25 results about "Gingival margin" patented technology

The utility model provides an invisible appliance which comprises a shell-shaped body and a tongue muscle training piece, and the shell-shaped body is provided with a cavity for accommodating a plurality of maxillary teeth; the tongue muscle training piece is connected to the lingual gingival margin of the shell-shaped body or adjacent to the gingival margin, and is provided with a sensing cavity and a sensing opening for exposing the sensing cavity; wherein the sensing port is positioned on the tongue side of the tongue muscle training piece; the tongue muscle training piece is provided with a sensing cavity and a sensing opening exposing the sensing cavity, the sensing opening is located in the side, facing the tongue body, of the tongue muscle training piece, the tongue of a user completes tongue muscle training by touching the sensing opening and partially stretching into the sensing cavity, the experience feeling and interestingness are good, the training enthusiasm of the user can be stimulated, and the user experience is improved. And the tongue muscle training effect is improved.

To provide an intraoral light irradiating device which not only accurately irradiates light onto the gingival margin and free gingiva over the entire dentition of a user, but also gives an excellent wearing feeling when the user wears a mouthpiece deep in the oral cavity. [Solution] In an intraoral phototherapy device having a mouthpiece 1 and a light source 2 disposed thereon and equipped with a plurality of light emitters 20, the mouthpiece has an occlusion tray 3 and front and rear flanges 4, 5 that face the outer and inner surfaces of the wearer's upper and lower gums, respectively, and the upper and lower edges of the front flange are provided with recesses 4c in which the wearer's upper and lower frenulum are respectively positioned, and the upper and lower edges of the rear flange are provided with recesses 5c in which the wearer's palatine raphe and lingual frenulum are respectively positioned.

A mouthpiece (10) for distribution of a liquid in a user's mouth, the mouthpiece (10) being configured to be positioned within a superior vestibule of the user's mouth apical to a gingival margin, the mouthpiece (10) comprising: an inlet (12) configured to receive a fluid supply, at least two fluid outlets (22), and an internal channel (14) fluidly connecting the inlet (12) to the fluid outlets (22); and a flange portion (16) at least partially surrounding the channel (14) for adhering to a user's gum; wherein a thickness of the channel (14) is greater than a thickness of the flange portion (16).

The invention relates to the technical field of electric toothbrushes, in particular to a cleaning brush for dental implants. Comprising a housing; the control switch is mounted on the outer wall of the shell; the mounting shell is arranged at the top of the shell; the sound wave motor is installed in the shell, and the sound wave motor is electrically connected with the control switch; and the rotating rod is rotationally connected to the interior of the mounting shell, an insertion hole is formed in the bottom of the rotating rod, an output shaft of the sound wave motor is inserted into the insertion hole, and a spiral groove is further formed in the upper end of the rotating rod. The sound wave motor can drive the rotating rod to do small-amplitude and high-frequency reciprocating forward and reverse rotation, the spiral groove in the rotating rod is matched with the ball on the inner side of the sliding sleeve, and rotation can be converted into transverse high-frequency reciprocating movement of the sliding sleeve and the first brush and the second brush connected to the sliding sleeve; the transverse movement direction is matched with the trend of an annular gingival margin area at the junction of a dental crown and gingiva of the implant tooth, so that bacterial plaque biofilms accumulated in a high-risk area can be effectively removed.

A clear aligner, comprising a shell-shaped body and a tongue muscle training member, wherein the shell-shaped body has a cavity for accommodating a plurality of maxillary teeth; and the tongue muscle training member is connected to the lingual gingival margin of the shell-shaped body or adjacent to the gingival margin, and has a sensing cavity and a sensing port exposing the sensing cavity, the sensing port being located on the lingual side of the tongue muscle training member. A user trains tongue muscles by touching the sensing port with their tongue and partially extending their tongue into the sensing cavity, such that a relatively good sense of experience and enjoyment are provided, the enthusiasm of the user for training can be stimulated, and a tongue muscle training effect is improved.

