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 disclosure relates to an oral retention device and an osmotic pump tablet, preparation method therefor and application thereof. The medicinal tablet is inserted into the oral retention device to form a pharmaceutical device composition. The pharmaceutical device composition is fixed on the matching teeth in the oral cavity to achieve sustained release of the drug within a certain period of time. A high-dose osmotic pump tablet of the present disclosure with the absorption window of active pharmaceutical ingredients limited to the upper gastrointestinal tract has a high drug loading capacity and can achieve a good therapeutic effect.

The present invention discloses a negative-pressure oral apparatus capable of relieving discomfort of soft tissues in the oral cavity and improving fixation of the oral apparatus to prevent the oral apparatus from falling off due to mouth opening. The oral apparatus is compact and elastic so that it fits various shapes and sizes of the oral cavity and is easy to be put on and taken off to provide convenience and safety to the user. In another embodiment, a method for maintaining a negative oral pressure and collecting liquid by coupling the oral apparatus to a liquid collecting apparatus capable of effectively providing the oral cavity with a negative pressure to expel liquid in the oral apparatus and deliver the liquid to an absorbing element in the liquid collecting apparatus so as to prevent liquid leakage or contamination.

A positioning mouthpiece comprises an upper component having a mouth portion and a fastening portion, and a lower component having a mouth portion and a fastening portion. The fastening portion of the upper component and the fastening portion of the lower component are attached to each other such that limited back and forth movement and lateral movement of the mouth portion of the upper component and the mouth portion of the lower component can take place.

A syringe finger ring and finger ring inserts, that in various embodiments, provides or connects to a syringe that comprises a syringe body capable of having a volume of material therein and a plunger disposed to enter the syringe body and dispense material from the syringe body by movement of plunger, and a novel a finger ring and related structures having an open area and connected, by various structures, to the plunger adapted to receive a finger within the finger ring open area, including a spacer of various embodiments inserted within the open area to selectively reduce the open area and provide more controllable engagement of the syringe plunger by the operator finger in distal and proximal strokes.

The invention features a pharmaceutical suspension containing drug particles, a drug delivery device anchored in the mouth for continuously administering the pharmaceutical suspension, and methods of their use.

In some embodiments, a system for improving a user's breathing includes a mask configured to be positioned on a user's face to deliver gas to the user, a first oral appliance arch configured to be worn in the user's mouth on the user's mandibular dentition, a first tension element coupled to the first oral appliance arch, an adjustment device coupled to the mask, and a control system. The adjustment device is configured to receive the first tension element and to adjust the position of the first tension element to adjust the forward position of the first oral appliance arch, such that the when the mask is positioned on the user's face and the first oral appliance arch is worn on a user's mandibular dentition, the forward position of the user's mandible is adjusted.

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.

The invention features a pharmaceutical suspension containing drug particles, a drug delivery device anchored in the mouth for continuously administering the pharmaceutical suspension, and methods of their use.

A syringe finger ring and finger ring inserts, that in various embodiments, provides or connects to a syringe that comprises a syringe body capable of having a volume of material therein and a plunger disposed to enter the syringe body and dispense material from the syringe body by movement of plunger, and a novel a finger ring and related structures having an open area and connected, by various structures, to the plunger adapted to receive a finger within the finger ring open area, including a spacer of various embodiments inserted within the open area to selectively reduce the open area and provide more controllable engagement of the syringe plunger by the operator finger in distal and proximal strokes.