You see the advice everywhere to avoid sticky and hard foods when you have a dental crown. When it's just one crown, you can chew these foods on the other side of your mouth, but if you have crowns on both sides, do you really need to stop eating these foods altogether?
You do have very good reason to be cautious about what you eat when you have dental crowns. The advice is often very general, and of course there are different levels of "sticky," for example, when describing foods. What you really want to avoid are foods that require you to use a lot of force to chew them because it's that force that could affect the crowns. Mildly sticky or firm food is usually fine. There's a big difference between peanut butter and very stiff caramel that doesn't let you open your jaw that easily.
Temporary Crowns Aren't as Strong
First, if the crown you have is temporary, then you do have to be extremely careful. These crowns are not as strong as permanent crowns, so foods that aren't necessarily very hard could crack the crown's surface. You don't want to have to use much pressure to bite through anything. The adhesive is not strong at all because that crown is meant to be removed. So, don't chew caramels or anything like that unless you want to risk pulling off the temporary crown.
Permanent Crowns Aren't Invincible
Once you have the permanent crown, things are a little different. The permanent crown is stronger and the adhesive or dental cement is very strong. However, the crown is still not invincible. Very hard foods, ones you really have bite down on hard, can still cause the crown to break. If you have crowns on both sides of your mouth, you'll either have to stop eating those foods (no more chewing ice cubes) or do something to soften them. Cooking them, dunking them (for crackers, etc.), or cutting them up could all work.
Over Time, Even Great Dental Cement Can Weaken
At first, the dental cement used to hold the crown on is very strong. But over time, especially years, that cement can weaken. If you chew on something very sticky that requires a good amount of force to open your jaws, that could pull the crown off. Most of the very sticky food tends to be along the lines of candy, which you really don't need to eat. If you still want to though, make the pieces smaller or warm them up so they are less sticky.
You can discuss this in more detail with your dentist. Remember that many people have dental crowns, and many people have enjoyable daily diets where they don't really have to eliminate foods. Your dentist can give you suggestions for making hard or sticky foods easier to eat and less dangerous for the dental crown.
To learn more, contact a dental clinic like Rabel Family Dentistry.