Quality Care from a Cosmetic Dentist You Can Trust

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We Exceed Expectations

Hear from satisfied patients and see the results a skilled dentist can provide.

We Give You a Reason to Smile

Welcome to the office of Andrew G. Mortensen, DDS! Our dentist, Dr. Mortensen, has proudly served Costa Mesa, Huntington Beach, Fountain Valley, CA, and the greater Orange County area for decades. At our dental practice, we emphasize cosmetic dentistry and are dedicated to designing dazzling, healthy smiles for our patients. We combine state-of-the-art technology, modern materials, and expertise to improve your smile easily, comfortably, and often, permanently. You'll be amazed at what our dentist can do.

Whether you are a new patient in need of a subtle change or a full smile makeover, Dr. Mortensen can provide aesthetically pleasing solutions that contribute to strong oral health.

The team at Andrew G. Mortensen, DDS
Our team of compassionate dental professionals

What Sets Andrew G. Mortensen, DDS, Apart?


Dr. Mortensen has over 30 years of experience as a dentist. He has been voted the best dentist in Orange County and is an Opencare Patients' Choice Winner. He received training at the prestigious Las Vegas Institute and is a member of several professional organizations.


Many patients avoid trips to the dentist because they are afraid of dental treatment. However, regular dental attention is necessary for maintaining good oral and overall health. To ensure you remain comfortable during each visit, Dr. Mortensen provides multiple sedation options.

Versatile Solutions

Dr. Mortensen can provide excellent general, cosmetic, and restorative dental care at his office in Fountain Valley, CA. Whatever your unique dental needs and goals are, our dentist can address them in one place and help you achieve excellent and lasting oral health.

Advanced Technology

Our dentist utilizes advanced technology like cone beam 3-D digital scanners and digital x-rays. These technologies are better for your health than older imaging methods as they expose you to less radiation, and they provide more detailed images to precisely address your needs.

Welcome to Our Practice

As a Las Vegas Institute-trained dentist with an accreditation from the American Academy of Cosmetic Dentistry, you can trust Dr. Mortensen to provide superlative care and beautiful results. With more than 30 years of experience to call upon, he can handle all of your needs.

"Top-Notch Professional"


Delia Arceo


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It is such a pleasure visiting this dental place of Andrew Mortensen. He has a great personnel working for him. Such a friendly and a very welcoming staff. Everyone is working together to make their clients at ease and feel very welcomed. I recommend this place  with other people I know to come and visit and interact with the whole group. Great job for all the things you do !!

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Michael Owens


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Dr Mortensen has been my Dentist for 20 plus years...top notch professional!! Highly recommended....always does a great job and loves his patients and what he does!! A true ARTIST!

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Meet Dr. Mortensen Excellence in Dentistry

A talented and skilled dentist, Andrew G. Mortensen, DDS, has been creating beautiful smiles in Huntington Beach, Fountain Valley, CA, and greater Orange County for more than 30 years. As your dentist, he can develop a personalized treatment plan to enable you to reach your cosmetic goals while optimizing your health. Dr. Mortensen is an accredited member of several renowned organizations, including:

  • American Academy of Cosmetic Dentistry
  • American Dental Association
  • California Dental Association
  • Orange County Dental Society

He also trained at the Las Vegas Institute, which is widely recognized as one of the very best programs in the industry. This unique background allows Dr. Mortensen to offer the most advanced techniques and treatment plans available in modern dentistry.

Dr. Mortensen receiving an award.
Dr. Mortensen is an award-winning dentist

Awards and Recognitions

AAD Accredited Member logo
ADA logo
ICOI logo
LVI Trained logo
Best Dentist Orange County (2010) logo
Opencare Patientsʼ Choice Winner (2015) logo
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Schedule Your Visit Today A Dentist Committed to Providing Beautiful Smiles

At the practice of Andrew G. Mortensen, DDS, we believe our combination of skills, amenities, and expertise lets us provide care that leads to optimal oral and overall health. Whatever your needs, we can help.

Come see why we are the favorite choice of Huntington Beach and Fountain Valley, CA, for cosmetic dental treatment and more. Book an appointment today by contacting us online or call:

(714) 964-4183

The office of Andrew G. Mortensen, DDS

"Wonderful People"


Bernard Wiesel


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Outstanding dental health care---the best---gladly recommend Dr. Mortensen; have been with him and his staff for years. Bernard Wiesel

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Vera Ockwig


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The staff and Dr. Mortensen are just wonderful people. For the amount of work I've done on my first visit was amazing.

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Featured Procedures


Imperfections on your teeth such as cracks, chips, and stubborn discoloration that does not respond to professional whitening treatments can give your smile an unhealthy appearance. Crafted of advanced dental ceramics that mimic the light-reflecting properties of natural tooth enamel, porcelain veneers offer a versatile, durable, and easy to maintain option to maximize the appearance of your smile. Veneers also provide the advantage of incredible results on a significantly reduced timeline, especially when compared to other cosmetic dentistry options.

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Dental Implants

When you lose a tooth, the lack of dental roots causes your jawbone to begin deteriorating. As this atrophy progresses, it can cause the surrounding teeth to shift which in turn, can affect your appearance and lead to further tooth loss. Implants are the only treatment in modern dentistry that can stop jaw bone atrophy. The titanium posts act like bionic tooth roots, effectively ending further atrophy while providing unparalleled support for a crown, bridge, or denture. Restore the form and function to your smile and rejuvenate your oral health with this advanced treatment.

