the independent t-test was used to evaluate intergroup differences. Results: The ANB angle was significantly greater in the FMF group (P < .05). Differences in SNA and SNB angles were insignificant. Anterior (P < .001) and posterior (P < .05) face heights were significantly shorter in the FMF group. Mandibular body length (P < .001) and condylion to gnathion (P <.05) measurements were significantly shorter in the FMF group. The upper lip was more protrusive in the FMF group (P <.05). U1 NA (mm; P < .001) and L1-NB (mm; P <.05) measurements were significantly shorter in the FMF group. Conclusion: The hypothesis is rejected. Significant differences exist between the craniofacial morphology of patients with FMF and the healthy population. (Angle Orthod. 2012;82:552-555.)
  • Küçük Resim
    Öğe
    Effects of different intracoronal bleaching methods on shear bond strengths of orthodontic brackets
    (E H Angle Education Research Foundation, Inc, 2012) Gungor, Ahmet Yalcin; Ozcan, Erhan; Alkis, Huseyin; Turkkahraman, Hakan
    Objective: To evaluate the effects of different intracoronal bleaching methods on the shear bond strengths (SBS) of orthodontic brackets. Materials and Methods: Sixty freshly extracted mandibular incisors were randomly divided into four groups (n = 15 per group). After filling the root canals, root fillings were removed 2 mm apical to the cementoenamel junction, and a 2-mm-thick layer of zinc-phosphate cement base was applied. Group 1 served as the control. Intracoronal bleaching was performed with hydrogen peroxide (Opalacence Endo, Ultradent products Inc, South Jordan, Utah) in group 2, sodium perborate (Sultan Healthcare, Englewood, NJ) in group 3, and 37% carbamide peroxide (Whiteness Super Endo, Dentscare, Itda, Joinville, Brazil) in group 4. Orthodontic brackets were bonded with a light cure composite resin and cured with an LED light. After bonding, the SBS of the brackets was tested with a Universal testing machine. Results: Analysis of variance indicated a significant difference between groups (P < .001). The highest values for SBS were measured in group 1 (10.15 +/- 1.15 MPa). The SBS was significantly lower in groups 2,3, and 4 than in group 1 (P < .001). The lowest values for SBS were measured in group 3 (6.17 +/- 0.85 MPa). SBS was significantly higher in group 4 than in group 3 (P < .05). Conclusions: Intracoronal bleaching significantly affected the SBS of orthodontic brackets on human enamel. Bleaching with sodium perborate affects SBS more adversely than does bleaching with other agents. (Angle Orthod. 2012;82:942-946.)