113 results about "Occlusal forces" patented technology

Methods and apparatus for producing controlled tooth-moving forces are provided. An orthodontic appliance includes one or more occlusal surface features that modify bite forces between opposing teeth during intercuspation to aid in realignment of the teeth. The interception bite forces can be applied between appliance shells on opposing arches, or between an appliance shell and an opposing tooth. These modified bite forces can be used to supply or augment tooth-moving forces, and the tooth moving forces can produce moments to urge rotational movement of a tooth. Also described herein are orthodontic appliances having an occlusal outer surface contours that are distinct from the occlusal inner surface contour within the dental appliance and may be configured to selectively intercuspate.

A device for collecting and transporting aqueous fluid from the oral cavity to a lateral chromatographic strip for test is disclosed. The lateral chromatographic strip is placed within and extend along a cavity defined in a housing. At least one inspection site to the lateral chromatographic strip is provided to enable inspection of selected sites on the lateral chromatographic strip for test results. A porous wick material protrudes from the housing to a collection site exterior of the housing at one end and communicates to the lateral chromatographic strip at the other end. The porous wick material has particulate construction, the particles adsorbing aqueous oral fluid to transport the fluid from the mouth to the lateral chromatographic strip without substantial absorption. The particles of the porous wick material are bound together to define a continuous interstitial volume for the flow of oral fluid to be transported and are treated to be hydrophilic to the adsorbed oral fluids. The porous wick material readily releases oral fluid to the lateral chromatographic strip. Prevention of reverse flow to the oral cavity from the lateral chromatographic strip naturally occurs due to the circuitous flow path of the porous wick material. A bite plate is coupled to the housing and insertable between the teeth of the patient to position the porous wick in the oral cavity for collecting the oral fluid. The bite plate is typically held in place by the occlusal force of the teeth, preferably the molars and/or the bicuspids, to position the porous wick in the buccal space. By observing the lateral chromatographic strip while the test device is in the mouth immediate test results are obtained.

The invention discloses a sleeve valve pipe and application to landslide control. The sleeve valve pipe comprises a grouting outer pipe and is characterized in that the grouting outer pipe is a steel pipe, and the outer surface of the grouting outer pipe is provided with threads and an outer support. The landslide control includes the steps of drilling holes, grouting the sleeve valve pipe, placing a steel strand, pouring cement paste and anchoring the grouting outer pipe and the steel strand. The construction method is simple, operability is high, and economic benefits are obvious; different grouting materials can be adopted according to needs by using the sleeve valve pipe, segmented grouting is achieved, a certain segment in a grouting area can be grouted repeatedly, the steel strand is installed in the reserved grouting outer pipe, the cement paste is injected to the grouting outer pipe which serves as an anchor rod, in this way, a weak intercalated layer in a slope can be reinforced effectively, occlusal force between an anchoring body and a rock-soil body is improved, and overall stability of the slope is improved.

The invention provides a temporomandibular joint training implement. The temporomandibular joint training implement comprises a supporting part and a body part, wherein the supporting part comprises two half ring-shaped forked plates which conform to an upper and lower dental arches respectively, two connecting arms and two supporting arms, the middle parts of the forked plates are provided with forked plate handles respectively, one ends of the forked plate handles are connected to the edges of the excircles of the forked plates, the other ends of the forked plate handles are connected to the front ends of the connecting arms through front connecting pins respectively in a hinged mode, the rear ends of the connecting arms are connected to the front ends of the supporting arms through rear connecting pins respectively in a hinged mode, and the body part comprises a shell body, a sliding sleeve, a spring, a pressure adjusting nut, a pressure adjusting screw rod and a position adjusting nut. The temporomandibular joint training implement has the advantages that hand gripping or pressing power does not needed, it is only need to adjust a corresponding opening distance and a corresponding opening elastic force, through the automatic bite force of the patient, the upper and lower jaws are closed, the spring force of the spring is used for assisting the patient to open the mouth, repeated upper and lower movements of the lower jaw are achieved, and the patient is relaxed and comfortable.

The invention discloses an occlusal force detection device and an occlusal force detection method thereof. The device analyzes the size of occlusal force of the masseter muscle by detecting gas pressure changes inside a rubber pneumatic bag. According to the detection method, occlusal force measurement can be achieved by detecting gas pressure changes inside the rubber pneumatic bag, the device is simple in structure, safe and sanitary, the measured air bag is soft and is particularly suitable for an old person with tooth loss, the occlusal of teeth and the gingiva can be measured at the same time, the comprehensive food masticatory ability of the old person can be reflected more visually, the trouble caused when comprehensive evaluation can be only achieved when other instruments are adopted for measuring the teeth and the gingiva separately is omitted, and a nurse can better take care of the old person conveniently.

