164 results about "Maxillary Bones" patented technology

The present invention provides an improved orthopedic system for the modification of the distance between the maxilla and zygoma. In a preferred embodiment, the system includes first and second footplates attached to an orthopedic device. The second footplate is attached to the zygoma, with the first footplate being mechanically coupled to the maxilla. This mechanical coupling is achieved either through attachment directly to the maxilla or by attachment to a construct wired to the patient's teeth. The orthopedic device, which may be a distractor, allows for modification of the distance between the maxilla and zygoma. The entire system can advantageously be placed intra-orally within a patient. In a preferred embodiment, the device does not increase in length upon activation. In another preferred embodiment, the second footplate is offset, allowing the actuator to be placed under the zygoma. Methods for using this novel orthopedic system are also disclosed.

The present invention provides methods for moving a tooth to a desired position within a patient's mouth using orthodontics including perforating tissue in the oral cavity sufficient to induce an inflammatory response. The perforations may be made in any area of the maxilla or mandible, and any number of perforations may be made that are preferably 0.5 to 1.5 mm diameter, and preferably 1 to 3 mm deep. The invention also provides a device that may be used in conjunction with slow-speed rotary instruments or with manual drivers for providing the perforations. The device has a drill that makes the perforations and a stop that prevents the drill from penetrating the jaw bone beyond a predetermined depth. The invention also provides a kit that supplies the professional with the necessary components in a sealed container to carry out the osteoperforations. The kit may include hand held and rotatory perforating devices, anesthetic, and a soft tissue punch.

A bone distractor having four bone plate attachment members for affixation to the posterior and anterior maxilla and/or zygomatic buttress and to the posterior and anterior mandible, the attachment members mounted onto a pair of parallel rods, one rod being a threaded drive rod and the other being a releasable guide rod, whereby rotation of the drive rod causes dimensional separation of the anterior attachment members from the posterior attachment members. The guide rod can be quickly removed such the superior attachment members joined to the maxilla and/or zygomatic buttress are physically separated from the inferior attachment members joined to the mandible such that the jaw can be opened.

A cover screw for a dental implant seals a threaded hole of an implant fixture formed in a mandible or maxilla. The cover screw is formed of a main body and a membrane fixing screw, and is attached to the implant fixture until the implant fixture is thoroughly connected to the mandible or maxilla in an implantation hole. The main body includes a first male screw to be screwed into the threaded hole of the implant fixture, an outer face formed on a side opposite to the male screw and facing an oral cavity, and a threaded hole formed on a side of the outer face. The threaded hole has a diameter smaller than that of the male screw and extends parallel to the male screw. The membrane fixing screw has a head, and a second male screw to be screwed in the threaded hole. A barrier membrane is properly held between the main body and the head.

A mandibular advancer assembly comprising an advancer (e.g., a spring advancer, such as a Herbst appliance) having an upper end and a lower end, and a lower implant secured to the lower end of the advancer and adapted to be secured to the mandible of the patient. Preferably, the lower implant comprises a bone-engaging member (e.g., a bone screw) and a securing member for coupling the lower end of the advancer to the bone-engaging member. For example, the bone-engaging member can include a threaded orifice, and the securing member can include a threaded element engaged with the threaded orifice. If desired, the advancer assembly can further include an upper implant secured to the upper end of the advancer and adapted to be secured to the maxilla of the patient.

An intraoral dental device includes an insert for protecting the teeth, dental arches, mandible, maxilla, temporal mangila joint and lips of the wearer from impact that may arise in athletic activities. The insert is an open cell structure which may optionally contain a fluid material, such as hydrogels, amorphous solids, semisolids, liquids and/or gases. The insert may be permanently or resiliently deformable whereby a portion of the fluid material, if present, is expelled from the insert's cells. The inserts are replaceable after they are rendered ineffective from the sustained impact.

A dental prosthetic includes an elongate threaded implant adapted to be secured within the trabecular region of a maxilla or mandible. An abutment having a first region adapted to receive a crown and a second region adapted for coupling to the elongate threaded implant is secured to the elongate threaded implant. The abutment and elongate threaded implant extend generally along a common longitudinal axis. A compliant brace is adapted for placement between the first region of the abutment and the elongate threaded implant. The compliant brace includes first, second, and third elongate extensions capable of engaging the cortical region of the maxilla or mandible, thereby minimizing micromotion and allowing for osseointegration despite immediate installation of a crown and immediate mechanical loading. The dental prosthetic may also include an adaptor for coupling the elongate threaded implant and the abutment. Methods for implanting dental prosthetics are also described.

