What is the primary advantage of using polycarboxylate temporary cement over eugenol?

The primary advantage of using polycarboxylate temporary cement over eugenol is its greater retention. Polycarboxylate cement forms a stronger bond with the tooth structure compared to eugenol, which enhances its ability to hold restorations securely in place. This higher retention is crucial in maintaining the integrity of the temporary restoration during the interim period before a permanent restoration is placed.

In contrast to eugenol, which offers some soothing properties for sensitive teeth but has a weaker bond and can sometimes lead to displacement of the temporary restoration, polycarboxylate cement provides improved mechanical strength. This characteristic makes it a preferred choice for situations where retention is a priority, especially in more challenging clinical scenarios where the temporary restoration needs to withstand occlusal forces and normal oral function.

While considerations such as cost, ease of application, and setting time are important, they do not surpass the significance of retention when it comes to the performance of temporary cement in clinical practice.