84 results about "Bite force quotient" patented technology

A device used in conjunction with fixation hardware to provide a two-stage process to address the competing needs of immobilization and re-establishment of normal stress-strain trajectories in grafted bone. A method of determining a patient-specific stress/strain pattern that utilizes a model based on 3D CT data of the relevant structures and cross-sectional data of the three major chewing muscles. The forces on each of the chewing muscles are determined based on the model using predetermined bite forces such that a stiffness of cortical bone in the patient's mandible is determined. Based on the stiffness data, suitable implantation hardware can be designed for the patient by adjusting external topological and internal porous geometries that reduce the stiffness of biocompatible metals to thereby restore normal bite forces of the patient.

A method and a device for effecting the cordless retraction of the gingival sulcus tissue prior to the taking of an impression of a tooth for making a crown or bridge which is attained by controlling any bleeding in the gingival sulcus area, and utilizing a dental dam preferably formed of a sponge or foam like material to contain an astringent fortified silicone impression material embedded about the prepared tooth, and using the patient's biting force to apply the necessary pressure onto the dam until the silicone impression material sets and adheres to the dam to enhance easy removal of the set impression material from the tooth. The dam is formed to accommodate either the posterior teeth or the anterior teeth.

An apparatus, in particular a dental splint, for the measurement of occlusal forces in case of a terminal occlusion of teeth comprises at least one sensor which is arranged outside of an occlusion region of the apparatus. A system for the diagnosis or treatment of bruxism serves to determine the position or the size of occlusal forces on the apparatus. A method allows exact localization and quantitative determination of occlusal forces on the apparatus.

The invention relates to a hoop type adjustable head used for an inner support of foundation pit engineering and a construction method thereof. The hoop type adjustable head can be arranged at any position of a steel support; the principle is that two synchronous jacks apply additive axial forces, a nick is machined in the inner side of the hoop, the axial forces are borne and transferred through the utilization of a friction force and an occlusion force between a hoop and an inner pipe, and the force transfer way is reliable. The adjustable head comprises the hoop and the inner pipe, wherein two jack trays are symmetrically welded at the left and the right of a hoop flange, hoop wing plates are welded at the upper side and the lower side, and high-intensity bolts are mounted. According to the invention, the problems of poor integrity and unreliable force transfer of the existing steel support system are solved efficiently, the construction safety is improved, strong operability, safe and fast construction and convenient detachment are achieved, the hoop type adjustable head can be used repeatedly, the unsafe method of driving a steel wedge in the steel support adjustable head to bear and transfer the axial forces via a point contact way is replaced, and promotional values and development foreground are achieved.

The invention discloses a zirconium oxide tooth implantation system, and is characterized in that all devices are made of zirconium oxide. The system is divided into a one-stage type and a two-stage type. A one-stage type implantation body is provided with screw threads, the surface of a dentogingival part is smooth, and the body is combined with the base station integrally. The surface of the two-stage type implantation body has a smooth type and a screw-thread type, and the implantation body and the base station is embedded with each other by polyhedral angle and Moll's taper and is connected and fixed by the central screw nail. The invention has the following advantages that: the zirconium oxide implantation body without toxic side effect is capable of being integrated with alveolar bone; the total porcelain crown supported by the zirconium oxide base is attractive in appearance; and the zirconium oxide implantation teeth can resist the functionating of good occlusal force without influencing CT and nuclear magnetic imaging inspection.

A dental x-ray sensor assembly includes a bite block used for digital imaging, wherein a surface of the bite block includes a deformable material that readily returns to an undeformed position after a biting force is removed therefrom.

