Crown remover

Abstract

An improvement in a dental crown removing pliers having a pair of opposed arm members pivotally connected to define on one side of the pivot a pair of opposed jaws which improvement resides in a resilient deformable gripping surface on the surface of said jaws generally contoured to coincide with a side surface of a crown, said resilient deformable gripping surface adapted to hold at least one jaw of said pliers against the surface of a crown; a method of removing a crown by gripping the same in the jaws of a dental crown removing pliers which has on a surface of at least one jaw a resilient deformable gripping surface.

What is claimed is: 
     
       1. In a dental crown removing pliers, having a pair of opposed arm members pivotally connected to define on one side of the pivot a pair of opposed jaws, the improvement which comprises a resilient deformable gripping surface on at least one jaw, the surface of said jaw generally contoured to coincide with a side surface of a crown or bridge, said resilient deformable gripping surface adapted to hold at least one jaw of said pliers against a portion of the side surface of a crown, the surface of said jaw being made of a porous material which absorbs water. 
     
     
       2. An improvement according to claim 1, wherein the surface contains inwardly directed gripping fingers or nipples which are deformable. 
     
     
       3. An improvement according to claim 2, wherein the jaws of the pliers comprise a pair of opposed concave jaw members. 
     
     
       4. Improvement, according to claim 2, wherein said resilient deformable gripping surface is of natural or synthetic rubber. 
     
     
       5. An improvement according to claim 2, wherein the combined area of the surfaces of the jaws of the pliers are at least 20 percent of the area of the side of the crown to be removed. 
     
     
       6. An improvement according to claim 2, wherein at least 50 percent of the surface of the jaw contains gripping fingers. 
     
     
       7. An improvement according to claim 2, wherein both of the opposed jaws are rounded and have a roughened rubber surface. 
     
     
       8. An improvement according to claim 2, wherein the surface of both jaws is made of a resilient deformable gripping surface. 
     
     
       9. A method for removing a dental crown which comprises gripping the crown within the jaws of the dental pliers of claim 2 and applying a force to said crown away from its substrate whereby to separate said crown from said tooth. 
     
     
       10. An improvement according to claim 1, wherein one jaw is provided with a convex-shaped gripping surface and the opposed jaw is provided with a concave-shaped gripping surface. .Iadd. 11. In a dental instrument for grasping a dental crown and the like which has a shape and surface similar to a tooth: (a) a scissors comprising a pair of movable members each having a tip opposed to and spaced from the other,   (b) manually operated scissors handles on the respective members on said instrument for moving the tips of said members towards or away from each other selectively to grasp or release a crown and the like therebetween,   (c) and a small cushioned and contoured pad affixed to each tip in opposed relationship on said tips, said pads being shaped to fit the opposite exterior of a crown and the like, whereby a dental crown and the like may be grasped by pressure on said handles from the hands causing said movable members to close said pads on said crown and the like and be held in place   
     
     
        during fitting and cementing. .Iaddend..Iadd. 12.  In a dental instrument for grasping a dental crown and the like which has a shape and surface similar to a tooth: (1) a hand member comprising a pair of movable members each having a tip opposed to and spaced from the other,   (b) manually operated hand member handles on the respective movable members on said instrument for moving the tips of said movable members towards or away from each other selectively to grasp or release a crown and the like therebetween,   (c) and a cushioned and contoured pad affixed to each tip in opposed relationship on said tips, said pads being shaped to fit the opposite exterior of a crown and the like, whereby a dental crown and the like may be grasped by pressure on said handles from the hands causing said movable members to close said pads on said crown and the like and be held in place during fitting and cementing..Iaddend..Iadd. 13. The device claimed in claim 12 wherein portions of each member is inclined upwardly so that the tips of the instrument incline upwardly. .Iaddend..Iadd. 14. The device in claim 12 wherein said pads are curved and have a cushioned face thereon. .Iaddend..Iadd. 15. The device in claim 12 wherein there is a latching means for the members. .Iaddend..Iadd. 16. The device claimed in claim 12 wherein the tips of said members are curved outwardly and thence inwardly thereby creating an upwardly extending pair of opposed tips defining a space in which a crown is clamped. .Iaddend..Iadd. 17. The device in claim 12 wherein said instrument is a scissors having the handles on each movable member which are opened and closed by manipulating the members, said members being inclined at the tips and curved outwardly and thence inwardly. .Iaddend. .Iadd. 18. In a dental crown removing pliers, having a pair of opposed arm members pivotally connected to define on one side of the pivot a pair of opposed jaws, the improvement which comprises a resiliently deformable gripping surface on at least one jaw, the surface of said jaw generally contoured to coincide with a side surface of a crown or bridge, said resilient deformable gripping surface adapted to hold at least one jaw of said pliers against a portion of the side surface of a crown, the surface of said jaw being made of a cushioned and contoured pad.