We offer personalized care to our patients, and our primary concern is your health and comfort!

We cater therapy for each individual. Come and get the treatment you deserve.

Sleep Well, Live Better.

Dr. Lee treats patients with Obstructive Sleep Apnea, Myofascial Pain, and TMJ Dysfunction. He is a Diplomate of the American Board of Dental Sleep Medicine and the American Sleeping and Breathing Academy.

Over time the profession has expanded in scientific knowledge and inclusion of new innovative treatments. There are now over 200 appliance designs. Our background with TMJ Dysfunction allows the devices we design to work harmoniously with your joint and are fabricated as comfortable as possible.

We are in-network providers with many medical insurance plans and can assist you by lowering your out of pocket expenses. Everyone has specific needs. We will work with you to determine the most comfortable, affordable, and appropriate appliance for your particular case.

Dr. Lee works closely with local sleep physicians, otolaryngologists (ENT), pulmonologists, and neurologists to cater to the best sleep apnea and TMJ treatment for his patients.

We are contracted with the following medical insurances and most PPO medical plans.

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CALL US FOR A CONSULTATION. 949-448-7667

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Oral Devices

MANDIBULAR REPOSITIONING DEVICE

Stop Snoring Today!

There are more than 200 devices to choose from. During your consultation, our doctors will choose what is right for you.

WE CATER THERAPY FOR EACH INDIVIDUAL,
COME AND GET THE TREATMENT YOU DESERVE.

Dr. Lee treats patients with Obstructive Sleep Apnea, Myofascial Pain, and TMJ Dysfunction. He holds a Diplomate of the American Board of Dental Sleep Medicine and the American Sleeping and Breathing Academy.

We're On Your Team.

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What our patients are saying...

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"The front staffs and Dr Gannon assistant are very great with excellent attitude. Dr. Lee himself is taking his time to evaluate my TMJ jaws pain with outstanding explanations/advise and attitude. I am giving the highest 5 stars from 1 to 5 for my last visit on May 20 2024 S. Alavi"

"April is very knowledgeable and professional, Elyse is amazing and Dr Gannon is a great dentist. Overall, great dentist experience, excellent care and of course April is very knowledgeable and helpful. Elyse is my favorite dentist hygienist . Thank you."

"Dr. Lee was professional, answered all my questions, and explained everything in detail. He made me feel confident being in his care!! ==================================================== I visited Dr. Lee on 5/8/2024, for my annual check-up. Dr. Lee asked several questions to determine the discom…"

"I feel good now."

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"Excellent experience in all ways, thorough, professional and explains well. I recommend Dr. Lee to everyone."

"Great staff, knowledgeable and helpful!"

"Recently I had a crown that leaked and Dr. Lee and his staff were great at addressing the issue and replacing the cracked crown and were very patient with me. I appreciate their care. I recommend this office to my friends and family constantly."

"Dr. Lee was very informative and compassionate about my medical issues. He was able to offer me suggestions to improve my health beyond explaining the dental appliance I initially went to him for. His staff is friendly, compassionate and amazingly patient with everyone: both in person n on the pho…"

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"He really knows his stuff. Since i'm such a baby when it comes to pain, he was more than patient explaining how to use the oral device."

"Very friendly staff and Dr. Lee is very informative."

"So friendly and so thorough! I got every question answered and the next steps were made very clear. I really appreciated everyone in that office and will recommend them to anyone I know who needs services that Dr G Lee provides! 😊😊"

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"I've been coming here for over 7 years. Always a pleasure, as much as a gentle dental appointment can be, of course! Dr. Gannon is very professional knowledgeable, thorough, patient, explains things what my treatment plans are and allows time for me to ask questions. He helps me with my sleep apne…"

"Very professional and attention to detail"

"Everyone was super friendly and helpful! Doctor seemed to know exactly what he was doing and was more than willing to patiently explain things to me. Highly recommended!"

"Their teeth-whitening process worked out beautifully!It made me smile confidently and was quick and efficient.They stand out for their all-inclusive approach to dental care, which includes digital cleanings and X-rays."

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"It was great meeting the dr. He explained everything that he would be doing. I really liked him"

"Their teeth-whitening process worked out beautifully! It made me smile confidently and was quick and efficient. They stand out for their all-inclusive approach to dental care, which includes digital cleanings and X-rays!!!"

"I feel like a completely different person after coming to this clinic. I've suffered with dental phobia for a long time. I felt more at ease because of the dentist's calming and consoling demeanor as well as the warmth and kindness of the staff. I was quite comfortable during my appointment, and I …"

"In this case, getting dental crowns changes everything! My teeth and my confidence were both restored by correctness and painstaking attention to detail!"

