Tapered implant connections have gained wide popularity for being more resistant to fatigue and for promoting a better seal against bacterial infiltration than conventional connections. The aim of this study was to evaluate the bacterial seal at the implant-abutment interface using two Morse taper implant models, by in vitro microbiological analysis. Eleven non-indexed and 11 indexed abutments ...

This in vitro study evaluated the seal created by varying depths of mineral trioxide aggregate (MTA) plugs placed in an orthograde fashion in five groups of 10 teeth. One group received a 2 mm thick orthograde apical plug of MTA, the second group a 5 mm apical MTA plug, and the third group a 2 mm apical MTA plug with a second 2 mm increment, 24 h later. The remaining portion of the canal in the...

Insulation degradation leading to leakage current flow through the high voltage insulator is a major problem faced by various power distribution utilities. The excessive leakage current flow into the wooden supporting structures (wooden cross-arm and pole) leads to pole-top fires and subsequently power cut-off. Most prior researchers focused on flashover phenomena of insulators rather than inve...

INTRODUCTION The purpose of this study was to compare the ability of ProRoot mineral trioxide aggregate (PMTA) and Root mineral trioxide aggregate (RMTA) as root-end filling materials, and Portland cement (PC) to prevent bacterial leakage through filled root end cavities. MATERIALS AND METHODS Fifty-one extracted human single rooted teeth were cleaned and shaped using a step back technique. T...

abstract background: the pressure of consumption spots in eater supply systems is one of the most important hydraulic parameters can be used in optimized management of water distribution networks. since the pressure has some different effects on various parameters of the network management including its hydraulic functions, reliability, stability and leakage, its control is of great importance ...

Chronic serous otitis media is a common problem in the daily routine of the otorhinolaryngologist. In the majority of cases, the cause is related to dysfunction of the eustachian tube due to viral or bacterial rhinitis and occasionally to nasopharyngeal tumors. We report a case of a patient presenting with chronic serous otitis media that was resistant to conventional therapy. MRI with gadolini...

We report an SRAM with a 90% reduction of activeleakage power achieved by controlling the supply voltage. In our design, the supply voltage of a selected row in the SRAM goes up to 1 V, while that in other memory cells that are not selected is kept at 0.3 V. This suppresses active leakage because of the drain-induced barrier lowering (DIBL) effect. To avoid unexpected flips in the memory cells,...