41 results about "Zygomatic bone" patented technology

The invention discloses an artificial intelligence-assisted standard artificial temporomandibular joint automatic placement method. The method comprises the following steps: training a three-dimensional reconstruction model used for extracting a mandible and zygomatic bone zygomatic arch joint prosthesis placement area; based on an improved 3D U-Net neural network, carrying out segmentation extraction on the interested areas of the glenoid fossa and the mandibular branch, and obtaining a space geometric structure for prosthesis installation; the method comprises the following steps: extracting outer bone surface point cloud data of a zygomatic arch and a mandibular ramus on the basis of a space geometric structure of prosthesis installation, identifying anatomical key points, and generating a standard prosthesis fitting surface through geometric fitting and constrained optimization; determining the relative position relation between the maxillary joint fossa prosthesis and the mandibular branch prosthesis, and determining the installation direction, the hole position definition and the assembly reference point; and determining a contact area, a posture direction and a placement position of the prosthesis, and completing three-dimensional positioning and posture matching of the prosthesis in the patient model as a surgical planning scheme.

The invention discloses a cheekbone and zygomatic arch fracture reduction guide plate, and relates to the technical field of cheekbone and zygomatic arch reduction, the cheekbone and zygomatic arch fracture reduction guide plate comprises a guide plate body and a fixing structure, the guide plate body is provided with an attaching inner surface matched with the anatomical form of an affected side cheekbone and zygomatic arch bone surface in a target reduction form; the fixing structure is arranged on the guide plate body and used for fixing the guide plate body to the healthy bone surface around the zygomatic arch of the diseased side cheekbone, the problems that in the prior art, operation trauma is large, accuracy is low, the reduction effect is not ideal and the like are solved, and the zygomatic arch fracture reduction fixing operation is completed accurately, safely and efficiently.

The utility model relates to the technical field of life cultivation and health preservation tools, in particular to a multifunctional head and face tendon shifting and scraping therapy device. Comprising a holding rod, one end of the holding rod is provided with a spherical first massage part, the other end of the holding rod is provided with a scraping therapy plate, and the side edge, away from the holding rod, of the scraping therapy plate is an arc-shaped scraping therapy part; the two ends of the scraping therapy part are fillets and serve as second massage parts respectively. According to the multifunctional head and face tendon poking and scraping therapy device, the spherical first massage part is arranged to conduct tendon poking and acupoint hitting, key acupoints and main and collateral channels are beaten, poked, pressed and kneaded, and the arc-shaped scraping therapy part is arranged to conduct scraping therapy on the forehead, the upper edge and the lower edge of eye sockets, the lower jaw, the cheekbones in front of ears and behind ears, the neck and other positions. Compared with a traditional fan-shaped scraping therapy plate, the scraping therapy plate can be attached to multiple positions such as the face and the neck of a person more easily, use is more convenient, the second massage parts at the two ends of the scraping therapy part can be used for acupoint pressing, pushing and pressing and the like, multiple functions are achieved, scraping therapy, acupoint pressing, tendon poking, pushing and pressing and other operation can be conducted, and practicability is higher.

The invention relates to a calibration device for ophthalmology imaging equipment, and relates to the field of ophthalmology imaging related technologies, and the calibration device comprises an imager, a head bracket, a movable support frame, a jaw support, a forehead support, a linkage mechanism and a calibration mechanism. When a patient needs to finely adjust the head angle due to discomfort, the jaw support cannot rotate along with the patient, local pressure concentration is easily caused, friction burning pain is generated, and the adaptability of the patient is affected; secondly, symmetrical straight line clamping or simple cushion block supporting is mostly adopted for lateral positioning, adaptability to face contour changes of cheekbones, jaw bones and the like is lacked, and positioning deviation or oppression discomfort is easily caused; and thirdly, the problems that the existing device lacks a multi-direction linkage automatic calibration mechanism, manual intervention is needed for multiple times in operation, the calibration precision and efficiency are low, and the alignment requirement of high-precision ophthalmology imaging is difficult to meet are solved.

