Rio Mar Dental
Arianna Martinez, DDS:
Practice Profile Page


Rio Mar Dental
Arianna G. Martinez, DDS
Fullerton, CA













A list of major dental treatments which I offer my patients:

Dental cleaning

White fillings


Inlays & onlays


Pediatric dental care

Clear aligners

Porcelain veneers

Teeth whitening

Dentures & partials

Root canal treatment

Tooth extraction

Sedation dentistry

TMJ treatment

Sleep apnea therapy

Dental implants


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 10:00 am to 6:00 pm

Tuesday: 10:00 am to 6:00 pm

Wednesday: 10:00 am to 6:00 pm

Thursday: 10:00 am to 6:00 pm

Friday: 10:00 am to 5:00 pm

Saturday: 8:00 am to 3:00 pm (by appointment only)

Sunday: Closed



Check out some of my treatment photos:



Check out what some of our happy patients are saying about us:

Melvin K. from Fullerton, CA (Source: Yelp)


I have been going to Rio Mar Dental for the past 18 months and find that it is the best dental office that I have ever been too.  The staff is fantastic and each one of them go out of the way to make you feel very at ease.  They are all very professional and knowledgeable.  Additionally, because most of us have a fear of dentist but when you have Arianna Martinez as your dentist she makes you feel at home and very relaxed.  She is extremely knowledgeable and explains in detail each procedure in a way that you can understand.  Five (5) start are not enough for Rio Mar Dental!

Ash Nalbandyan (Source: Google)


This practice is amazing. I’m very anxious now a days when dealing with any medical situation, but the doctors at Rio Mar Dental were so welcoming , warm, professional, and relaxing. They helped my anxiety ten fold. My whole family now are regulars at Rio Mar Dental. I couldn’t even ask for a better dentist. Thank you both.

Yvonne Khoury (Source: Facebook)


This is the best Dental Office in OC. They speak both English and Spanish. They are accepting new patients. And they do accept Medi-Cal. I love this place because of the care that is provided by both Dr. Rios and Dr. Martinez. The reason I needed to make an appointment was because my teeth and gums have become more sensitive over the last couple years. So, I called my insurance and asked if they would find me a Dentist that was accepting new patients. They suggested Rio Mar D…

Danny S. from Carmichael, CA (Source: Yelp)


I’ve been to a lot of dentists  but this one was definitely the most professional and outstanding dental office. They’re staff is super nice and helpful. I’ve been searching for years to clean my teeth from fluoride and this is the only dental office that was able to do it and had the equipment to do it. They did a fantastic job, and now my teeth are sparkling  white. I definitely recommend this dental office to anyone that has fluoride in their teeth or any other procedure. Thank you guys for everything you’ve done for me 🙂

LB. Hernandez (Source: Google)


I have a 7 yr old daughter that was terrified of the dentist, but now that has changed. All the staff here at Rio Mar made my daughter feel much better about dental visits. Also, the office is super clean, no long waits and awesome staff so friendly and professional. I will continue coming to Rio Mar not just for my daughters but also for me. Very satisfied

Nicole M. from Costa Mesa, CA (Source: Yelp)


My son and I needed dental work done but I get nervous because root canals can be painful and dental work makes me uncomfortable. I picked Rio Mar Dental after looking at reviews. My son had to get fillings and he felt so comfortable with the Dr Rios and he felt no pain not even the numbing shot. I got a root canal done and fell asleep. Really !!! They are amazing and the receptionist Monica is amazing so helpful and kind she always makes both of us feel welcome. I would recommend this office everyone. Thank you.

Krow P. from Brea, CA (Source: Yelp)


Dentists normally make me extremely nervous, but I felt comfortable and at ease at this office. Dr. Martinez is very friendly and likes to make sure I’m informed on what’s going on with my teeth. I appreciate how proficient and personable he is. His staff is professional and kind. They checked up on me in the waiting room and keep me informed on wait times which was nice.

