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Related Experiment Videos

Pulp response to direct capping with an adhesive system.

C A Costa1, A N Mesas, J Hebling

  • 1Department of Oral Pathology, School of Dentistry, University of Michigan, Ann Arbor 48109-1078, USA. hebcosta@umich.edu

American Journal of Dentistry
|January 5, 2002
PubMed
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Direct pulp capping with Prime & Bond 2.0 (PB 2.0) and zinc-oxide eugenol cement (ZOE) both facilitated pulp repair in rat molars. ZOE promoted dentin bridging closer to the pulp exposure site compared to PB 2.0.

Area of Science:

  • Dentistry
  • Biomaterials Science
  • Regenerative Medicine

Background:

  • Direct pulp capping is a dental procedure to preserve pulp vitality.
  • Assessing the biocompatibility and reparative potential of dental materials is crucial for successful pulp capping.
  • Adhesive systems and traditional cements are used for pulp capping, with varying clinical outcomes.

Purpose of the Study:

  • To compare the pulp response to direct pulp capping using an adhesive system, Prime & Bond 2.0 (PB 2.0), versus zinc-oxide eugenol cement (ZOE).
  • To evaluate dentin bridge formation and pulp repair following direct pulp capping in a rat molar model.

Main Methods:

  • Class I cavities were prepared in rat molar teeth, inducing pulp exposures.
  • Pulp exposures were treated with either PB 2.0 or ZOE.

Related Experiment Videos

  • Histological analysis using H & E and Brown & Brenn staining was performed at 7, 15, 30, and 60 days.

    • Main Results:

    • Both PB 2.0 and ZOE supported pulp repair, indicated by odontoblast layer reorganization and dentin bridge formation.
    • PB 2.0 resulted in fibrodentin deposition distant from the exposure site, while ZOE promoted dentin bridging directly beneath the capping material.
    • Microleakage at the material-cavity wall interface led to persistent inflammation and incomplete repair.

    Conclusions:

    • Both tested materials can promote pulp repair after direct pulp capping.
    • Zinc-oxide eugenol cement may offer an advantage by facilitating dentin bridging closer to the exposure site.
    • Preventing microleakage is critical for successful pulp repair and long-term outcomes in direct pulp capping procedures.