The present invention provides dental amalgam recycling systems, useful for recycling particles from a dental liquid effluent drawn, for example, from a suctioning device.

The apparatus and method of amalgam waste recovery provides for the effective recovery of amalgam waste, including mercury and other toxic substances, during a dental procedure. The apparatus includes a novel filter that effectively captures waste and a recovery method that provides for the efficient recovery of mercury, gold, and silver waste during dental procedures. The filter includes a cylindrical shape that effective entraps dental waste both along the sides and upon the flat, circular end. The apparatus may be composed of cellulose or paper allowing recovery of mercury vapors and other by-products.

The present invention provides dental amalgam recycling systems, useful for recycling particles from a dental liquid effluent drawn, for example, from a suctioning device.

The present invention provides dental amalgam recycling systems, useful for recycling particles from a dental liquid effluent drawn, for example, from a suctioning device.

An apparatus and method for removing amalgam and waste particles from dental office suction effluent. The apparatus includes an upper chamber and a solids collection canister removably secured thereto. Dental office suction effluent drawn through a dental suction wand enters the upper chamber along a lateral flow path above a substantially cylindrical internal wall portion. A gas component of dental office suction effluent changes direction by more than 60 before it exits the upper chamber through an exit port. A riser conveys a liquid and solids component of dental office suction effluent through a drain into the solids collection canister. A flow restrictor allows liquids and gases to exit the solids collection canister interior volume but prohibits solids from exiting the solids collection canister interior volume.

The invention relates to a large internal combustion engine (1) with a crankcase (4), with a crankshaft (11) which is mounted rotatably in said crankcase (4), and with a crankshaft journal (10) on which a connecting rod (9) is pivotably arranged, wherein the crankcase (4) has an upper deck (O) and a lower deck (U) with in each case one opening for the cylinder liner (6), in which opening said cylinder liner (6) is arranged, and wherein the connecting rod (9) has an extent width (A) which is greater than the external diameter (a) of the cylinder liner (6). The problem addressed is that of specifying an improved large internal combustion engine. According to the invention, this is solved by virtue of the fact that the upper deck (O) and/or the lower deck (L) have/has at least one clearance (FO, FU) for the installation of the connecting rod (9), and that the recess which is produced along the external diameter (a) of the cylinder liner (6) opens up at least an extent width (A) of the connecting rod (9) and has a breadth (W) which corresponds at least to a width (b) of the connecting rod (9). Moreover, the invention relates to an associated method for the assembly of the large internal combustion engine (1).

Devices for collecting a fluid sample from the oral cavity, the device including a mouthpiece that includes a chamber, the chamber including front and rear inner walls; and means for collecting the fluid sample from the oral cavity; and methods of collecting and analyzing samples of fluid from the oral cavity, including the steps of placing the device in the oral cavity, collecting the fluid sample and conducting an analysis of the fluid sample.

The present invention provides dental amalgam recycling systems, useful for recycling particles from a dental liquid effluent drawn, for example, from a suctioning device.

An apparatus and method for removing amalgam and waste particles from dental office suction effluent. The apparatus includes an upper chamber and a solids collection canister removably secured thereto. Dental office suction effluent drawn through a dental suction wand enters the upper chamber along a lateral flow path above a substantially cylindrical internal wall portion. A gas component of dental office suction effluent changes direction by more than 60 before it exits the upper chamber through an exit port. A riser conveys a liquid and solids component of dental office suction effluent through a drain into the solids collection canister. A flow restrictor allows liquids and gases to exit the solids collection canister interior volume but prohibits solids from exiting the solids collection canister interior volume.

The invention relates to a negative pressure drainage device attached to dental tissue. The negative pressure drainage device has a negative pressure machine, a negative pressure tester, a negative pressure control valve and a sealing part. The negative pressure machine is connected to the negative pressure tester, the negative pressure tester is connected to the negative pressure control valve, and the negative pressure control valve is connected to the sealing part through a connecting part. The device, by using the apical foramina structure of the dental tissues per se, cannot only drain and form negative pressure in the cyst cavity, but also no longer need a long-term implantation of a negative pressure drainage artificial device in the jaw.