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"Dr Lee continues to provide outstanding dental care for my wife and me. I would highly recommend him for anyone looking for a dentist"

"Great group! Dr. Lee takes the time to explain everything and answer all your questions. Staff is welcoming and friendly. No high pressure tactics. Very happy with them."

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"Here, receiving dental crowns is a game-changer! My confidence was restored along with my teeth thanks to accuracy and meticulous attention to detail!"

"I've had teeth sensitivity issues for years, but now that I've gone to this facility for teeth whitening, my issues are resolved! The outcomes were astounding, and the procedure worked well. I'm overjoyed that my teeth are stronger and less sensitive now."

"The office staff was very personable kind helpful, efficient, and thorough. I felt well cared for and my needs were addressed. Would highly recommend this office. I went to address my sleep apnea and seeking a mouthpiece to hopefully solve the problem instead of a CPAP machine. Dr Gannom was very i…"

"Dr Lee was excellent at taking good care of me!I would highly recommend him."

"Their teeth-whitening procedure was fantastic! Quick, effective, and left me with a confident smile. The comprehensive approach to dental care, including digital X-rays and cleanings, sets them apart!"

"After coming to this clinic, I feel like a completely different person. I have battled dental anxiety for years. The staff was warm and welcoming (which made me feel relaxed), and the dentist was incredibly calming and reassuring. I felt completely at ease during my appointment, and I can't wait to…"

"Since I have been getting regular dental cleanings from Gannon Lee DDS, I can genuinely state that my teeth have never felt or looked better. The hygienists are gentle and thorough, and the dentist takes the time to explain everything clearly."

"Getting dental crowns is a game-changer here!! Precision and attention to detail restored not just my teeth but also my confidence!!"

"Words cannot describe how great of an experience it was but I’ll try. From the empathy and understanding shown by April up front, to Cami’s kindness and diligence in getting me taken care of, every moment made me feel comfortable and at home. The Dr was extremely professional and communicated excep…"

"It was my first visit with Dr Lee for help with my TMJ and he did not disappoint! Dr Lee is not only very nice but so patient and informative! I am looking forward to his help with the affects of TMJ!"

"I see Dr. Gannon Lee for my sleep apnea condition. He specializes in developing mouth pieces which help to minimize sleep apnea and snoring. Since wearing this mouth piece, I am sleeping better and have been able to transition off my CP device. I am very happy with his expertise and his concern for…"

"Appointment went very well. Professional staff and Dr. Lee answered all my questions. Will definitely be going back. Was back again today 1/03/2024 and again the visit was very professional and painless. I would recommend Dr. Lee and his staff very high. They continue to do excellent dental work..…"

"Professional care and service."

"Friendly, prompt staff. Courteous. Informational. Great patient care. Love the place. Going for the last 5-6 years."

"Dr Gannon explained very well about oral device and sleep Apnea, he is charming. The staff is friendly, and the office is clean.."

"This is the best place to take care of your teeth. Dr Lee is super professional and the staff is very nice and helpful."

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"I had a fantastic experience at my first visit to Dr. Lee's office. Everyone was extremely nice. I felt that I received excellent care from the front office person, dentist, and the hygienist. I highly recommend Dr. Gannon Lee's dental office. Thank you again for such a wonderful, positive, relax…"

"Great service. First class treatment. Very gentle."

"I had a terrific experience with Dr.Lee. He took the time to explain everything to me. He asked me questions so that he could understand how to help me. I will definitely go back for further treatment!"

"Have just switched to Dr Lee from a dentist I had been going to for 20 years! Their customer service, dental services and communications are top notch!"

"Best team ever. I have been seeing Dr. Lee for many years and he and his staff are wonderful."

"My experience at the office of Dr. Lee Gannon DDS was a very positive one. Both April and Caysi on his staff were friendly as they welcomed me. Dr. Gannon was patient and easy to talk to as he explained his suggestions for my problem which is sleep apnea. Dr. Gannon was recommended to me by a frien…"

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"i've trusted my dental care to dr. lee and his staff for five years now. the level of care is extremely high, and everyone who works there is happy to be there. i actually LOOK FORWARD to going to the dentist, if you can believe that."

"Dr. Lee and his staff focus on the patient experience, from the front desk welcome to the clear explanation of treatment options. Dr. Lee was amiable, thorough, and responsive to questions I had about the dental options for the treatment of sleep apnea. Professional and personable practice. I would…"

"Outstanding results"

"This place is great. The staff is friendly and professional and they always do great work. Five stars!"