Carolina Moura (Source: Google)


This dental practice has it all! They have the latest technology, the nicest staff, the most amazing dentists, they do almost every procedure in house rather than referring out (they even do implants and ortho!) and they see kids and adults! Love them!

Hosea Israel (Source: Google)


I have nothing but praises for Rio Del Mar Dental and Dr. Martinez. They are friendly and professional. They do a good job and inform you well on whatever issues you may have. I would recommend them to anyone.

Carolina M. from Capistrano Beach, CA (Source: Yelp)


Dr Martinez is simply incredible! My kids were nervous (so was I), but she was able to make us feel very comfortable almost immediately. Her staff was also really kind and helpful. I am so impressed with the quality of care and the time they take for each patient. I felt like they all went above and beyond for my family. I’m so grateful we were referred to this family friendly office, where they can actually take care of me and my kids. So happy.

Carol S. from San Francisco, CA (Source: Yelp)


This was one of the best experiences I’ve had at a dentist. From the first phone call through my 2 appointments, everything was wonderful. Really great people work here. They are friendly and professional. Dr. Rios replaced my crown that came off. I didn’t have to wait for a new one. Also because I have several health issues, he asked me to get an okay from my doctor before doing some other work. I appreciated thst he was  being careful for both of us. At the second appointment,  I also met Dr. Martinez. I though it was very nice that she introduced herself to me. Thank you to all for taking great care of me.

Avery Herrera (Source: Google)


All my children have seen Dr. Martinez and Dr Rios. My middle child used to freak out when going to dentist, however that all changed when we went to see Rio Mar dental. She was at ease and is happy to go to dentist. They are very friendly, professional, caring, honest, and best dentist we have ever had. We drive from Costa Mesa to see them because it’s totally worth it, and we’re loyal. I recommend them to anyone I know. Check them out!

Elizabeth J. from Fullerton, CA (Source: Yelp)


Well just came back from my second visit with Dr. Rios and I’ve never been more happy with my choice! A little background of myself to keep in mind, I’m disabled and use a powerchair. Let’s start with the office, the rooms are huge, clean, and handicapped. There equipment is up to date and high tech. Dr. Rios is understanding, friendly, and smart. The staff is super nice. Now for my visit, Dr. Rios took the time to hear about my disability, all the procedures that I’ve had, and made me feel comfortable during everything. He took it so far by doing the cleaning without getting off my wheelchair. All in all, I highly recommend coming to see him. Also his bilingual which is a plus in my book!

Leana E. from Corona, CA (Source: Yelp)


Wonderful staff. Waited under 10 minutes with an appointment to see Dr. Martinez @ 10:30AM on a Wednesday. After I was called in, I was sent to the x-ray room. The dental assistant was kind and conversational/easy to talk to. I came in for a cleaning and filling. Dr. Martinez is amazing in what she does. Her passion for her career shines through as she is always explaining every step, uses a gentle hand, and assures comfort. She always asked if I was ok every 10 minutes or so, which was so reassuring. I have honestly never felt this comfortable at a dental office before. The dentist is far from my favorite place and always shoots my anxiety through the roof. My previous one never explained what she was doing and would just do her job. Dr. Martinez showed me photos and explained what was going on with my teeth before proceeding, which is comforting because it sucks when you have to guess what they’re going to do and can’t talk with a bite block in your mouth lol.   I would recommend this dental office to anyone! They surely know what they are doing. Thank you Dr. Martinez! 🙂

Tamara Y. from South San Francisco, CA (Source: Yelp)


Dr. Martinez is the best! My daughter is very shy and nervous by nature and she loves going there, even after some some significant dental work. Same goes for myself. The staff are friendly and the office is kept very clean. They are honest and told me I didn’t need some dental work that another office had said I needed. You won’t regret switching dental offices to Rio Mar!

Elain Nermon (Source: Facebook)


I’ve had my previous dentist for almost ten years … I started going to Rio Mar Dental for the past few years and am so glad I switched doctors. They are gentle, informative, thorough and very professionally NICE! I get automated reminders of my appointment which is very helpful. Their state of the art equipment actually found some issues with my blood vessels which prompted me to see my medical doctor. As a result, we discovered an ascending aortic aneurysm which was taken care of. My latest appointment discovered an old root canal that needs to be redone … these are things you never think about and are thankful that these doctors are so thorough … I am very thankful for and to them … very helpful indeed!

