The biomechanical behavior of the universal link (titanium base) prosthetic abutment with different heights in implant-supported restorations was evaluated. Forty regular implants (4 × 10 mm) titanium were used, divided into two groups according to height (n = 20): 4.5 4 mm (short) and 5.5 (long). Using CAD/CAM technology, zirconia crowns milled cemented onto abutments. Half specimens submitted...

The identification of the cost function, the optimization of which generates the optimal behavior of a dynamic system, is one of the most challenging problems in the areas of sensorimotor control, machine learning and control theory. The problem could be state as follows: given the dynamics of a system and by observing its behavior we ask what is the cost function that if it was optimized it wo...

PURPOSE Approximately 5% of the adult population has one or more cerebral aneurysm. Aneurysms are one of the most dangerous cerebral vascular pathologies. Aneurysm rupture leads to a subarachnoid hemorrhage with a very high mortality rate of 45-50%. Despite the high importance of this disease there are no criteria for assessing the probability of aneurysm rupture. Moreover, mechanisms of aneury...

STUDY DESIGN Biomechanical testing of partially nucleotomized ovine cadaveric spines. OBJECTIVE To explore how the nucleus pulposus (NP) affects the biomechanical behavior of the intervertebral disc (IVD) by performing a partial nucleotomy via the transpedicular approach. SUMMARY OF BACKGROUND DATA Mechanical loading represents a crucial part of IVD homeostasis. However, traditional regener...