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"I hate going to the dentist. However, my visit with doctor Gannon, was very pleasant. He was very nice, polite, and took his time to explained everything in detailed. I really appreciate that in a doctor. Also, his staff is very friendly, and helpful."

"Today was my first time being in a dental office in over a year and was hesitant to even get a cleaning. The staff were open to answer any questions I had and checked on me many times throughout the procedure. I was very relieved that the staff was super friendly and made me feel as comfortable as …"

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"Staff and the doctor are very friendly and professional. Things were explained thoroughly about the apnea mouth pieces."

"I find Dr Lee's approach very complete and friendly."

"Dr. Lee and his staff are great. They are on time and very thorough. Dr. Lee explains things as he goes along and makes sure everything is right before you leave."

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"I love Dr Gannon Lee and his office staff. They are very patient and helpful. I never have to wait long, and it's a surprisingly pleasant experience every time I come here Dr Lee is helping me with a sleeping device for sleep apnea. I highly recommend Dr Lee."

"Everyone in this office is very welcoming and attentive. Dr. Lee is great. Parking is crazy at 4:00."

"It was my first visit and I was really impressed. He took his time to explain what needed to be done. I was actually surprised to see a welcome sign. He’s definitely seeing me again and will bring my husband on his next cleaning. April, you are awesome!! Thanks"

"Best dentist I have every had and I’m 65. Just had a cap redone (original done by another dentist) and came out great."

"Dr. Lee and his staff easily earn an A+. I would not hesitate to recommend Dr. Lee to anyone in need of general or cosmetic dentistry."

"I am thrilled to have found Dr. Lee who has special training in Sleep dentistry. I have used a CPAP and BiPAP machine for years. I have recently been fitted with retainers that have dropped my apnea episodes from 58 down to 10 per night! He wants to drop that even lower! he and his staff provide ou…"

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"Dr. Lee and his team provide very thorough care. Everyone in this dental office is prompt and professional and I feel like I’m in good hands with them."

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"Staff friendly, efficient and knowledgeable. No waiting, nice offices. Dr Lee friendly, very well prepared (,has reviewed file), asks and answers questions easily. Exceptionally knowledgeable about apnea issues and use of device he made for me. Mouthpiece fit well, adjusted as needed."

"The entire experience with Dr. Lee and his staff is five stars of excellence."

"Everyone was very pleasant, attentive, and helpful. They actually made the appointment fun! Dr Gannon Lee was very informative and patient. He asked many pertinent questions and took more than enough time to explain what they were doing and answered all my questions. I would highly recommend this p…"

"The staff was friendly and helpful. Dr. Lee explained everything in detail to me. I was pleased with his professional performance as a dental specialist. Melissa Garner"

"Dr. Lee is super nice and a perfectionist. Even though I thought my tooth was good enough fit for my crown, he knew it wasn’t perfect so he kept working on it and it fit even better!"

"Excellent visit, as usual. Dr Lee and staff were always very pleasant, friendly, gracious and helpful. I highly recommend Dr. Gannon Lee and his practice to anybody needing his expertise as sleep apnea specialist."

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"Dr. Lee and his staff are fabulous! They really care about you and your health and make you feel comfortable. They don’t talk down to you, but are very helpful in explaining things. Since he took over the practice, they have made a lot of improvements and brought in state of the art equipment...X-…"

"Took time to explain the process. Worked efficiently with my HMO Health Plan."

"Knowledgeable, dedicated and attentive."

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"100% will go again👍"

"I was in for a cleaning. The hygienist is really top notch! Quick & painless."

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"Dr. Lee is knowledgeable, caring, compassionate and competent. He spends as much time as needed to listen and explain. Appointments go as scheduled. Staff are equally knowledgeable and helpful. I really recommend ROAR."

"Very professional people!!"

"This is the place to go 😁 Very clean Free valet parking as well as handicap and standard"

"Very profesional and knowledgeable team. Highly recommended"

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"Excellent dentist, very communicate as he explains everything and he listens!!@"

"Dr Lee and his staff were very friendly and helpful. He did a great job with my sleep apnea appliance. I am enjoying a better night's sleep already. I would highly recommend him to friends and family."

"All of the staff is so nice. Dr. Lee is very patient and explains each step."

"Marie was friendly, gentle, and thorough. I enjoy running my tongue over my teeth after they're cleaned."

"Great dentist and wonderful office staff!"

"Dr Lee is very patient and polite with his patients. Takes the time to listen carefully and make sure that they are at ease prior to treatment."

"Dr. Gannon Lee and his staff are just wonderful. I would highly recommend them. Dr. Lee is very caring and thorough. The dental hygienist, Elyse, is so considerate and kind I cannot say enough good things about her. 5 stars!"

