Retention of parallel-sided titanium posts cemented with six luting agents: an in vitro study

Area of Science:

• Dental Materials Science
• Biomaterials Engineering
• Restorative Dentistry

Background:

• Prefabricated titanium posts are widely used in endodontically treated teeth.
• Effective luting agents are essential for the long-term success and retention of these posts.
• Various luting systems exist, each with different compositions and bonding mechanisms.

Purpose of the Study:

• To compare the in vitro effectiveness of six different luting systems.
• To evaluate the retention of prefabricated titanium posts cemented with these systems.

Main Methods:

• 120 single-rooted teeth were endodontically treated and sectioned.
• Prefabricated titanium posts were cemented using two resin-ionomer hybrid cements, two resin cements, one glass ionomer cement, and zinc-phosphate cement (control).
• Tensile bond strength was assessed using an Instron universal testing machine.

Main Results:

• Advance cement with Prime and Bond systems demonstrated statistically superior post retention (P < .05).
• Cement It with Bond It and Permalute with Permalute Primers A and B showed significantly greater retention than Ketac Cem, Resinomer with One-Step, and zinc-phosphate cement (P < .05).
• No significant difference in retention was found among Ketac Cem, Resinomer with One-Step, and zinc-phosphate cement.

Conclusions:

• Advance cement with Prime and Bond is the most retentive luting system among those tested for prefabricated titanium posts.
• Certain resin-based and resin-ionomer systems offer improved retention over traditional glass ionomer and zinc-phosphate cements.
• Material selection significantly impacts the retentive stability of posts in dental restorations.