There is provided an implant drill for maxillary sinus lifting, which is capable of easily and simply boring the maxillary bone, without damaging the lining membrane of the maxillary sinus, to easily operate the maxillary sinus lifting and to expand a boring part of the maxillary born for implant placement. The implant drill for maxillary sinus lifting, which includes a central shaft with a shank in a body to be mounted onto a general dental hand piece, comprises a protrusion member elastically positioned in the body so as to move forward and backward or a lifting member being free from the rotation of the body.

A dental articulator (5) capable of reproducing or analyzing a physiological occlusion status by implementing a pressure receiving function and a traction function capable of operating in all the motion directions equivalently provided by a jaw joint function of a living body with a teeth plaster model fitted between upper and lower jaw frames, comprising an occlusal plane table (8) having the same anteversion angle as the occlusal plane oblique angle of a living body; a bite analysis plate (9) on which average positions of a spew center (91) and a posterior motion axis (92) are set at a plurality of positions and they are sketched in pairs with the average positions of the spew center on one side and those of the posterior motion axis on the other side of the plate; an incisal guidance plate (56) in which an inverted conical slope for mapping front-and-rear, right-and-left inclinations of the cusp is cut to allow the tip of an incisal guide to slide; and a transform plate (1) which is fitted using a lower jaw frame (52) as a base, wherein the teeth plaster model (7) of a lower jaw is mounted on and fitted to the transform plate (1) to effect a shift operation, thereby reproducing physiological occlusion status in conjunction with an intercuspal position and a posterior occlusion position of a living body.

A jaw advancer connects to the skull, maxilla jaw, and the jawbone, mandibular jaw, without contacting the teeth of a patient. Each advancer, of a pair, has a hollow upper member with a head to admit a screw into the maxilla and an opposite threaded end, a socket having a threaded end that admits the upper member and an opposite smooth bore, and a lower member with a head to admit a screw into the mandible and an opposite smooth end that fits into the smooth bore. The lower member has a coaxial spring that provides an expansive force to the lower jaw and that cushions the socket. The lower member slides within the hollow portion of the upper member when the patient moves the advancer. The head of the upper member attaches proximate the molars of the maxilla to advance the mandible and attaches proximate to the incisors of the maxilla to retract the mandible. Alternatively, the lower member has a slight curve to separate it from the teeth.

Disclosed therein is a reamer for operating implant, which can very usefully apply an implant operation to a patient who is short of bone quantity to the maxillary sinus, which is easier and safer than a conventional hammering method using a drill and an osteotome or a conventional operation method for transplanting a bone or planting an implant after forming a bone window on a maxillary sinus side wall, and which can reduce a treatment time period and treatment costs by minimizing the patient's pain occurring before and after the operation of the implant. A cutting part of the reamer includes: a protruding face formed on the top surface thereof in such a manner as to upwardly upheave a partial surface including an outer circumference of the cutting part of the entire top surface of the cutting part to form a stepped jaw; a depressed face formed on the top surface thereof in such a manner as to depress a partial surface of the entire top surface of the cutting part to be opposite to the protruding face according to the formation of the protruding face, the depressed face having a reverse inclination in a clockwise direction; a cut edge horizontally formed on a connected portion between the stepped jaw and the protruding face so that the cut edge evenly disperses a force while being in horizontal line contact with the mucosa even though the cut edge is in contact with the mucosa of the maxillary sinus so as to allow a dentist to perform a cutting work safely without damaging a mucosa of a maxillary sinus; and a discharge path longitudinally formed on the cutting part in such a manner as to cut an area ranging from a partial surface of the top surface of the cutting part, i.e., a predetermined portion between the protruding face and the depressed face to a portion which is slightly shorter than the lower end of the cutting part.

A bur for maxillary sinus augmentation is disclosed. The bur uses a drill for rapid and easy perforation and expansion of maxilla as a preliminary surgery such that easy and convenient placement of dental implants is carried out without injuring subantral membrane. The bur includes a head, a body, a tool mount, and a perforation bur for a crestal approach technique including a head having a round top coated with irregular coarse diamond particles.