Michael L. from Bellflower, CA (Source: Yelp)


I found Rio Mar Dental after having a horrible experience at a different dental office in my hometown of Bellflower that was recommended by 1-800 dentist.   In contrast, Rio Mar was a breath of fresh air all the way around. The x-rays we’re not painful or excessively uncomfortable. The Dr. who worked on me was very professional and informative, and worked very hard to make my filling procedure as pain free as possible.  This turned out to be kind of difficult because for some reason, the tooth nerve in question didn’t want to respond to the lidocaine, and I ended up getting about 5 shots to get adequately numb, but even then the nerve was sensitive. In response to this, she wisely figured out that she could just remove my broken filling by prying it out around the back side of my molar, and then she just had to do minimal drilling and replace the filling.  Genius!  I was pretty sore from all the shots, but that’s not her fault, I just have an unusual nerve connection somewhere so it’s tricky to numb that tooth. It ended up taking a couple of hours total for the x-rays, cleaning, and filling, but I am so happy to have that filling fixed and my teeth cleaned.  It had been about 8 years since I last went to the dentist, and the staff at Rio Mar didn’t guilt trip me or make me feel uncomfortable at all. In fact, its one of the best dentist experiences that I’ve ever had, and I HATE going to the dentist. Bottom line, if you’re looking for a great dentist, look no further.

Elain Nermon (Source: Google)


I have been going to Rio March dental now for several years. They are always so courteous and nice when you arrive and there really isn’t any waiting time. They are tender and gentle and thorough as well as educating in the care of your teeth. Even when I had a toothache, I elected to only go to see them and they worked me right in. I’ve had nothing but pleasant experiences with them and would recommend them to anybody. I drive from Tustin Ranch to their office, and I can see other dentists in my area.

Elain Nermon (Source: Google)


Visited RioMar Dental again for my semi-annual teeth cleaning — as always, polite, attentive and friendly when I arrived and they were prepared to cover the COVID disclosures and requirements. Everything was clean, clean, clean so I had no worries. Great experience, going back again in six months and my teeth are smooth, shining, clean, no cavities! and … I got a goodie bag on the way out … to help keep my teeth that way … yay

Elain N. from San Francisco, CA (Source: Yelp)


I’ve had my previous dentist for almost ten years … I started going to Rio Mar Dental for the past few years and am so glad I switched doctors/dentists. They are honest, gentle, informative, thorough and very professionally NICE! I get automated reminders of my appointment which is very helpful. Their state of the art equipment actually found some issues with my blood vessels which prompted me to see my medical doctor. As a result, we discovered an ascending aortic aneurysm which was taken care of.  My latest appointment discovered an old root canal that needs to be redone … these are things you never think about and are thankful that these doctors are so thorough … I am very thankful for and to them … very helpful indeed!

Jorge M. from Fullerton, CA (Source: Yelp)


My family and I have visited this office for over 4 years, my wife, my 3 children, and me. Since the first visit Dr. Martinez and Dr. Rios have treated us as friends. From a simle cleaning, braces to implants. They always explain to us in detail before starting, and during the procedure they always ask how we are doing. The fees are reasonable, all the staff is friendly, they have a start of the art equipment. We plan to keep going with RioMar. Thanks for all the help the excellent service.

Shane Van De Ven (Source: Facebook)


I had been going to my current dentist for years but was never really happy. I received a flyer for Rio Mar Dental and decided to give them a try. I’m glad I did as from the moment I arrived I had great service, expert advice with exceptional attention to detail. All the things my previous dentist was lacking. I cannot recommend Rio Mar Dental enough!

Anonymous (Source: Google)


The building is a bit hidden but the inside is new and actually spacious. I like how the dentists are friendly, the place is clean, and hi-tech equipments are used. I appreciate that they give you a pair of googles to wear so you don’t get splashed with water as well.