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"Great Dr. Patient and Personal"

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"Dr. Lee has been diligent and comprehensive while attending to our families dental needs. He always takes the time to explain the necessary procedures and explain the need for the required remediation."

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"Very friendly staff! Made the usual scary dentist experience pleasant. Dr. Lee was super thorough in his exam and explanations and a great listener to all my concerns and questions. Expertise and kindness! Special thanks to Maryann, my teeth have never felt cleaner and thanks for all the great flos…"

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"Excellent"

"Great care and very solid team at Roar. Very happy with my results."

"I was so happy with my experience with Dr. Lee and his staff when they made an oral appliance for me to wear at night, I made an appointment and went in for routine care. I'm very glad I did. They took full x-rays, then Dr. Lee reviewed them. Next, he examined my mouth and under my tongue. He foun…"

"Great place. Dr. Lee is great."

"Over the past three years, I have suffered from sleep apnea. In spite of trying all kinds of masks, I was constantly at war with them. I felt as if I were suffocating. It wasn't until I discovered Dr. Gannon Lee and Roar Associates that I found help for my sleep apnea. As a result of his close coop…"

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"I have been to a lot of Dental Professionals and there’s no comparison with this office. The staff and Doctor Lee, are the best I’ve seen. Everyone is wonderful, compassionate and professional. I believe I have finally found a doctor that can help me!! Thank you Doctor Lee!"

"Friendly and efficient."

"Excellent, Friendly and Professional!!"

"I was referred to Dr. Lee for treatment of my TMJ and for an oral appliance to treat my sleep apnea. I was pleasantly surprised as I entered the office to find my name on a sign (first name/last initial) that welcomed me to their office. After interacting with the front office staff, nursing staff,…"

"Called yesterday and was able to be seen today. Again, excellent service, everything explained and all questions answered. Dr. Lee and staff do a great job."

"The entire staff at Gannon Lee DDS is FANTASTIC! I love the “fun spirit” of everyone at the practice! All members of the staff are incredibly professional, and Dr. Lee spends personal time with all of his patients."

"Dr. Gannon Lee and his staff are the best! He is a perfectionist and that means everything he does is excellent. I worked in the dental field in the past and I understand what a skilled dentist he is. We have recommended a dozen friends to him. They have all been very impressed with him and his …"

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"Highly recommend Dr. Lee for anybody looking for a dentist! The staff is professional and very friendly. The practice uses the latest tech for treatment."

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"Dr. Lee is very thorough, personable and genuinely cares about his patients. Had a temp crown done today and it went great. I have extreme TMJ pain and he was so patient with me when I needed to take breaks. Highly recommend."

"Dr. Lee is very knowledgable about sleep apnea."

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"A very good medical practice and well organized. Dr Lee is great everyone in the staff is."

"Dr Lee and his staff are so nice and professional. The hygienists are gentle and very skilled. I’ve been going to this office since it’s beginning and going to the dentist is always a pleasant experience. Highly recommend!"

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"I have been to a few dentists in my life and this office is by far the most wonderful office I’ve ever been to. The staff is genuinely kind and efficient. Dr. Lee is extremely knowledgeable and a great Dentist. I would highly recommend having Dr. Lee as your Dental professional and you will never r…"

"Super friendly, explained treatment well (went for TMJ) and didn’t push for invasive treatment"

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"Wonderful dentist, very caring and takes his time to hear your concerns. His office staff goes out of there way to help you with any questions."

"Excellent practice!! Clean and professional staff."

"Dr. Lee is extremely thorough and detail oriented. He explains every detail and adresses every concern. His knowledge of his field is beyond comprehension. I truly was impressed by his honesty regarding the end result at the outset."

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"Dr. Lee is a kind and very competent professional. I trust the dental decisions that he has made and discussed with me. His staff is very friendly and makes you feel at ease the moment you walk through the door of his office. I drive almost an hour to see him because he is that good and worth the t…"

"Knowledge and nice."

"Dr.Lee is amazing, and his entire staff as well. I am extremely satisfied with his work. I am definitely recommending Dr. Lee’s office."

"Dr Lee us knowledgeable and patient. I have been going to him for several years. Give him a try!"

"Dr. Lee and staff are friendly, professional, great care, and excellent service. Would highly recommend him to treat cases of mild sleep apnea."

"Takes his time and follows up. He has taken me in entire an appointment to make an adjustment on my crown . Very good staff and helpful with insurance."

"Always a good experience with my favorite dentist!"

