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14 results about "Dental lamina" patented technology

The dental lamina is a band of epithelial tissue seen in histologic sections of a developing tooth. The dental lamina is first evidence of tooth development and begins (in humans) at the sixth week in utero or three weeks after the rupture of the buccopharyngeal membrane. It is formed when cells of the oral ectoderm proliferate faster than cells of other areas. Best described as an in-growth of oral ectoderm, the dental lamina is frequently distinguished from the vestibular lamina, which develops concurrently. This dividing tissue is surrounded by and, some would argue, stimulated by ectomesenchymal growth. When it is present, the dental lamina connects the developing tooth bud to the epithelium of the oral cavity. Eventually, the dental lamina disintegrates into small clusters of epithelium and is resorbed. In situations when the clusters are not resorbed, (this remnant of the dental lamina is sometimes known as the glands of Serres) eruption cysts are formed over the developing tooth and delay its eruption into the oral cavity. This invagination of ectodermal tissues is the progenitor to the later ameloblasts and enamel while the ectomesenchyme is responsible for the dental papilla and later odontoblasts.

Large Song dynasty kettle door couch with reinforced frame structure

The utility model discloses a Song charm teapot door couch with a reinforced frame structure, which comprises a first frame, a core plate, two carved tooth plates, a second frame and a tincture, the core plate is embedded in the first frame, the tops of the two carved tooth plates are inserted into the bottom of the first frame through connecting insertion rods, and the second frame is connected with the second frame through connecting insertion rods. The two carved tooth plates are distributed at the bottom of the core plate in a bilateral symmetry mode, the second frame is inserted into the bottoms of the two carved tooth plates through the connecting insertion rods, and the Toney is connected to the bottom of the second frame through the square tenons. The carved tooth plate and the first frame are connected through the square tenons, the joists are connected to the second frame through the square tenons, so that a stable frame structure is integrally formed, the longitudinal middle columns and the transverse middle columns are arranged at the bottom of the core plate, the middle supporting force is enhanced, and the stability and the structural strength under the large scale are integrally guaranteed; the service life is prolonged, and the practicability is high.
Owner:CHINA ACAD OF ART

Orthodontic plate having a pair of extended hooks

An orthodontic plate includes a base, a stem, a first arm, a first hook, a second arm and a second hook. The base, the stem, the first arm, the first hook, the second arm and the second hook may be integrally formed with one another. The base that can be affixed to the buccal side of a patient's mouth via a plurality of titanium screws. The stem extends from the base. The first and second arms extend from the stem in a mirrored configuration. Each hook is connected to a distal end of a respective arm. Each hook is configured to be connected to a wire, a spring, a chain, etc., that applies a tensile force or a compressive force to a tooth. The stem, the first arm and / or the second arm can be bent to provide a more comfortable fit in a patient's mouth.
Owner:KING SAUD UNIVERSITY

Tooth plate surface sand blasting device

The invention belongs to the technical field of dental plate sand blasting, and particularly relates to a dental plate surface sand blasting device. The device comprises a sand blasting box and two groups of rotating roller parts which are distributed in the sand blasting box in parallel, and further comprises limiting side plates arranged on the two sides of the rotating roller parts, two groups of front and rear baffle parts are arranged on the two groups of limiting side plates, the two groups of limiting side plates are close to the side surfaces of a tooth plate, and the two groups of front and rear baffle parts are close to the front and rear surfaces of the tooth plate; the two groups of front and rear baffle parts are connected through a butt-joint transverse plate, and an adjusting mechanism for adjusting the distance between the two groups of front and rear baffle parts is arranged between the front and rear baffle parts and the butt-joint transverse plate. A four-direction surrounding type shielding structure for the tooth plate is formed through the limiting side plates on the two sides of the rotating roller part and the two sets of front and rear baffle parts, only the tooth grain surface on the top of the tooth plate is exposed for sand blasting, sand flow is structurally and thoroughly prevented from being splashed to the side faces, the front and rear end faces and the bottom mounting face of the tooth plate, and the matching size and the mounting precision of the tooth plate are effectively protected; and the sandblasting damage rejection rate of the dental plate is reduced.
Owner:TAIYA DIE PLATE MOLD (GUANGDE) CO LTD

Thoracic cavity opening fixator

The utility model relates to the technical field of medical equipment, in particular to a chest distraction fixator which comprises a dental plate and a pair of distraction arms, at least one distraction arm is installed on the dental plate in a sliding mode, each distraction arm is provided with a distraction plate, the distraction arm sliding relative to the dental plate is provided with a rotating handle, and the rotating handle is connected with the dental plate. The device further comprises an auxiliary supporting device, the auxiliary supporting device comprises a rotating sleeve and adjusting arms screwed at the two ends of the rotating sleeve in a threaded mode, the two adjusting arms and the rotating sleeve are opposite in thread screwing direction, connecting blocks are arranged at the outward ends of the two adjusting arms correspondingly, and abutting blocks are hinged to the connecting blocks correspondingly. The two abutting blocks can abut against the inner walls of the outward ends of the two opening arms respectively. The thoracic cavity distraction fixator can keep the distraction degree of the outward ends of the two distraction arms, the operation view field is guaranteed, and meanwhile adjustment is convenient.
Owner:LAIBIN PEOPLES HOSPITAL

