The Influence of Liners on the Pulp Inflammation

Area of Science:

• Dental Materials Science
• Histology
• Animal Research

Background:

• Investigated the application of dental liners and composites in experimental animal cavities.
• Focused on rabbit (Oryctolagus cuniculus) models for dental pulp response evaluation.

Purpose of the Study:

• To evaluate the dental pulp response of rabbits to three different dental liners: Calcimol LC, ANA Liner, and Fuji II LC Improved.
• Assessed the biocompatibility and inflammatory potential of these liners when used with Ceram-X mono dental composite.

Main Methods:

• Class V cavities prepared on maxillary central incisors and lower incisors of rabbits.
• Teeth restored with Calcimol LC, ANA Liner, or Fuji II LC Improved, alongside Ceram-X mono dental composite.
• Histological analysis performed after a five-day observation period to assess pulp inflammation and odontoblastic layer integrity.

Main Results:

• No distortion of the odontoblastic layer structure or continuity was observed with the tested liners.
• Mild hyperemia and vasodilation were noted in one tooth per tested material group.
• No significant inflammatory reactions were registered, indicating favorable pulp response.

Conclusions:

• The tested dental liners (Calcimol LC, ANA Liner, Fuji II LC Improved) do not compromise the integrity of the odontoblastic layer when applied over thin dentin.
• These materials exhibit favorable biocompatibility with rabbit dental pulp, showing minimal signs of inflammation.