"I was referred to Dr. Lee for treatment of my TMJ and for an oral appliance to treat my sleep apnea. I was pleasantly surprised as I entered the office to find my name on a sign (first name/last initial) that welcomed me to their office. After interacting with the front office staff, nursing staf…"

"Dr Gannon and his staff are wonderful. Dr. Gannon takes his time with you and explains everything in detail. Would highly recommend his medical expertise and services🙏 Thank you Rebecca Paris"

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"Dr. Lee is very knowledgeable, professional and kind. He thoroughly answered all of my questions. His staff is equally competent. His office has a pleasant atmosphere that has a calming effect to help put patients at ease. I highly recommend Dr. Lee for any dental procedures that may be required."

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"Very pleased office visit with the professional care. Very knowledgeable and cordial staff."

"Always on schedule, thorough and friendly."

"Friendly professional service for installing two implants. Feels natural no discomfort. Great to have a full mouth of teeth again. All 32."

"Dr. Lee is incredibly thorough and knowledgeable. He does an excellent job and ensures that his patients are informed and well cared for. He is an excellent dentist."

"Great experience all around. Dr. Lee is terrific in his work and chair-side manner. His staff is friendly and always makes you feel welcome. Their building recently was renovated, so everything feels modern and clean."

"Dr. Lee and his staff are highly trained professionals. I would not hesitate to recommend Dr. Lee to anyone."

"Dr. Lee and his team are amazing all around. The moment you walk into the office you are welcome by super friendly and warm group of front office staff. Dr. Lee is on top of his game and takes the time to explain how your treatment will help you. He has been helping me with orthotic therapy after s…"

"Always thorough clear and pleasant"

"I used to hate going to the dentist. The scraping and the picking and the pain. Dr. Lee and his skilled staff have gone out of their way to make my visits pain-free. They're communicative, friendly and they listen to you and do their best to make you feel comfortable."

"Dr Lee is knowledgeable and was thorough during the visit explaining everything regarding my tmj pain during a very anxious time for me. Haley his assistant is just a kind loving person with a calming demeanor. Appreciate them so much."

"Everyone was attentive and friendly. Dr. Lee was very informative during my procedure which let me know what he was doing during each step. It made me feel comfortable and less nervous."

"Dr. Lee and his team are amazing all around. The moment you walk into the office you are welcome by super friendly and warm group of front office staff. Dr. Lee is on top of his game and takes the time to explain how your treatment will help you. He has been helping me with orthotic therapy after s…"

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"Dr. Lee and his assistant are so caring and professional. I had 2 fillings done and Dr. Lee make sure I was comfortable and feeling no pain and explaining every step of the work he was doing. I highly recommend them."

"The most comprehensive dental exam I have ever received. Dr Lee is very knowledgeable and easy to work with. Staff is great as well. I would recommend them to everyone!!!"

"Dr. Lee and his entire staff are so welcoming and friendly. He is very thorough, patient and answers all your questions and/or concerns. I highly recommend him."

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"A caring staff and doctor completely professional and extremely knowledgeable. Dr.lee is an expert in his field and has done wonders for my sleep apnea. Thank you all from the bottom of my heart."

"Dr. Lee and his staff are very helpful and attentive. They made me feel comfortable. Dr. Lee made sure to explain all that he was doing. I had a good experience with both a cleaning and filling a cavity."

"Excellent service always at dr. GANNON LEE office I had an emergency situation with a 3part bridge cracked and fell out they immediately took extra time to prepare a temporary one and mold for new bridge without an appt. I love the staff and the service at this dentist office. Very professional …"

"This dentist and his office staff are truly remarkable. The quality of his work is beyond question and they stand behind everything they do. Can’t recommend they highly enough!"

"Very nice staff. The Dr is very good about explaining things. Very educated in his field. Overall , professional staff and friendly! Good place to go."

"Thank You for your help today. Appreciated a healthy conversation on the state of our country.Joseph"

"Highly recommend Dr. Gannon Lee and his very professional staff!"

"The doctor, the assistants and the front office are thorough, professional and friendly. I am a new patient and very happy and confident with my choice."

"Dr. Lee is the best. He was painless, considerate, informative, and the office is great and friendly."

"Very gentle and concerned about your health. Dr. Lee and his hygienist and the entire office works well together. I'm thoroughly pleased and confortable. All COVID precautions taken. The office feels so safe and clean."

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"Very helpful at explaining and very professional."

"Highly recommend Dr. Gannon Lee and his very professional staff!"

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"I was very please with the service they provide me ,the doctor and staff,were on time and very good at explaining to me what to do to make everything work better for me. Thank you very much!"

"Great staff, friendly and thorough. Always a positive experience."

