Welcome to the practice of Lauren Cai, D.D.S., M.S., where we strive to provide the highest quality of orthodontic care to our patients in and around the Longview WA, Vancouver WA and Portland, OR areas. We know what a significant difference in health and self-esteem a beautiful smile can make, which is why we are dedicated to giving each of our patients the beautiful, straight smile they deserve! Invisalign® Invisalign® is a series of clear, plastic aligners that straighten your teeth without the usual noticeable, bulky materials involved with traditional braces. No one will know you’re improving your smile unless you tell them! Lingual Braces Worried about the look of traditional braces? Worry no more! Lingual braces are custom-designed to attach to the back of your teeth so that you can get a straight smile without the “metal mouth” appearance! Thank you for visiting Dr. Cai’s office, where we provide braces for all ages!