Success rates for two different types of post-and-cores

Area of Science:

• Restorative Dentistry
• Endodontics
• Dental Materials

Background:

• Partially prefabricated post-and-core systems are widely used for restoring endodontically treated teeth.
• Evaluating the long-term clinical success and potential complications of these systems is essential for evidence-based practice.

Purpose of the Study:

• To assess the clinical success and survival rates of two different partially prefabricated post-and-core systems (Permador and Radix) after crown placement.
• To identify factors influencing the success or failure of these post-and-core systems.

Main Methods:

• A follow-up study evaluated 237 Permador and 49 Radix posts clinically and radiologically.
• Restorations were in situ for an average of 3.9 years (Permador) and 2.3 years (Radix).
• Evaluated parameters included root canal filling quality, post orientation, post length relative to root length, and complications like root perforation.

Main Results:

• Post position was centric in 78.0%, eccentric in 19.5%, with 2.5% root perforations.
• The post length met the minimal crown length requirement in 85% of cases.
• Overall, 6.3% of teeth required extraction, with significant correlations between insertion period, bone loss, canal filling length, post position, and tooth loss.

Conclusions:

• The long-term success of partially prefabricated post-and-core systems is influenced by multiple factors, including proper post placement and root canal filling quality.
• While generally successful, complications such as root perforation and tooth loss can occur, highlighting the importance of meticulous technique.