Abstract: An electrical discharge irrigation device and method is described. An electrical discharge irrigation device includes a power source, a circuit coupled to the power source, and an output tip coupled to the circuit. The output tip includes a first end and a second end and a longitudinal axis extending between them, an electrode located in an interior space of the output tip configured to receive an electrical charge from the circuit and to release an electric discharge, and a ground return including an inner surface of the output tip, wherein a space between the electrode and the ground return comprises a conductive medium, the conductive medium being in contact with the electrode and the ground return to produce the electric discharge.

Abstract: An electrical discharge irrigation device and method is described. The device includes a power source to produce a first voltage, a circuit coupled to the power source to convert the first voltage to a second voltage, a discharge capacitor to receive the second voltage from the circuit, at least one of a transistor and a controlled rectifier coupled to the discharge capacitor to receive the second voltage, and an output tip. This output tip is coupled to the at least one of a transistor and a controlled rectifier and includes a first end and a second end and a longitudinal axis extending between them, an electrode located in an interior space of the output tip configured to receive an electrical charge from the at least one of a transistor and a controlled rectifier and to release an electric discharge, and a ground return.

Abstract: An electrical discharge irrigation device includes a power source to produce power of a first voltage, a circuit coupled to the power source to convert the power of the first voltage to power of a second voltage where the second voltage is higher than the first voltage, a trigger to activate the circuit, an igniter coupled to the circuit to produce a spike, an electrical charge storage component coupled to the igniter the electrical charge storage component becoming conductive and storing an electrical charge after receiving the spike, and an output tip. The output tip includes an electrode and insulating material as an outer layer.

Abstract: A sterilization cassette has a slide latch system to secure the lid of the cassette to the body of the cassette. A finger tab on the outside of the cassette moves a latch arm on the inside of the cassette along a slot. A tension spring secures the position of latch components whether the latch is open or closed. Spacers between the cassette and latch parts facilitate smooth gliding action. The latch arm engages an angled bracket on the lid of the cassette. Alternating notch depths on instrument rails within the cassette work with opposing rails that likewise have alternating depths of notches to capture and hold instruments. This notch configuration causes the handles of adjacent instruments stowed in the cassette to stagger in height so that a clinician can access the handles of the stowed instruments.

Abstract: A device and method of using a device for photon-induced endodontic and periodontic applications includes a power source, a trigger coupled to the power source and circuit elements initiated by the trigger. The circuit elements include a timing circuit and a driver. A light source is coupled to the circuitry elements wherein and driver controls the period, cycle, and pulse generation of the light source to create photon induced acoustic waves. The optical assembly includes a fiber optic cable and an output tip and is coupled to the light source. This optical assembly refracts light from the light source and photon induced acoustic waves exit the output tip in a pre-determined pattern.

Abstract: An ultrasonic instrument includes a tip portion, a transducer configured to convert electrical energy into vibrational energy, an acoustic transformer interconnecting the transducer and the tip portion, and a grip portion disposed at least partially about the acoustic transformer. The grip portion is coupled to the acoustic transformer via a resilient nodal coupling at a nodal region of the acoustic transformer. The resilient nodal coupling is configured to provide rotational and axial stability to the acoustic transformer.

Abstract: A dental hand instrument comprises an elongated handle formed of a thermosetting plastic and a metal working tip inserted into an end of the handle. The handle may be a multi-part assembly with replaceable working tip end sections. The handle has a bore provided in the end to accommodate a shank end of the tip. The handle and the tip are subjected to heat treatment to partially melt a portion of the thermosetting plastic adjacent to the shank end to bind the shank in solid plastic-to-metal contact along the shank end. The shank end of the tip is provided with a non slip surface that is encompassed and embedded in the thermosetting plastic so that the tip will not turn during use.