What effect can excessive polishing have on the teeth?

Excessive polishing can lead to enamel wear and increased sensitivity because of the abrasive nature of the polishing materials used. While polishing can help remove surface stains and plaque, overdoing it can strip away the protective outer layer of enamel. Enamel is already a thin layer compared to the underlying dentin, so when it is worn down through excessive polishing, it can expose more sensitive areas of the teeth. This results in an increased likelihood of temperature sensitivity and even pain when consuming hot or cold food and beverages. Furthermore, with reduced enamel, teeth may also appear more yellow, as the underlying dentin is more visible, leading to altered aesthetic perception.

In contrast, the other options do not accurately reflect the consequences of excessive polishing. For instance, while careful polishing may contribute to the appearance of white teeth, it does not enhance tooth color permanently. Similarly, enamel degradation does not strengthen the enamel or promote faster tooth growth, as human teeth do not grow in that manner once they are fully developed. Therefore, excessive polishing primarily results in enamel erosion and heightened sensitivity.