Partial dentin caries excavator

A - Human Necessities – 61 – C

Patent

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A61C 3/02 (2006.01)

Patent

CA 2438918

A dental but for use in repair of a carious lesion has a working surface including cutting elements which deflect or abrade upon encountering material having a hardness at or above a preselected hardness, wherein said preselected hardness is below the hardness of normal dentin and is generally below a hardness corresponding to the lower limit of hardness of pre-carious dentin to be retained in painless procedures.

L'invention concerne une fraise dentaire destinée à réparer des lésions carieuses. Cette fraise comporte une surface de travail pourvue d'éléments tranchants qui font dévier ou abrasent un matériau rencontré qui présente une dureté correspondant à une dureté prédéterminée ou située au-dessus de cette dernière, ladite dureté prédéterminée étant inférieure à la dureté de la dentine normale et généralement inférieure à une dureté correspondant à la limite inférieure de dureté de la dentine pré-carieuse à établir pour réaliser des actes indolores.

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