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PubMed2002

Analysis of pulpal reactions to restorative procedures, materials, pulp capping, and future therapies.

Every year, despite the effectiveness of preventive dentistry and dental health care, 290 million fillings are placed each year in the United States; two-thirds of these involve the replacement of failed restorations. Improvements in the success of restorative treatments may be possible if caries management strategies, selection of restorative materials, and their proper use to avoid post-operative complications were investigated from a biological perspective. Consequently, this review will examine pulp injury and healing reactions to different restorative variables. The application of tissue engineering approaches to restorative dentistry will require the transplantation, replacement, or regeneration of cells, and/or stimulation of mineralized tissue formation. This might solve major dental problems, by remineralizing caries lesions, vaccinating against caries and oral diseases, and restoring injured or replacing lost teeth. However, until these therapies can be introduced clinically, the avoidance of post-operative complications with conventional therapies requires attention to numerous aspects of treatment highlighted in this review.

Bacterial Vaccines↗
PubMed2000

Pulp response to direct capping with an adhesive system.

PURPOSE: To evaluate the pulp response following direct pulp capping with an adhesive system (Prime & Bond 2.0 - PB 2.0) and a zinc-oxide eugenol cement (ZOE) on pulp exposures in rat molar teeth. MATERIALS AND METHODS: Forty-eight Class I cavities were prepared on the occlusal surface of molar teeth of rats (Rattus Norvegicus, Holtzman). Pulp exposures performed on the cavity floor were capped either with the adhesive system P&B 2.0 or ZOE. After 7, 15, 30, and 60 days, the specimens were processed through H & E and Brown & Brenn staining techniques. RESULTS: Both pulp capping materials allowed pulp repair, characterized by reorganization of a new odontoblast cell layer underlying the dentin bridge formation. However, P&B 2.0 promoted a large zone of cell-rich fibrodentin matrix deposition between the pulp capping material and the dentin bridge, which was deposited far from the pulp exposure site. On the other hand, pulps capped with ZOE showed dentin bridging immediately subjacent to the pulp capping material. In those samples in which microleakage occurred between dental material and cavity walls there was a persistent inflammatory reaction and lack of complete pulp repair.

Animals↗