The present invention provides a personalized lower jawbone biomechanics model stress measurement system. The system comprises a measurement pedestal, a muscle strength equivalent structure, the fixing device of the muscle strength equivalent structure, an articular disc fixing device, a loading platform and a strain gage. The fixing device of the muscle strength equivalent structure, the articular disc fixing device and the loading platform are installed on the measurement pedestal, the personalized lower jawbone biomechanics model includes a lower jawbone and two temporal-mandibular joint discs, the lower jawbone is provided with the spring hanger of the upper jaw muscle group, the strain gage is pasted at the measurement region of the lower jawbone, the two temporal-mandibular joint discs are fixed in the articular disc fixing device, two condyles on the lower jawbone model are arranged in the articular disc, the teeth for bearing the bite force in the lower jawbone model is contacted with the motion end of the loading platform, the lower end of the muscle strength equivalent structure is connected with the spring hanger, and the upper end of the muscle strength equivalent structure is connected with the fixing device of the muscle strength equivalent structure. The personalized lower jawbone biomechanics model stress measurement system can express the patient's real condition and has good measurement accuracy.

The invention designs a spiral fin grouting anchor cable assembly with an adjustable angle. The spiral fin grouting anchor cable assembly comprises an anchor cable body and an anchorage device, wherein the anchor cable body is formed by stranding steel strands by taking a grouting pipe as a cable core; the grouting pipe is in a pipe shape, and is composed of a cement outlet, a cement spraying hole and a grouting opening; the anchorage device comprises a tray, an anchor ring and an anchor cable clamping piece, wherein a hemispherical concave table of the tray is matched with a hemispherical protruding end of the anchor ring; the anchor cable body penetrates a through hole of the tray, and penetrates out from an anchoring hole of an anchor ring cylinderical end through the matched tray and anchor ring; the anchor cable body is clamped by the anchor cable clamping piece in the anchoring hole; the anchorage device and an anchor cable are enabled to always keep vertical after being stressed by the anchorage device through a self-adjusting function, so that a bite force can be guaranteed to be uniform; under an equivalent acting force, the probability that the anchorage device drops off and glides can be greatly reduced. With the adoption of the spiral fin grouting anchor cable assembly with the adjustable angle, the combination of anchor cable support effect and grouting reinforcement effect is realized, so that the anchoring range and the anchoring force are greatly increased, and the consumption of a drill hole drilling machine and anchor cable materials is saved, thereby the cost is lowered.

The invention discloses a comprehensive tooth measuring instrument, and belongs to the field of tooth detection. The comprehensive tooth measuring instrument comprises a tooth occlusion acquisition unit, a gomphiasis acquisition unit, a tooth sleeve, a data acquisition card, a data processing unit, a wireless communication unit and a controller, wherein the tooth occlusion acquisition unit and the gomphiasis acquisition unit are mounted on the tooth sleeve; the data processing unit is used for processing information acquired by the data acquisition card and used for transmitting the processed information to the controller; the tooth occlusion acquisition unit and the gomphiasis acquisition unit are both membrane three-dimensional pressure sensors. Due to cooperation and precise measurement of the tooth occlusion acquisition unit and the gomphiasis acquisition unit, the sensors are improved, the thickness is reduced, the detection accuracy can be very slightly affected, great reference values of occlusal force measurement and odontopathy diagnosis and treatment are achieved, and the problems that in the prior art, the detection result is not accurate and large in difference and the data are not reliable are solved.

The invention discloses a novel gel thin-film capacitive sensor for measuring occlusal force of a single pair of teeth and a method. The sensor comprises an insulating medium, wherein two layers of ionic gel serving as electrolyte are pasted to the upper surface and the lower surface of the insulating medium respectively; the insulating medium and the ionic gel are both soft and transparent and form a capacitor capable of changing along with pressure change; since two layers of ionic gel are pasted to the upper surface and the lower surface of the insulating medium respectively, the influence of an external stray capacitor on a measured result is avoided; a wire leading out of a metal electrode is connected to a collection card to form an ion-electron mixed current circuit to obtain a capacitance signal, and time-varying data of the occlusal force of a single pair of teeth are obtained through data operation; by the adoption of a novel gel material, it is ensured that the occlusal force of the teeth is measured accurately on the condition of truly restoring occlusion of the teeth to the greatest extent; the material has good repeatable measurement accuracy and is low in cost, easy to process, capable of being used in a one-off mode, clean and sanitary, and high transparency enables a user to observe changes of the teeth while the sensor transmits electric signals.

