Dental Advice Today | Can a Temporary Crown Last a Year Temporary crowns often bring side effects like looseness, sensitivity, or cracks when worn too long. Using one for a year may risk tooth damage or gum irritation, leading to costly treatments later. Dental Advice Today gives you the facts about why temporary crowns aren’t meant for extended wear and what dangers you should know. We explain safer alternatives and expert tips to avoid complications. Visit our site now to learn how to protect your teeth.