Apparatus and methods for removing a dental crown from a tooth. Chemical bonds within an adhesive, between the adhesive and the crown, and between the adhesive and the tooth may secure the crown to the tooth. The chemical bonds may be weakened. After weakening the bonds, the crown may not be securely affixed to the tooth. After weakening the bonds, the crown may be easily removed from the tooth. The bonds may be weakened by applying ultrasonic waves to the adhesive. Sonic energy of the waves may heat the adhesive. The bonds may be weakened by positioning the adhesive within an electric field. The bonds may be weakened by applying heat to the adhesive. The heating may cause particles within the adhesive to expand. The electric field and/or the sonic energy may be applied via an electronic tool.

An apparatus for implanting a medical implant into bone includes: an implant having at least one predetermined natural frequency; and an instrument, comprising: a housing; a coupler carried by the housing and configured to be mechanically connected to a medical implant; and a forcing mechanism carried by the housing and operable to apply a cyclic excitation force at the predetermined natural frequency.

Device and method for the retrieval of osseointegrated dental implants by combining thermal energy and ultrasonic vibration.

A tooth loosening device comprises a body having a tooth contacting portion connected to a handling portion. The tooth contacting portion has a tooth contacting member including one or more surfaces adapted to contact a tooth, and the handling portion includes a manipulation member. The tooth contacting portion can be inserted into a mouth having a tooth in need of loosening, and the manipulation member can position the tooth contacting member so that the one or more surfaces contacts the tooth in need of loosening. The tooth in need of loosening can then be loosened by manipulation of the tooth loosening device. A vibrating mechanism can also be provided to apply vibration to the tooth in need of loosening.

A dental crown removal apparatus is provided, including a handle for placement in an operator's hand, an elongated post projecting along a first axis, the post being connected for reciprocal motion with respect to the handle, a motor in the handle for moving the post, a tool adapter connected with the post opposite the handle, the tool adapter having an extension arm extending away from the handle with a pivot arm connected with the extension arm and spaced from the handle, and first and second opposing jaws having claw ends spring biased together, the first and second jaws having independent and unitary pivotal connection with the pivot arm.

A dental crown removal apparatus is provided, including a handle for placement in an operator's hand, an elongated post projecting along a first axis, the post being connected for reciprocal motion with respect to the handle, a motor in the handle for moving the post, a tool adapter connected with the post opposite the handle, the tool adapter having an extension arm extending away from the handle with a pivot arm connected with the extension arm and spaced from the handle, and first and second opposing jaws having claw ends spring biased together, the first and second jaws having independent and unitary pivotal connection with the pivot arm.

A tooth loosening device comprises a body having a tooth contacting portion connected to a handling portion. The tooth contacting portion has a tooth contacting member including one or more surfaces adapted to contact a tooth, and the handling portion includes a manipulation member. The tooth contacting portion can be inserted into a mouth having a tooth in need of loosening, and the manipulation member can position the tooth contacting member so that the one or more surfaces contacts the tooth in need of loosening. The tooth in need of loosening can then be loosened by manipulation of the tooth loosening device. A vibrating mechanism can also be provided to apply vibration to the tooth in need of loosening.

A surgical tool with an improved drive system may feature an uneven, rotating, swash plate pushing against a spring biased driving shaft to transform rotary motion to linear motion. As the swash plate pushes forward, the spring tension increases and is then continually released as the swash plate is rotates to a point where less pressure is applied to the shaft. The motion is then smooth, continuous, and reciprocating. Various tool bits may be provided for various operations.

A tooth loosening device comprises a body having a tooth contacting portion connected to a handling portion. The tooth contacting portion has a tooth contacting member including one or more surfaces adapted to contact a tooth, and the handling portion includes a manipulation member. The tooth contacting portion can be inserted into a mouth having a tooth in need of loosening, and the manipulation member can position the tooth contacting member so that the one or more surfaces contacts the tooth in need of loosening. The tooth in need of loosening can then be loosened by manipulation of the tooth loosening device. A vibrating mechanism can also be provided to apply vibration to the tooth in need of loosening.