This invention belongs to the field of medical experimental technology, specifically relating to a dental pre-anesthesia device based on an edible matrix, its preparation method, and its application. The device includes a handheld stick, a sugar ball, and a receiving box with a through hole. The box contains a gel anesthetic, which consists of an outer layer of sustained-release gel matrix and an inner anesthetic gel unit. The sustained-release gel matrix is ​​made of gelatin, pectin, or sodium alginate and is ring-shaped to conform to tooth shape. The anesthetic gel unit contains components such as lidocaine hydrochloride, chitosan, and carbomer 980, exhibiting high adhesiveness. Preparation involves first obtaining the anesthetic gel unit, then encapsulating it with the sustained-release gel matrix and coating it with sugar, and finally assembling the device. This device, through its edible matrix and sugar coating, transforms the anesthesia process into a "candy-eating" experience, significantly reducing patient fear, precisely conforming to the teeth and gingival margin, preventing anesthetic leakage, and improving the safety and effectiveness of anesthesia, making it particularly suitable for pediatric dental pre-anesthesia.

The utility model discloses a tooth correcting device. Belongs to the technical field of orthodontics, the orthodontic appliance comprises a plurality of fixing pieces, a connecting piece and a traction assembly, the fixing pieces are suitable for being fixed on a plurality of anchorage teeth in a one-to-one correspondence mode, the traction assembly comprises a traction hook, a connecting buckle and a traction line, the traction hook is provided with a traction end and a connecting end, the traction end is located on the lingual side of an affected tooth, and the connecting end is connected with the connecting piece; or the traction end is located on the cheek side of the diseased tooth, the connecting end is connected with the fixing piece, the connecting buckle is bonded to the side, facing or away from the traction end, of the diseased tooth, and the traction end is connected with the connecting buckle through a traction line so as to apply correction force for correcting jaw locking to the diseased tooth, so that the diseased tooth is reset towards the interior of the alveolar bone, and correction of jaw locking of the diseased tooth is achieved. The traction ends are located on the sides, away from the occlusal surface, of the gingival edges of the corresponding diseased teeth, correction force comprises gingival press-in force, and the diseased teeth can be effectively prevented from stretching in the correction process.

The invention relates to the technical field of oral cavity plastic surgery, in particular to a manufacturing method of a digital buckle type guide plate for dental crown lengthening, which comprises the following steps of: 1, scanning an upper jaw dental arch and a lower jaw dental arch of a patient to obtain intraoral scanning data, recording an occlusion relationship at a maximum tooth tip staggering position, and exporting the data for later use; step 2, acquiring facial three-dimensional scanning data, alveolar bone and craniofacial structure data, digital facial arch data, mandibular position and mandibular movement parameters of the patient; 3, fitting various data to determine ideal gingival margin position parameters and bone trimming contour line parameters required in the operation; and 4, on the basis of the parameters determined in the step 3, buckle type guide plates are designed in design software, the buckle type guide plates comprise a gingival resection guide plate and an osteoplasty guide plate, and finally the buckle type guide plates are printed through a 3D printer. By implementing the buckle type guide plate prepared by the method, the stability, the accuracy, the operation convenience and the operation efficiency in the operation process of the dental crown extension surgery are remarkably improved.

The invention discloses an oral implant planning method, equipment, a medium and a product, and belongs to the technical field of medical image processing. The method comprises the following steps: acquiring oral scanning data and CBCT data of a target object, a registration result of the oral scanning data and the CBCT data, and gingival margin line data and virtual dental crown data of an edentulous area in the registration result; and inputting the gingival margin line data, the virtual dental crown data, the CBCT data and the intentional brand identifier into a rule-based implant parameter decision model to obtain implant parameter data for the tooth missing area of the target object, the rules comprise a current oral implantology principle, a predetermined expert experience principle and implant attribute data under at least one predetermined implant brand, the implant parameter decision model is realized based on an expert decision tree in combination with a constraint satisfaction planning algorithm, and the parameter data comprises an operation implantation direction and attribute data of the implant. According to the embodiment of the invention, the false tooth use experience of the target object can be improved.

A method for measuring periodontal disease and treating diseases associated therewith includes: obtaining B-mode ultrasound images of a dentition and periodontium of a patient; identifying gingival margin (GM), alveolar bone crest (ABC), cementoenamel junction (CEJ), periodontal ligament (PDL), and gingival edge (GE) biomarkers on the B-mode ultrasound images, the GE biomarker being a part of periodontal soft tissue most distal from a tooth surface; evaluating a metric associated with periodontal disease using one or more of the GM, ABC, CEJ, PDL and GE biomarkers and based at least in part on the evaluating, performing an act that implements and / or adjusts a therapeutic treatment of a periodontal disease.

