Crown removing device

Claim 2

Crown removing apparatus, comprising: a pair of jaws for being received about the crown; a material carried by the jaws and having a surface for contactingly gripping the crown, said surface being contoured to substantially the same shape as that of the crown being gripped; and means interconnected with said jaws for exerting a force on said jaws in such direction as to remove said crown.

Claim 3

Crown removing apparatus as in claim 1, in which said material consists of an auto-polymerizing plastic.

Claim 4

Apparatus for removing a crown from a tooth, said crown having an opening in its top, comprising: a base; a pair of jaws extending from the same side of the base for being received about the crown with the base extending over the crown top; a quantity of molded material carried by each jaw for contacting the opposed crown surface, the surface of said material contacting the crown surface also conforming to the crown surface; a threaded member received in a similarly threaded opening in said base and having an end passing through the crown opening and bearing on the underlying tooth.

Claim 5

Apparatus for removing a crown from a tooth, said crown having an opening in its top, comprising: a base; a pair of jaws extending from the same side of the base for being received about the crown with the base extending over the crown top; a quantity of molded material carried by each jaw for contacting the opposed crown surface, the surface of said material contacting the crown surface also conforming to the crown surface; a threaded member received in a similarly threaded opening in said base and having an end passing through the crown opening and bearing on the underlying tooth.

Claim 6

Apparatus as in claim 3, in which said jaws are relesably interconnected with said base for adjustment toward and away from each other.

Claim 7

Apparatus as in claim 3, in which there are further provided at least one rodlike member embedded in said molded material and extending between said jaws.

Claim 8

Apparatus as in claim 3, in which said base includes a pair of elongated slots through which individual threaded members pass for threaded receipt within the jaws, whereby said jaws are positionally adjustable with respect to each other.

Claim 9

Apparatus for removing a crown from a tooth, said crown having an opening in its top, comprising: an elongated base having a top side and a bottom side; a pair of jaws extending from the base bottom side for being received about the crown with the base extending over the crown top, said jaws having concavely formed surfaces facing each other; first and secOnd quantities of molded material respectively received between each jaw and the opposed crown surface, said quantities conforming to the crown surface; and a threaded member received in a similarly threaded opening in said base and having first end passing through the crown opening and bearing on the underlying tooth and a second end extending above said base terminating in a head portion.

Claim 10

Apparatus for removing a crown from a tooth, said crown having an opening in its top, comprising: an elongated base having a top side and a bottom side; a pair of jaws extending from the base bottom side for being received about the crown with the base extending over the crown top, said jaws having concavely formed surfaces facing each other; first and secOnd quantities of molded material respectively received between each jaw and the opposed crown surface, said quantities conforming to the crown surface; and a threaded member received in a similarly threaded opening in said base and having first end passing through the crown opening and bearing on the underlying tooth and a second end extending above said base terminating in a head portion.