AGENT FOR PROTECTION OF TOOTH SURFACES, IN CONJUNCTION WITH CONVENTIONAL BLEACHING METHODS, BY BIOMIMETIC DEPOSITION OF FLUORAPATITE

1 . Agent for protection of tooth surfaces, in conjunction with conventional bleaching methods, by biomimetic deposition of fluorapatite, comprising:

A at least one preformulated 50-1000 μm thick gel film A, comprising:

A1 at least one gel former,

A2 water or a mixture of water and an organic solvent,

A3 phosphate or hydrogen phosphate ions,

A4 optionally fluoride,

A5 optionally at least one amino acid,

A6 optionally one carboxylic acid or a buffer system for a pH value from 4 to 7.

B at least one 50 μm to 5 mm thick gel film B, comprising:

B1 at least one gel former,

B2 water,

B3 calcium ions Ca 2+ .

2 . Agent according to claim 1 , in which

A3 0.01-2 mol per liter of gel of a phosphate or hydrogen phosphate is contained.

3 . Agent according to claim 1 , in which

B3 0.05 to 3 mol per liter of gel calcium ions Ca 2+ are contained.

4 . Agent according to claim 1 , in which the gel former is gelatin.

5 . Agent according to claim 4 , in which the gelatin concentration in A and B is 1-15 wt. % each.

6 . Agent according to claim 5 , in which the gelatin concentration is 5-10 wt. %.

7 . Agent according to claim 1 , in which the phosphate or hydrogen phosphate is present as dissociated Na 2 HPO 4 (NH 4 ) 2 HPO 4 or K 2 HPO 4 .

8 . Agent according to claim 1 , in which the calcium ions are present as dissociated CaCl 2 .