Abstract: There is provided a coupling device for electrically coupling a dental instrument to an electrical connector, including a tubular clasp made of an electrically conductive material having a first portion attachable to the connector and a second portion attachable to the dental instrument, the second portion having a slot facilitating insertion and holding of the dental instrument while performing a dental procedure.

Abstract: A system for determining and storing a dental root canal depth measurement comprising: an electronic apex locator configured to locate the apex of a dental root canal; a dental instrument configured to be inserted into the dental root canal, up to the apex thereof; and a remotely located computer configured to store data concerning the root canal apex. Data concerning the apex of the root canal is transmitted from the apex locator to the computer via Bluetooth transmission and may be exhibited on a display, along with the depth measurement of the root canal.

Abstract: The invention provides an assembly for measuring the penetration depth of a dental instrument into a root canal of a tooth. The assembly has a base element configured to be clampingly braced onto a tooth to be treated; an electrically conductive guiding member affixable to the base element and disposed, when assembled, above the tooth, thereby, in use, a portion of the dental instrument makes electrical contact with it. The guiding member further includes an electrical terminal connectable to an apex location measuring device. Methods for continuously measuring penetration depths of a dental instrument into a root canal of a tooth are also provided.

Abstract: Apparatus for determining the apex of a dental root canal in a tooth includes a software operated microcontroller having a pulse generator, a memory and an analog to digital converter (ADC), the pulse generator feeding pulses to a gain control circuit for controlling the amplitude of the pulses. The apparatus also includes a driver receiving signals from the control circuit for feeding the signals to an electrically conductive shaft having a leading edge and a dental instrument connectable thereto, an input buffer receiving signals from the dental instrument and feeding the signals to the ADC, and a display for exhibiting data concerning the distance of the leading edge of the shaft from the root canal apex. A method for determining the apex of a dental root canal in a tooth is also provided.

Abstract: There is provided a coupling device for electrically coupling a dental instrument to an electrical connector, including a tubular clasp made of an electrically conductive material having a first portion attachable to the connector and a second portion attachable to the dental instrument, the second portion having a slot facilitating insertion and holding of the dental instrument while performing a dental procedure.

Abstract: Apparatus for determining the apex of a dental root canal in a tooth includes a software operated microcontroller having a pulse generator, a memory and an analog to digital converter (ADC), the pulse generator feeding pulses to a gain control circuit for controlling the amplitude of the pulses. The apparatus also includes a driver receiving signals from the control circuit for feeding the signals to an electrically conductive shaft having a leading edge and a dental instrument connectable thereto, an input buffer receiving signals from the dental instrument and feeding the signals to the ADC, and a display for exhibiting data concerning the distance of the leading edge of the shaft from the root canal apex. A method for determining the apex of a dental root canal in a tooth is also provided.

Abstract: The invention provides an assembly for measuring the penetration depth of a dental instrument into a root canal of a tooth. The assembly has a base element configured to be clampingly braced onto a tooth to be treated; an electrically conductive guiding member affixable to the base element and disposed, when assembled, above the tooth, thereby, in use, a portion of the dental instrument makes electrical contact with it. The guiding member further includes an electrical terminal connectable to an apex location measuring device. Methods for continuously measuring penetration depths of a dental instrument into a root canal of a tooth are also provided.

Abstract: A surgical instrument of the type used for visualizing and carrying out different medical procedures within cavities in the body. The device comprises two rigid blades fitted for retracting tissue layers of the cavity thus foaming a path between the blades with a film of flexible and non elastic material ending between corresponding edges of the blades giving rise to side walls preventing collapse of tissue into the path between the blade.