When you go for a regular visit to the dental office, you may feel that your enamel is getting damaged during the plaque removal process. The scraping sound and buzzing sensation may cause you some discomfort, especially if you have sensitive teeth. However, this doesn’t mean that your enamel has been scraped off; it’s normal for your teeth to be sensitive to hot and cold foods. When your tongue touches the cleaned teeth, it may feel like the enamel is worn out, but it just means that the plaque is gone.