A mouthpiece 10 for distribution of a liquid in a user’s mouth, the mouthpiece 10 being configured to be positioned within a superior vestibule of the user’s mouth apical to a gingival margin, the m

An attachment that effectively reduces the incidence of undercut and improves the overall efficiency of tooth movement includes an attachment body with a gingival portion and a vertical portion. The vertical portion includes a mesial portion located mesially to the crown and a distal portion located distally to the crown. The gingival portion is close to the gingival margin and located slightly below the undercut of the crown. Both the gingival portion and the vertical portion have opposing lingual and buccal surfaces, opposing occlusal and gingival surfaces, and opposing mesial and distal surfaces. The lingual surface is bonded to the tooth surface. The gingival, occlusal, mesial, and distal surfaces are all arc-shaped or spherical. This structural design not only greatly increases the undercut of the tooth but also provides multiple contact areas and a larger force application area with the orthodontic appliance, providing more effective coverage area for mesial or distal tooth movement. This effectively reduces the incidence of undercut and improves the overall efficiency of tooth movement.

The application relates to a gum edge line generation method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a single tooth edge line to obtain a tooth gum edge line; calculating a gum contour line according to the tooth gum edge line, and calculating a gum edge line according to the gum contour line; and updating the gum edge line according to a tooth displacement data table to obtain an updated gum edge line. The method can automatically cut a tooth corrector, improve the production efficiency of the tooth corrector and reduce the production cost. Meanwhile, the application improves the precision of gum edge cutting of the tooth corrector, so that the gum is not damaged when a user wears the tooth corrector, and the comfort of the user wearing the tooth corrector is improved.

This invention discloses a method for evaluating the effective bonding area of ​​proximal surfaces of bridge abutments in Maryland. The method involves acquiring a three-dimensional digital model of the oral cavity containing the target abutment tooth, standardizing the model to construct a standardized triangular mesh, extracting sampling point clouds, and establishing a correspondence between sampling points and mesh patches. Tooth position segmentation is performed on the sampling point cloud to determine the target abutment tooth and its adjacent teeth. Integrity detection is performed on the proximal surface region of the target abutment tooth, and data completion is performed when missing or distorted data is detected. Interactive three-dimensional segmentation is performed based on the surface data of the target abutment tooth to obtain the proximal surface segmentation results. Constraints are then applied using enamel boundaries, gingival margin safety distances, incisal or occlusal boundaries, and undercut exclusion conditions to obtain the effective bonding area. The effective bonding area is mapped to the standardized triangular mesh, and the three-dimensional surface areas of the corresponding mesh patches are accumulated to output the effective bonding area evaluation result.

The present invention belongs to the field of digital stomatology, and in particular relates to a method for tooth and jaw segmentation based on optimal seed points of harmonic field scalar intensity, which can quickly and accurately find the gingival margin line on the tooth and jaw 3D model. The steps include: picking feature points on each tooth 3D model in the tooth and jaw 3D model. Constructing a segmentation domain for each tooth 3D model, and constructing a harmonic field within the segmentation domain, and assigning scalar values ​​to mesh vertices through the harmonic field. Screening is performed based on the scalar values ​​of the mesh vertices to obtain an initial screening area and a final screening area, and the final screening area is clustered to obtain a class area. Interpolating the one-ring neighborhood edges of the mesh vertices in the initial screening area, and adding the interpolation points to the corresponding sets according to the scalar values. Based on the one-ring neighborhood vertices of the mesh vertices in the class area and the scalar values ​​of the interpolation points, the scalar intensity of the mesh vertices in the class area is calculated, and the optimal seed point is obtained. The tooth gingival margin line is extracted based on the optimal seed point and the tooth and jaw segmentation is completed.

