Abstract: An ultrasound system for assessment of distance between an area of interest and a known location of a non-bone canal for use in drilling in an implant receiving cavity in the alveolar bone of a human subject's posterior mandible or posterior maxilla. The system comprises an ultrasound probe capable of being introduced at the area of interest and transceiving pulse echo ultrasound signal to the alveolar bone and therefrom and an electronic circuitry for processing the ultrasound signal and providing an indication of the remaining alveolar bone distance between said ultrasound probe and a canal within the alveolar bone.

Abstract: The invention relates to a measurement device for use in treatment of a patient's bone, containing a specific location, which is of the kind reflecting ultrasonic radiation and which is to be prevented from being contacted during the treatment. The measurement device comprises two ultrasound probes that are to be located at opposite sides of the bone. Both probes are capable of receiving the reflected ultrasonic radiation, at least one of the probes being a transceiver. The two probes are operable to communicate with each other to generate measured data indicative of a relative position of said location in the bone with respect to the probes. The invention also relates to a measurement device for use in dental treatment of a patient's alveolar bone that contains a nerve canal.

Abstract: The invention relates to a measurement device for use in treatment of a patient's bone, containing a specific location, which is of the kind reflecting ultrasonic radiation and which is to be prevented from being contacted during the treatment. The measurement device comprises two ultrasound probes tat are to be located at opposite sides of the bone. Both probes are capable of receiving the reflected ultrasonic radiation, at least one of the probes being a transceiver. The two probes are operable to communicate with each other to generate measured data indicative of a relative position of said location in the bone with respect to the probes. The invention also relates to a measurement device for use in dental treatment of a patient's alveolar bone that contains a nerve canal. The measurement device comprises a plurality of transceivers arranged in two arrays supported with adjustable distance between them so as to be placed at opposite sides of the bone, respectively, inside the patient's mouth.