The utility model discloses a zygomatic bone implant positioning bow, and belongs to the technical field of zygomatic implantation. The utility model relates to a cheekbone implant positioning bow which comprises a main bow frame, a guide sleeve and an adjusting piece. One end of the main bow frame is provided with a lower port, the lower port is provided with a guide sleeve, an adjusting piece is arranged outside the guide sleeve, the guide sleeve is provided with a through first hole body, the adjusting piece can move relative to the first hole body, and the middle of the adjusting piece is provided with a second through hole which is coaxial with the adjusting piece and penetrates through the two ends of the adjusting piece. Due to the structural design of the zygomatic implant positioning bow, especially the combination of the main bow frame and the adjusting piece channel, the precise positioning and implanting process of the zygomatic bone implant is optimized. Through rigidity and adjustable design of the bow frame, the positioning bow can adapt to anatomical structures of different patients, safety and accuracy of an operation are improved, and positioning errors in the operation are reduced.

The utility model discloses a glasses structure of cheekbone support relates to glasses technical field, the glasses structure of cheekbone support includes frame subassembly and temple subassembly, temple subassembly includes two temple, each temple includes connecting piece, strutting piece and ear hook piece, connecting piece extension direction both ends are connected with strutting piece and frame subassembly one end respectively, connecting piece extension direction both ends are connected with the ear hook piece, connecting piece extension direction both ends are connected with frame subassembly one end respectively, connecting piece extension direction both ends are connected with frame subassembly one end respectively, connecting piece extension direction both ends are connected with frame subassembly one end respectively. The ear hook piece is connected to the end, away from the connecting piece, of the supporting piece, the ear hook piece is used for wearing the glasses structure for supporting the cheekbone on the ear, a supporting face is formed on the side, facing the head, of the supporting piece, and the supporting face is used for abutting against the cheekbone part; according to the scheme, the glasses can be stably worn on the ears through the arrangement of the ear hook pieces and the supporting pieces, and the pressure of the ears can be relieved through additional supporting force provided by the contact between the supporting surfaces and the cheekbones; the cheekbone part and the ear part support the weight of the glasses, so that the compression of the conventional glasses with nose pads on the nose bridge is avoided, the discomfort caused by overlarge local stress is reduced, and the wearing experience of a user is improved.

1. The name of the design product: traction hook (zygomatic implant). 2. The use of the design product: used for soft tissue flap traction and retention when zygomatic bone implant and maxillary sinus outer lifting, protecting soft tissue and preventing soft tissue slipping. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The present invention relates to a dental implant set, more precisely to a zygomatic dental implant set for in-bone dental implant surgeries of the zygomatic arch via intraoral access. The zygomatic dental implant set (100) comprises an implant pin (10) configured to be anchored in the zygomatic bone; an intermediate connecting member (20) comprising a curved shape; wherein a first end (21) of the intermediate connecting member (20) is configured to be coupled directly or indirectly to the implant pin (10); a first extender (30), wherein the first extender (30) is coupled to a second end (22) of the intermediate connecting member (20); a prosthetic abutment (40), wherein a first end (41) of the prosthetic abutment (40) comprises an outer thread (42), wherein the outer thread (42) of the prosthetic abutment (40) is coupled to a first inner thread (23) of the intermediate connecting member (20); and wherein a second end (43) of the prosthetic abutment (40) is configured to receive a dental prosthesis.

The utility model discloses a lateral fixed implant, which relates to the technical field of implants and comprises an implant main body, a fixed cavity is arranged at the top of the implant main body, a fixed needle is arranged in the fixed cavity, and the fixed cavity comprises a cone, an anti-rotation structure, a threaded hole, a first hole, a second hole and a third hole which are sequentially communicated with one another from top to bottom. A first thread is arranged on the outer surface of the implant main body, a fourth hole is formed in the outer surface wall, located on the first thread, of the implant main body, the fourth hole is communicated with the third hole, and the fixing needle comprises a cap head, a rod part, an anti-withdrawing thorn and a tip which are fixedly arranged in sequence from top to bottom. Through double fixation of the lateral fixing needle, the stability of the implant is effectively enhanced, the defects of insufficient retention of the implant and complicated methods such as wing plate and cheekbone implantation are overcome, and the lateral fixing implant can be applied to the situation of insufficient bone mass of maxillary alveolar bones.