Yvonne K. (Source: Google)


This is the best Dental Office in OC. They speak both English and Spanish. They are accepting new patients. And they do accept Medi-Cal. I love this place because of the care that is provided by  Dr. Martinez. The reason I needed to make an appointment was because my teeth and gums have become more sensitive over the last couple years. So, I called my insurance and asked if they would find me a Dentist that was accepting new patients. They suggested Rio Mar Dental and got me in touch with them. The receptionist at Rio Mar got me an appointment within 2 days of making the call. I was very pleased that they were able to accommodate me in such a short amount of time with little notice from myself. It was very encouraging. Once we booked the appointment, they emailed me directions to their location and then sent me all of the forms that I would usually be required to fill out 15 minutes before the appointment. The forms were online; so, I didn’t have to print them out. I could just fill them out and my information would be saved. They have both English and Spanish forms. Because they emailed them to me before hand, I was able to just walk right in when it was time for my appointment. On the day of my appointment, I had trouble finding parking. However, there are a few small lots around the office that I found. I just parked in one of those. Their office is a small blue house with their name on the side. When I walked in, the place smelled clean and fresh. The front office (waiting room) was clean, comfortable, and has a play area for children. I waited for about 1-2 minutes after checking in and they were ready for me. I was impressed with how prepared they were and how brief my time in the waiting room was. I was taken to a room where a very kind technician took X-rays of my mouth and teeth. She was very gentle and sweet. X-rays can be tough but she was very kind, patient, humble, and took her time. I can not stress how gentle she was. X-rays can be painful and frustrating because you have to shove this piece of plastic in various parts of your mouth. It can be very painful. But she was so gentle, patient, and kind. Then, my Dentist, Dr. Rios, came in and asked me about how my teeth were feeling. He was very prepared, knowledgeable, and trustworthy. Also, he was very kind and listened to me. He gave really positive and reassuring advice. He was good at explaining why my sensitivity was occurring and how to prevent it. I was so impressed with how quickly he could tell that I may have been flossing too hard. So, he had me floss as he watched. Then, he showed me how to do it. He was an excellent teacher. Once, that was done, he cleaned my teeth. I’ve never had a dentist clean my teeth before, usually the dental hygienist does it. I was psyched that my dentist was going to clean my teeth. He was very gentle and cleaning was very quick. my teeth looked so nice when he was done. I was so happy. Additionally, I had come in to inquire about teeth whitening. He said that I wouldn’t need that because my teeth were fine and it would be painful. I’ve seen a few dentist before Dr. Rios and they all told me I needed to buy all of these things or my teeth were going become damaged. Dr. Rios flat out told me my teeth were fine and suggested that whitening would be unnecessary. I was so impressed. I definitely feel like Dr. Rios is trustworthy and honest. He won’t try to sell you something you don’t need. He is an honest Dentist. I think everyone should go to Rio Mar Dental. I cannot recommend this Dental Office enough. They are THE BEST dentists in OC.

Jonathan H. from Fullerton, CA (Source: Yelp)


Dr. Martinez and Staff are amazing! Very friendly and comfortable environment. I had a horrible experience at another office and came to Rio Mar Dental to fix the damage that was done by someone else. Dr. Martinez, got me in the very next day after I called, had me out of pain and fixed up right away!
I am so thankful to have found them!

Jennifer S. from Fullerton, CA (Source: Yelp)


Best dentist I have ever gone to the dentists  and the staff are the so kind and caring and they know what they are doing. I have been in multiple times with my daughter and for myself and my husband we all have had more than one visit and we love going there. My daughter had been traumatized by her previous dentist and was very afraid to go but ever since we started going here she has been doing much better about it thanks to them she is the scared anymore!

Noelia M. from Fullerton, CA (Source: Yelp)


Loved their professional service. They use the most up to date technology and my dental work was done free of pain. Awesome experience, especially since everything was explained by the dentist not the assistant or a manager. Not the typical sales pitch ! Thank you.
Recomiendo ampliamente el servicio tan profesional y amable que yo recibí. Muy satisfactoria mi experiencia con mi dentista! Gracias!

