FARKLI POST SİSTEMLERİNİN TUTUCULUĞUNDA YAPIŞTIRMA SİMANLARININ ETKİSİNİN İNCELENMESİ

Amaç: Bu çalışma, farklı post sistemlerinin (döküm post, hazır seramik post) tutuculuğu üzerine üç farklı simanın (çinko fosfat, cam iyonomer, resin siman) etkisini incelemek ve karşılaştırmak amacıyla yapılmıştır. Gereç ve yöntem: Çalışmada 90 adet tek köklü çekilmiş insan dişi kullanılmıştır. Dişler preparasyon yapılıncaya kadar distile su içerisinde bekletilmiştir. Her bir dişin kuron kısmı, mine-sement birleşim yerinden 1 mm yukarıda olacak şekilde elmas silindirik frez yardımıyla uzaklaştırılmıştır. Dişlere kanal tedavisi uygulanmış, daha sonra Cosmo post sisteminde bulunan özel bir frez ile post boşlukları hazırlanmıştır. Kökler uzun aksları horizontal düzleme dik olacak şekilde parelelometre ile akrilik bloklara gömülmüştür. Elde edilen örnekler; kumlanmış ve kumlanmamış döküm post ile hazır seramik post için 30’arlı üç gruba ayrılmıştır. Her grup da üç farklı siman (çinko fosfat, cam iyonomer ve rezin siman) ile yapıştırılmak üzere 10’arlı üç alt gruba ayrılmıştır. Simantasyon sonrası hazırlanan örneklere çekme kuvveti uygulanmıştır. İstatiksel analizlerde ANOVA ve Duncan çoklu karşılaştırma testi uygulanmıştır (P = 0.05). Bulgular: Çalışmanın sonucunda, en iyi tutuculuğu çinko-fosfat siman ve cam iyonomer siman ile yapıştırılan kumlanmış döküm post, en az tutuculuğu ise rezin simanla yapıştırılan kumlanmamış döküm post sistemi ve çinko-fosfat simanla yapıştırılan hazır seramik post sistemi göstermiştir. Sonuçlar: Kumlama yapılmış postlar ile yapılmamış postlar karşılaştırıldığında, kumlama sonucunda retansiyonda artış gözlenmiştir. Hazır seramik post için ise en iyi retansiyon cam iyonomer siman grubunda görülmüştür. Anahtar Kelimeler: Bağlanma direnci, döküm post, seramik post, siman, kumlama SUMMARY Investigation of Effective of Adhesive Cements on the Bonding of Different Post Systems Aim: This study was carried out to investigate the effect of three different cement (zinc phosphate, glass ionomer, resin cement) on the retention of different post systems (cast post, ceramic post) and to determine the suitable combination for retention. Material and Methods: Ninety extracted human teeth with single root were used in the study. The teeth were stored in distilled water until preparation. The crown of each tooth was removed from one mm above of the cemento-enamel junction by using a diamond cyclindirical bur. Endodontic treatment were performed on the teeth and post spaces were prepared by using a special drill of Cosmo post systems. The roots were embedded in acrylic blocks. The samples were divided into three groups (sandblasting/ unsandblasting cast post or prefabricated ceramic post) (n=3). Each of these groups was divided into 3 subgroups for three different cements (zinc phosphate, glass ionomer and resin cement). After cementation, tensile force was applied on the samples. ANOVA and Duncan's multiple range tests were performed for statistical analysis (P = 0.05). Results: According to the results of the variance analysis, it was found that the post type (P < 0.001), the cement type and post-cement interaction had statistically significant effect (P < 0.05) on the bond strength of post to root dentin. Conclusions: The best retention was seen in the sandblasting cast post cemented with zinc phosphate cement and with glass ionomer cement. On the other hand, the prefabricated ceramic post cemented with zinc phosphate cement and unsandblasting cast post cemented with resin cement showed the least retention. Keywords: Bond strength, cast post, ceramic post, cement, sandblasting.

Anahtar Kelimeler:

Bağlanma direnci, döküm post, seramik post, siman

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