The invention relates to a locknut which comprises a nut body, and is characterized in that a friction surface for increasing the frictional force between the end surface of the nut body and a contact surface is arranged on the end surface of the nut body. Because the invention adopts the technical scheme that a friction surface is additionally arranged on the end surface of the common nut, a larger frictional force exists between the nut and the contact surface after installation and use, thus the nut can not loosen easily and achieves the purpose of locking when a connector is in a vibration environment for a long time. When the nut is removed, only a wrench is used for overcoming the snap-in force to remove the nut easily, so that the invention has the advantages of good locking effect, simple and reliable structure, no need of special tools for installation, wide applicable environment, no requirements for special technical parameters in design, and convenience in manufacture.

The invention provides a bite force measuring device. The bite force measuring device comprises a bite sensing sheet, a pressure measuring module and a wireless signal transmission module, wherein thebite sensing sheet is internally provided with a pressure sensor; the pressure sensor is provided with an electric parameter which changes along with pressure; the pressure measuring module is used for measuring the electric parameter of the pressure sensor and calculating a pressure value according to the electric parameter; and the wireless signal transmission module is coupled to the pressuremeasuring module, receives the pressure value from the pressure measuring module and transmits the pressure value. The tooth biting force measuring device is convenient to use, is safe and reliable, is high in measuring precision, and does not cause discomfort to a patient in a using process.

The invention relates to a mouth-holding type vibration cleaning toothbrush system which comprises a un-type bristle head, a motor, an eccentric rotation mechanism, a fixed boss and an occlusion boss on the fixed lug boss, wherein bristles forming certain angles with the teeth are placed on the inner side of the un-type bristle head, the un-type bristle head is capable of enclosing the upper teeth and the lower teeth of a person and ensures that the bristles can be in contact with all surfaces, needing to be brushed, of the teeth; the motor, the eccentric rotation mechanism, the fixed boss and the occlusion boss on the fixed lug boss are rigidly connected to a rigid structure member so that a rigid integer is formed. Because of a special structure, an occlusion force of the front teeth enables the whole rigid integer to be static relative to the teeth; the rigid integer enables the vibration to be transmitted to the un-type bristle head through a vibration transmission shaft so that the purpose of cleaning the teeth through vibration is achieved. The mouth-holding type vibration cleaning toothbrush system can be completely held in the mouth and can be used for simultaneously cleaning all teeth, so that the convenient and rapid performances are provided.

The invention discloses a multi-direction biting force measuring device based on a force sensor. The multi-direction biting force measuring device comprises a detachable outer shell and a plurality of groups of measuring systems arranged in the outer shell, wherein the outer shell comprises an upper shell body and a lower shell body, the plurality of groups of measuring systems comprise a main measuring system with one end connected to the inner wall of the outer shell and the other end pushing against the inner wall of the outer shell, and an auxiliary measuring system with one end connected to the main measuring system and the other end connected to the inner wall of the upper shell body or the inner wall of the lower shell body. The multi-direction biting force measuring device based on the force sensor overcomes the defect that an existing instrument cannot measure the specific direction of the biting force, the real-time positive pressure is measured on the basis of pressure sensors of the measuring systems in four directions, the real-time measurement for the magnitude and direction of the biting force when a pair of upper and lower teeth chews an object can be realized, the multi-direction biting force measuring device can be used for diagnosis and treatment for oral diseases, the biting force measuring device provided by the invention can be repeatedly used, and the spherical outer shell can also provide a true chewing feeling when biting force of a person is measured.

The invention discloses a bite force measurement method based on computer aid. The method includes the following steps that firstly, a bite force measurement instrument is connected with a computer, and the computer has an analyzing system and a display system; secondly, a user puts his/her strength to bite a bite mold of the bite force measurement instrument many times within the time of t; thirdly, the analyzing system of the computer draws bite force data within the time of t, and the data include the extreme value, the increasing and attenuating speed and the average bite force of bite force within the time of t; fourthly, the bite force data in the third step are displayed on the display system of the computer.

