Interfacial nanoleakage and internal cement thickness of three esthetic crown systems

The effect of ferrule height on stress distribution within a tooth restored with fibre posts and ceramic crown: A finite element analysis

“…In particular, interfaces post-root canal dentin, post-abutment, abutment-root, abutment-ferrule and abutment-crown were simulated by direct modeling with volumetric elements of the interfacial space between the components. The interface thickness was simulated according to the literature data reporting the average dimensions of composite cement [24] and adhesive [23] layer. The validation process is an important step in a Finite-Elements-Model generation.…”

“…Accuracy of the model was checked by convergence tests [22]. Cement and adhesive interfaces were simulated by layers of solid brick elements: abutment-root and the abutment-post interfaces, average thickness of 10 m [23]; root-post interface, average thickness of 50 m [24]; abutmentcrown interface, average thickness of 50 m [24] (Fig. 2b).…”

Microleakage around zirconia crown margins after ultrasonic scaling with self‐adhesive resin or resin modified glass ionomer cement

“…Microleakage at marginal interfaces may cause restoration failure due to the dynamic passage of bacteria, oral fluids, molecules, and ions between the interface of the restoration and tooth, causing secondary caries and discoloration of margins as well as tooth hypersensitivity. [4][5][6][7][8][9][10][11][12] A recent systemic review reported that the estimated annual complication rate for single unit zirconia crowns was 0.09% for secondary caries and 0% for marginal staining. 13 No information was provided regarding the incidence of hypersensitivity.…”

A Comparison Of The Performance Of Different Resin Luting Cements After Thermomechanical Aging

“…Bu çalışmada kullanılan adeziv rezin simanlarla yapılan nanosızıntı çalışmalarının az olmasına rağmen Makishi 2 ve Bitter 50 'in RelyX Unicem'in karşılşatırdıkları diğer rezin simanlardan daha az nanosızıntı gösterdiğini bildiren çalışmalarını sonuçları çalışmamızla kısmen uyumludur. Chazine 51 , Multilink rezin simanın karşılaştırdığı diğer simanlardan (Multilink Automix, Variolink II ve G-Cem Automix) anlamlı şekilde en fazla sızıntıyı gösterdiğini bildirmiştir. Çalışmamızda kullanılan Multilink rezin siman kimyasal sertleştiği için polimerizasyon dönüşümü daha az olduğu için polimerizasyonun olmadığı bölgelerdeki kollagen liflerin arasında su birikimi olabilir 52 .…”