at about 3 bar subsequently the roughened surface macro roughness was treated with a mixture of potassium hydroxide and sodium hydroxide in a molten salt with a ratio of koh naoh of 1 1 at a temperature of over 190 u00b0 c for about 30 hours after the etching the implant was treated with pure deionised water in ultrasound and then washed and rinsed in deionised water after the etching the implant was treated with pure deionised water and then washed and rinsed in deionised water subsequently the implant was immersed into an aqueous 0 05 m naoh solution for 10 seconds after air drying of the surface the implant was stored in air at room temperature for 4 weeks subsequently one was able to qualitatively determine by complete wetting with a drop of water that the surface behaves in a hydrophilic manner titanium dental implants were produced from titanium cp degree 4 the surface of the implants was then provided with a macro roughness by sand blasting it with a particle of al 2 o 3 at about 4 bar subsequently the roughened surface was etched at a high temperature with a mixture of hydrochloric acid and sulphuric acid in order to achieve a micro structuring after the etching the implants were treated with pure deionised water and then washed and rinsed in deionised water subsequently the implants were not treated any further yet and individually packaged they were subsequently packaged together at a time in a combination package with a separate sterilely closed container containing an aqueous naoh solution with various concentrations in the range of 0 005 0 5m preferably 0 005 0 07m therein the size and filling of the container was chosen such that after unpacking the implant was able to be laid into the.