Miller & Simarro Dental Care

Photo by Tony Kukulich. The staff at Miller & Simarro Dental Care specializes in assisting patients of all ages, making them feel welcome and comfortable.

A healthy body starts with a healthy mouth, and taking care of your smile at home and regularly visiting the dentist can lead to better overall health, as well as a beautiful smile.

Miller & Simarro Dental Care in Antioch helps its patients stay healthy by providing state-of-the-art, high-quality dental care in a relaxed, pressure-free environment. 

“Preventative care is the biggest thing people can do to maintain their oral health, by getting their teeth cleaned and examined every six months,” said Mark W. Miller, DDS.

The dental practice is comprised of three dentists – Miller, who has more than 41 years of experience treating patients; Ryan Simarro, DMD; and Nathan Simarro, DDS, all of whom grew up in Antioch.

As children, twin brothers Ryan and Nathan were patients of Miller, and when Ryan found out he was looking for a business partner, he didn’t hesitate to join the practice in 2013. Nathan recently signed on with the practice in 2017, after working for a nonprofit organization in Ventura for several years. 

“There’s something special about being able to help the members in your community where you were born and raised,” said Nathan. “Having a personal history and connection with your patients is great.”

Miller & Simarro Dental Care specializes in cosmetic dentistry and general dentistry, including Lumineers, dental veneers, teeth whitening, Invisalign, composite fillings, all-on-four dentures, permanent dental bridges, dental implant restorations and dental crowns.

Their office is modern, warm and inviting, with a friendly staff that makes their patients feel right at home. State-of-the-art equipment, including digital X-rays and intraoral cameras, makes once-uncomfortable procedures quick and easy.

“They are always up to date with technological advances and are very well organized,” said Pittsburg resident Steve Nicolas, who has been seeing Miller since 1997. “My front teeth used to be jagged and had a gap in the center. Dr. Miller gave me a million-dollar smile. I get compliments all the time.”

Other patients are drawn to the practice for their customer service and comforts. “They are so great at putting you at ease,” said Antioch resident Ruth Buchanan. “Your comfort comes first. They are the best dentists I have ever gone to.”

Taking care of patients’ dental needs and building lifelong friendships is what Miller has enjoyed most about his career.  

“I have been blessed to help many people in the community and save their teeth for their lifetime,” he said.

A key component to having a smile that lasts a lifetime is knowing what to avoid that could cause harm to your teeth. 

“One of the most common things I see that people overlook regarding their dental care is the habitual use of high sugar or high acid-content foods,” said Ryan. “People who are drinking these sugar-filled energy drinks or have habits of using breath mints, candy, gum or chewing lemons are destroying their enamel and getting cavities. It’s sad to see – especially in people who are so young – root canals, because they are not practicing good habits.”

Gum disease affects more than your dental health. It has been linked to serious chronic conditions, such as dementia, Alzheimer’s disease, oral and neck cancer, heart disease, diabetes, pancreatic and liver cancer, pregnancy complications, osteopenia and arthritis.  

Avoiding things that are harmful to your teeth, getting regular dental cleaning and exams and addressing dental issues can not only keep your smile beautiful, but also help maintain your overall health.

Miller & Simarro Dental Care is located at 5201 Deer Valley Road, Suite 3B, in Antioch. For more information, visit or call 925-754-6020.