Abstract: The present invention relates to an implant unit comprising: an artificial dental root including a plate portion having a first side surface and a second side surface extending along the horizontal extending direction of the alveolar bone and opposed to each other, and a base portion protruding from the first side surface at the upper end of the plate portion, penetrating through a surface of the alveolar bone, and being implanted into the alveolar bone; and at least more than one abutment formed on the upper end of the base portion.

Abstract: An adapter may be used to couple an imaging device, such as a smartphone, to an optical device such as a telescope. The adapter may have an optical device mounting feature that mounts the adapter to the optical device, an imaging device mounting feature that mounts the imaging device to the adapter, and a positioning mechanism that adjustably positions the imaging device mounting feature relative to the optical device mounting feature. The optical device mounting feature may have a first arm, a second arm that is movable relative to the first arm to clamp a portion of the optical device between the first arm and the second arm, and a lock that can be actuated to restrict motion of the second arm away from the first arm. The positioning mechanism may be actuatable to move the imaging device, relative to the optical device, along three orthogonal axes.

Abstract: A method comprises rotating a first rotating element to cause rotation of a second rotating element and restricting, by an elongate slot of a first body portion and a pin affixed to a second body portion, a range of rotational motion of first and second jaw portions of a medical instrument. The first jaw portion is coupled to the second jaw portion by the first body portion and the second body portion. The rotation of the second rotating element causes translation of a first actuation element along a rotational axis of the second rotating element. The translation of the first actuation element causes pivotal motion of the first jaw portion towards the second jaw portion about a single pivot pin. The elongate slot of the first body portion and the pin affixed to the second body portion are positioned between the second rotating element and the single pivot pin.

Abstract: Various aspects are directed to dental extraction and dental extraction devices. As may be implemented in accordance with one or more embodiments herein, a dental extraction apparatus includes an engagement component that extracts teeth from patients' mouths by engaging with and applying a torque to a tooth. An input torque component translates received input torque to the engagement component. A torque controller operates with the input torque component and the engagement component to limit the applied torque, relative to input torque provided via the input torque component.

Abstract: An endoscopic treatment tool includes a sheath, a support portion which is attached to a distal end of the sheath, a pair of forceps members which are provided on the support portion, a linear portion which is inserted through the sheath so that the linear portion is capable of advancing and retracting, the linear portion causing facing surfaces each provided on the pair of forceps members to approach each other, and the linear portion separating the pair of facing surfaces from each other, an engaging portion which is provided in the support portion, an engaged portion which is provided in the linear portion, and a moving mechanism that moves the position of the distal end portion of the linear portion to a distal end position closer to the distal end side than the engaged portion.

Abstract: A dental separator ring includes an elastic body having a first end and an opposed second end spaced from the first end. The body has three axes defined by a front to rear reference line of the body, a side to side reference line of the body, and a top to bottom reference line of the body. A first surface engager is connected to the first end of the body by a first connector, and a second surface engager is connected to the second end of the body by a second connector. The first connector allows motion of the first surface engager in all three axes, and the second connector allows motion of the second surface engager in all three axes. A third surface engager and a fourth surface engager that allow motion in all three axes may also be included in the separator ring.

Abstract: A tooth separator apparatus, according to one embodiment, includes a tong having two resilient arms that are biased in an open position and having a wedge at each end of each arm. A drive shaft moves a compression member to overcome the resiliency of the arms and move them and the wedges in a closing direction for separating the teeth. The drive shaft can also move the compression member in the opposite direction to release the closing force on the arms and thereby permit their resiliency to allow them and the wedges to move to an open position.

Abstract: A divice for the removal of teeth and/or tooth roots from a tooth socket or from a jawbone includes an extractor having a fisrt and second lever and a first and second branch pivotably connected to each other by a hinge, the first branch including a receiving part. A rod for mechanically and manually adjusting the first and second levers is provided. An adjusting part for axially moving the rod relative to the second lever against a force needed to extract a tooth is provided. An extracting part including at least one resistance element is provided for anchorinf the tooth or a tooth stump, the extracting part including a first support for coupling with the receiving part of the first branch. A second support is placed against the extractor and has an openning for the extracting part.

Abstract: A dental instrument comprising a grasping device in the form of a tweezer member having a finger receiving ring detachably connected to one of the legs of the tweezer member is disclosed. The instrument is used for holding and inserting a Cerec inlay, manufactured by a dental Cerec machine, in a tooth undergoing a restorative procedure. The instrument may further include a threaded axle which coacts with each leg of the tweezers and protrudes from one of the legs. The instrument may also further include a plunger mechanism which facilitates the insertion of an inlay in a prepared tooth cavity.

Abstract: A two prong clamp is adjustably attachable to a dental prosthetic device with compressible resilient inserts to securely grip and retain the dental prosthetic device without causing damage while a force is applied to the clamp sufficient to dislodge and remove the dental prosthetic device. A tool for engaging and exerting a force upon the clamp or upon a bridge is also shown.

Abstract: A dental crown (cap) remover with unique crown separating and removing means is adaptable to a wide variety of crown sizes and configurations and does not place compressive or axial forces on the underlying tooth or its supporting processes (alvoelar bone and periodontal fibers). The crown remover has a grasping and tightening mechanism that allows the dentist operator to firmly seat the crown remover on the crown to be removed, and has an elliptical separating mechanism that inserts in a precut groove in the crown and forces separation of the halves of the crown, increasing the circumferential dimension breaking the cementing medium and loosening the crown from the underlying tooth, providing for ease of separation of the crown from the tooth.

Abstract: A tooth root extractor comprises first and second elongate arms pivotally connected at adjacent first ends thereof. A threaded tooth root screw is operably retained by a free end of the first arm and operably engages and is received within a root of a tooth to be extracted. A free end of the second arm is supported by gums or teeth surrounding the tooth root. A jackscrew positioned between the two arms is manipulable to bias the arms apart, thereby extracting the tooth root. The jackscrew is located exteriorly of the mouth of the patient when the extractor is in an operational position thereof.

Abstract: A dental instrument having a unitary handle which includes a pair of elongated spaced apart arcuate grip portions. The grip portions are integrally connected to each other at a forward part of the handle and connected together at their rear ends by an integral rear part which extends transversely between the grips. A captive operating nut supported on the rear part is threadably engaged with an operating rod which extends longitudinally of the handle between and in spaced relation to the grips. The nut is operable to move an associated beak generally toward another opposing beak mounted in fixed position at the forward end of the handle. The movable beak may be pivotally supported on the forward part of the handle or may comprise a part of the operating rod.

Abstract: A dental contact matrix system is described for the placement of dental fillings. The dental contact matrix system includes a matrix, a retainer for placing and retaining the 5 matrix and an elastic wedge. The retainer includes two lugs or tines that fit between two teeth on the buccal and lingual sides of the teeth. The lugs are connected by a spring member that presses the lugs against the lingual and buccal sides of the teeth. There is an adaptation to hold the elastic wedge in a stretched condition between the lugs.