Refractory die with pin and sleeve for teeth restoration

Abstract

A refractory die removably mountable to a base with a model die for use in producing a crown or veneer to be attached to a tooth to be restored. The model die, produced from die stone, is removably mounted to the base with a portion of the model die corresponding to the tooth to be restored being separable therefrom and used to produce the refractory die. Porcelain is placed on the refractory die to produce the crown or veneer.

1 . A pin and sleeve combination for mounting a refractory tooth die comprising: 
 a main body including a top end, a bottom end, a front and a back, said main body having a longitudinal axis extending from said bottom end to said top end, said main body further having a pair of opposite sides extending from said bottom end to said top end and diverging as said sides extend in a direction from said bottom end to said top end, said main body having a first intermediate portion between said bottom end and said top end, said sides diverge outwardly at a first included angle as said sides extend from said bottom end to said intermediate portion and then at a second included angle as said sides extend from said intermediate portion to said top end with said second included angle being greater than said first included angle,    wherein said pair of opposite sides extending from said back to said front which diverge as said sides extend from said back to said front, said front being rounded as it extends between said opposite sides, said bottom end includes an extension projecting outwardly therefrom; and    a sleeve to mount onto and in spaced apart relation to said main body.    
   
   
       2 . The pin of  claim 1  wherein: 
 said top end is substantially flat.    
   
   
       3 . The pin of  claim 1  wherein: 
 said main body includes a second intermediate portion between said first intermediate portion and said top end.    
   
   
       4 . The pin of  claim 3  wherein: 
 said opposite sides diverge at a third included angle as said sides extend from said second intermediate portion to said top end with said third included angle being less than said second included angle.    
   
   
       5 . The pin of  claim 1  wherein: 
 said back is rounded as it extends between said opposite sides.    
   
   
       6 . The pin of  claim 5  wherein: 
 said opposite sides diverge as said sides extend from said bottom end toward said first intermediate portion, said front and back diverge as said front and back extend from said bottom end toward said first intermediate portion.    
   
   
       7 . The sleeve of  claim 1  wherein: 
 said sleeve fits loosely around said main body and said extension of said bottom end extends outwardly of said sleeve.    
   
   
       8 . A combination for use in producing a crown or veneer for a damaged tooth within a set of teeth comprising: 
 a base;    a multi part model die of a set of teeth removably mounted to said base, said model die including a damaged tooth portion separable from said model die and corresponding to a damaged tooth within said set of teeth, said portion removably mounted independently of said model die to said base;    a pin mounted with adhesive to said portion of said model die with said pin having a main body extending outwardly from said portion;    a sleeve to be placed around said main body when forming said base with said sleeve oversized relative to said main body forming an expansion space located between said sleeve and said main body; and,    a refractory die removably mounted independently from said model die to said base, said refractory die replicating and replacing said portion with said pin.    
   
   
       9 . The combination of  claim 8  wherein: 
 said sleeve fits loosely around said main body with said pin having a leg extending outwardly of said sleeve.    
   
   
       10 . The combination of  claim 9  wherein: 
 said pin having said main body including a top end, a bottom end, a front and a back, said main body having a longitudinal axis extending from said bottom end to said top end, said main body further having a pair of opposite sides extending from said bottom end to said top end and diverging as said sides extend in a direction from said bottom end to said top end, said main body having a first intermediate portion between said bottom end and said top end, said sides diverge outwardly at a first included angle as said sides extend from said bottom end to said intermediate portion and then at a second included angle as said sides extend from said intermediate portion to said top end with said second included angle being greater than said first included angle,    wherein said pair of opposite sides extending from said back to said front which diverge as said sides extend from said back to said front, said front being rounded as it extends between said opposite sides, said leg extends down from said bottom end.    
   
   
       11 . A method of producing replacement material to restore a first tooth within a set of teeth comprising the steps of: 
 creating a first impression of a set of teeth with a first tooth;    creating from said impression a model die of said set of teeth with said model die having a first portion corresponding to said first tooth to be restored;    providing mounting pins;    providing a pin having a main body;    mounting said mounting pins to said model die;    mounting said pin having said main body to said first portion with an adhesive so said main body projects therefrom;    creating a base adjacent said model die enclosing said pins and said enlarged section of said pin;    removing said model die with said pins and said pin having said main body from said base;    severing said model die into multiple portions including at least said first portion with said main body projecting therefrom and a second portion;    creating a second impression of said first portion with said main body projecting therefrom;    creating a first refractory die from said second impression providing a replica from refractory material of said tooth and said main body projecting therefrom;    mounting said refractory die and said second portion onto said base by inserting said pins and said replica of said tooth and enlarged section into said base; and,    placing material onto said refractory die to enable said first tooth to be restored.    
   
   
       12 . The method of  claim 11  wherein said set of teeth includes a second tooth to be restored that is spaced apart from said first tooth by teeth from said set and further comprising the steps of: 
 said first impression and said model die are created of said set of teeth with said first tooth and said second tooth, said model die having a third portion corresponding to said second tooth and said second portion corresponding to teeth of said set between said first tooth and said second tooth;    providing an additional pin having a main body and mounting said additional pin to said third portion with an adhesive so said main body of said additional pin projects therefrom;    said base is created so it also encloses said main body of said additional pin;    severing said model die into multiple portions including said third portion with said additional pin having said main body projecting therefrom;    creating a third impression of said third portion with said additional pin having said main body projecting therefrom;    creating a second refractory die from said third impression providing a replica of said second tooth and main body projecting therefrom;    mounting said first refractory die, said second refractory die, and said second portion onto said base; and,    placing material onto said second refractory die to finally configure said second tooth.    
   
   
       13 . A pin and sleeve combination comprising: 
 a main body including a top end, a bottom end, a front and a back, said main body having a longitudinal axis extending from said bottom end to said top end, said main body further having a pair of opposite sides extending from said bottom end to said top end and diverging as said sides extend in a direction from said bottom end to said top end, said main body having a beveled top end with a downwardly facing beveled surface diverging greater than said opposite sides;    wherein said front being rounded as it extends between said opposite sides, said bottom end includes an extension projecting outwardly therefrom; and    a sleeve to mount onto and in spaced apart relation to said main body.    
   
   
       14 . The pin of  claim 13  wherein: 
 said pair of opposite sides extend from said back to said front and said sides diverge as said sides extend from said back to said front.