Flexible post in a dental post and core system

Details Flexible post in a dental post and core system Flexible post in a dental post and core system

A - Human Necessities

61

C

A61C 5/08 (2006.01) A61C 13/30 (2006.01)

Patent

CA 2291139

This invention is a flexible post (401) for endodontic or reconstructive tooth therapy having a modulus of elasticity which is less than or equal to that of dentin of 18 GPa. The present invention is preferably made of medical grade optical glass fibers (402) or fiberglass fibers. The micro-filaments of the present invention are treated to impart flexibility to each fiber. The fibers are twisted by twisting on other non-axial arrangements of the fibers to impart strength to the unit post. This allows it to function as a permanent post in a tooth. The dental post is flexible and the post conforms to the natural curved contours of a root canal to reduce machining of the tooth and mechanical weakening of the tooth structure.

Cette invention a trait à un tenon souple (401) pour thérapie endodontique ou reconstructrice dont le coefficient d'élasticité est inférieur ou égal à celui de la dentine, à savoir 18 Gpa. Le système de l'invention est, de préférence, réalisé au moyen de fibres de verre optique (402) ou de fibres à base de fibre de verre, de qualité médicale. Les microfilaments de l'invention subissent un traitement propre à conférer à chaque fibre une certaine souplesse. Les fibres sont torsadées par torsion des agencements non axiaux de fibres les uns sur les autres afin de conférer de la résistance au tenon. Cette opération permet mettre au point un tenon pour installation à demeure dans la dent. Ce tenon est souple et épouse les contours naturels en courbe du canal radiculaire afin de réduire les travaux d'usinage de la dent et l'affaiblissement mécanique de la structure de la dent.

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