The invention relates to the technical field of medical instruments, in particular to a bone holder for cheekbone fracture reduction and a robot-assisted cheekbone fracture reduction method. The bone holder for reduction of the fracture of the cheekbone provided by the invention comprises a fixed end which is provided with at least one fixing hole and is used for being rigidly connected with a bone block through a fixing piece; one end of the connecting rod is fixedly connected with the fixed end, and the other end of the connecting rod is provided with a connecting structure used for being detachably connected with the tail end of the mechanical arm; and the plurality of registration points are distributed on the surfaces of the fixed end and the connecting rod and are used for performing intraoperative registration through a registration tool. According to the bone holder, the application scene is widened, a stable and reliable connection mode is provided, and the foundation of high-precision registration is laid.

The utility model belongs to the technical field of spectacles, and particularly relates to a spectacle frame without nose pads. Comprising glasses legs and a lens frame, the front ends of the glasses legs are rotationally connected to the two ends of the lens frame respectively, the bending assembly comprises a bending body arranged at the rear ends of the glasses legs and a soft cushion layer arranged on the inner side of the bending body, and the bending body is arranged on the outline of an outer ear in a surrounding mode; the supporting assembly comprises a first supporting piece and a second supporting piece, one end of the first supporting piece is connected with the glasses leg, the other end of the first supporting piece is attached to the cheekbone, one end of the second supporting piece is connected with the glasses leg, and the other end of the second supporting piece is attached to the upper skin of the external ear; the first sliding assembly is arranged between the first supporting piece and the glasses leg; the second sliding component is arranged between the second supporting piece and the glasses leg; the first supporting piece is designed to be of a double-layer composite structure. The utility model aims to provide a nose-pad-free spectacle frame which is more stable, more comfortable and high in adaptability.

An implant (X) for supporting an upper-jaw dental prosthesis (Z) on the cranial bone (S), wherein the implant (X) has a receiving portion (ZA) for receiving the upper-jaw dental prosthesis (Z), and also a plurality of fastening portions (B1, B2, B3, B4), wherein the fastening portions (B1, B2, B3, B4) are connected to the receiving portion (ZA) and have at least one through-hole (DL) for receiving a fastening screw (BT), wherein the fastening portions (B1, B2, B3, B4) are formed at least by a first fastening portion (B1), a second fastening portion (B2) and a third fastening portion (B3), wherein the first fastening portion (B1) is designed to anchor the implant (X) on the lateral cranial base (S1), and wherein the second and third fastening portions (B2, B3) are designed to anchor the implant (X) on one of the following three cranial bone portions (S2, S3, S4): the pterygoid process (S2), the zygomatic bone (S3), and the maxilla (S4).

The invention relates to a sanitary mask for protecting a human body, which comprises a rope body binding piece for being fixed on the head of a user, a jaw fixing piece, an angle adjusting piece and a mask piece, and is characterized in that the jaw fixing piece is connected to the rope body binding piece and is fixed at the jaw position of the user so as to be matched with the rope body binding piece to form a supporting structure; the angle adjusting piece is connected to the jaw fixing piece; and the mask piece is connected to the angle adjusting piece. The technical scheme has the advantages that the angle adjusting part is connected to the jaw fixing part, the mask part is connected to the angle adjusting part, and the angle adjusting part drives the mask part to adjust the angle. The cheekbone part can be better attached to the cheekbone part; for people with round faces, the angle can be properly adjusted downwards, it is ensured that the mask is tightly attached to the faces, and the adaptability of the mask to different face shapes is improved. The problem that in the prior art, the mask angle cannot be adjusted according to the use scene, and consequently attaching is not tight is solved.

The utility model discloses a nasal oxygen cannula which comprises a nasal plug which comprises a cannula section extending into a nasal cavity, a middle section located at one end of the cannula section and wing sections arranged at the two ends of the middle section respectively. The base is detachably connected to the bottom of the middle section; the protecting band is detachably connected to the end part of the wing section, and the protecting band is provided with a cheekbone groove for accommodating the cheekbone bulge; the head band is fixed at the end part of the protective band; the utility model discloses a dressing plaster. In the scheme, after the tube section extends into the nasal cavity, the middle section is of a narrow-end-up structure, so that the middle section is in a tilting posture, the contact area with the skin is reduced, the end part is thicker, and the middle part is thinner, so that the covering area on the skin can be reduced on the premise of ensuring the structural strength; the arrangement of the wing sections can conform to the binding path of the head band so as to reduce the pressure applied to the facial skin, the cheekbone grooves in the protective band can reduce the pressure borne by the skin at the cheekbone position, the shielded end of the head band can reduce the friction of the head band to the skin, and the possibility of skin damage is reduced.

