Abstract: A measuring system for analysis of space for dental implant restoration comprises a first measuring assembly for measuring a mouth opening degree and a first gap of plural missing teeth, a second measuring assembly for measuring a second gap of a single missing tooth and an occlusal distance, and a third measuring assembly for measuring a transgingival depth, wherein each of the first measuring assembly, the second measuring assembly and the third measuring assembly comprises a connecting rod and a measuring head disposed at an upper end of the connecting rod. A measuring method for analysis of space for dental implant restoration using the aforesaid measuring system for analyzing is further disclosed.

Abstract: An apparatus is provided for releasably locking a stationary blade to a hair clipper, and includes a stationary blade with a blade opening, and a bracket configured for fixing the stationary blade to the hair clipper. Also, the bracket has a bracket opening. An actuator in the apparatus has a locking formation engageable in the openings and is operable between a first, locked position locking the stationary blade to the bracket, and a second, unlocked position releasing the stationary blade from the bracket.

Abstract: A safety razor is provided with a handle at one end of which is rigidly connected a head. A pair of movable, facing hooks is disposed at the ends of the head, and the hooks are removably engageable within housings formed in a blade-holder base. The hooks are pivotally mounted on corresponding pivot pins integral with the head and project along a certain portion from corresponding slots formed in the head. The slots define the stroke of the hooks from a first position of mutual maximum approaching to a second position of maximum spacing. The first position is obtained by way of a spring acting between the hooks. The head is fastened to the razor handle by a screw so that it can be disassembled therefrom, if necessary.