The various embodiments herein provide a dental mill blank for fabrication of dental appliance and restorations. A method for fabricating dental bridgework from the mill blank is also provided. The mill blank comprises a hard inner core and wherein the hard inner core provides resistance against a normal occlusal force, a soft outer cover surrounding the inner core, a channel passing through the inner core and the outer cover, a metallic abutment provided at one end of the channel and a handle stud for holding the mill blank onto a milling machine. The channel is designed to make a screw type bridgework for supporting a plurality of neighbouring implants.

An information processing device (104) performs integration processing for each intersection point for raw data outputted from an occlusal force detecting device having a sensor sheet (102) which uses an organic piezoelectric film (201), to create occlusal force data, wherein the raw data includes address information of each intersection point and data obtained based on a signal indicating a change in occlusion force.

The invention discloses a method for evaluating K30 values of high-speed railway bed coarse particle soil padding. The method includes: A, measuring maximum dry density of padding samples, B, measuring maximum occlusal force Cmax (unit of kPa/M) of the padding samples under compacting factor coefficient control values; C, calculating ground coefficient K30 (unit of MPa/M). The method is specific in theory and enables people to reliably evaluate ground coefficient K30 of the coarse particle soil padding under stipulated compacting factors, so that times of field test section rolling compaction tests are greatly reduced, labor and material input are reduced, and construction period is shortened.

The invention provides a circuit breaker shell, a fastener and a circuit breaker shell device. The circuit breaker shell comprises a first shell body and a second shell body; the first shell body and the second shell body are both provided with a first lug boss and a second lug boss which are symmetric each other; and when the first shell body and the second shell body are combined together, one edge of the first shell body is adhered to one edge of the second shell body, and the distance between the other edge of the first shell body and the other edge of the second shell body gradually increases first and then decreases. The shell bodies of the circuit breaker shell can be combined together in a clamping way more firmly and closely, thus the reliability of the circuit breaker is guaranteed. Compared with the fastener having external occlusal force in the prior art, the fastener provided by the invention has internal occlusal force, thus the shell bodies of the circuit breaker shell can be combined closely without a gap being left, the direction of the airflow generated from breaking can not be affected, and the normal breaking of the circuit breaker can be guaranteed. The fastener is easier to assemble and disassemble, and the circuit breaker is convenient to maintain.

The invention discloses a sensor for measuring occlusal force, which belongs to the force sensor. The sensor comprises a fixed area of an elastomer structure, a patch area and an occlusion area, wherein the patch area comprises a patch area for measuring the occlusal force of an upper jaw and a patch area for measuring the occlusal force of a lower jaw, both the patch area for measuring the occlusal force of the upper jaw and the patch area for measuring the occlusal force of the lower jaw are respectively and fixedly provided with a plurality of strain gauges, the elastomer structure is also provided with a through hole, and both the patch area for measuring the occlusal force of the upper jaw and the patch area for measuring the occlusal force of the lower jaw are respectively arranged on the edge of the through hole; the elastomer structure of the sensor is provided with the through hole, and two groups of strain gauges are arranged on two sides of the through hole to form a Wheatstone bridge, so that the measurement precision and sensitivity of the sensor can be effectively improved; moreover, the two Wheatstone bridges are simultaneously accessed to a sensing signal receiving device through a junction terminal, so that the measurement performance of the sensor in use is stable. Meanwhile, the sensor is simple in structure, easy to manufacture and high in sensitivity.

The invention discloses a device for integrally lowering posterior tooth segments. The device comprises two diastema pads and a casting stent, wherein the two diastema pads are fixed on left and right posterior tooth segments on two sides by adhesives; the casting stent is used for connecting the two diastema pads; a towing hook is arranged on a cheek side of each diastema pad; a rubber chain is suspended on each towing hook; the other end of each rubber chain is suspended on a mini-screw implanted into an infrazygomatic crest. The device has the advantages that the posterior tooth segments can be integrally lowered, few screws are implanted, both left and right posterior tooth segments are integrally pressed, the phenomenon that the left and right posterior tooth segments are uneven can be avoided, and the action force totally comprises three parts which are composed of tension force generated by the rubber chains, occlusal force generated by teeth on upper and lower jaws and pressure generated by the tongue.