This invention provides a disposable, simple endotracheal intubation fixator for use in the field of endotracheal intubation. It includes a fixation tube with an adjusting sleeve and a threaded bolt connected to its inner wall. A knob drives the threaded bolt to press and adjust the adjusting sleeve, thereby fixing and locking the intubation tube to prevent slippage, displacement, and dislodgement. It employs a biomimetic integrated dental arch design, consisting of upper and lower occlusal plates and an elastic arc strip, preventing occlusal force from directly acting on the intubation tube and dispersing the biting force. Buffer pads are provided on the occlusal plates for cushioning and protection. Suction cups are added to the cheekbone area on both sides of the patient, connected to the fixation tube via an arc-shaped fixation frame. The bony support of the cheekbone reduces stress on facial soft tissues. Non-woven fabric patches are placed on the skin-contacting surfaces of the suction cups to keep the skin dry and clean. Elastic bands are incorporated into the arc-shaped fixation frame for double fixation, making it compatible with the needs of different patient groups and clinical scenarios.

A patient interface can have features improving the comfort of use by reducing the perceived pressure of a nose-contacting cushion of the patient interface against the nose. The patient interface can have rigid headgear connection elements connectable to a frame of the respiratory interface. The rigid headgear connection elements can be shaped to reduce the force of the cushion against the nose. Headgear for a patient interface can also have features improving the stability of headgear of the head. The headgear can have a relatively rigid framework and a relatively pliable overlay covering the framework. The framework can have apertures defining a front portion to be positioned below or near the cheekbones, a rear portion to be positioned over the sides of the head around the ears, and a top portion to extend upward along the head towards the crown.

A cervical orthosis (10) designed to hold the head (3) of an individual at least in the sagittal plane (Exz), wherein the cervical orthosis (10) has a ventral part (11) and a dorsal part (12), which parts are adjustable to each other and can be connected or linked together at least in their predefinable relative positions and can each be supported on the individual; characterized in that the cervical orthosis (10) forms at least by means of the ventral part (11) a rigid receptacle (14) with at least one anatomical negative contour (14a) designed to interact with the zygomatic bone, which is rigid at least with respect to the transverse plane (Exy) such that the cervical orthosis (10) is designed to hold the head (3) of an individual at least also in the transverse plane (Exy).

The invention provides a butterfly wing process separation operation system, and relates to the technical field of medical instruments. Comprising an osteotome suitable for separating the wing process of the butterfly bone; the positioning system is suitable for positioning the displacement direction and position of the osteotome, the positioning system comprises a positioning piece, one side of the positioning piece is provided with a joint face matched with the anatomical form of the outer surface of the cheekbone, and the positioning piece is provided with a guide channel matched with the osteotome; the fixing structure is suitable for fixing the positioning piece; in addition, the bone chisel further comprises a limiting mechanism suitable for limiting the displacement distance of the bone chisel. Through the arrangement of the positioning piece, the joint face matched with the anatomical form of the outer surface of the zygomatic arch of the cheekbone, the guide channel and the limiting mechanism, the positioning piece can be stably attached to the surfaces of the zygomatic arch of the cheekbone of different patients, the osteotome is positioned by adapting to the skeleton features of the different patients, and the limiting mechanism can limit the displacement depth of the osteotome; and the osteotome is prevented from being inserted too deep to injure a patient when the wing process of the butterfly bone is broken.

A method and apparatus for performing a photometric cephalometric analysis are provided. An image of a face of a patient in a frontal plane is generated such that his / her head is along the Frankfurt horizontal plane. A facial proportionality angle (FPA) is calculated based on the image, with the FPA being formed by two rays going from a vertex located at a gnathion point to zygomatic points on both face sides. The gnathion point is a point of maximum projection of a soft-tissue part of the patient's chin in a sagittal plane. The zygomatic points aligned with each other in a transverse plane are on a skin surface above the most protruding points of zygomatic bones. The FPA is used to determine a relationship between a visual interzygomatic distance (distance between the zygomatic points) and a visual morphological face height (distance between the gnathion point and a soft-tissue nasion point).

