In this paper, a flute type element, which is light, cheap and has high efficient contact area, is used in a laminar flow meter to expand the application fields of the meter including critical environment. At first, the theoretical characteristics of the flute type element are verified in terms of computational fluid dynamics. Next, the representative… (More)
The etched metal cingulum rest retainer provides a viable alternative to the use of an incisal rest or a conventional cast restoration incorporating a cingulum rest. It is not intended for use in every case, but may be useful when indicated.