What is considered a complication in dental restorations that can lead to patient complaints?

The identification of a deep amalgam filling as a complication in dental restorations is relevant because it can lead to multiple issues that may cause patient discomfort or further complications. When an amalgam filling is placed too deeply, it may affect the pulp of the tooth, leading to postoperative pain, sensitivity to temperature, and potentially requiring additional treatment. This depth can also increase the risk of tooth fracture if the restoration does not adequately support the tooth structure.

In contrast, while incorrect shade matching can affect the aesthetic outcome and lead to patient dissatisfaction, it typically does not cause physical discomfort. Similarly, using too much bonding material can affect the integrity and durability of the restoration but is less likely to immediately lead to patient complaints compared to a deep amalgam filling. Poor surface polishing is essential for ensuring a smooth, comfortable finish that can prevent plaque accumulation and facilitate hygiene, but it is less directly linked to acute patient complaints compared to the potential for pain or sensitivity associated with an overly deep filling.