Tooth pivot with directional distribution of the stress...

Details Tooth pivot with directional distribution of the stress... Tooth pivot with directional distribution of the stress...

A - Human Necessities

61

C

A61C 13/30 (2006.01)

Patent

CA 2214104

The present invention relates to a tooth pivot made of composite material and to a process for fabricating said pivot. The pivot is characterized in that it is comprised of a central core (3), made of at least one bunch of fibres (5), for example glass fibres, the core being wrapped by a sheath (7) comprised of at least one layer of oriented, isotropic or non isotropic fibres (8a, 8b, 8c), the fibres (5) of the central core (3) and the fibres of the sheath (7) being embedded in a curable resin, the fibres (8a, 8b, 8c) of the sheath (7) being oriented in a given angle with respect to the longitudinal axis (yy') of the pivot (1), so as to adjust to desired respective values the longitudinal and transverse traction resistance of the pivot (1).

La présente invention concerne un tenon dentaire en matériau composite et un procédé de fabrication de celui-ci. Ce tenon est caractérisé en ce qu'il est constitué d'une âme centrale (3), faite d'au moins un faisceau de fibres (5), telles que par exemple des fibres de verre, qui est entourée d'une gaine (7) constituée d'au moins une couche de fibres (8a, 8b, 8c) orientées, isotropes ou non, les fibres (5) de l'âme centrale (3) et celles de la gaine (7) étant noyées dans une résine durcissable, les fibres (8a, 8b, 8c) de la gaine (7) étant orientées d'un angle donné par rapport à l'axe longitudinal (y, y') du tenon (1), de façon à ajuster à des valeurs respectives souhaitées la résistance à la traction longitudinale et transversale du tenon (1).

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