Two-Part Implant with a Hydroxylated Soft Tissue Contact Surface

Abstract

Two-part implant for attachment of artificial teeth comprising a base body having a bone contact surface and a soft tissue contact surface. Said soft tissue contact surface is at least partially hydroxylated or silanated which results in an improved soft tissue integration.

1 . Two-part implant for attachment of artificial teeth comprising a base body having a bone contact surface and a soft tissue contact surface, and wherein the soft tissue contact surface is at least partially hydroxylated or silanated. 
   
   
       2 . Implant according to  claim 1 , wherein the soft tissue contact surface is completely hydroxylated. 
   
   
       3 . Implant according to  claim 1  or  2 , wherein the soft tissue contact surface is roughened. 
   
   
       4 . Implant according to  claim 1  or  2  wherein the soft tissue contact surface is smooth. 
   
   
       5 . Implant according to  claim 1  or  2 , wherein the surface roughness of the soft tissue contact surface increases towards the bone contact surface continuously or stepwise. 
   
   
       6 . Implant according to  claim 1 , wherein the soft tissue contact surface is hydrophilic. 
   
   
       7 . Implant according to  claim 1 , wherein the soft tissue contact surface has the same macroscopic texture as the bone contact surface. 
   
   
       8 . Implant according to  claim 1 , wherein the implant is made of titanium, zirconium, niobium, hafnium and tantalum or alloys thereof. 
   
   
       9 . Implant according to  claim 1 , wherein the soft tissue contact surface of the implant has a hydroxylated ceramic coating. 
   
   
       10 . Implant according to  claim 1 , wherein the implant is made of ceramic. 
   
   
       11 . Method for producing an implant in accordance with  claim 1 , wherein the soft tissue contact surface is treated with an electrolytic or chemical etching procedure until a hydroxylated surface has been produced. 
   
   
       12 . Method according to  claim 11 , wherein the soft tissue contact surface is shot-blasted, sand-blasted and/or roughened using plasma technology before treating with the electrolytic or chemical etching procedure. 
   
   
       13 . Method according to  claim 11  to  12  wherein the chemical etching procedure is carried out with an inorganic acid or a blend of inorganic acids. 
   
   
       14 . Method according to  claim 13  wherein said inorganic acids are selected from the group consisting of hydrofluoric acid, hydrochloric acid, sulphuric acid or mixtures thereof. 
   
   
       15 . Method according to  claim 14  wherein said blend of inorganic acids is hydrochloric acid (conc.), hydrogen peroxide and water in a weight ratio of approximately 1:1:5. 
   
   
       16 . Method according to  claim 14 , wherein said blend of inorganic acids is a mixture of hydrochloric acid (conc.)/sulphuric acid (conc.)/water in a weight ratio of 2/1/1. 
   
   
       17 . Method according to  claim 11 , wherein the soft tissue contact surface is washed with pure water which can additionally comprise additives, in an atmosphere that is inert in relation to the surface, and
 the surface, without subjection to a further treatment, is stored in an atmosphere that is inert in relation to the implant surface, and/or constantly in the presence of pure water which can comprise additional additives.   
   
   
       18 . Method according to  claim 17 , including sealing the implant in a covering which is impermeable for gases and liquids. 
   
   
       19 . Gas-tight and liquid-tight covering containing the implant according to  claim 1 .