The present invention provides a dental hand piece for assisting depth measurement comprising a hand piece main body and at least one measuring scale. The hand piece main body has a hand piece head, a joint section and a holding section; a drill is engaged with the hand piece head; and the joint section is connected to the hand piece head and the holding section. The at least one measuring scale is disposed on a surface of the hand piece head, and perpendicular or parallel to the drill. Therefore, the dental hand piece for assisting depth measurement provides the dentist with a clear indication of the measuring scale when drilling or grinding, to avoid the problem of excessive or insufficient drilling depth, so as to achieve the stability of the dental implant after the operation.

The present invention provides a dental hand piece for assisting depth measurement comprising a hand piece main body and at least one measuring scale. The hand piece main body has a hand piece head, a joint section and a holding section; a drill is engaged with the hand piece head; and the joint section is connected to the hand piece head and the holding section. The at least one measuring scale is disposed on a surface of the hand piece head, and perpendicular or parallel to the drill. Therefore, the dental hand piece for assisting depth measurement provides the dentist with a clear indication of the measuring scale when drilling or grinding, to avoid the problem of excessive or insufficient drilling depth, so as to achieve the stability of the dental implant after the operation.

The present invention relates to a dental tool system, comprising a detection system (101) for detecting a spatial position (103-Z) of a tooth (115) or a tooth situation and a spatial tool position (103-W) of a tool (107); and a device (105) for controlling or regulating the tool (107) on the basis of the detected tool position (103-W) in relation to the position (103-Z) of the tooth (115) or the tooth situation.

A set of drill bits and/or burrs for attaching to a hand piece and fitting into an access guide during endodontic access cavity preparation is provided. The drill bits are optionally grouped into two types: a high speed, friction grip attachment type drill bit and a slow speed, latch attachment type drill bit. Each of the drill bits has a different longitudinal length for performing different functions during operation procedures. A method of performing an endodontic access cavity preparation with the set of drill bits is also provided.

A set of drill bits and/or burrs for attaching to a hand piece and fitting into an access guide during endodontic access cavity preparation is provided. The drill bits are optionally grouped into two types: a high speed, friction grip attachment type drill bit and a slow speed, latch attachment type drill bit. Each of the drill bits has a different longitudinal length for performing different functions during operation procedures. A method of performing an endodontic access cavity preparation with the set of drill bits is also provided.

A root canal dental instrument is disclosed. The dental instrument includes a handle configured to be coupled to a dental hand piece, and a spiral spindle coupled to the handle. The spiral spindle includes a shaft, which includes a rounded tip, and a continuous spiral protrusion abutting the shaft and extending along a length of the shaft, the continuous spiral protrusion ending on the shaft prior to the rounded tip.

A root canal dental instrument is disclosed. The dental instrument includes a handle configured to be coupled to a dental hand piece, and a spiral spindle coupled to the handle. The spiral spindle includes a shaft, which includes a rounded tip, and a continuous spiral protrusion abutting the shaft and extending along a length of the shaft, the continuous spiral protrusion ending on the shaft prior to the rounded tip.

A dental treatment apparatus includes a holder, a power supply, root canal length measurement circuitry, and control circuitry. The holder holds an electrode placed in a root canal. The power supply energizes file with a high-frequency current. The root canal length measurement circuitry electrically measures a position of a distal end of electrode in the root canal. The control circuitry causes, in accordance with information on the position of the distal end of the electrode measured by root canal length measurement circuitry, the power supply to control a current value of the high-frequency current which energizes the electrode.

A dental treatment apparatus includes a holder, a power supply, root canal length measurement circuitry, and control circuitry. The holder holds an electrode placed in a root canal. The power supply energizes file with a high-frequency current. The root canal length measurement circuitry electrically measures a position of a distal end of electrode in the root canal. The control circuitry causes, in accordance with information on the position of the distal end of the electrode measured by root canal length measurement circuitry, the power supply to control a current value of the high-frequency current which energizes the electrode.

A processing device receives, from an image capture device associated with an augmented reality (AR) display, a plurality of images of a face of a patient. The processing device selects a subset of the plurality of images that meet one or more image selection criteria. The selection comprises determining, from the plurality of images, a first image that represents a first position extreme for the face; determining, from the plurality of images, a second image that represents a second position extreme of the face; selecting the first image; and selecting the second image. The processing device further generates a model of a jaw of the patient based at least in part on the subset of the plurality of images that have been selected.