This invention relates to the field of dental restoration technology and discloses a method for fabricating a 3D-printed resin filling guide. In clinical practice, the affected tooth is prepared and color matched. Three-dimensional data of the patient's upper and lower jaw dentition and the prepared abutment tooth data are obtained through digital oral scanning, along with the occlusal relationship. The abutment tooth data includes the abutment tooth size, axial direction, and gingival margin morphology. The 3D-printed resin filling guide fabrication method provided by this invention, utilizing digital design and 3D printing technology, creates a resin filling guide that meets the patient's personalized needs. This fundamentally overcomes many drawbacks of existing dental resin restoration techniques, achieving precision, personalization, and minimally invasive dental resin restoration, while improving clinical operational efficiency and patient satisfaction with aesthetic treatment.

The dental instrument is worn on the maxillary dentition and comprises a shell-shaped body and a palate device connected with the shell-shaped body, the shell-shaped body comprises a first section and a second section, the first section is provided with a tooth containing cavity for containing at least one tooth in a left rear tooth area, and the second section is provided with a tooth containing cavity for containing at least one tooth in a right rear tooth area. The second section is provided with a tooth accommodating cavity for accommodating at least one tooth in the rear tooth area on the right side; one side of the palate device is connected to the lingual side gingival margin of the first section, the other side of the palate device is connected to the lingual side gingival margin of the second section, and the whole palate device is arranged in an arch shape in the palate direction; a storage device used for containing dressing is arranged at the preset position, corresponding to the palate wound, of the palate device, the side, close to the palate, of the storage device is of an opening structure, the dressing covers and is connected to the palate wound in a pressed mode in the wearing process, and dressing treatment can be conveniently conducted on the palate wound.

We offer a new type of all-around cleaning toothbrush that reduces blind spots during cleaning and improves cleaning effectiveness. [Solution] The new all-directional cleaning toothbrush is equipped with a toothbrush handle 1, a toothbrush body 2 is provided at the upper end of the toothbrush handle, and a toothbrush head 3 is fixed to the upper end of the toothbrush body. A silicone strip 5 is fixed to the side of the toothbrush head, and a silicone pad 4 is fixed to the back surface of the toothbrush head. The silicone strip is formed in a U shape. A rotating shaft 6 is fixed to the upper end of the toothbrush handle, an annular groove is formed inside the toothbrush handle, and a locking mechanism is provided inside the annular groove, and the locking mechanism includes a connecting ring. In this invention, the silicone strip can effectively clean the space between the buccal tooth surface and the buccal mucosa. The U-shaped silicone strip follows the arc shape of the dentition well, and can perform gentle and comprehensive cleaning of the tooth surface and gingival margin during brushing.

The utility model provides a shell-shaped appliance and an appliance set comprising the same, the shell-shaped appliance comprises an appliance body for accommodating teeth, the surface of the appliance body facing the tongue side and / or the cheek side is provided with a protruding part, and the protruding part is matched with an external appliance in shape and is used for being detachably connected with the external appliance; the protruding part comprises a gingival margin end and an extending tail end in the horizontal direction, a first connecting line is arranged between the gingival margin end and the extending tail end, and the included angle between the tangent line of the first connecting line and the horizontal direction is not larger than 80 degrees and not smaller than-20 degrees. According to the orthodontic appliance, the orthodontic appliance body can be conveniently and detachably connected with the external appliance through the convex part, so that when one of the orthodontic appliance body and the external appliance is damaged, the orthodontic appliance can be normally used only by replacing the damaged orthodontic appliance body or the damaged external appliance, and the use cost is reduced. In addition, by adopting the structural form, the connection between the external instrument and the appliance body is facilitated, and the external instrument is prevented from being separated from the appliance body.

The invention relates to the technical field of oral rehabilitation, in particular to an abutment crown integrated manufacturing method which comprises the following steps: acquiring intraoral scanning data and cone beam CT data, performing registration to obtain a unified patient coordinate system, and calculating a target soft tissue curved surface and a tolerance parameter set based on an alveolar ridge form, mucous membrane thickness and an implant attitude; solving an abutment main body, a crown body and a plastic neck section at the same time under the same coordinate system, dividing plastic neck section patches, and setting a propelling direction, an allowable propelling amount and a limiting groove for each patch; an integrated main body piece with a limiting groove and a plastic neck sleeve are machined, and propelling information is marked; after installation, the face sheet is shaped or retreated in a staged and directional upheaval mode according to marks, so that the gingival margin and the gingival papilla are gradually shaped, a neck margin closed contact band is established, and controllable individualized soft tissue shaping is achieved.

