# US 4,397,837 A · Process and composition for the remineralization and prevention of demineralization of animal teeth including humans

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,397,837 A
- Document ID: US4397837A
- Status: Granted
- Kind: A
- Application number: 06/540,862
- Filed: 1975-01-14
- Granted: 1983-08-09
- Earliest claimed: 1972-02-02
- Assignees: Blendax-Werke R. Schneider GmbH & Co.
- Inventors: Helmut Raaf; Helmut Harth; Helmar R. Wagner
- Web page: https://patentgrep.com/patent/US4397837A

## CPC

- A61K 8/24: Phosphorous; Compounds thereof
- A61K 8/19: containing inorganic ingredients
- A61Q 11/00: Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
- A61K 2800/88: Two- or multipart kits
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

Compositions for the remineralization and prevention of demineralization of the teeth of animals including humans in the form of two phases, one phase containing a water-soluble calcium compound and the other phase containing a water-soluble phosphate and optionally a water-soluble fluorine compound. The concentration of calcium and phosphate (PO.sub.4) ions is about 50 to 35,000 ppm and 50 to 40,000 ppm respectively, and the amount of fluorine compound is about 0.01 to 5.0%, all by weight of the total composition. The compositions may also contain at least one of a conventional flavoring substance, aroma substance, surfactant, astringent, polishing agent, thickener and preservative.

## Claims

### Claim 1

Process for remineralizing demineralized dental enamel of the tooth with a precipitate bound to the tooth structure, said process comprising the steps of applying first ions to the tooth surface so that said first ions diffuse through the tooth surface into demineralized dental enamel and thereafter applying second ions to the tooth surface into demineralized dental enamel and form a precipitate with previously applied first ions in said dental enamel, said first ions comprising one of either calcium ions or phosphate ions, said second ions comprising the other of either calcium ions or phosphate ions, said calcium ions being applied in the form of a solution comprising from about 0.005 to about 3.5% of calcium ion from a water-soluble calcium salt which is compatible in the oral environment, said phosphate ions being applied in the form of a solution comprising from about 0.005 to about 4% of phosphate ions a water-soluble phosphate salt which is compatible in the oral environment, each of the applications being carried out for a time period consistent with normal dental care habits.

### Claim 2 (depends on 1)

Process as recited in claim 1, in which said first ions comprise calcium ions.

### Claim 3 (depends on 1)

Process as recited in claim 1, in which said second ions comprise phosphate ions and fluoride ions.

### Claim 4 (depends on 3)

Process as recited in claim 3, in which said second ions are applied in the form of a solution comprising from about 0.005 to about 4% of a water-soluble phosphate ion and from about 0.01 to about 5% of a water-soluble fluoride ion, said ions being from salts which are compatible in the oral environment.

### Claim 5 (depends on 1)

Process as recited in claim 1, in which said calcium salt is calcium chloride and in which said phosphate salt is disodium phosphate.

### Claim 6 (depends on 1)

Process as recited in claim 1, comprising applying the first ions in the form of a toothpaste and applying the second ions in the form of a mouthwash.

### Claim 7 (depends on 1)

Process as recited in claim 1, comprising applying the first ions in the form of a toothpaste and applying the second ions in the form of a toothpaste.

### Claim 8 (depends on 1)

Process as recited in claim 1, comprising applying the first ions in the form of a mouthwash and applying the second ions in the form of a mouthwash.

### Claim 9 (depends on 1)

Process as recited in claim 1, comprising applying the first ions in the form of a mouthwash and applying the second ions in the form of a toothpaste.

### Claim 10 (depends on 1)

Process as recited in claim 1 in which fluoride ions are applied along with the phosphate ions.