Kalan kron miktarının ve iki farklı fiber-post sistemlerinin endodontik tedavili dişlerin kırılma dayanımları üzerine etkisi
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Tarih
2016
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Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Kalan kron miktarının ve iki farklı fiber-post sistemlerinin endodontik tedavili dişlerin kırılma dayanımları üzerine etkisi Amaç: Bu in-vitro çalışmanın amacı iki farklı cam fiber-post sistemiyle restore edilen endodontik tedavi görmüş mandibular premolar dişlerde 2 mm yüksekliğinde kron varlığının ya da yokluğunun, dişlerin kırılma dayanımına etkisini araştırmaktır. Gereç ve Yöntemler: Endodontik tedavi görmüş 56 adet yeni çekilmiş tek köklü insan premolar dişi rastgele 2 gruba ayrıldı. Bir grupta dişler mine-sement birleşim yerinden kesildi. Diğer grup mine-sement birleşiminin 2 mm yukarısından kesildi. Gruplar iki alt gruba ayrıldı. GC ve Glassix olmak üzere iki farklı cam fiber post sitemi kök kanallarına simante edildi (n14). Simantasyon işlemi çift aşamalı polimerize olan rezin siman (Panavia SA Cement Plus Automix , Kuraray Noritake Dental Inc., Japonya) ile gerçekleştirildi ve dişlerin koronal kısmı kompozit rezin kor materyali (Estelite Posterior, Tokuyama Dental Corp., Tokyo, Japonya) ile restore edildi. Daha sonra dişlerin üst yapısı metal destekli seramik sistemle restore edildi. Her bir numune akrilik rezin içerisine gömüldü ve üniversal bir yükleme test cihazına monte edildi. Dişin uzun aksına 135 derece açı ile 1 mm/dk piston hızıyla kırık oluşuncaya kadar yük uygulandı. Kırık tipleri X20 büyütmeli ışık mikroskobu altında incelenerek, tamir edilebilir ve tamir edilemez olarak sınıflandırıldı. Elde edilen verilerin istatistiksel analizleri Two Way ANOVA ve Tukey HSD testleri vasıtasıyla gerçekleştirildi. Bulgular: Endodontik tedavi görmüş dişlerin kırılma direnci üzerinde bu çalışmada kullanılan post sistemlerinin ve kron yüksekliklerinin önemli derecede etkilendiği görülmüştür (p0.000). En yüksek kırılma dayanımının Glassix cam fiber post uygulanan ve 2 mm kron varlığı olan grupta olduğu görülmüştür. Sonuç: Her iki cam fiber post sistemi uygulamasında, 2 mm kron varlığının olması dişlerin kırılma dayanımını arttırıcı etki ortaya koymuştur.
Background: The aim of this in-vitro study was to investigate the fracture resistance of endodontically treated mandibular premolar teeth restored with two different glass-fibre-post systems, in the presence or absence of 2 mm crown height. Methods: 56 recently extracted single-rooted human premolar teeth were endodontically treated and randomly divided into 2 groups. In one group the teeth were cut from the mine-cementum joint. The other group was cut from 2 mm above the cementenamel junction. Groups were divided into two subgroups and two different fiber post systems were cemented in root canals; GC and Glassix glass fiber post systems (n14). Cementation of post systems was performed with dual-polymerizing resin luting agent (Panavia SA Cement Plus Automix , Kuraray Noritake Dental Inc., Japan) and coronal portion of the teeth were restored with composite resin core material (Estelite Posterior, Tokuyama Dental Corp., Tokyo, Japan). Then, the superstructure of the teeth was restored with metal-ceramic system. Each specimen was embedded in acrylic resin and then mounted in a universal loadtesting machine. A compressive load was applied at a 135-degree angle to the long axis of the tooth until fracture, at a crosshead speed of 1 mm/min. The fracture types were classified through X20 magnification light microscopy to repairable and unrepairable. The obtained data statistical analyses were performed by means of the Two Way ANOVA and Tukey HSD tests. Results: It has been observed that the post systems used in this study and the height of the crowns were significantly affected on fracture resistance of endodontically treated teeth (p0.000). The highest fracture resistance has been shown at Group which applied Glassix Glass fiber post and presence of 2 mm crown height. Conclusion: Both glass fiber post system applications, presence of 2 mm crown height have revealed the effect of increasing the fracture strength of teeth.
Background: The aim of this in-vitro study was to investigate the fracture resistance of endodontically treated mandibular premolar teeth restored with two different glass-fibre-post systems, in the presence or absence of 2 mm crown height. Methods: 56 recently extracted single-rooted human premolar teeth were endodontically treated and randomly divided into 2 groups. In one group the teeth were cut from the mine-cementum joint. The other group was cut from 2 mm above the cementenamel junction. Groups were divided into two subgroups and two different fiber post systems were cemented in root canals; GC and Glassix glass fiber post systems (n14). Cementation of post systems was performed with dual-polymerizing resin luting agent (Panavia SA Cement Plus Automix , Kuraray Noritake Dental Inc., Japan) and coronal portion of the teeth were restored with composite resin core material (Estelite Posterior, Tokuyama Dental Corp., Tokyo, Japan). Then, the superstructure of the teeth was restored with metal-ceramic system. Each specimen was embedded in acrylic resin and then mounted in a universal loadtesting machine. A compressive load was applied at a 135-degree angle to the long axis of the tooth until fracture, at a crosshead speed of 1 mm/min. The fracture types were classified through X20 magnification light microscopy to repairable and unrepairable. The obtained data statistical analyses were performed by means of the Two Way ANOVA and Tukey HSD tests. Results: It has been observed that the post systems used in this study and the height of the crowns were significantly affected on fracture resistance of endodontically treated teeth (p0.000). The highest fracture resistance has been shown at Group which applied Glassix Glass fiber post and presence of 2 mm crown height. Conclusion: Both glass fiber post system applications, presence of 2 mm crown height have revealed the effect of increasing the fracture strength of teeth.
Açıklama
Anahtar Kelimeler
Basma dayanımı, Cam fiber, Post ve kor tekniği, Compressive strength, Glass fibers, Post and core technique
Kaynak
Selcuk Dental Journal
WoS Q Değeri
Scopus Q Değeri
Cilt
3
Sayı
3
Künye
Çelebi, H., Terlemez, A., Büyükerkmen, E. B., Ünlü, N., Korkut, E. (2016). Kalan kron miktarının ve iki farklı fiber-post sistemlerinin endodontik tedavili dişlerin kırılma dayanımları üzerine etkisi. Selcuk Dental Journal, 3, 3, 120-127.
