AIM To compare the bond strength and the fracture resistance of different post systems. MATERIALS AND METHODS Endodontically treated 60 mandibular incisor and 60 mandibular premolar teeth were used for the bond strength and fracture resistance test respectively. For each test, three groups (n = 20) were formed according to the posts used zirconia posts (ZR post), individually formed glass fib...

BACKGROUND AND OBJECTIVES Studies have shown decreased bone mineral density in individuals with urolithiasis, but their burden of fracture remains unclear. This study sought to determine whether urolithiasis is associated with increased fracture risk across the lifespan and to delineate sex effects. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS A population-based retrospective cohort study us...

Abstract We introduce a beam network model for hierarchically patterned materials. In these materials, load-parallel gaps intercept stress transmission in the load perpendicular direction such manner that damage is confined within nested, load-carrying ‘modules’. describe morphological characteristics of materials terms deterministically constructed, hierarchical (DHBN) models and randomized va...