Get to Know Your Local Dentists

Dr. Kevin Badii

Managing Doctor and Orthodontist

Dear Patients and Friends of OC Smile,

Thank you for allowing me the opportunity to introduce myself to you! I am an Orange County native, and after graduating from El Dorado High School, I attended the University of Hawaii on a full football scholarship. Due to injury, I received my undergraduate degree, in Biology, from California State University at Stanislaus. While at CSUS, I served as the team captains for both the Men’s soccer and Men’s track teams. I received my Doctor of Dental Surgery (DDS) degree from USC School of Dentistry, where I graduated with honors and became a lifetime member of Omicron Kappa Upsilon, the esteemed National Dental Honor Society. I received my Specialty Orthodontic Certificate and Masters of Dental Science (MDS) Degrees from the University of Connecticut. I am a Diplomate of the American Board of Orthodontics, an extraordinary accomplishment achieved by a very small percentage of orthodontists.

My wife, Dr. Bonnie, and I have 3 beautiful children. We’re “OC Locals” and enjoy all the awesome amenities the area has to offer. In my free time, I enjoy spending time with my family, being active outdoors, and reading. I find importance in demonstrating solid values and morals, and I have always pursued excellence in my personal and professional life. I look forward to working with you to help create your beautiful, long-lasting, smile.

Yours in Health!

Dr. Kevin Badii
Dr. Kevin Badii Is A Board Certified Orthodontist
Dr. Kevin Badii Is A Board Certified Orthodontist

Dr. Mike Hyneman

Dr. Mike Hyneman grew up locally in Fullerton, attending Laguna Road School the year it opened. He graduated from Sunny Hills High School before receiving a B.S. degree in Biology from Stanford University. After receiving a DMD degree from Washington University in St Louis, he moved back west to Arizona, where he practiced general and cosmetic dentistry 32 years before selling his offices and returning home to Fullerton in 2018.

Dr. Hyneman is married to his wife Roberta, a dental hygienist, and has two grown children. His daughter, Rachel, has a PhD in particle physics, and is completing a post-doctorate degree at Stanford’s Linear Accelerator Center. His son, Daniel, has earned both DDS and MD degrees, and is in his fourth year of an oral and maxillofacial surgery residency at LSU Medical Center.

Dr. Hyneman and his wife enjoy home renovation in their spare time, as well as downhill skiing in Durango, Colorado, where they have a small second home. Additionally, he enjoys building experimental aircraft and has completed two projects.

Dr. Hyneman is passionate about what he does, striving to provide excellent care to all. He truly treats his patients like family!

Dr. Laleh Hedayat

Dr. Laleh Hedayat graduated from Dental School in 1997, and is also a former assistant professor at OHSU school of dentistry in Portland, Oregon. She has attended multiple comprehensive dental training programs at USC, UCLA and University of Pacific and has been practicing General Cosmetic Dentistry in Orange County since 2007.

Dr. Laleh has been active in hands-on continuing education and staying up to date in most advanced techniques of Restorative Cosmetic Dentistry. She is committed to creating a stress-free dental experience, for all of OC Smile’s wonderful patients, by taking care of their dental and oral healthcare needs.

In her spare time, she enjoys traveling to different parts of the world and learning different languages. She also enjoys painting, yoga, and is an avid nature lover and hiker.

Dr. Mehrzad Dalaei

Dr. Mehrzad Dalaei, aka “Dr. D,” graduated with his Doctorate of Dental Sciences (“DDS”) degree from Tehran University of Medical Sciences in 1993. Immediately after graduation, ‘Dr. D’ started his career in his own private practice, which he owned until 2017. In 2017, Dr. D became a professor and clinical instructor at Loma Linda University

Dental School (Loma Linda, CA). While teaching at Loma Linda, he worked very closely with dental students to create and implement comprehensive dental treatment plans in order to help improve the overall health care of the patients he oversaw. Additionally, he helped enforce safety standards and infection prevention protocols to offer adequate protection to students and patients.

Dr. D joined OC Smile in early 2022, and he brings nearly 30 years of experience and knowledge to our team of dental professionals. Dr. D is a very compassionate doctor with a reputation for providing exceptional care and treatment. He is a diligent healthcare provider with nearly 3-decades of industry experience, and he enjoys helping
our patients improve their oral health and oral aesthetics. He listens diligently to patients, which helps him better assess their unique individual wants and needs. Dr. D is happily married with two children, a daughter who is in nursing school and a son who is studying biology. When Dr. D is not creating healthy smiles, he enjoys spending time doing various activities such as archery and playing Tar (which is an old traditional Persian instrument).