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Sedation Dentistry

Our team knows that a visit to the dentist can cause feelings of anxiety, but putting off much-needed treatment can make a minor issue become a significant oral health problem. We understand that some patients may feel too uneasy to sit through dental treatment, so we offer a variety of sedation options to help you relax, including oral conscious sedation. If you are afraid of the dentist, Dr. Mortensen and his staff in Fountain Valley, CA, will make every effort to put you at ease and ensure you are calm throughout your visit. We are here to help provide you with a healthy smile.

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Full Mouth Reconstruction

Patients who have put off important treatment for years may think there is little that can be done to restore their oral health, but Dr. Mortensen can provide nearly anyone with a picture-perfect smile. At our cosmetic dentistry office, Dr. Mortensen can design a custom treatment plan involving multiple procedures to meet your unique needs. During your initial consultation, our dentist will review your oral health and provide you with a number of options to achieve the results you desire. Thanks to full mouth reconstructions, we have the potential to change your life for the better.

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Teeth Whitening

If there is one universal goal of everyone who visits our dentist office it is to achieve whiter teeth. Patients often cite the coloration of their teeth as a source of embarrassment. Fortunately, Dr. Mortensen can provide you with in-office and take-home treatments at our Fountain Valley office. Our in-office treatments can provide stunning results in a single treatment. Professional take-home treatments can be administered at your convenience and leave you with a smile shades whiter than over-the-counter alternatives. With the help of professional teeth whitening, we can whiten your teeth and give you a smile you are proud to share with the world.

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Dental Crowns

Decayed, damaged, or broken teeth can be painful, making chewing and speaking difficult. A compromised smile can also cause feelings of self-consciousness. Crafted from advanced ceramic engineered to withstand normal biting forces while providing natural-looking results, crowns are custom-designed based on the unique needs and appearance of your smile. A crown placed over an affected tooth following treatment for trauma or decay can protect it from further damage. By restoring a tooth with a crown, you can often avoid the need for extraction. With proper care, these restorations can last for years.

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Dental Bridges

Missing a number of teeth due to gum disease, untreated cavities, or trauma can cause a host of issues, from trouble eating and speaking to embarrassment over your smile. A dental bridge is a custom-crafted prosthetic designed to fill the gap in your smile, providing lasting comfort and a radiant smile. Constructed of the same state-of-the-art ceramics as crowns and veneers, modern bridges offer beautiful aesthetic results. Enjoy the benefits of a complete smile with a custom bridge that will allow you to chew, speak, and smile with confidence once again.

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"Friendly Service"


Drew Niven


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I've been going to here pretty much my whole life my dad started going to him first and then I started going. His staff is excellent he's always up on the latest technology we love actually going to the dentist

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Jan Stachowiak


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I've been going to Dr. Mortensen for over 25 years. I've always been extremely satisfied with with the friendly service, the personal care and the quality of his work. I would highly recommend him!

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Compassionate Care for All of Your Dental Needs

Dr. Mortensen is proud to offer a wide array of general and cosmetic procedures, including porcelain veneers, teeth whitening, dental bonding, and TMJ disorder treatment. Our team understands that not everyone looks forward to a visit to the dentist, so we can calm your fears and help you relax during your treatment thanks to sedation dentistry. This allows us to provide a full range of restorative procedures with virtually no pain. In addition, our Fountain Valley, CA, office (just up the road from Huntington Beach) features all the latest dental technology that makes visits to the dentist easier and more relaxing. 

Whether you simply need a set of x-rays or a full mouth restoration, we can help. Our dentist serves the friendly communities of Huntington Beach, Fountain Valley, and the greater Orange County area. Regardless of your oral health needs, Dr. Mortensen's practice is a premier source for cosmetic, implant, sedation, and general dentistry.

Your oral health and the state of your smile is of the utmost importance to us. Schedule a consultation or appointment today by contacting us online or call:

(714) 964-4183

Andrew G. Mortensen, DDS
We can transform your smile!

Transformative Results With Dental Veneers

before veneers
After veneers
Andrew G. Mortensen, DDS

Andrew G. Mortensen, DDS

Dr. Andrew Mortensen is a top-rated dentist with training from the world-famous Las Vegas Institute. His exceptional care and expertise have earned him hundreds of 5-star reviews, and he is an accredited member of the:

  • American Academy of Cosmetic Dentistry
  • American Dental Association
  • California Dental Association
  • Orange County Dental Society 

Ready to schedule a consultation at our Fountain Valley dental practice? Request an appointment online or call us at (714) 964-4183.

Contact Us Today

Reach out to us today to set up an appointment and strengthen your oral health.
"I am proud to have served patients in our community. Through continuing education and state-of-the-art equipment, we are able to offer you and your family the high level of care you're looking for." Andrew G. Mortensen, D.D.S.

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Google map image of our location in 18837 Brookhurst St Ste 109 Fountain Valley, CA

Fountain Valley Office

18837 Brookhurst St
Ste 109
Fountain Valley, CA 92708

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(714) 964-4183 Send a message