POLYTETRAFLUOROETHYLENE MEMBRANE FOR ORIENTED REGENERATION OF PERIODONTAL TISSUES Russian patent published in 2005 - IPC

Abstract RU 2257232 C1

FIELD: stomatologic techniques and materials.

SUBSTANCE: proposed membrane comprises at least two porous polytetrafluoroethylene layers: one adjusting parodentium tissues and the other being outside layer, the two having different porous structure. Layer adjusting parodentium tissues is characterized by volume portion of hollow space equal to 78-94%, specific surface of hollow space 0.5-0.9 mcm²/mcm³, average distance between hollows 20.0-50.0 mcm, and average volumetric chord 20.0-30.0 mcm. Outside layer is characterized by volume portion of hollow space equal to 30-60%, specific surface of hollow space 0.1-0.5 mcm²/mcm³, average distance between hollows 1.8-15.0 mcm, and average volumetric chord 1.0-15.0 mcm.

EFFECT: increased regenerative activity and simplified use.

7 cl, 7 dwg, 1 tbl, 6 ex

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RU 2 257 232 C1

Authors

D'Jakov V.E.

Perova M.D.

Kortunov Ju.A.

Fedotova L.M.

Dates

2005-07-27—Published

2003-11-21—Filed