"Went in for a filling and starting of crown. Dr. Lee is so patient with me and I appreciate it. Very aware of all COVID regulations. It’s like family when you go into the office by all staff."

"Dr. Lee and his staff are always professional, efficient and kind. I’d highly recommend them."

"Great staff, friendly and thorough. Always a positive experience."

"Excellent experience in all ways, thorough, professional and explains well. I recommend Dr. Lee to everyone."

"100% will go again👍"

"Dr Gannon and his staff are very professional, kind and compassionate. He does excellent work! I’ve been seeing him for over 8 months.. and there’s no other Dr would trust with my teeth. He provided me with a device for my obstructed airway. After wearing the new device at bedtime, I not only slept…"

"Great service. First class treatment. Very gentle."

"Dr. Lee and his staff are always professional, efficient and kind. I’d highly recommend them."

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"Yesterday I received the go-ahead to schedule a sleep study as a final test to determine whether my mouth piece will treat my sleep apnoea. I wish to thank Dr. Lee and his staff for their professionalism in getting this achieved so quickly. I look forward to the future thanks to this wonderful oppo…"

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"Very professional and knowledgeable team. Highly recommended"

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"Dr. Gannon's office staff are kind, professional and efficient. The hygienist did a great job cleaning my teeth."

"I had an urgent need to see Dr. Lee and he saw me immediately and answered all my questions. I was relieved that my condition was not as bad as I had thought. Thanks, Dr. Lee."

"I had my teeth cleaned yesterday and I'm very pleased with the new hygienist! She's very nice and professional. (I'm sorry that I don't remember her name.)"

"My most recent visit to Dr. Lee was a followup. He fit me for oral devices that replace using a c-pap machine for sleep apnea. He made a necessary minor adjustment that has worked very well for me. The doctor is very professional, explains the technology expertly and is very thorough. I would highl…"

"His staff are very attentive and he’s excellent in his skill! I recommend him all the time."

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"Prompt, courteous, gentle and efficient service. The office staff is delightful too!"

"Dr. Lee is an outstanding dentist. I would highly recommend him. He goes above and beyond for his patients and his office staff are very friendly and efficient."

"Dr. Lee is amazingly kind and gentle! He is hands-down one of the best medical doctors I have seen in my life. He noticed immediately that there was a problem with a root-canal and sent me with the appropriate doctor. He took the time to check every single little detail of my jaw and explained th…"

"Always feel Dr. Lee and his staff care about me as a person. I also am confident that Dr. Lee does not recommend treatment unless necessary."

"Very professional, explained everything that he was going to do and what would happen and what to expect. He made sure I was comfortable and explained all procedures."

"Very personable. Knowledgeable staff. On time with appointments.."

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"Prompt, courteous, gentle and efficient service. The office staff is delightful too!"

"Everyone at this practice was friendly, professional, and very conscientious. It was by far the best therapeutic experience I have had because each person in the practice was excellent at their jobs, knowledgeable, and compassionate. I highly recommend this practice!"

"Friendly caring staff and Dr."

"I had a very good experience. Dr. saved a tooth that had a very iffy prognosis. He was gentle and thorough. He also adjusted my bite that has been off for many years and it is much more comfortable. I am a new patient and the staff was very friendly and welcoming. Also, he made me a new sno…"

"Dr. Lee always takes the time to explain the process and actions he is taking WRT the dental appliance he provided."

"Dr. Lee is the most fantastic dentist ever encountered in my entire life, along with his fantastic staff! - ( ')>"

"Dr. Lee is the most outstanding dentist I've ever encountered in my entire life! - ( ')>"

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"Dr Lee had an appliance made for me to stop my snoring and interrupted sleep patterns, his chair side manner is great he absolutely knows his profession and when my Dentist retires Dr Lee will be my new Dentist, great experience and extremely thorough"

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"Dr Lee is amazingly kind and so gentle! Every single one of his wonderful staff are so very nice and always smiling. They never rush you and sincerely care enough to give you all the time you need!! Definitely recommend!!"

"Very professional and never ever over “prescribes” what you need done. Very realistic about what to do and the options available."

"Dr Lee had an appliance made for me to stop my snoring and interrupted sleep patterns, his chair side manner is great he absolutely knows his profession and when my Dentist retires Dr Lee will be my new Dentist, great experience and extremely thorough"

"This place is great, from the staff at the front reception to the back area and Doctor Lee, they are all very friendly, professional and explain things very clear. Keep up the great work!"

"Was in for periodic teeth cleaning with Sepi. She is the best! She has helped improve my gum health considerably in the last year or so with her comprehensive cleaning technique. Dr. Lee and his staff are the best!"

