Candy canes are one of the worst foods for teeth. Candy canes, are 100% sugar. Sugar can lead to cavities, tooth decay and loss. Candy canes are also one of the hardest treats to eat. One of the types of foods you should stay away from if you have braces (during orthodontic treatment) are hard foods and candies and candy canes fit the criteria perfectly.
Candy canes also take a while to eat, which give the sugar a reason to linger around longer and form into bacteria, leading to cavities.