Trusted Lexington Orthodontics
We proudly serve orthodontic patients of all ages from Arlington and nearby communities, including Belmont, Lexington, and Winchester.
Phone:
(781) 645-7998Office Hours:
Monday: 8:30 am – 5:00 pm
Tuesday: 9:00 am – 5:00 pm
Wednesday: 9:00 am – 5:00 pm
Thursday: 9:00 am – 5:00 pm
Friday: 8:30 am – 5:00 pm
Saturday: 8:30 am – 4:00 pm
Sunday: Closed
Your Lexington Orthodontist

Dr. Yajun Cui, DMD, PhD, is a skilled orthodontic specialist who provides exceptional care for patients of all ages. With advanced training and a deep commitment to patient comfort, Dr. Cui combines proven orthodontic techniques with modern technology to create beautiful, confident smiles for families throughout Lexington and the surrounding area.
At Sweet Smiles Orthodontics, we are proud to serve the Lexington community with personalized, efficient, and compassionate orthodontic treatment. Dr. Cui tailors every plan to meet each patient’s needs, ensuring the best results in the shortest possible time.
Lexington Braces
Traditional braces remain one of the most trusted and effective ways to achieve a healthy, aligned smile. Using a system of brackets, wires, and elastics, braces gently move teeth into their ideal position over time. Lexington braces are a great choice for patients with more complex orthodontic issues, providing reliable results and often shorter treatment times.
At Sweet Smiles Orthodontics, we offer both metal and ceramic braces to match your lifestyle and aesthetic preferences. Whether for children, teens, or adults, braces remain a cost-effective and powerful option for creating lasting smiles.
Lexington Invisalign®
For patients who prefer a more discreet orthodontic experience, Lexington Invisalign® offers a modern alternative to traditional braces. This system uses clear, removable aligners to gradually straighten your teeth — without the look or feel of metal brackets.
Each set of aligners is custom-designed to fit comfortably and move your teeth step by step. To achieve optimal results, patients wear their aligners 20–22 hours a day and switch to a new set every 1–2 weeks, as directed by Dr. Cui.
Invisalign® is ideal for treating mild to moderate alignment concerns, including crowding, spacing, and bite irregularities. During your complimentary consultation, Dr. Cui will evaluate your smile and determine if Invisalign is right for you.
Lexington Orthodontics: The Right Treatment for Your Smile
At Sweet Smiles Orthodontics, we take a personalized approach to every smile. Dr. Cui designs each treatment plan based on your unique facial structure, tooth alignment, and aesthetic goals. Our welcoming office in Arlington, near Lexington, provides a comfortable, family-friendly environment where patients of all ages can feel confident in their care.
To learn more about Lexington orthodontics, contact Sweet Smiles Orthodontics today to schedule your free consultation — and take the first step toward the smile you’ve always wanted!