The utility model discloses a reduction instrument for zygomatic bone and zygomatic arch fracture. The reduction instrument comprises a working part, a handle, an endoscope channel, an aspirator channel and two arc-shaped detachers, the working part is of a U-shaped flat structure, the two arc-shaped detachers are symmetrically arranged relative to the working part, the two arc-shaped detachers are both connected to one end of the working part, and the other end of the working part is connected with a handle; the arc-shaped detacher is of an arc-shaped structure and is configured to peel the deep-surface periosteum and tendon attachment of the zygomatic bone and the zygomatic arch; endoscope channels are connected to the two sides of the working part. And aspirator channels are connected to two sides of the working part. The problems that an existing zygomatic bone and zygomatic arch fracture operation lacks effective force application and reduction means, so that the operation time is long, and the reduction effect is not ideal are solved, efficient stripping, precise reduction and visual verification of the fracture broken end are achieved, and the operation efficiency and the success rate are improved.

A patient interface including a headgear and a frame assembly is provided. The headgear is for maintaining the patient interface on a head of a patient. The frame assembly is for connecting to the headgear, and includes a main frame, and two side extension arms respectively extending from two sides of the main frame. When no force is applied to the side extension arm, an upper edge of a cheek contact section of the extension arm is closer to a mask central axis of the patient interface than a lower edge, so that the upper edge of the cheek contact section is away from an apex of a cheekbone of the patient when the patient interface is worn. The patient interface of the present invention better complies to a face by using the two side extension arms that conform to a profile of positions of upper halves of cheekbones of the face, and provides effects of good support and stability as well as dispersed weight and pressure.

The application belongs to the technical field of medical devices, and provides a head and face correction device, which comprises a skull corrector and a face correction belt. The skull corrector comprises a skull placing piece, a skull correction assembly and a fixing column. The face correction belt comprises a face mask piece, a tension assembly, a head cover and a neck cover, the tension assembly is connected with the head cover and the neck cover respectively, and the face mask piece is detachably connected with the head. The skull corrector and the face correction belt can correct the head and the face of a user respectively, and can be used together or separately. The whole structure is reasonable in design, can be used separately or together, low in production cost, convenient to use, and convenient to popularize and use. The application can correct facial asymmetry, improve the height of a nose bridge, push a cheekbone inward and correct a skull through a physical correction method.

This invention discloses a point cloud completion method and system for the medical field, relating to the field of 3D medical image processing technology. In this invention, the encoder dynamically constructs local neighborhoods and extracts multi-scale geometric features through three-level graph-edge convolution and farthest-point downsampling. These features are then combined with multi-scale stitching and global pooling to accurately capture local anatomical details such as high curvature and complex topology in medical point clouds, avoiding the loss of local features by general encoders. The decoder employs a four-stage point cloud deconvolution module, progressively upsampling through a combination of point splitting, displacement prediction, and feature interaction. Combined with self-attention or Mamba architecture for modeling long-range dependencies, this ensures that the point cloud density gradually increases while maintaining structural continuity. This invention enables the network to learn both global anatomical morphology and focus on local fine structures, resulting in a completed point cloud that is not only structurally rich and free of holes and distortions, but also strictly conforms to medical anatomical constraints such as the skull and cheekbone.

The utility model relates to the technical field of oral and maxillofacial surgical medical instruments, and particularly discloses a maxillary bone total resection bone reconstruction operation synchronous implantation navigation implantation structure which comprises an implantation support, a navigation positioning hole, a navigation positioning hole, a navigation positioning hole, a navigation positioning hole and a navigation positioning hole. The guiding stent is matched with the implanting stent, and a tissue supporting space is formed between the guiding stent and the implanting stent; and the positioning target nail is matched with the navigation positioning hole and is used for providing a positioning base point. According to the scheme, the neck position of the positioning target nail is selected on three-dimensional modeling to serve as a mark point, the position relation during navigation is established through a space registration algorithm, planting site deviation caused by fibula implant fixing deviation is reduced, and drill point reaming and stent implantation are guided in real time under high precision in the maxilla total resection bone reconstruction operation; the 3D printed PEEK material implantation stent is adopted to replace the cut maxillary bone and part of the cheekbone, and the guide stent is used for providing support for fixation of the fibula implant, so that not only is the stability of the reconstruction structure ensured, but also the surgical operation and the postoperative recovery strategy are optimized.

1. The name of the design product: Absorbable bone plate. 2. The use of the design product: Used for the connection and fixation of the fracture of craniofacial and other non-weight-bearing parts of the body (such as maxilla, orbital bone, nasal bone, zygomatic bone, zygomatic arch) and other parts. 3. The design points of the design product: The combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view.