"Very informative and helpful"

"Less than 10 minutes wait. Staff friendly, knowledgeable. Dr. Lee very up to date, skilled and personable. Professional services very individualized to needs."

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"Easy to connect, friendly, knowledgeable. Thanks Doc!"

"I have been visiting Dr. Gannon Lee for a couple years now and he has always been friendly and professional. His staff is very personable and great. Dr. Lee built a special mouth guard for me that's noticeably helped me sleep. And his hygenist always helps me keep my teeth healthy/clean."

"Dr. Lee is a dental specialist I truly trust. He's also calm, patient and willing to answer questions."

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"some people might not like going to the dentist. These fun people make it so I look forward to going."

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"I have been visiting Dr. Gannon Lee for a couple years now and he has always been friendly and professional. His staff is very personable and great. Dr. Lee built a special mouth guard for me that's noticeably helped me sleep. And his hygenist always helps me keep my teeth healthy/clean."

"Wonderful doctor and staff. Very thorough, efficient and personable. I highly recommend this office."

"My husband and I really like Dr. Lee. By his verbal summary to me of the sleep study, I knew he had reviewed it completely; and he pointed out information of which I was not aware. I trust his recommendation and appreciated the adjustments he made to my oral appliance. He is a very sincere and know…"

"Chipped my front tooth at 2pm at work, called Dr. Lee's office, was at home smiling by 6pm! Dr. Lee did an amazing job--fast, friendly and affordable!"

"I am a new patient of Dr Lee. And even after just a few visits, I’ve found Dr Lee to be a wonderful professional. Last night was my first night with my new device and it fundamentally help me with my Obstructive Sleep Apnea issue. I slept WELL. And I was well rested and had an energy filled day I h…"

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"Everyone efficient, informative, and professional!"

"I feel very fortunate to have found Dr. Lee and Dr. Riley when I did. I had been CPAP dependant for my severe sleep apnea for years, but so disliked the machine for various reasons. After my consultation and the fabrication of a well-designed oral appliance, I no longer require the machine. And, th…"

"I love Dr. Riley! Such a nice, caring man. He's been treating me for my TMJ and has helped me tremendously. And the staff are amazing! Thank you!"

"I love Dr. Riley! Such a nice, caring man. He's been treating me for my TMJ and has helped me tremendously. And the staff are amazing! Thank you!"

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"The staff is very professional and friendly. Dr. Lee is great he explains each step of what he is doing."

"Both my husband and I received courteous and reassuring explanations of treatment plans. I was especially pleased with the skill and concern of Sepi who specializes in deep cleaning."

"Dr. Lee and his entire office staff were very helpful, friendly, professional, and knowledgeable. I feel confident that I will receive quality and ethical treatment."

"He's terrific and so is his staff; Sonia, Sepi, Shari and all of them."

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"Dr. Gannon Lee and his staff are all warm, friendly people who made my husband and I feel at ease as soon as we met them. They are patient and show a real concern about our comfort. Dr. Lee clearly explains prospective treatment with possible options and offers plenty of chances to ask questions."

"Excellent dentist in Orange county. Great service and friendly staff. I have been going there for over 10 years."

"Dr. Lee is always friendly and caring about his patient. I trust him 100% with his recommendations. Would recommend him unconditional to family and friends."

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"Dr. Lee and staff are professional, attentive, and available in an emergency. I appreciate the personal care they provide."

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"Dr. Lee took his time and patiently considered my dental history. He explained options in understandable terms. He's friendly, professional, and not trying to rush."

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"I had a wonderful experience at my appointment. The staff was very nice and Dr. Lee answered all of my questions and concerns very clearly."

"Dr. Lee and staff are friendly and professional. I am super happy with my new veneers and have received many compliments. I highly recommend Dr. Lee for cosmetic dentistry or any other dental needs."

"Very professional and thorough. I was impressed with the knowledge base of Dr. Lee and his empathic care."

"Dr Lee and his staff are awesome. They are all very caring and helpful and they always have your best interest when caring for you. Dr Lee is very gentle and does a really good job to make his patients comfortable and informed to each step he is taking."

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"Dr. Lee takes his time, explains what the required procedures and options are, and does great work. He is thorough and is concerned for his patients, doing whatever is necessary to complete the procedure properly. His staff is polite and willing to assist in explaining fees and insurance coverage, …"

"As always Dr.Lee is a great dentist."

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"Dr. Riley and Dr. Lee are an amazing team of experts;  they are very caring and understanding.I have received an excellent treatment under their care and I highly recommend them.Everyone at ROAR is very helpful and friendly."

