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.


Oral Devices


Stop Snoring Today!

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


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.

Photo of a female staff member laughing with a male patient.
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What our patients are saying...

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

"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."

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

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

"100% will go againđź‘Ť"

"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."

"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…"

"Very professional and knowledgeable team. Highly recommended"

"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."

"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…"

"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."

"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.."

"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"

"Very informative and helpful"

"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."

"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!"

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

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

"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."

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