11 results about "Lower dentition" patented technology

The invention provides an occlusion induction appliance for a tooth replacement period, an orthodontic system for guiding jaw growth in the tooth replacement period and a design method of the orthodontic system. The occlusion induction appliance for the tooth replacement period comprises an upper jaw tooth socket and a lower jaw tooth socket, a lower jaw brace; the intermaxillary connecting body is positioned between the occlusal surfaces of the back tooth areas of the upper jaw tooth socket and the lower jaw tooth socket; wherein the upper jaw tooth socket and the lower jaw tooth socket form a rigid integral structure which cannot move relatively on an occlusal surface through the intermaxillary connector; the intermaxillary connecting body has a preset thickness so as to open occlusion contact of upper and lower anterior teeth in a wearing state, and the intermaxillary connecting body is configured to lock the lower jaw tooth socket at a preset three-dimensional space position relative to the upper jaw tooth socket body; when the occlusion induction appliance for the tooth replacement period is worn, the upper dentition and the lower dentition serve as integral interactive anchorage, and the occlusion force is converted into the orthodontic force acting on the dentition or the jaw bone.

This invention discloses a method for extending the action time of oral care paste, relating to the field of oral care technology. The method uses a pair of soft silicone braces, each adapted to the upper and lower dentition, to evenly apply the oral care paste to the tooth-contacting area on the inner wall of the braces. After wearing, a sealed working space is formed, allowing the paste to continuously act on the tooth surface within this enclosed environment. After the preset care time is reached, the braces are removed to complete the care process. This invention completely prevents paste loss through a sealed environment, significantly extending the action time, improving the utilization rate of active ingredients, and is simple to operate, comfortable to wear, and applicable to various functional oral care pastes, covering the entire dentition, making it suitable for long-term daily use at home.

The present disclosure provides methods, computing device readable medium, and devices for dental appliances with repositioning jaw elements. An example of a method can include moving at least one tooth with a dental appliance having a first shell configured to receive a plurality of teeth of a patient's upper dentition and separating an upper dentition of a patient from a lower dentition of the patient utilizing the dental appliance. The dental appliance may interface a first surface of a first repositioning jaw element of the first shell with a second surface of a second repositioning jaw element of a second shell of the dental appliance. The dental appliance separates occlusal surfaces of the plurality of teeth of the patient's upper dentition from occlusal surfaces of the plurality of teeth of the patient's lower dentition as the patient moves to a fully engaged sagittal jaw position.

The utility model discloses a shell-shaped dental instrument which comprises a first shell-shaped body and a second shell-shaped body, the first shell-shaped body and the second shell-shaped body are used for containing an upper dentition and a lower dentition respectively, and the first shell-shaped body and the second shell-shaped body are provided with a guide block and a guide block in a protruding mode in the direction opposite to the jaw on the occlusal face of a rear tooth area respectively. The guide surface of the guide block interacts with the guide surface of the guide block and guides the lower jaw to move from an initial position to a target position in the sagittal direction, an occlusal stabilizing part is arranged on the occlusal surface, facing the opposite jaw, of the guide block, and the occlusal stabilizing part is used for enabling the guide block and the second shell-shaped body to be stably occlusal at the target position in the sagittal direction when the lower jaw moves to the target position. An auxiliary occlusion part is arranged on the occlusal surface, facing the opposite jaw, of the guide block, the surface, facing the opposite jaw, of the auxiliary occlusion part is a plane, or the protruding height of the guide block meets the requirement that when the guide block is located at the target position, a gap is formed between the surface, facing the opposite jaw, of the auxiliary occlusion part and the surface of the corresponding occlusion position of the first shell body of the opposite jaw.

The application discloses a kind of orthodontic appliance after orthognathic surgery without bracket, including: upper jaw appliance and lower jaw appliance, and several pads, several pads are located in the opposite side of upper jaw appliance and lower jaw appliance, to make upper jaw appliance and lower jaw appliance exist occlusal clearance.Therein, at least one pad is provided with guide structure along occlusal direction, for making upper jaw appliance and lower jaw appliance keep preset relative position in occlusion state. On the one hand, by setting pad, upper jaw appliance and lower jaw appliance can be blocked to avoid individual tooth contact to form fulcrum swing, leading to unstable occlusion of upper and lower jaw bones;On the other hand, upper and lower dentition is unique in rest position, reduce the force of appliance on teeth and affect the stability of jaw bone. In addition, the application realizes that during use, it can avoid the displacement of upper and lower jaw bones caused by intermaxillary traction, consolidate the purpose of orthognathic treatment effect.

The utility model discloses a buckle connecting device based on bracketless invisible corrector. The device includes bracketless invisible corrector, connecting groove body and connecting head, and the front part of bracketless invisible corrector is provided with connecting groove body, and bracketless invisible corrector and connecting groove body are integrally made, and connecting head is connected with bracketless invisible corrector by cooperation with connecting groove body, and connecting groove body and connecting head are all provided with arc part that is in accord with the front side of bracketless invisible corrector, and the arc part between connecting groove body and connecting head is connected through ball head structure. The device can conveniently and stably install components to upper dentition or lower dentition, and can extend to outside of oral cavity through connecting head, and does not need glue and tooth abrasion, and is a non-invasive, convenient and painless connecting device.

