For effective plaque removal, what characteristic should the surface of an interim fixed restoration possess?

For effective plaque removal, the surface of an interim fixed restoration should possess a smooth surface. A smooth surface minimizes the areas where plaque can accumulate, making it easier for patients to maintain oral hygiene through regular brushing. This characteristic is vital in preventing periodontal disease and caries, as rough or textured surfaces can trap food particles and plaque, leading to greater biofilm formation.

A smooth surface also contributes to patient comfort, as it reduces irritation to the surrounding soft tissues. Additionally, a well-polished interim restoration is less likely to stain or accumulate calculus over time, helping to ensure a healthier oral environment during the interim period before the final restoration is placed. In summary, a smooth surface promotes both hygiene and comfort, making it the ideal choice for interim fixed restorations.