An oral irrigator includes a sprayer, a spray lance, a control switch, a vessel, a water pipe and a water volume stepless adjustment device. The water volume stepless adjustment device includes an adjusting switch, a controller and a signal output device. A signal output by the controller can be continuously adjusted for adjusting the adjusting switch to continuously adjust the magnitude of pressure of a fluid sprayed from the spray lance. When a user uses the oral irrigator, the user can adjust the water pressure according to personal tolerance and preferences until feeling most comfortable, thereby greatly enhancing the cleaning effect and comfort of the oral irrigator in a using process. The oral irrigator can also be connected to an oral observation instrument, so that under direct vision, the water volume is adjusted, the teeth and the oral cavity are cleaned, and the cleaning process can be shot and photographed.

Described herein are systems and methods for providing personalized oral irrigation. One variation of a system for personalized oral irrigation comprises a fluid reservoir and a customized oral insert in fluid communication with the fluid reservoir. The oral insert comprises an arrangement of fluid openings positioned based on the individual oral or dental structures of a user's teeth to provide a customized fluid flow over the user's teeth. Also described herein are methods for generating an arrangement of fluid openings in a customized oral insert.

This disclosure relates to oral care appliances and methods of forming oral care appliances. A disclosed oral care mouthpiece includes a flexible membrane and a set of oral care elements attached to the flexible membrane. The set of oral care elements have a composition with a hardness of at least 50 Shore Type A (shA). Each oral care elements in the set of oral care elements has a minimum stiffness value higher than 410.sup.8 newton meters and lower than 610.sup.3 newton meters. The stiffness value and hardness of the oral care elements are both critical values for the disclosed appliances and methods. The stiffness value can be expressed as the product of the Young modulus of the oral care element and the moment of inertia of the oral care element divided by the length of the oral care element.

An apparatus for dental irrigation may be provided to project fluid onto the surfaces of, and the interproximal spaces between, a user's teeth and gum-line. The apparatus may comprise two hollow U-shaped manifolds having orifices located on their interior faces used as fluid jets. The manifolds may be connected, at a central point of reflection, by a rotating inlet joint which supplies the fluid flow. When placed in the user's mouth, the apparatus may be designed to receive the top and bottom sets of teeth in each corresponding U-shaped manifold, with orifices configured to provide fluid jets aligned towards the lingual and buccal side of the teeth. The orifices may be staggered to provide staggered fluid flow. A user's teeth may be cleaned with a controlled fluid flow by moving the apparatus in a sweeping motion between each set of rear molars.

A multi-purpose molar lift oral insertion and double level panorama form designed bristle brush tilter provides a thorough oral cleaning for dental and gums. The new invention is a small mechanism apparatus designed for a person with health challenges and advanced pace everyday life.

This new invention designed to help and evolve it's usage for hospital bound, preoperational, concrete operational, formal operational stages. This present invention is also designed to prevent over waste plastics going in marine ocean animals and landfills. The new invention's waste is its replaceable disposable double level panorama form designed bristle brush.

The new invention's main feature part is called the molar gap tilt lift platform. This main feature on the new invention sets in the area where a person's molar lies in the mouth. A typical oral dental jaw anatomy has its molar area in the jaw pattern. The 2nd molar are label as 2, 15, 31, 18 set and the last 3rd molar are label as 1, 16, 32, 17 which also call the wisdom teeth. This present new invention will not perform and work without the designed feature call the molar gap tilt lift platform.

The molar gap tilt lift platform feature is the main important designed to cause a gap or space between to upper and bottom jaw. Then new invention's molar gap tilt lift platform is set in its area between the upper, lower molar. And last the whole oral insertion fully enclosed in mouth. The pivot axle part along with its attached double level bristle brush can parallel on its swivel from the rotate shaft pin by oscillate or maneuver left side to right side or up and down just a touch of the fingertip.

An oral care appliance and a method of use are disclosed. The oral care appliance includes a mouthpiece with one or more enclosed compartments between an outer surface and an inner surface of the mouthpiece. The inner surface comprises at least one flexible membrane surrounding the one or more enclosed compartments. The oral care appliance also includes a control unit configured to regulate pressure variations in the one or more enclosed compartments to deform the flexible membrane and thereby perform an oral care action.

An oral care appliance for cleaning teeth of a user and a method of adapting a brushing cycle of the oral care appliance are disclosed. Specific embodiments disclosed herein adapt the at least one brushing cycle based on a variety of factors, either alone or in combination, such as the time elapsed since a last brushing event and the identity of a user.

An oral care appliance and a method of controlling pressure in the oral care appliance are disclosed. The pressure inside a mouthpiece of the oral care appliance is controlled by an actuator. The actuator is triggered when a targeted threshold value of an operational characteristic is reached. Automatic control of the pressure in the mouthpiece enhances both cleaning efficiency and user comfort.

The present invention describes a method for a U-shaped teeth brush device having a conformable shape adjusting U-shaped teethbrush module and one or more individual tooth brushes coupled to the power drive mechanism, each brush having a sensor, piezoelectric crystal and transducer and each tooth brush having a block anchor coupled to the power drive, under smart controls, an electronic control system for sensing individual tooth pressure and controlling motor transmission of vibration to prior positioned brushes, whereby a users unique mouth features can be accounted for by adjusting U-shape distal ends to fit through the users mouth and align with users teeth arch for programmatically brushing more than one tooth simultaneously.

An oral cavity washing device includes a nozzle and a pump that supplies a liquid to the nozzle. The nozzle has a nozzle flow passage and a reduced part that is disposed in an intermediate part of the nozzle flow passage and that is smaller in cross-sectional area than a rest of the nozzle flow passage. A first flow passage and a second flow passage that are in parallel to each other are disposed between the nozzle and the pump. The first flow passage has a first valve that causes the first flow passage to be opened only when the pump sucks the liquid. The second flow passage has a second valve that causes the second flow passage to be opened only during discharge performed by the pump.