The invention relates to an artificial tooth body having a vertical type bone beam structure. The artificial tooth body comprises an abutment and an artificial gum, wherein the abutment is connected to the upper part of the artificial gum to allow an artificial crown to be connected; the artificial gum is formed by the erection of a plurality of vertical type bone beams; each vertical type bone beam is formed by longitudinal and horizontal connection of a supporting column which extends in the direction of bite force and a strengthening beam which is perpendicular to the bite force; and the extending direction of the supporting columns is the same as the transmitting direction of the bite force, so that when being borne with the bite force, the vertical type bone beam structure can maintain forward stress, bending force cannot generate, the supporting columns cannot be subjected to structural deformation because of stress, and the vertical type bone beam structure can improve the supporting intensity of the artificial tooth body. According to the artificial tooth body disclosed by the invention, the vertical type bone beam structure can bear the bite force in an initial stage of dental implant, and the artificial tooth body can immediately have the function of original teeth; and besides, osteocytes can grow in the inner part of the artificial tooth body, so that the artificialtooth body is merged with a tooth socket bone integrally.

The invention relates to a dental floss pen for children, which comprises: a dental floss stick, a dental floss tooth 1, a dental floss tooth 2 and dental floss. The position is connected to the second tooth of the dental floss through a mobile connection, and the two ends of the dental floss are fixedly connected to the first tooth of the dental floss and the lower end of the second tooth of the dental floss. The invention presses the dental floss into the adjacent space of the teeth through the occlusal force , the occlusal force works directly, and can press the dental floss into the tight adjacent space. At the same time, the occlusal force can be precisely controlled, and the occlusal action can be stopped instantly, so it can avoid the floss from damaging the gums to the greatest extent. The dental floss is pressed into the inter-proximal space through the occlusal action, and the fingers do not enter the mouth, which can effectively ensure hygiene. The pen-like handle is easy for parents to hold and provides stability to prevent injury.

The invention discloses an electric insulated clamp. The electric insulated clamp comprises two clamp bodies and a connecting mechanism, wherein each clamp body comprises a jaw, a cheek and a handle which are connected in sequence; the jaw and the cheek form an integral structure; the handle is fixedly connected with the cheek; the two clamp bodies are connected into a whole body through the connecting mechanism arranged in the centers of the clamp bodies; the connecting mechanism comprises a main connecting hole, an auxiliary connecting hole and a connecting shaft; a sliding chute is formed between the main connecting hole and the auxiliary connecting hole. The electric insulated clamp solves the problem that the jaw of the existing insulated clamp is insufficient in bite force and poor in insulating property.

The invention discloses a tooth biting force measuring device based on flexible materials. The tooth biting force measuring device based on flexible materials comprises a flexible tooth sleeve of which openings at two ends are in the shape of an H, wherein the chewing surfaces of upper teeth and lower teeth can be separately embedded into the two openings of the tooth sleeve; a diaphragm is arranged between the two openings; grooves for accommodating the sharp ends of the teeth are formed in the positions which are in contact with the chewing surfaces of the upper teeth and the lower teeth, ofthe two side surfaces of the diaphragm; a micro pressure sensor which can sense the biting force of the upper teeth and the lower teeth is arranged in the diaphragm; and a pressure signal receiving and processing system is in communication connection to the micro pressure sensor. The tooth biting force measuring device based on flexible materials disclosed by the invention can be freely assembledin accordance with different crowds, different tooth types and measured tooth number, and has high applicability; during biting force measuring, the feeling of a human body can be similar to the realfeeling of chewing foods, so that the measuring is realer and more reliable; and the tooth biting force measuring device based on flexible materials is convenient to maintain, low in cost and can berepeatedly used.

A dental flossing device that aids proper oral hygiene between teeth without exerting manual forces. The accordion-like structure of the head unit attaches a floss filament bow of fixed dimension which then attaches to a handle. The unique head unit of the device facilitates the passing of the flossing filament through the contact areas between teeth utilizing biting forces than those of the hands and arms. Accordingly, this eliminates the need to require manual dexterity and exertion while flossing. The retractable head unit can be fabricated using a spring-like mechanism which allows it to collapse and return to its original shape or it may be automated using electrical power.