A die plate mold surface nitriding apparatus

The utility model provides a kind of tooth plate mould surface nitriding equipment, it is related to surface material modification technical field, the tooth plate mould surface nitriding equipment includes base, heating part, heating part is set on base, heating part is used to heat tooth plate mould, gas supply part, gas supply part is used to provide gas for tooth plate mould surface nitriding in heating part, discharging part, discharging part is used to place tooth plate mould, and can drive tooth plate mould rotation, discharging part can drive tooth plate mould to enter into heating part, this kind of nitriding equipment when using, can change the position of discharging plate on heat insulation wall by controlling the rotation of heat insulation wall, make discharging plate be in the environment outside nitriding equipment, so that staff can conveniently place tooth plate mould on discharging plate, also convenient to quickly take away tooth plate mould after cooling from discharging plate, the convenience of placement and transfer of tooth plate mould is greatly improved, and use effect is good.
Owner:GUOYA MOULD (ZHEJIANG) CO LTD

A composite tooth rolling plate and its tooth rolling process

This invention discloses a composite tooth-rolling plate and its tooth-rolling process, relating to the field of tooth-rolling plate technology. It includes a fixed plate assembly and a movable plate assembly movably connected to one side of the fixed plate assembly. The fixed plate assembly includes a fixed light plate and a fixed tooth plate, and the movable plate assembly includes a movable light plate and a movable tooth plate. The light rod is rotated between the fixed light plate and the movable light plate, and then tooth-rolled between the fixed tooth plate and the movable tooth plate. It also includes a support assembly, each disposed on the opposite side of the fixed plate assembly and the movable plate assembly, comprising a detection element and a support element, both of which are in contact with the bottom chamfer of the light rod. When the detection element detects an increase in the downward pressure applied to the bottom chamfer of the light rod, the fixed light plate moves closer to the movable light plate, and the support element moves downward. Before tooth-rolling, the surface of the light rod is pre-rotated using the fixed light plate and the movable light plate, thereby ensuring that the light rod meets the standards before tooth-rolling and avoiding damage to the fixed tooth plate and the movable tooth plate due to surface roughness or protrusions.
Owner:WENZHOU ZHONGYA MOULD CO LTD

Embedded automatic resistance-resisting mouth-opening training device for patient with oral and maxillofacial injury

The invention relates to the technical field of mouth opening training devices, and discloses an embedded automatic resistance-resisting mouth opening training device for oral and maxillofacial injury patients, comprising: two supports rotatably connected; the tooth plate is arranged at one end of the bracket; the adjusting rod is in threaded connection with one of the brackets; and the sliding assembly is arranged on the bracket. According to the invention, the dental plate can be automatically separated and reset, so that the dental plate can be propped against teeth to open and close the oral cavity, the oral cavity can be trained, the whole process is automatically carried out and is relatively convenient, the dental plate can slide, the dental plate and the teeth can synchronously move, relative sliding between contact surfaces is avoided, abrasion is avoided, and the dental plate can be used for training the oral cavity. And the gustation stimulation liquid is sprayed to the tongue when the dental plates are reset, so that the tongue can be stimulated to retract backwards, the tongue is prevented from moving to the position between the pair of dental plates, and the situation that the tongue is clamped is avoided.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

Thoracolumbar intervertebral disc dissector for total thoracolumbar vertebra resection

ActiveCN120168045BSurgeryIntervertebral discLumbar vertebrae
The present application belongs to the technical field of medical apparatus and discloses a thoracolumbar disc disarticulator special for thoracolumbar vertebral body total resection, which comprises a handle, the outer surface of the handle is fixedly sleeved with an anti-skid ring, the middle part of the bottom end of the handle is fixedly installed with an extension plate, and the rear side of the inner middle end of the extension plate is fixedly sleeved with a limiting rod. The limiting rod, the first gear, the toothed plate, the inclined rod and the movable block are arranged, when the hexagonal handle is rotated, the threaded rod is rotated, since the outer surface of the threaded rod and the inner surface of the movable block are threadedly sleeved, with the rotation of the threaded rod, the movable block moves with one end of the inclined rod, so that the other end of the inclined rod generates a pushing force on the rectangular block, the rectangular block moves with the two toothed plates in opposite directions, so that the toothed plate and the first gear are separated, and then the first gear is pushed to adjust the position of the first gear and is fixed by the toothed plate after the adjustment.
Owner:FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA

