Experienced Dr and friendly staff

Sunny Dental opened in 2004. You’ll find a great and friendly staff in a non-pretentious atmosphere. We’ve had the same staff for a long time, and offer quality dental work in a warm and family-friendly environment.

Clients love Dr. Castro, and our skilled hygienist Yvonne. Our front desk knows insurance very well, and is happy to help you with any issues. We inform our clients of appointments, provide reviews, and send you a thank letter after every appointment.

Our clients told us that they feel special and very welcome when they come to our office. They find everyone friendly, which quickly puts them at ease, and the appointments are quick, with a focus on overall health.


Dr. Miguel A. Castro opened Sunny Dental back in 2004 in Brentwood California. Since then he and his staff have been taking care of many patients. Dr. Miguel A. Castro, DDS, has been in dentistry for more than 20  years and has been serving the Brentwood community for more than 15 years.

Miguel Castro
Dentist with wide experience in Cosmetic dentistry


Our office is fully equipped with the most high end technology available in the field of dentistry.

Here is a list of the technologies available on our facilities:

Digital X-rays
Digital Radiography reduces radiation by 90%

Computerized software
Explain each and every dental procedure

Intra Oral Camera
Highest level of dental photography

Track Light Monitor
Enhances patient experience and improves efficiency and case acceptance.


While our staff is well prepared and practice safety cares for Covid-19, please let us know if you have any symptoms. Your safety and our team safety is number one priority for us. Having said that, we are always been very careful and follow the safety rules. All equipment get sterilized after each use and staff wear mask and gowns all the time changing their mask and gloves for every patient.

Our Vision

We at Sunny Dental continually update ourselves regarding the best and most current materials and technology available in dentistry and infection control.
Our vision is to provide our patients with a best dental experience that will promote a lifelong relationship built on trust, confidence, quality of work, and exceptional patient care. It is our vision to strive to remove barriers that seem to get in the way when it comes to a patient’s ability to maintain a healthy smile.


Proudly serving the Brentwood area for over 15 years

We offer a full range of services, from teeth whitening to root canals, dental implants and oral surgery — all tailored to meet the individual needs of each patient.