Which characteristic can facilitate plaque removal in interim fixed restorations?

Accurate marginal fit is a crucial characteristic in interim fixed restorations that facilitates plaque removal. An accurate marginal fit means that the restoration closely adapts to the prepared tooth structure, creating minimal gaps where plaque can accumulate. When the margins of a restoration are well-contoured and properly aligned with the tooth surface, it reduces the risk of biofilm formation and helps maintain better oral hygiene. This seamless interface also minimizes the chance for food particles and debris to get trapped, promoting easier cleaning.

In contrast, if the marginal fit is poor, it can lead to areas where plaque can build up, leading to potential complications such as caries or periodontal disease. Hence, ensuring that the margins of interim restorations fit well is vital for facilitating plaque removal and supporting the overall health of the surrounding gingival tissues.