"Dr. Lee is very thorough and takes the time to explain everything that he is doing. You can tell he wants what is best for his patients and I feel very caring. His office staff is excellent so what else can you ask for. Dr. Lee will be my dentist."

"dr lee remains professional and extremely competent. gentle, easy to communicate with. i highly recommend him for your dental needs."

"I have been going to Dr. Gannon Lee for several years now, when he took over the practice after my dentist retired. He has built a wonderful staff. They are very easy to work with! Safi, the hygienist, is very gentle, yet thorough and Dr. Lee is upfront with what needs to be done and what your opti…"

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"Dr. Lee really cares about his patients. He explains every;thing. My temporary crown became separated from my and I call his emergency number and he called right back and told me to come in. He met me at his office. This was on a Friday night after 7 in winter."

"Dr. Lee was professional and courteous. He took time to explain the dental procedures and was very pleasant to be in his office. I am 100% satisfied."

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"Caring, knowledgeable, trustworthy and professional. Couldn't recommended more!"

"Dr. Gannon Lee does an exceptional job as my dentist. He and his staff are very friendly and great at explaining issues and providing recommendations. He is thorough with exams and dental work and provides the best experience you can hope for when seeing a dentist. I have already recommended ma…"

"Great dentist and staff."

"I hate going to the dentist but Dr. Lee made the experience so easy. He takes his time and always asks how I am feeling. I would definitely recommend him."

"Dr. Lee and his office have been so accommodating. They are understanding and provide such great care. I feel so important and know that I'm getting the best dental care possible. I will never go anywhere else! The hygienist, Marie is truly the best!!!"

"Dr's Lee and Riley are amazing. My bite was way out of alignment after having a car accident and subsequent spine surgery to replace two of my cervical discs a couple years ago. They made a mouth appliance for me which is helping to correct my alignment. After less than two months of wearing the a…"

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"Excellent dentist and takes the time to get to know me and also explains things thoroughly in a way that I understand. I trust him with my dental care completely."

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"Very professional, thorough, and most importantly, courteous. You won't find a friendlier office that cares so much for their patients' comfort. I could not recommend them more!"

"I am very fortunate to be treated by Dr. Gannon Lee and his team of experts. He has always taken the time to make sure I understand my situation and the treatments. His staff is also very caring and professional. I definitely feel safe under his care and I highly recommend him."

"Dr. Riley and Dr. Lee are an amazing team of experts; they are very caring and understanding. I have received an excellent treatment under their care and I highly recommend them. Everyone at ROAR is very helpful and friendly."

"Dr. Gannon Lee is the Best!!! He does just what needs to be done, and doesn't do more than what is necessary. Dr. Lee always tells you what he is doing before doing it. I Love that about him! He is so caring, gentle, and really listens. I feel safe when he is working on my teeth. That is the Best F…"

"One of the best dentists in the area! Dr. Lee and his staff are extremely professional and caring. Dr. Lee always made sure to make me feel comfortable through all procedures. A huge shoutout also goes to Marie, who always made me feel like a winner after all my cleanings. Overall, I had a great ex…"

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"Everything about Dr. Gannon Lee and his office is top notch. He is a caring, congenial, informative, and highly skilled professional. He has all of the latest equipment and everything is kept meticulously clean. His staff is very helpful and friendly. Highly recommended!!"

"Wow, what an awesome dentist. Kind, caring and charismatic, Dr. Lee is one heck of a dentist. It's tough to find a doctor that cares about your well being during dental procedures, which are no fun anyway; but Dr. Lee is that person. Unbelievable satisfied with this dentist!"

"Wow, what an awesome dentist. Kind, caring and charismatic, Dr. Lee is one heck of a dentist. It's tough to find a doctor that cares about your well being during dental procedures, which are no fun anyway; but Dr. Lee is that person. Unbelievable satisfied with this dentist!"

"Caring, knowledgeable, trustworthy and professional. Couldn't recommended more!"

"Great experience. The office is easy to find, plenty of parking. Minimal wait time. I arrived at my scheduled appointment time and waited less than 5 minutes. Dr. Lee made me feel comfortable and is very knowledgeable. He explained what he was doing every step of the way, and recommended ways …"

"Dr. Lee and staff are wonderful and caring and definitely take their time being detailed with the work. Dr. Lee is a conservative dentist that tries to preserve your teeth as much as possible. Marie, hygienist is also awesome. I don't even realize she is cleaning my teeth! It's a mini-spa treat…"

26302 La Paz Road  Suite 210
Mission Viejo, CA, 92691

ROAR Associates

26302 La Paz Road  Suite 210

Tel: (949) 448-7667

MON - THU : 9:00 am - 4:00 pm

FRI - SUN : Closed