Have you ever hidden your smile, or even just your teeth, in photos or when laughing? Most people try to smile without covering their teeth. Many people don't realize that teeth can impact people in both positive and negative ways. As a dentist once told me, a smile is the first thing people notice, and it usually divides opinions; the person wearing the smile is often self-critical and embarrassed by their teeth. People often avoid showing their teeth and covering their mouths because of the link between self-image and teeth. This is why many associated practices of modern dentistry focus on more than just pain relief.