No one wants to have crooked teeth. But, not everyone is willing to undergo the necessary orthodontic treatment to a achieve healthy, straight smile. For adults especially, reluctance can disappear with clear acrylic aligners from Invisalign dentist, Dr. James Kalina in Mankato. Removable and comfortable, Invisalign aligners change smiles. But, don’t take our word for it. Here are answers to common questions about this inventive orthodontic treatment.