An aqueous solution for intraoral cleaning via irradiation with ultraviolet ray and/or near-ultraviolet visible ray and/or ray in an 800-900 nm near-infrared region is employed as the hydrogen peroxide aqueous solution, wherein a concentration of hydrogen peroxide is 1 w/v % to 7 w/v %, and a concentration of a hydrogen peroxide stabilizer is 81 ppm (mg/L) or less in the aqueous solution.

Periodontal disorders such as disorders associated with a dental implant are treated. An average power for a laser is selected via a user interface on a tablet, along with a set of permissible laser parameters provided in response to the selected average power. A gingival trough or flap is created around the implant with the laser. Infected tissue is selectively ablated or denatured via photothermolysis, and a pocket is lased around the affected implant. Marginal tissues are compressed against the implant.

The invention relates to a process for producing a dental restoration part using a machine tool (10), especially a dental processing machine intended for a dentist's office, wherein, in a first step, a rotating processing tool (16) rotationally mills or processes or grinds a workpiece (18) while, except from at least one entry and/or exit path, it is in continuous contact with the workpiece (18), i.e. with 0% air battle, by machining the outer profile (19) of the workpiece (18) substantially completely in helical-shape. The invention also relates to a dental processing machine.

A medical treatment apparatus includes a power and control (PAC) device. The PAC device provides electrical power through a cable to a laser handpiece assembly to electrically power a laser source within the handpiece assembly. The PAC device controls operation of the handpiece assembly and detects an identification of the handpiece assembly. The PAC device also monitors data relating to operation of the handpiece assembly. The PAC device uploads, through a communication network to a user assistance center remote from the PAC device, the handpiece assembly identification and the monitored data.

An ultrasonic unit manufacturing system and process are based on a universal ultrasonic generator unit that operates interchangeably with either one of piezoelectric and magnetostrictive ultrasonic devices, and optionally as well as with either on-off or power level control footswitches. The ultrasonic units use a generator unit having a detector that determines whether the connected device is piezoelectric or magnetostrictive, and activates the generator for the appropriate piezoelectric or magnetostrictive operating mode. The ultrasonic units so made and methods of using them are also disclosed.

A nozzle (14) for use with a personal care device (10), comprising: (i) a nozzle housing (50/52) defining a central channel (54) through which a stream of liquid and/or air is directed, and comprising a housing orifice (56) at the end of the central channel; (ii) a magnetorheological liquid housing (58) located over at least a portion of the nozzle housing at the housing orifice, and comprising a tip with an adjustable diameter orifice (59) through which the stream of liquid and/or air exits, wherein the adjustable orifice is adjustable between at least a first diameter and a second diameter; and (iii) one or more magnets (62) configured to control magnetorheological liquid (60) in the magnetorheological liquid housing to adjust between the at least first diameter and second diameter of the adjustable diameter orifice.

An aqueous solution for intraoral cleaning via irradiation with ultraviolet ray and/or near-ultraviolet visible ray and/or ray in an 800-900 nm near-infrared region is employed as the hydrogen peroxide aqueous solution, wherein a concentration of hydrogen peroxide is 1 w/v % to 7 w/v %, and a concentration of a hydrogen peroxide stabilizer is 81 ppm (mg/L) or less in the aqueous solution.

Periodontal disorders such as disorders associated with a dental implant are treated with a laser where an average laser power along with other laser parameters provide particular settings for the treatment, the treatment including one or more of creating a gingival trough or flap around the implant, ablating or denaturing infected tissue via photothermolysis, lasing a pocket around the affected implant, and compressing marginal tissues against the implant.

An apparatus for cooling tissues which are treated with an energy-based device, such as a laser, is disclosed. The apparatus comprises a spray nozzle which generates an atomized liquid spray for the treatment area, wherein the atomized liquid spray is based on a mixture of liquid and gas. Further, the spray nozzle comprises at least one liquid outlet which ejects a liquid, and at least one gas outlet which ejects a gas stream. Besides, the apparatus for cooling comprises at least one delivery means for delivering pressurized gas to the spray nozzle; and a pumping means for the liquid, wherein the pumping means is configured to operate in pulses.

The invention is directed to a light curing device, in particular for dental restoration materials, having a light source and a control device for the light curing device, which control device is capable of switching on the light source at different levels of power. The light curing device includes an actuation element which can be used to switch on the light curing device upon actuation by the user at a reduced dosage of light for pre-curing the dental restoration material. The control device in particular signalizes the reduced dosage.