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PROTEZ TABAN POSTERİOR PERİFERİK SEAL BOZULMA FARKLI POLİMERİZASYON TEKNİKLERİ ÜZERİNE ETKİSİ

THE EFFECT OF DIFFERENT POLYMERIZATION TECHNIQUES ON THE POSTERIOR PERIPHERAL SEAL DISTORTION OF THE DENTURE BASE

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Abstract (2. Language): 
This study was carried out to examine the influence of different polymerization techniques and shapes of palatal vault on the posterior peripheral seal distortion. Three edentulous maxillary casts with different palatal vault shapes (flat, V-shaped, medium depth) were chosen. The casts were duplicated in such R way that there would be 20 for each palatal vault shape. Then the oasts were numbered and covered with two layers of baseplate was. A short-term polymerization technique was applied to half of the waxed samples which were prepared to be of equal number for each palatal shape, while a long-term polymerization technique was applied to the other half. The amount of the contraction due to the polymerization technique and the palatal shape was determined by a measurement of the gap between the base plates and the casts. The measurements were made by the same investigator on the midline of the posterior peripheral seal of the specimens using a microscope. Analysis of variance was used for the evaluation of the results obtained. The effect of polymerization techniques and palatal vault shapes on the posterior palatal seal distortion was found to be statistically significant (P< 0.001). It. was found that palatal depth influenced the distortion in the posterior peripheral seal and the long-term polymerization technique produced less dimensional change than the other one.
Abstract (Original Language): 
Bu çalışmada, farklı polimerizasyon tekniklerinin vc damak şeklinin posterior periferat bölgedeki açıklığa etkisi incelendi. Farklı damak şekilli (sığ, V şekilli, orta derin) 3 dişsiz maksin er model seçildi. Her bir damak şeklinden 20 tane olacak şekilde modeller çoğaltıldı. Elde edilen modeller ııumara!fındıktan sonra iki tabaka hazplak mumu ile kaplandı. Her bir damak şeklinden eşit sayıda olacak şekilde hazırlanan mum örneklerin yarısına kusa süreli polimerizasyon tekniği, diğer yarısına ise uzun sureli polimerizasyon tekniği uygulandı. Polimerizasyon tekniğine ve damak şekline bağlı oluşun konEraksiyon miktarı, kaide plakları ile alçı modeller arasındaki açıklık olarak üst protezin posterior peripheral bölgesinde orta hatta bir nıikroskcıp aracılığıyla avnı araştırmacı tarafından ölçülerek saptandı. Eide edilen sonuçların değerlendirilmesi için varyans analizi kullanıldı. Posterior perıferal bölgedeki ayıklık üzerinde, polimerizasyon tekniği ve damak şeklînin etkisinin önemli olduğu (p< 0.001) istatistiksel olarak leşpit edildi. Damak derinliğinin protezin posterior perıferal bölgesindeki açıklığı etkilediği, uzun sureli polimerizasyon tekniğinin de diğer tekniğe göre açıklık üzerinde dalın az etkili olduğu görüldü.
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