The present invention relates to an implant-abutment comprising: a fixture, which is coupled to an alveolar bone and comprises on the inside thereof a female tapered part having a tapered shape; an abutment, which has one side comprising a male tapered part, which has a shape corresponding to the female tapered part so as to be coupled to the female tapered part in an engaging manner, and the other side having a prosthesis coupled thereto; and an elastic part provided between the female tapered part, and the male tapered part so as for the abutment to move between a locking position, in which the abutment stays coupled to the fixture and is inhibited from moving away from the alveolar bone, and a sinking position, in which the abutment moves and sinks toward the alveolar bone by the occlusal force of occluding teeth. Configured as such, the present invention allows slight movement under a predetermined external, force by the occlusal force of teeth while stably maintaining the state of being coupled to the fixture and allows the abutment to be separated and easily retrieved from the fixture, if necessary, by the application of an external force equal to or greater than a target coupling force whereby the fixture and abutment stay coupled.

The invention discloses an oral cavity supporting device comprising a fixed block. The fixed block is provided with a bearing, wherein the bearing is provided with a horizontally arranged screw. One end of the screw is provided with a turning handle. The screw is provided with a sliding nut. A first upper arm and a first lower arm are hinged to a bearing end of the screw. The first upper arm is hinged to an upper supporting block. The first lower arm is hinged to a lower supporting block. The other end of the upper supporting block is hinged to a second upper arm. The other end of the lower supporting block is hinged to a second lower arm. The second upper arm and the second lower arm are both hinged to the sliding nut. At original state, the oral cavity supporting device is linearly arranged. Then the oral cavity supporting device is put inside an oral cavity of a patient. The upper supporting block and the lower support block are relatively fixed by occlusal force. With the movement of the sliding nut along the screw, a supporting structure is formed and a patient's oral cavity is pushed open. The oral cavity supporting device is easy in operation and labor-saving. The range of the supporting structure can be precisely adjusted by the screw so that a patient feels comfortable.

The invention provides a fixed denture and a preparation method thereof and relates to the field of medical instruments. The fixed denture is used for repairing a residual tooth. The fixed denture comprises a denture dental crown, a first denture base and a second denture base, wherein the first denture base and the second denture base are used for supporting the denture dental crown and wrapping the tongue side face and the cheek side face of the tooth of a patient respectively so that the denture dental crown can be stably supported by the first denture base and the second denture base. The fixed denture is simple in structure and low in price, the patient does not have a foreign body sense in the oral cavity, and the fixed denture is stable in retention, convenient to dismount and capable of bearing large occlusal force.

A teeth grinding preventing device to be put in an oral cavity of a user includes a main body portion formed into a substantially arcuate shape along a curve of a maxillary teeth alignment of the user and configured to cover an occluding surface of the maxillary teeth, a sensor portion embedded in the main body portion to extend in parallel to the occluding surfaces of maxillary and mandibular teeth and configured to detect an occlusal force and output a detection signal, a teeth grinding determining portion configured to receive the detection signal and determine whether or not the user is grinding the teeth, and a stimulation providing portion configured to provide the user with a stimulation when the teeth grinding determining portion determines that the user is grinding the teeth, and the stimulation providing portion is provided to be mountable and demountable with respect to the main body portion.

A masticatory orthodontic device includes a masticatory unit with a rigid body. The masticatory unit is configured to be removably worn on a dental arch, wherein when worn during mastication, the shape of the masticatory unit is maintained even under a stress from occlusal forces. The masticatory unit includes a teeth-receiving surface with several recesses for accommodating teeth of the dental arch. A shape memory mesh is disposed between the teeth-receiving surface and the dental arch, configured to remember the shape of the teeth in target teeth positions to guide teeth movements from initial teeth positions toward the target teeth positions. A buffering member is disposed between the teeth-receiving surface and the shape memory mesh. Occlusal forces loading on the masticatory unit are transmitted to the shape memory mesh and the teeth through the buffering member, to achieve teeth movements in the recesses.