The utility model discloses a zygomatic bone and zygomatic arch fracture reduction device which comprises a connecting piece. The reduction piece is detachably connected with the connecting piece, and the reduction piece is used for shifting the cheekbone; the handle is connected to the end, away from the reset piece, of the connecting piece, and the handle is used for controlling the connecting piece and the reset piece to move. According to the cheekbone and zygomatic arch fracture reduction device, the connecting piece is detachably connected with the reduction piece, when the cheekbone or zygomatic arch fracture is opened, the corresponding reduction rod or reduction hook can be installed on the connecting piece, a displacement fracture section is hooked, pulled and pulled, the displacement fracture section can be moved in all directions in a three-dimensional space, and therefore anatomical reduction is achieved; and the handle is used for holding, so that the resetting force can be controlled.

The utility model relates to an operation face supporting device which comprises a supporting mechanism, the supporting mechanism comprises two opposite vertical plates and a connecting base arranged between the two vertical plates in a connected mode, and an inserting piece assembly is arranged between the two vertical plates; the forehead pad is arranged on the insertion piece assembly in a sliding mode, and one side of the forehead pad is detachably connected with the connecting base through a first rope buckle assembly; the movable pad mechanism comprises two symmetrical movable pad assemblies, each movable pad assembly comprises a sliding seat arranged on the vertical plate in a sliding mode and a cheekbone pad installed on the sliding seat in a sliding mode, and one side of each cheekbone pad is detachably connected with the sliding seat through a second rope buckle assembly; the two cheekbone pads are used for supporting cheekbones of a patient, and the space between the two cheekbone pads is used for avoiding the mouth and nose of the patient. According to the operation face supporting device, the distance between the cheekbone supporting mechanisms can be flexibly adjusted according to the face shape of a patient so as to be matched with the face shape of the patient, and a soft cushion part is easy to detach and replace after an operation.

The invention provides a cosmetic surgery injection training face model, which relates to the field of injection training models, and is characterized in that the cosmetic surgery injection training face model comprises a skull and a simulated skin, the front area of the skull is provided with an injection point area mark, the positions of the forebone, the temporal bone and the masseter of the skull are fascia upper layer injection points, and the simulated skin is provided with an injection point area mark. The positions of the frontal bone, the temporal bone, the cheekbone and the mandible are bone surface injection points, the two sides of the nose bridge of the skull are vacuum injection points, the simulated skin tightly covers the outer side of the skull in a sleeving manner, the simulated skin comprises a skin layer, a superficial muscular fascia and a deep fascia, the skin layer is located on the side away from the skull, and the skin layer is located on the side away from the skin layer. The deep fascia is arranged between the superficial muscular fascia and the deep fascia, superficial fat is arranged between the deep fascia and the superficial muscular fascia, and a periosteum upper layer is arranged between the superficial muscular fascia and the deep fascia, is made of a silica gel material and is used for supporting the whole appearance. The device has the advantages that different injection states can be fully simulated, corresponding information is fed back to trainees, the overall training quality is fully improved, and the device is convenient to use.

The present invention discloses an instrument for zygomatic bone reduction surgery, comprising a reduction rod, a handle, and a support structure; the support structure is connected to the first end of the reduction rod; the first end of the reduction rod is connected to the first end of the handle; the reduction rod and the handle form an angle whose opening direction is opposite to the direction of the support structure; the second end of the reduction rod is slender; and the second end of the handle includes a hand-held portion. The present invention utilizes the principle of a lever to construct a fulcrum, which amplifies the force applied by the doctor to the handle and transmits it to the zygomatic bone fracture fragment, so as to facilitate the conduction of force and make it easier to pull out or pry out the fracture fragment. In addition, the present invention constructs the fulcrum of the instrument outside the body to avoid causing harm to the patient's body when applying force.

A zygomatic dental implant having an elongate body comprising: an elongate apical portion for anchoring the implant in zygoma bone of a patient, the apical portion having a central longitudinal axis; a coronal portion having an internally threaded bore via which an abutment can be engaged with the implant; and an intermediate portion extending between the apical portion and the coronal portion, wherein a cross-sectional shape of the intermediate portion and / or the coronal portion, taken along a plane perpendicular to the central longitudinal axis, is ovoid.