Abstract: A dental pin assembly comprises a dental pin holder and a dental pin. The dental pin comprises a threaded portion which has been made by rolling, and a shank portion which is slid into a longitudinal bore defined in the holder and is secured therein by distorting the shank portion or the bore or both into interengagement while the shank portion is in the bore.

Abstract: A retentive dental pin comprising in sequence a lower portion which can be secured within the dentine of a tooth, and a head portion to which a tooth restoration may be secured, a detachable connection, and a fixing portion attached to the head portion by the detachable connection, characterised in that the head portion is connected to the lower portion by dentine-engaging structure comprising an inwardly and downwardly extending surface carrying grooves shaped to screw into the dentine.

Abstract: A dental post 5 has a lower portion 4 that is fitted within a pre-prepared dental root canal 2, 3 and an upper portion 6 to which a dental crown 8 can be fitted. The root canal is provided with a plurality of projections 26 that extend downwardly and inwardly and the post, which is preferably tapered, and the lower portion of the post has a plurality of notches 16 that are preferably independent grooves that face upwardly. The post can then be secured substantially without screwing, by means of cement in the annulus 7 between the post and the canal. Preferably the lower portion of the post is tapered and has grooves or other notches that open upwardly and outwardly and the upper portion has grooves that open downwardly. The pitch of the grooves 16 in the lower portion is generally not more than 0.5 mm.

Abstract: A system of packaging provides two or more interconnected containers A, B, C in which articles are retained and the containers can be separated from one another to gain access to the articles.The packaging is assembled from elements each including a male and female tubular member 10 and 11 interconnected by frangible connecting means 22. Male members are engaged with female members to assemble a chain of containers which pivot relative to one another.Separation of the connecting means to release a container enables the members 10 and 11 to be twisted relative to one another to gain access to the article.

Abstract: A dental pin having a threaded portion for insertion into a tooth is formed with a shank which has portions inclined relative to the threaded portion and to each other. The threaded portion and shank are of integral construction and the shank is of zig-zag shape.A holder for the pin can take several forms each with a bore for receiving the shank releasably but in driving engagement with the holder.The holder may take a form suitable for use with a dental handpiece or for manual insertion of the pin.The invention also provides a holder with a ratchet mechanism for manual insertion of the pin.

Abstract: Dental anchoring means of the kind including a threaded pin which is located in a hole in a tooth.Before insertion into the hole, the pin is integral with a shank through a neck which allows the pin to break off from the shank after insertion.The pin and shank are located in a longitudinal open-ended bore in a connecting member which is arranged to be secured in a dental handpiece.The pin and shank are fixed in the bore by forming an enlarged head on the shank which is a force fit in the bore. This locks the pin and shank securely in the bore during use and the connecting member can be of different material from the shank and pin.

Abstract: A package for articles is particularly suitable for small dental tools and fittings.The package includes a base member and a rotary member mounted for rotation relative to the base member.A circular space for the articles is defined between the base member and the rotary member and the space is divided into radial compartments arranged to receive the articles.The base member also defines a chute leading to a pocket, the chute communicating with the compartments for dispensing the articles upon rotation of the rotary member.The rotary member is transparent for viewing the articles in the compartments and the rotary member is indexable to ensure retention and release of articles from the compartments.

Abstract: Dental anchoring means includes a cylindrical shank having a turned over portion at one end and an integral threaded pin at the other end which is detachable from the shank.The anchoring means locates in holding means in the form of a sleeve with a longitudinal opening. The shank extends through the opening and is held for rotation with the sleeve by a stop member at one end of the sleeve which engages the turned over portion.The sleeve is located as a gear wheel in a dental handpiece which may be a self-contained unit.