The invention discloses an oral implant with an asymmetric thread structure. The oral implant comprises an implant part c, an implant part b and an implant part a in sequence from top to bottom; a column body is arranged at the contact part of the implant part c and a compact bone; the implant part b adopts a cone with a cambered surface; the bottom surface of the implant part a is a circular arc surface; an asymmetric thread is arranged on the oral implant; the depth of the asymmetric thread is gradually decreased from the implant part b to the implant part c and the implant part a on the two sides of the implant part b; the inclined angle between the upper edge of the asymmetric thread and the horizontal plane is smaller than that between the lower edge of the asymmetric thread and the water level; a circular arc surface is arranged at the transition part of either the upper edge or the lower edge of the asymmetric thread and the vertical surface of the bottom diameter of the asymmetric thread; the helix angle of the asymmetric thread is varied along with the variation of the diameter of the implant; the thread structure can transfer a bite force well, has a good retention force, and can avoid stress concentration; the screw pitch is reasonable, the helix angle has self-lock performance, and the stability is improved; the variable thread depth can reach the optimal bone bonding strength.

The invention discloses a winter tire of a truck and a passenger car, comprising a tire body, wherein the tire body is provided with a tread annular fringe block and the tread annular fringe block is provided with a bulge; the tread annular fringe block comprises a first fine decorative pattern, a middle fine decorative pattern and a second fine decorative pattern, which are in an integral structure; an included angle alpha between the first fine decorative pattern and the middle fine decorative pattern is 120-140 degrees; and an included angle beta between the second fine decorative pattern and the middle fine decorative pattern is 120-140 degrees. According to the winter tire, the tread annular fringe block is provided with the bulges, and the tread annular fringe block comprises the first fine decorative pattern, the middle fine decorative pattern and the second fine decorative pattern which are in the integral structure; and the tread annular fringe block presents a double-bent structure, so that the structure can make an occlusal force of a vehicle tire on a road surface greater and enhance a vertical rigidity of a driving surface of the vehicle tire; and the winter tire is good for working on the road surface in winter.

The invention discloses a correction force test system for a stealth appliance. The correction force test system for the stealth appliance comprises a semi-circular base, simulation jaw correction and anchorage teeth, multiple sensor supports fixed at an edge of the base in an annular array mode, multiple multi-dimension force sensors attached to inner sides of the multiple sensor supports, multiple force transmission connection rods which are respectively connected with the simulation jaw correction and anchorage teeth and correspond to the multi-dimension force sensors, multiple connection members which are respectively connected and fixed with the force transmission connection rods and correspond to the multi-dimension force sensors and the sensor supports, a pair of supporting rods vertically fixed on the base, simulation head bones hinged with the top portion of the supporting rods, simulation jaw teeth fixed with the simulation head bones, a multi-channel signal transmitter, a multi-channel converter, and a signal display and processing device. The correction force test system is advantaged in that correction force and torque of the teeth under the action of the stealth appliance can be precisely measured, and a distribution force system of occlusal force is tested.

The invention discloses a pipe joint, a hydraulic rubber pipe assembly and a hydraulic system. The pipe joint comprises a core rod and a sleeve, the sleeve is arranged on the outer side of the core rod in a sleeving mode, an inserting cavity is formed between the sleeve and the core rod, a plurality of inner teeth extending towards the inserting cavity are formed on the inner surface of the sleeve, and a plurality of arc-shaped circulating grooves corresponding to the inner teeth respectively are formed in the outer surface of the core rod. The occlusal force of the pipe joint to a hydraulic rubber pipe can be improved, the accommodating space of the circulating grooves to the hydraulic rubber pipe is increased to avoid extrusion bumps, the sealing performance of the hydraulic rubber pipe assembly is improved, and the diffusion distance of a rubber material layer is reduced so as to reduce the fatigue damage probability of rubber materials.

The invention provides a large-area mucous membrane support-type false tooth and a production method thereof, which relate to the technical field of artificial false tooth. The large-area mucous membrane support-type false tooth comprises an abutment tissue part, an abutment polishing part, and an artificial tooth; the abutment tissue part and the abutment polishing part are connected, the abutment tissue part is used for abutting against a palate mucous membrane in oral cavity, an upper alveolar ridge mucosa and a lower alveolar ridge mucosa, the abutment polishing part is used for abuttingagainst a lip-cheek mucous membrane of the oral cavity and soft tissue of tongue, the abutment tissue part is connected with the artificial tooth, and a Shore hardness value scope of the abutment tissue part is A20-A80. The elastic buffer of the abutment tissue part is used for compressing the mucous membrane and the bone, ache generation is reduced, and the patient satisfaction is increased; a tight sealing degree of the false tooth tissue is increased, the false tooth edge is enclosed, overlarge or nonuniform occlusal force is buffered and absorbed, the material is stretched in a tissue undercut area, so that retention capability of a restoration body is increased, and the muscle and joint of the patient are coordinated, so that the mastication efficiency is increased.