Abstract: A crown and/or a replacement tooth and a method of in situ production thereof by grinding and shaping a tooth to form a prepared tooth; filling a transparent shell tooth form with a light setting resin; disposing the filled shell tooth form onto the prepared tooth; illuminating the filled transparent shell tooth form to set the light setting resin and bond the resin to the shell tooth form; and shaping and polishing the set resin in situ to form a crown. A set of shell tooth forms is provided which are formed from a light setting resin chemically compatible with the resin used to fill the form in order that bonding occurs therebetween. This feature enables the products of a replacement tooth formed in situ without the necessity of shell tooth form removal as heretofore required.

Abstract: A crown and/or a replacement tooth and a method of in situ production thereof by grinding and shaping a tooth to form a prepared tooth; filling a transparent shell tooth form with a light setting resin; disposing the filled shell tooth form onto the prepared tooth; illuminating the filled transparent shell tooth form to set the light setting resin and bond the resin to the shell tooth form; and shaping and polishing the set resin in situ to form a crown. A set of shell tooth forms is provided which are formed from a light setting resin chemically compatible with the resin used to fill the form in order that bonding occurs therebetween. This feature enables the products of a replacement tooth formed in situ without the necessity of shell tooth form removal as heretofore required.

Abstract: A medical device for holding caps for capping hypodermic syringe needles includes an elongate, squeezeable handle, elongate first and second cap-holding jaws, the jaws being mounted to the handle so as to cause the jaws to be in a closed condition when the handle is not squeezed and so as to cause the jaws to open when the handle is squeezed. The jaws, which are formed of elongate halves of a tube, have an inner opening sized to grip a needle cap when the jaws are in the closed condition and have an axial length which is substantially greater than the cross sectional dimension of the inner opening when the jaws are closed. Distal edges of the jaws are made relatively thin so as to enable the jaws to pick up a needle cap from a surface when the handle is squeezed to open the jaws and squeezing pressure on the handle is then released. The handle includes a spring for urging the jaws toward the closed position when the handle is not squeezed.