The invention relates to the technical field of medical treatment, and discloses a handheld portable oral cavity digital model observation and analysis system, which is characterized in that after data obtained by handheld three-dimensional optical scanning equipment is subjected to digital model observation and analysis processing, an intraoral digital three-dimensional model established by three-dimensional digital information images of upper and lower dentitions is rotated, magnified and shrunk at any angle, and a digital three-dimensional model is obtained; according to the observation angle and direction, the position, depth and angle of the undercut are automatically displayed, observation lines corresponding to the angle and direction are displayed, sectioning and measurement are carried out on the intraoral digital three-dimensional model, and two-dimensional intelligent planning design is carried out. According to the invention, the whole process is dynamic and visible, the observation position is variable, random adjustment, measurement and repetition can be realized, handwriting recording is not needed, the generated digital information is convenient for mass storage, analysis design and remote communication, and the true color three-dimensional occlusion conditions of upper and lower dentitions and the influence of the true color three-dimensional occlusion conditions on the observation angle can be displayed at the same time.

The invention relates to the technical field of radiotherapy equipment, and discloses a hollowed-out oral cavity radiotherapy stent which comprises an oral cavity stent body, the oral cavity stent body is composed of an upper jaw protection sleeve 1 and a lower dentition protection sleeve, the upper jaw protection sleeve 1 and the lower dentition protection sleeve are both composed of 3D printing resin, and the 3D printing resin is polypropylene composite resin. The polypropylene composite resin is composed of 40% of polypropylene, 40% of polyethylene, 15% of inorganic filler and 5% of nucleating agent, the interiors of the upper jaw protection sleeve 1 and the lower dentition protection sleeve are hollow, the hollow parts of the upper jaw protection sleeve 1 and the lower dentition protection sleeve are filled with a barium sulfate solution, and the barium sulfate solution is composed of 28-50% of barium sulfate, 2-10% of suspension material and 40-70% of solvent. The lifting device has the advantages that the lifting device has a protection effect on the oral cavity of a patient during radiotherapy of the patient, and the lifting device is convenient for a user to use and the like.

The utility model discloses a transparent retainer without jaw pad effect, which comprises an upper jaw retainer and a lower jaw retainer, both the upper jaw retainer and the lower jaw retainer are transparent, the upper jaw retainer comprises a cavity A attached to the tongue side surface and the cheek side surface of an upper tooth, and the lower jaw retainer comprises a cavity B attached to the tongue side surface and the cheek side surface of a lower tooth; the upper jaw retainer further comprises an upper jaw retainer occlusal surface cavity, the lower jaw retainer further comprises a lower jaw retainer occlusal surface cavity, the upper jaw retainer occlusal surface cavity penetrates through the bottom of the cavity A, and the lower jaw retainer occlusal surface cavity penetrates through the top of the cavity B; the occlusal surface cavity of the upper jaw retainer and the occlusal surface cavity of the lower jaw retainer avoid the contact part when the upper teeth and the lower teeth are occluded. Interference of upper and lower dentitions on an occlusal surface can be avoided, so that the upper and lower dentitions can be in direct contact, any early contact point cannot be caused, the occlusal surface cannot be raised, and the orthodontic appliance does not bear occlusal force, so that stress damage is avoided.

This invention provides an occlusal guiding appliance for the mixed dentition period, an orthodontic system for guiding jawbone growth during the mixed dentition period, and a design method thereof. The occlusal guiding appliance for the mixed dentition period includes: a maxillary brace; a mandibular brace; and an intermaxillary connector located between the occlusal surfaces of the maxillary and mandibular braces in the posterior region. The maxillary and mandibular braces form a rigid, immovable integral structure at the occlusal surfaces via the intermaxillary connector. The intermaxillary connector has a preset thickness to open the occlusal contact between the upper and lower anterior teeth when worn, and is configured to lock the mandibular brace at a preset three-dimensional spatial position relative to the maxillary brace body. This allows the occlusal guiding appliance for the mixed dentition period to use the upper and lower dentitions as an integral interactive anchor when worn, converting occlusal force into orthodontic force acting on the dentition or jawbone.

The invention relates to a mandibular advancement device with a stabilizing structure. The mandibular advancement device comprises an upper tray assembly and a lower tray assembly, wherein the upper tray assembly is formed by an upper moldable part and an upper support, and the lower tray assembly is formed by a lower moldable part and a lower support. The front side edges, close to the lip side, of the upper support and the lower support extend to form a front wall, and at least the rear side edge, close to the tongue side, of the lower support extends to form a rear wall on the median sagittal plane. The stabilizing structure enables at least the front wall of the upper support to incline towards the lingual side and is used for being attached to the maxillary dentition when the patient is shaped. The rear wall of the lower support and the front wall clamp the mandibular dentition together and also have the function of preventing the lower moldable component from sliding off. In some cases, the stabilizing structure further comprises a molar clamping part, the molar clamping part at least comprises a front wall and a rear wall at the contact position of the upper bracket and the molar, and the mandibular advancement device is more stable through the design of the front wall and the rear wall of the part. The lower jaw advancing device is further provided with protrusions on the upper support and the lower support.