Pulp responses to three dentine bonding agents in dogs' teeth

Area of Science:

• Dental Materials Science
• Restorative Dentistry
• Pulp Biology

Background:

• Dentine bonding agents are crucial for modern restorative dentistry.
• Understanding their biocompatibility and pulp response is essential for clinical success.
• Previous studies have shown varying degrees of pulp irritation with different agents.

Purpose of the Study:

• To evaluate and compare the pulp reactions to three dentine bonding agents: Scotchbond Dual Cure, Gluma, and Tenure.
• To assess the long-term effects (7, 30, and 90 days) of these agents on canine pulp tissue.
• To compare the experimental agents against a zinc oxide/eugenol cement control.

Main Methods:

• Cavities were prepared in adult dog teeth.
• Teeth were treated with Scotchbond Dual Cure, Gluma, Tenure, or zinc oxide/eugenol cement.
• Pulp tissue reactions were histologically evaluated at 7, 30, and 90 days post-treatment.

Main Results:

• Scotchbond Dual Cure exhibited a less severe pulp reaction compared to Gluma and Tenure.
• No severe pulp reactions were observed with any of the three bonding agents at the 90-day interval.
• Significant pulp recovery and the formation of a thick reparative dentine layer were noted for all tested bonding agents.

Conclusions:

• Scotchbond Dual Cure demonstrates favorable pulp biocompatibility among the tested dentine bonding agents.
• All evaluated dentine bonding agents (Scotchbond Dual Cure, Gluma, Tenure) promote pulp healing and reparative dentine formation over time.
• These findings support the use of these dentine bonding agents in clinical restorative procedures with minimal risk of severe pulp damage.