A digitized template used for orthognathic surgery comprises an occlusal splint, a maxilla left positioning plate, a maxilla right positioning plate, a maxilla left side connecting piece and a maxilla right side connecting piece; or comprises an occlusal splint, a chin left positioning plate, a chin right positioning plate, a strip body of which the two ends are respectively connected with the chin left positioning plate and the chin right positioning plate, a chin left side connecting piece and a chin right side connecting piece; or comprises an occlusal splint, a maxilla left positioning plate, a maxilla right positioning plate, a maxilla left side connecting piece, a maxilla right side connecting piece, a chin left positioning plate, a chin right positioning plate, a strip body of which the two ends are respectively connected with the chin left positioning plate and the chin right positioning plate, a chin left side connecting piece and a chin right side connecting piece, wherein the occlusal splint comprises a main plate, a left wing plate connected with the left front side of the main plate, and a right wing plate connected with the right front side of the main plate; all the components are designed through software, and manufactured by adopting a rapid forming method.

One aspect of the invention concerns a molar implant (24). The implant has a body with a coronal end (26) into which a threaded bore (60) extends to receive a fastener for a prosthesis. There is an externally threaded shank (34) extending apically from the outer end, at least a portion of the shank being inwardly tapered. The coronal end has a diameter of at least 7 mm and the shank has a taper angle in the range 10° to 25°. Another aspect of the invention concerns a surgical method in which a molar tooth (12) is extracted from a maxilla or mandible and a hole (22) is formed in the bone (10) of the maxilla or mandible at a generally central position relative to the sockets (16) left by the extracted molar tooth. This hole typically has a diameter greater than the lateral dimensions of the sockets. It is then possible to screw into the hole an implant (24) as described above.

Disclosed is a computer-implemented method of using a dynamic virtual articulator for simulating occlusion of teeth, when performing computer-aided designing of one or more dental restorations for a patient, where the method includes the steps of: providing the virtual articulator including a virtual three-dimensional model of the upper jaw and a virtual three-dimensional model of the lower jaw resembling the upper jaw and lower jaw, respectively, of the patient's mouth; providing movement of the virtual upper jaw and the virtual lower jaw relative to each other for simulating dynamic occlusion, whereby collisions between teeth in the virtual upper and virtual lower jaw occur; wherein the method further includes: providing that the teeth in the virtual upper jaw and virtual lower jaw are blocked from penetrating each other's virtual surfaces in the collisions.

An multipurpose mouthpiece assembly is disclosed for use in diagnosing and treating a variety of termporomandibular disorders. The assembly can include both a maxillary appliance and a mandibular appliance that are optionally configurable to function as a discluder, for diagnosing and treating wearers suffering from bruxism, tension headaches, and common migraine headaches, by preventing contact between opposing canine and posterior teeth and thereby reducing the intensity of clenching of the wearer's temporalis muscles. Alternatively, the two appliances are optionally configurable for use as a mandibular advancement device, for diagnosing and treating wearers suffering from obstructive sleep apnea by preventing excessive retrusion of the wearer's mandible. Alternatively, either the maxillary appliance or the mandibular appliance can be used individually to protect the teeth from nocturnal asymptomatic teeth grinding. In all cases, the appliance(s) can be readily adjusted to accommodate wearers whose maxillary and mandibular arches have a variety of sizes and shapes.

A method and apparatus are disclosed for the 3-dimensional analysis of movement of tooth surfaces of the maxilla (MX) in relation to the mandible (MN), comprising a measurement system for determining the movement of two solid bodies in all degrees of freedom by means of electronic measurement sensors. A measurement MX-sensor is mounted with respect to the maxilla and a measurement MN-sensor is mounted with respect to the mandible, and the positions of the measurement sensors are recorded continuously during the performance of mandible movements.

The invention relates to a maxillary bone repair stent which can be in line with requirements on large-area maxillary bone defect shape repair and the like and a manufacturing method thereof. The maxillary bone repair stent is characterized in that the maxillary bone repair stent comprises a maxillary bone-shaped stent body, four protrudent connecting areas with sunk hole array structures are sequentially distributed on the upper edge of the maxillary bone-shaped stent body, and the connecting areas are the right cheekbone connecting area, the right piriform aperture connecting area, the leftpiriform aperture connecting area and the left cheekbone connecting area respectively; a piriform aperture shape repair area is arranged between the right piriform aperture connecting area and the left piriform aperture connecting area; a maxillary bone grafting area is distributed on the lower edge of the maxillary bone-shaped stent body; a maxillary alveolar area is distributed between the upperedge and the lower edge of the maxillary bone-shaped stent body; and the maxillary bone grafting area and the maxillary alveolar area both have through hole array structures.