Expansion joint device capable of preventing beam from falling

The utility model relates to the technical field of building expansion joints, and discloses an anti-beam-falling expansion joint device which comprises a fixing plate, a positioning hole is formed in the upper surface of the fixing plate, a supporting mechanism is arranged on the outer side of the fixing plate, a promoting mechanism is arranged on the outer side of the fixing plate, and the supporting mechanism and the promoting mechanism are arranged on the outer side of the fixing plate. The tooth plate is fixedly installed on the side wall of the fixing plate, and a supporting block is installed on the side wall of the fixing plate. According to the anti-beam-falling expansion joint device, the tooth plate is supported under the action of the supporting plate, the reset spring enables the supporting plate to achieve the supporting effect on the two fixing plates, then the supporting effect on use of the tooth plate is achieved, and the tooth plate is matched with structures such as a building and a bridge to be subjected to expansion deformation when being affected by factors such as temperature change and load action; the supporting plate can extrude the reset spring to ensure that the width of the expansion joint can be correspondingly adjusted, the semicircular protruding block on the supporting plate facilitates deformation between the two fixing plates, and then stable use of the tooth plate is ensured.
Owner:ANHUI GONGGENG ENGINEERING TECHNOLOGY CO LTD

A dental plate tempering device

The utility model provides a kind of tooth plate tempering device, it is related to tooth plate processing technical field, the tooth plate tempering device includes: heating furnace, placing part, placing part is used to close the side opening of heating furnace, and placing part is used for the placement of tooth plate;Pushing part, pushing part is set on heating furnace, placing part is set on pushing part, and pushing part is used to control the movement of placing part;Driving part, driving part is set on pushing part, and driving part is used to adjust the orientation of placing part, this kind of tempering device can place tooth plate to protection cylinder in advance, then through push rod and motor, control sealing plate away from or close to heating furnace, sealing plate can also be controlled simultaneously rotation, so that the rapid placement and rapid extraction of tooth plate can be realized, and since tooth plate is placed in staggered position, so electric heating tube in heating furnace can also be set in staggered position, and the upper and lower sides of tooth plate can be heated simultaneously, so that tooth plate in any position in heating furnace can maintain substantially the same heating speed.
Owner:GUOYA MOULD (ZHEJIANG) CO LTD

A dental board polishing device

The utility model provides a kind of tooth plate polishing device, it is related to tooth plate processing technical field, the tooth plate polishing device includes: mounting table;Clamping part, clamping part is set on mounting table, and clamping part is used to clamp and fix tooth plate;Deflection part, deflection part is set on mounting table, and deflection part is used to adjust the placement angle of clamping tooth plate on clamping part, polishing part, polishing part is set on mounting table, and polishing part is used to polish the tooth plate clamped on clamping part, this kind of polishing device can be fixed after completing tooth plate, by adjusting the inclination angle of tooth plate, so that tooth on tooth plate will not cause the occlusion of copper wire roller polishing tooth groove bottom, that is, it can polish the burr on tooth and tooth groove bottom simultaneously, polishing efficiency is high, and polishing effect is good.
Owner:GUOYA MOULD (ZHEJIANG) CO LTD

2.5 D tooth arrangement device

The utility model belongs to the technical field of tooth arrangement devices, and particularly relates to a 2.5 D tooth arrangement device which comprises a base assembly and a tooth arrangement plate, the tooth arrangement plate is fixed on an oval ring, and the oval ring is movably connected to the base assembly so that the oval ring can reciprocate up and down, reciprocate left and right and swing in an inclined and reciprocating mode in the vertical direction. The base assembly comprises a base plate and a connecting seat, limiting clamping plates are arranged on the two sides of the upper end of the connecting seat, the locking assembly is arranged between the limiting clamping plates on the two sides, and the locking assembly is a locking bolt. The locking bolts and the limiting clamping plates on the two sides jointly limit movement of the oval ring, the limiting clamping plates on the two sides are locked through the locking bolts so that the oval ring can be locked and fixed, the 2.5 D tooth arrangement device is simple in structure and convenient to use, the angle, the height, the position and the like can be correspondingly adjusted, and the working efficiency is improved. The false tooth manufacturing is facilitated.
Owner:DEZHOU CORNERSTONE ELECTRONIC TECH CO LTD

Thread rolling plate for producing self-locking and high-cuttability screws

ActiveCN224222627UImprove cutting performanceIncrease self-locking abilityScrew-threads articlesDental alveolusIliac screw
A thread rolling plate for producing screws with self-locking and high cutting performance comprises a main thread plate and an auxiliary thread plate. A thread rolling part and a chip removal part are arranged on the main thread plate and the auxiliary thread plate. And the thread rolling part comprises a thread rolling groove and a thread rolling edge. The main tooth plate and the auxiliary tooth plate are provided with a collecting part, a shaping part, a first double-tooth groove and a second double-tooth groove. The first double alveolar socket includes a first alveolar socket, and a first plane. The second double alveolar socket includes a second alveolar socket, and a second plane. The first double-tooth grooves are formed in the constriction part and the shaping part. The depth of the first tooth groove is set to be smaller than the depth of the thread rolling groove, auxiliary cutting is formed on the surface of the self-tapping part, and the cutting performance of the screw is improved. The depth of the second tooth groove is the same as that of the tooth rubbing groove, the self-locking part is formed on the thread, the friction force between the screw and wood is increased, and the self-locking performance of the screw is improved.
Owner:TAIYA RDP MOULD JIAXING CO LTD