Sandra J. D. from Glendora, CA (Source: Yelp)


Been coming to Rio Mar since I moved to Fullerton about 4 years ago. There is never a long wait when I come visit. My whole family comes here, including my 2 small children. They are very gentle and I’ve never had a bad experience with pain. I had a wisdom tooth pulled here that was already fully out and the procedure went great. Very minimal pain with the healing process. They also referred me out to get the other two wisdoma out which required surgery but thankfully were covered through my insurance. Definitely recommend this Dental office for adults and kids.

Giuliana Molinari (Source: Google)


Outstanding service!! Pleasantly surprised with the professionalism, friendliness and high level of customer service displayed by all the staff at Rio Mar Dental. We called for a last minute appointment and were able to be seen right away. The staff is very welcoming and eager to address any concerns of ours. Doctor explained everything in detail to my mom and was very clear to understand. We were referred out to a specialist but will be back as soon as that issue is handled to take care of the routine work. Highly reccomend them.

R. Flores (Source: Google)


I want to thank Drs. Martinez & Rios for getting my teeth back on track. I arrived with a badly infected cracked molar, which had to be removed. I was uninsured for many years, and my teeth have suffered for it. Diabetes and high blood pressure haven’t helped. Drs. Martinez & Rios made the insurance process easy, and clearly explained which procedures would be covered. A deep cleaning and a filling to repair a cavity have set me in the right direction, and I am grateful. Thank you!

Marcie E. from Placentia, CA (Source: Yelp)


Super friendly staff! I haven’t had a check up in awhile I’m always trying to avoid the dentist but now that I found this place I will not be afraid! Def recommend this dentist office.

Sam T. from Fullerton, CA (Source: Yelp)


The staff is super friendly. They accept MediCare and were genuinely wonderful to work with. Our whole family of five switched over to Rio Mar and couldn’t be happier. They don’t over schedule so we got in on time. They explain everything and even made my somewhat nervous wife comfortable. The facility is modern, up to date and very clean. I hesitated to leave a yelp review because I didn’t want it to become too popular but everyone needs a family friendly dentist.

Sue Brekenfeld (Source: Facebook)


Where do I start? My husband went in during this coronavirus crisis. Both dentists were there, keeping the office open for emergencies. God bless them. Warm, professional couple who call you by name and efficiently diagnose your pain. We would recommend this office to everyone. Office is clean, smells good, music is fab, prices are reasonable. This should be your dentist!

Jesse N. from Tustin, CA (Source: Yelp)


I have to say that this is one of the best dental offices in Orange County. The staff is very knowledgeable, courteous and professional. My wife and I are patients at this location and could not be happier. Both of the dentists at this location are truly amazing and we will be continuing to visit this office for all of our dental needs. Thank you again for doing such an amazing job!


Dr. Arianna G. Martinez and Dr. Jose A. Rios Loaiza practice dentistry together as a husband and wife team. They both graduated from the University of La Salle in Leon, Guanajuato. Certified through the Western Regional Examination Board at the University of Southern California and Loma Linda University, they have been practicing locally since 2010 until they decided to open their private practice in Fullerton in January of 2015. Together they treat comprehensive cases by combining their skills, including endodontics, implants, and orthodontics. Their focus is family dental care-including treatment of pediatric patients with oral conscious sedation. When they are not at the office, they enjoy spending time with their three children, Rebekah, Lola, and Valentino, travelling to new places and exploring the outdoors. Dr. Rios grew up in Mexico and moved to California with his wife since 2010, he spends his free time hiking and mountain-biking the trails of southern California, gardening, and reading up on the latest tech gadgets or cars. Dr. Martinez grew up locally in Tustin, California, enjoys cooking, travelling, interior home decor, and doing arts and crafts with her kids. Dr. Rios and Dr. Martinez also enjoy going on "foodie adventures" and wine-tasting together.