# US 2012/0074098 A1 · Process for Treatment of the Surface of a Dental Implant

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- Number: US 2012/0074098 A1
- Document ID: US20120074098A1
- Status: Published application
- Kind: A1
- Application number: 12/915,876
- Filed: 2010-10-29
- Published: 2012-03-29
- Earliest claimed: 2010-09-24
- Inventors: Hugo NARY FILHO; Hiron Andreaza Da Cunha
- Web page: https://patentgrep.com/patent/US20120074098A1

## CPC

- A61C 8/0015: {being a conversion layer, e.g. oxide layer}
- C23C 22/54: Treatment of refractory metals or alloys based thereon
- C23F 1/26: for etching refractory metals
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- C23F: NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE (working metal by laser beams B23K26/00; desurfacing by applying flames B23K7/00; working of metal by electro-erosion B23H; producing decorative effects by removing surface material, e.g. by engraving, by etching, B44C1/22; electrolytic etching or polishing C25F); INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25

## Abstract

A processes for treating the surface of a dental implant wherein the dental implant after the machining operation undergoes a sequence of processes that are associated with the removal of all surface contamination, promoting the conditions to form a texturing and an oxide layer with thickness and composition that induces the interaction between the organism and the implant.

## Claims

### Claim 1

A processes for treating the surface of a dental implant, having an internal and an external screw, the process comprising the steps of:
(1) cleaning the internal screw of the implant;
(2) cleaning the external screw of the implant a first time;
(3) rinsing the implant a first time;
(4) drying the implant a first time;
(5) blasting the implant;
(6) cleaning the external screw a second time;
(7) rinsing the implant a second time;
(8) drying the implant a second time;
(9) etching the implant a first time;
(10) neutralizing the etched implant;
(11) rinsing the implant a third time;
(12) bathing the implant in isopropyl alcohol;
(13) bathing the implant in deionized water;
(14) etching the implant a second time;
(15) neutralizing the second time etched implant;
(16) rinsing the second time etched implant;
(17) bathing the second time etched implant in deionized water, and
(18) drying the second time etched implant.

### Claim 2

A processes for treating the surface of a dental implant, having an internal and an external screw, the process comprising the steps of:
(1) cleaning the internal screw of the implant, wherein the implant is immersed in a washing solution with D'Limonemo, in average heated concentration of 3:50, pressurized for a period of time of about 20 to 30 minutes;
(2) cleaning the external screw of the implant a first time, wherein the implant is immersed in a washing solution with D'Limonemo, in average heated concentration of 3:50, pressurized for a period of time of about 20 to 30 minutes, together with ultrasound;
(3) rinsing the implant a first time, wherein the dental implant is immersed in deionized water;
(4) drying the implant, wherein the implant is placed in a dryer at a temperature ranging from about 70° to about 80° C., for a period of time of about 30 to 40 minutes;
(5) blasting the implant, wherein the implant is placed in a blasting chamber using abrasive aluminum oxide (Al2O3) with an average particle size of 90 microns;
(6) cleaning the external screw a second time, wherein the implant is immersed in a washing solution with D'Limonemo, in average heated concentration of 3:50, pressurized for a period of time of about 20 to 30 minutes, together with ultrasound;
(7) rinsing the implant a second time, wherein the dental implant is immersed in deionized water;
(8) drying the implant a second time, wherein the implant is placed in a dryer at a temperature ranging from about 70° to about 80° C., for a period of time of about 30 to 40 minutes;
(9) etching the implant a first time, wherein the implant is immersed in an etching solution consisting of from 10% to 30% in volume of nitric acid 70%, and from 1% to 3% in volume of hydrofluoric acid 60% at 50° C.; for a maximum time of 2 minutes;
(10) neutralizing the etched implant, wherein the implant is immersed in a container with a neutralizing solution of sodium bicarbonate, having a pH of between 6 and 8, and further immersed in a solution of sodium bicarbonate, having a pH of between 7 and 8;
(11) rinsing the implant a third time, wherein the dental implant is immersed in deionized water.
(12) bathing the implant in isopropyl alcohol and deionized water, wherein the implant is immersed in a solution of isopropyl alcohol 99.5%, for a period of time of from 20 to 30 minutes;
(13) bathing the implant in deionized water, wherein the dental implant is immersed in deionized water;
(14) etching the implant a second time, wherein the implant is immersed in a passivation solution consisting of deionized water and nitric acid at a concentration of 30% in weight, for a period of time of about 40 minutes;
(15) neutralizing the second time etched implant, wherein the implant is immersed in a solution of sodium bicarbonate, having a pH of between 7 and 8;
(16) rinsing the second time etched implant, wherein the dental implant is immersed in deionized water;
(17) bathing the second time etched implant in deionized water, wherein the dental implant is immersed in deionized water;
(18) drying the second time etched implant, wherein the implant is placed in a dryer at a temperature ranging from about 70° to about 80° C., for a period of time of about 30 to 40 minutes.