The present invention relates to a method and device for designing a dental restoration, the method comprising: processing image data related an oral cavity of a surgery subject; determining a gingival margin line of a plurality of teeth of the surgery subject on the basis of the image data; determining a dental axis of the plurality of teeth; measuring a Hausdorff distance between at least one first tooth and at least one second tooth, symmetric to the first tooth, among the plurality of teeth; and determining a degree of coincidence in the three-dimensional shape of the first tooth and the second tooth on the basis of the Hausdorff distance. Other embodiments are also possible.

A mouthpiece (1) for dispensing a liquid in a user's mouth, the mouthpiece (1) comprising an inlet (6) for a tube (2) and an internal channel (5) having at least two outlets (7), wherein the mouthpiece (1) is configured to be positioned within the upper vestibule (10) of a user's mouth, on top of the gingival margin (11), wherein the thickness of the mouthpiece (1) is less than 1 mm.

This invention discloses a dental arch appliance, a dental arch treatment system, a dental arch treatment method, and a method for generating the dental arch appliance. The appliance includes a shell-shaped body for fitting onto the crowns of teeth along the dentition direction. The appliance also includes an extension portion connected to the lingual edge of the shell-shaped body in the tooth height direction and extending away from the cusp beyond the lingual gingival margin; and in the dentition direction, the extension portion is arranged around the lingual edge. By changing the shape of the appliance to enhance its rigidity, specifically by providing an extension portion on the lingual edge of at least one tooth, the cutting line of the shell-shaped body at the lingual edge can be lengthened, increasing the moment of inertia of the appliance in the occlusal projection direction, thereby improving the rigidity of the appliance in the direction of force application to the dental arch.

The invention discloses a registration method for a tooth and oral cavity endoscope two-dimensional image and a CBCT (cone beam computed tomography) three-dimensional model image, relates to the technical field of image registration, and aims at the tooth and oral cavity endoscope two-dimensional image and the CBCT three-dimensional model image. Image registration is carried out by using real tooth edge contour points in the oral cavity endoscope two-dimensional image and three-dimensional model projection contour points as registration feature points; according to the technical key points, an oral cavity internal three-dimensional model is obtained through oral cavity optical scanning, and tooth gingival margin line feature information is extracted; a YOLOv5s target detection algorithm and a Canny edge detection algorithm are combined to carry out target tooth identification and segmentation and edge contour extraction on a first frame image input by an oral cavity endoscope, so that the image registration efficiency is improved; contour point set registration is carried out in a one-to-many mode through a coherent point drift algorithm, and the rotation angle around each coordinate axis and a registration transformation matrix which should be applied when registration of the three-dimensional model is achieved are rapidly obtained; according to the method, the three-dimensional model is subjected to dimensionality reduction projection, so that the dimensionality of the image to be registered is unified, the real tooth edge contour points in the two-dimensional image of the oral cavity endoscope and the projection contour points of the three-dimensional model are taken as the registration feature points, and the efficiency and accuracy of image registration can be improved.

The utility model belongs to orthodontic technical field, concretely is a kind of invisible appliance with palatal arch expansion device, including appliance body, appliance body is equipped with several cavity of accommodating tooth, still include palatal arch expansion device, palatal arch expansion device is set between the lingual gingival margin of canine to posterior tooth area of appliance body left and right sides, palatal arch expansion device is integrally formed with appliance body and is attached maxillary palatal part, palatal arch expansion device completely covers entire palatal part. Reinforcing rib is equipped on palatal arch expansion device, reinforcing rib is integrally formed with palatal arch expansion device, reinforcing rib is protruding to the direction of occlusal dentition. The appliance of the utility model can be all-round attached and wrapped palatal part, the design of palatal reinforcing rib can effectively increase palatal support strength, compared with the appliance of general structure, the strength of the structure of the utility model is higher, and the structure is stronger. Increase palatal mucosa coverage, increase the area of appliance, enhance the force effect, can effectively improve the efficiency of correction.