Pulp reactions in human teeth capped with self-etching or total-etching adhesive systems.

Area of Science:

• Dental Materials Science
• Biocompatibility Studies
• Pulp Biology

Background:

• Restorative dental procedures can impact the dentin-pulp complex.
• Adhesive systems are crucial in modern dentistry, influencing pulpal responses.
• Understanding the biocompatibility of different adhesive systems is essential for clinical success.

Purpose of the Study:

• To evaluate pulpal alterations using immunochemistry, morphology, and morphometry.
• To compare the effects of self-etching and total-etching adhesive systems on human dental pulps.
• To assess the biocompatibility of these adhesive systems when applied directly to dentin.

Main Methods:

• Thirty human third molars were restored with either Clearfil or Scotchbond adhesive systems.
• Teeth were extracted at 7, 30, or 60 days post-restoration.
• Pulpal tissues were analyzed histopathologically and immunochemically for specific cytokines (IFN-gamma, TNF-alpha, iNOS).

Main Results:

• Increased fibrous connective tissue density and capillary area were observed at 30 days in both groups.
• No significant differences in congestion, hemorrhage, calcification, or odontoblast swelling were noted between groups.
• Minimal and isolated positive immunoreactions for iNOS and IFN-gamma were detected; TNF-alpha was negative.

Conclusions:

• Neither self-etching nor total-etching adhesive systems induced significant inflammatory reactions or severe cytokine expression.
• The study suggests good biocompatibility of both adhesive systems when in direct contact with dentin.
• These findings support the safe use of these materials in direct pulp capping scenarios.