This technique is used when most of the decay has been removed from a deep cavity, but some softened dentin remains over the pulp chamber that if removed would expose the pulp and trigger irreversible pulpitis.The dentist intentions is to leave the softened (but not much infected) dentin in place, and uses a layer of protective temporary material which promotes remineralization of the softened dentin over the pulp and the laying down of new layers of tertiary dentin in the pulp chamber. A temporary filling is used to keep the material in place, and about 6 months later, the cavity is re-opened and hopefully there is now enough sound dentin over the pulp (a “dentin bridge”) that any residual softened dentin can be removed and a permanent filling can be placed.

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