Dentures can dramatically improve your quality of life, restoring your ability to eat, speak, and smile with confidence. But like natural teeth, dentures require proper care and attention to last. While most wearers know to clean their dentures daily, many are unaware of common habits that can actually shorten the lifespan of their dentures or lead to oral health issues. Here are 5 harmful habits you should avoid if you want to keep your dentures (and your mouth) in top condition.