Dowel retention with glass-ionomer cement

Area of Science:

• Dental materials science
• Prosthodontics
• Biomaterials engineering

Background:

• Post-endodontic restorations require predictable retention.
• Glass-ionomer cements are used in dental restorations.
• The Whaledent Parapost system is a common choice for post placement.

Purpose of the Study:

• To evaluate the retentive capacity of the Whaledent Parapost system with ASPA cement.
• To determine the influence of post length, diameter, and pretreatment on retention.
• To compare ASPA cement retention with other luting agents.

Main Methods:

• Investigated retentive forces of the Whaledent Parapost system with ASPA cement.
• Varied post lengths and diameters.
• Assessed the impact of medication and citric acid pretreatment on retention.

Main Results:

• Embedment depth into dentin was the primary factor affecting post retention.
• No significant difference in retention was found between medicated and unmedicated teeth.
• ASPA cement showed no retention advantage over zinc phosphate, carboxylate, or epoxy resin cements.

Conclusions:

• Post embedment depth is critical for Whaledent Parapost retention.
• Medication and citric acid pretreatment did not significantly alter retention.
• ASPA glass-ionomer cement provides no superior retention compared to traditional cements for this post system.