Downloadable eBooks For more information about treatment options for kids, teens or adults, please refer to our free downloadable eBooks below. Kids & orthodontics eBook Everything you need to know about orthodontic treatment for your family. Adults & orthodontics eBook Everyone wants to have a beautiful, confident smile – no matter their age. A guide to clear aligner treatment eBook Everything you need to know about clear aligner treatments, such as Invisalign®.