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    Öğe
    Distalization of Mandibular Molars Using Mini-Plate Anchorage Fixed on Ramus: Case Report
    (Aves Press Ltd, 2006) Uysal, Tancan; Gelgor, Ibrahim Erhan; Sari, Zafer; Dolanmaz, Dogan
    Distalization of the lower molars has been one of the most difficult biomechanical problems in the orthodontic treatments. Nowadays it has become possible to move mandibular molars distally with temporary skeletal anchorage systems to correct mandibular crowding and dental asymmetries without lower premolars extraction. In this study, the efficacy and potency of mini-plates in lower molar distalization were evaluated and skeletal, dental and soft tissue changes were analyzed with cephalometric radiographs and dental casts.
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    Öğe
    Effects of thermocycling on the degree of cure of two lingual retainer composites
    (Japanese Soc Dental Materials Devices, 2010) Catalbas, Bulent; Uysal, Tancan; Nur, Metin; Demir, Abdullah; Gunduz, Beniz
    The aim of this study was to evaluate the effects of thermocycling on the degree of cure (DC) and water sorption behavior of two lingual retainer composites. A total of 50 composite specimens, 5 mm diameter and 2 mm height, were prepared using Light Cure Retainer (R) (LCR) (Reliance) and Transbond Lingual Retainer (R) (TLR) (3M Unitek). After 40-second curing with a halogen light and after 24-hour water storage, the composite specimens were subjected to different thermocycling regimes. Absorbance peaks to monitor the DC were recorded using Fourier transform infrared (FTIR) spectroscopy, while water sorption was calculated in mu g/mm(3). On DC, significant differences among the different thermocycling regimes were observed only for the TLR specimens (p<0.05). On water sorption behavior, an increase in the number of thermal cycles resulted in increased water sorption for both composites, but the statistical differences in these groups were not significant. On the effect of thermocycling up to 20,000 cycles, present findings showed that LCR was less affected than TLR. Further, LCR exhibited higher DC and lower water sorption values than TLR after thermal cycling.