Instruments of Debtstruction

effectiveness of hedstroum files and rotary k3 instruments in removal of obturation materials during retreatment in curved canals

چکیده ندارد.

Corrosion of Ni-Ti Rotary Instruments: A Review

The nickel-titanium (Ni-Ti) alloys used in endodontics contain 56% Ni and 44% Ti. The 2 unique features related to clinical dentistry (i.e., shape memory effect and superelasticity) are due to the transition from austenite to martensite in Ni-Ti alloy. When a superelastic Ni-Ti alloy undergoes a low tensile loading, normal elastic behavior occurs. In fact, at higher tensile loads, the elastic s...

Exhibition of New Instruments

Exhibition of Instruments

Dr Maxwell Ross showed a couple of reversible nasal saws made for his colleague, Dr Hunter Mackenzie, by Mr Young. They were an improvement upon the saws in previous use, in that they were made so that they could be set at any angle, and their reversibility allowed of their being used to saw upwards or downwards as the operator desired. The serrated edge was not carried all the length of the in...

Quality of surgical instruments.

INTRODUCTION Many surgeons will have encountered the scissors that would not cut, and the artery clip that comes off in a deep difficult location, but it would be reasonable to assume that new instruments should be of assured quality. This study reports the surprising findings of a local quality control exercise for new instruments supplied to a single trust. MATERIALS AND METHODS Between Jan...