Retentive properties of threaded split-shaft posts with titanium-reinforced composite cement

Area of Science:

• Dental materials science
• Restorative dentistry
• Biomaterials engineering

Background:

• Post retention is critical for the longevity of dental restorations.
• Traditional cements like zinc phosphate have been widely used.
• Advancements in dental cements necessitate comparative studies for optimal clinical outcomes.

Purpose of the Study:

• To compare the retention of dental posts cemented with titanium-reinforced composite cement versus zinc phosphate cement.
• To evaluate the influence of post size and diameter on retention.
• To identify factors contributing to enhanced post retention.

Main Methods:

• Four groups of 10 samples each were prepared.
• Posts were cemented using either titanium-reinforced composite or zinc phosphate cement.
• Retention values were measured using a universal testing machine.
• Statistical analysis included two-way ANOVA and Newman-Keuls tests.

Main Results:

• Larger diameter posts cemented with titanium-reinforced composite cement exhibited superior retention compared to those cemented with zinc phosphate cement.
• A statistically significant increase in retention was observed for larger posts.
• Deeper dentinal channels and higher cohesive strength of the titanium-reinforced composite likely contributed to improved retention.

Conclusions:

• Titanium-reinforced composite cement provides enhanced retention for dental posts, particularly for larger diameters.
• The choice of cement and post diameter can significantly impact the success of dental restorations.
• Further research into biomaterials for improved post retention is warranted.