$59 for Cleaning, Exam & X-rays! Book online today | SiennaModernDentistry.com

Live. Laugh. Smile.

We are committed to helping you look, feel and smile your best.

Office Hours

Office Hours

Mon 8:00 AM - 6:00 PM

Tues 8:00 AM - 6:00 PM

Wed 8:00 AM - 6:00 PM

Thurs 8:00 AM - 6:00 PM

Fri 8:00 AM - 3:00 PM

Sat Closed

Sun Closed

Dentist serving the Missouri City, Dewalt and Trammels area. *Saturday by appointment only. Ask about our specialty services and complementary orthodontic consultations!


Stop on By

on the southwest corner of Hwy 6 & Sienna Pkwy, in the Sienna Plantation Shopping Center, near the HEB

Sienna Modern Dentistry and Orthodontics store front thumb

Cleaning, Exam & Digital X-Rays*


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Single-Visit Crowns

CEREC® crowns, inlays and onlays.
Ready in a single visit.


We pride ourselves on our service.

We use advanced proven technology to keep your smile looking the best! Modern dental technology like Digital X-Rays and CEREC® CAD/CAM single-visit crowns allow care that's faster, less invasive and more efficient than ever before.

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Welcome to Sienna Modern Dentistry and Orthodontics

Sienna Modern Dentistry and Orthodontics in Missouri City, TX makes your smile a priority and looks forward to serving your needs. Dr. Andy Cao and our entire team are dedicated to providing you with outstanding care. We offer options to serve all of your dental needs in Missouri City, Sienna Plantation, Dewalt, Trammels, Teal Run, Riverstone, Lake Olympia, and Quail Valley. These include general dentistry, cosmetic dentistry, orthdontics, endontdontics, periodontics, and oral surgery—all under the same roof. We offer modern techniques including CEREC single-visit crowns, Digital X-rays, an intraoral camera, digital records, professional teeth whitening, lumineers, porcelain veneers, tooth bonding, white fillings, crowns, and implants. Sienna Modern Dentistry and Orthodontics accepts many insurance plans and provides flexible payment options. We believe in supporting our community and provide monthly promotions to give back. Additionally, our team proudly serves the community by participating in Smile Generation Serve Days, where community members who would not otherwise have access to dental care are provided with free dental treatment. Additionally, our very own Dr. Cao “Donates a Smile" each year. At Sienna Modern Dentistry and Orthodontics, part of serving our patients means providing information to help make informed decisions about your oral health needs. We hope this website is a valuable resource to you. Please feel free to contact us if you have any questions or would like to schedule a dental appointment. We look forward to serving you!