
Obstructive sleep apnea (OSA) is a sleep disorder in which the airway repeatedly collapses during sleep, causing breathing interruptions, loud snoring, and poor sleep quality. While CPAP machines are effective, many patients find them uncomfortable, noisy, or difficult to travel with. Oral appliance therapy offers a proven, comfortable alternative. At Harmony Dental Care in West Covina, Dr. Khaef provides custom-fabricated mandibular advancement devices (MADs) that gently reposition the lower jaw forward during sleep, keeping the airway open and reducing or eliminating apnea events and snoring. These compact, portable devices are easy to use and well-tolerated by most patients. Patients from Walnut, City of Industry, and Charter Oak find CPAP-free sleep apnea relief at Harmony Dental Care.

A custom mandibular advancement device fits over your upper and lower teeth like a retainer. It gently advances the lower jaw forward, which prevents the tongue and soft tissues from collapsing into the airway during sleep. This keeps the airway open, reduces snoring, and prevents apnea episodes. The device is custom-fitted using digital impressions for maximum comfort.
Oral appliance therapy is recommended by the American Academy of Sleep Medicine for patients with mild to moderate obstructive sleep apnea and for patients with severe OSA who cannot tolerate CPAP therapy. It is also effective for primary snoring. A sleep study (polysomnography or home sleep test) is typically required to diagnose OSA before treatment.
Custom-fabricated devices. Digital impressions ensure a precise, comfortable fit. No bulky one-size-fits-all appliances.
Coordinated care. We work with your sleep physician to ensure the oral appliance effectively treats your diagnosed OSA.
Medical insurance billing. Sleep apnea oral appliances may be covered by medical insurance. Our team handles billing and claims.
Convenient location. Our custom oral appliances serve sleep apnea patients from Walnut, City of Industry, Charter Oak, and surrounding communities.
Harmony Dental brings 20 years of experience treating complex sleep-disordered breathing and bruxism in the eastern San Gabriel Valley also known as the greater Los Angeles area community. Our dedication to helping patients (and their partners) finally get a quiet, restful night's sleep is backed by our 200+ 5-star reviews.
Your sleep therapy and appliance fitting will be expertly managed by Dr. Nguyen. As a highly trained DMD, they specialize in dental sleep medicine and airway health. Our practice is also proud to be recognized with 5 star dentist of West Covina.
For patients with mild to moderate sleep apnea or chronic snoring, we provide a custom-fitted Mandibular Advancement Device (MAD). Unlike a loud, restrictive CPAP mask, this comfortable oral appliance gently shifts your lower jaw forward while you sleep, naturally opening your airway so you can breathe easily.
Yes! That is one of the greatest side benefits of our sleep devices. We utilize 3D Digital X-rays, 3d scanners, digital impressions, and pain-free laser dentistry to custom-fit your appliance, which not only stops snoring but also acts as a highly durable night guard, protecting your teeth and jaw from the damaging effects of nighttime grinding (bruxism).
The cost of a custom Mandibular Advancement Device is highly competitive, especially when compared to a lifetime of CPAP supplies. Because healthy, uninterrupted sleep is vital to your cardiovascular health and overall well-being, Harmony Dental proudly accepts CareCredit, Sunbit, Alpheon, Credit Card and in-house membership plan to make your treatment affordable.
Because obstructive sleep apnea is a diagnosed medical condition, oral appliance therapy is often covered by medical insurance rather than just dental. Harmony Dental works alongside All PPO insurances, Medi-cal, Denti-cal, CalOptima, delta dental, deltacare hmo, MediCare advantage plans with Blue shield of California Medicare d-snp, Elite Health, Kaiser permanente California Medicare, ucla health MediCare advantage,well careAspire health plan, Central Health MediCare Plan, imperial health plan, Molina healthcare, scan health plan and sharp health plan to help navigate your benefits, and we highly recommend our complimentary virtual consults, free second opinions, No insurance specials and free aligner consultations to clarify your exact coverage.
If you or your spouse are suffering from chronic snoring or CPAP intolerance, we want to help you sleep better right away. We are open Monday through Friday, 9:00 AM to 6:00 PM. Call us today at (626) 858-3305 or ask about our $59 new patient exam, x-rays, and cleaning to book your airway and sleep evaluation.
Absolutely. Our welcoming clinic is centrally located at 148 N Grand Ave and provides free and ample parking right in front of the building for a quick, hassle-free arrival. We also feature fully wheelchair accessible and ground-floor access to ensure your visits are totally stress-free as we fine-tune the fit of your new sleep device.
Harmony Dental Care is led by Dr. Khaef and Dr. Nguyen, both committed to continuing education and staying at the forefront of dental technology and techniques. Our clinical team brings expertise in implant dentistry, cosmetic procedures, restorative care, periodontics, endodontics, pediatric dentistry, and sedation.
Beyond clinical skill, what sets our team apart is a genuine love for our patients. We remember your name, we ask about your family, and we celebrate your results with you. That personal connection is what hundreds of reviewers mention most — and it’s what makes Harmony Dental Care feel like home.





We believe financial concerns should never prevent anyone from receiving quality dental care. Harmony Dental Care accepts a wide range of insurance plans:
PPO and Indemnity plans. We work with most major dental insurance carriers and maximize your benefits on every visit.
Medi-Cal, Denti-Cal, & Smile California: Full dental for members. We handle all authorizations and claims.
CalOptima dental. Direct provider — no referral needed.
Flexible financing. Affordable monthly payment plans for elective and major procedures. Ask about our options during your visit.
$59 New Patient Special. Comprehensive exam, digital X-rays, and professional cleaning for new patients without insurance.
We know that dental insurances try to make things difficult. Because of this, we go the extra mile to help you understand your dental insurance and maximize your benefits. Give us a call and we can do a complete complimentary insurance eligibility for you before your visit.
Business Hours:
Monday: 9 AM–6 PM
Tuesday: 9 AM–6 PM
Wednesday: 9 AM–6 PM
Thursday: 9 AM–6 PM
Friday: 9 AM–6 PM
Saturday & Sunday: Closed
Top-rated dental care across Los Angeles & Orange County. Your smile is our priority.
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