The following is a description of a modified technique for the reinforcement of proximal anastomosis regarding the process of aortic allograft or pulmonary autograft full root implantation. A double width pericardial strip is used to create a pericardial sewing-cuff to be used as a neo-ring. This technique is said to be best suited for decreasing the operative bleeding, reducing anastomotic pit...

introduction: the fracture strength of endodontically treated teeth compared to vital ones has long been a source of controversy. it is not clear how root canal therapy affects the stress distribution in teeth. the purpose of this study was to evaluate the changes in stress distribution after root canal therapy in a human maxillary canine by finite element analysis (fem). materials and methods:...

Ceramic post-and-core systems offer biocompatibility, aesthetics, reinforcement of the remnant root, and prosthesis retention. Aesthetic posts-and-cores contribute to the optical properties of the overlying restorations when metal-free crowns are used. This article illustrates the use of these materials to provide strength and aesthetics during the restoration of endodontically treated teeth. T...

Decades of quantitative measurement indicate that roots can mechanically reinforce shallow soils in forested landscapes. Forests, however, have variations in vegetation species and age which can dominate the local stability of landslide-initiation sites. To assess the influence of this variability on root cohesion we examined scarps of landslides triggered during large storms in February and No...

The influence of root reinforcement on shallow landsliding has been well established through mechanistic and empirical studies, yet few studies have examined how local vegetative patterns influence slope stability. Because root networks spread outward from trees, the species, size, and spacing of trees should influence the spatial distribution of root strength. We documented the distribution an...

It is well recognised that plant vegetation and roots are capable of improving the shear strength hillslopes by reinforcing soil resistance. Several key factors influencing level slope reinforcement include root geometry, orientation strength. To assess mechanical performance vegetated slopes using numerical methods, structures can be represented beam pile elements to mirror behaviour. In contr...

The size of a shallow landslide is a fundamental control on both its hazard and geomorphic importance. Existing models are either unable to predict landslide size or are computationally intensive such that they cannot practically be applied across landscapes. We derive a model appropriate for natural slopes that is capable of predicting shallow landslide size but simple enough to be applied ove...