Dr. Frank Mehrdad

Dr. Frank Mehrdad, aka “Dr. Frank”, graduated from Arizona State University in 1995 with a Bachelor of Science degree in Microbiology. He then moved to Maryland, where he completed his Doctor of Dental Surgery (DDS) Degree from The University of Maryland School of Dentistry in 1999. Shortly after, Dr. Frank moved to Sunny Southern California in 2000, which is where he’s been practicing dentistry ever since.

Among many things, Dr. Frank prides himself on providing the best cosmetic, general, and restorative dental procedures possible. He has kept up with the latest technology in dental field by attending countless continuing educational courses.

In his free time, Dr. Frank enjoys spending time with his two boys (age 7 and 12) and his wife of 17 years.

Dr. Alisha Hewko

Dr. Alisha Hewko was born and raised in North Orange County. She completed her undergraduate degree at the University of California, Santa Barbara and received her Doctor of Dental Surgery degree (DDS) from the University of the Pacific in San Francisco.

Dr. Hewko prides herself on delivering quality dental care with compassion and respect to all of her patients. Her primary areas of focus are general dentistry inclusive of cosmetics, root canals, extractions, bone grafts, cosmetic repairs, crowns, dentures, teeth whitening, and more. Dr. Hewko has been practicing general and cosmetic dentistry in Southern California since 2015. She is excited to be a part of the OC Smile team and the communities we serve.

Dr Hewko enjoys relaxing outdoors and spending time with her two year old son, Liam and her husband Josh.

Dr. Austin Burnett

Oral Surgery, Extractions & Implant Dentistry

Dr. Austin Burnett is a Southern California native. He was born in Corona and lived in Yorba Linda most of his life. Upon graduation from Troy High School in Fullerton, he obtained his Bachelor of Science degree in Microbiology with minors in Chemistry and Japanese from BYU in Utah. He received his Doctor of Dental Medicine (DMD) degree from UNLV School of Dental Medicine, where he graduated top of his class and Magna cum laude. Dr. Burnett completed his Oral and Maxillofacial Surgery specialty training at Cook County Hospital, a level I trauma center in Chicago (see ER the tv show). He was awarded the Resident of the Year award twice while in residency, served as an adjunct faculty member for the Midwestern University College of Dental Medicine, and presented scholarly works at the Chicago Society of Oral and Maxillofacial Surgeons biannual meeting.

Dr. Burnett has completed certifications in ACLS (Advanced Cardiovascular Life Support), PALS (Pediatric Advanced Life Support), ATLS (Advanced Trauma Life Support), and BLS (Basic Life Support). He has active hospital privileges at Orange County Global Medical Center in Santa Ana. Dr. Burnett is a member of the American Association of Oral and Maxillofacial Surgeons (AAOMS), the California Association of Oral and Maxillofacial Surgeons (CALAOMS), the American Dental Society of Anesthesiology (ADSA), the American Academy of Implant Dentistry (AAID), the American Dental Association (ADA), the California Dental Association (CDA), and the Orange County Dental Society (OCDS).

Dr. Burnett was married to his wife Elise in Redlands, CA. They currently have three children: Caden (7), Vance (5), and Macey Jane (1). He is an Eagle Scout, black belt in Tae Kwon Do, avid guitarist, lifelong soccer player, and die-hard Lakers fan! 

Dr. Jeremy Owyoung

Periodontics and Implant Dentistry

Dr. Jeremy Owyoung graduated from the University of California, San Diego (UCSD) with a Bachelor of Science degree in Biochemistry/Cell Biology and Management Science. He received his Doctor of Dental Surgery from the University of Southern California School of Dentistry (USC). Upon the completion of dental school, Dr. Owyoung was trained at the University of California, San Francisco (UCSF) to achieve his speciality certificate in Periodontics and Implant Dentistry and a Master of Science degree in Biomaterials/Oral Biology. He has lectured and published on an array of topics including Chronic Disease Prevention and Oral Health Promotion, Dental Biomaterials, and Oral Implantology. Dr. Owyoung is a Diplomate of the American Board of Periodontology, A Recognized Specialty of the American Dental Association.

When he’s not fixing smiles, Dr. Owyoung enjoys mountain biking, music, and digital photography. He can also be found watching NBA basketball, and NFL/USC football. 

Our Dental Services

General Dentistry

Dental Implants

Emergency Care

Pediatric Dentistry

Oral Surgery


The Proof is in our Patients

Chris C.
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Very pleasant experience today. My normal dentist is closed on Fridays. I had an emergency visit today for my son. Lindsey was very helpful and made the overall experience pleasant. So thankful OC smile is open on Fridays and Saturdays. I will be returning to OC smile. I highly recommend this dentist. I am now considering them for Orthodontics. CC
Seth L.
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This place is beyond professional, very caring and a very clean/nicely appointed offices. Took me right in since I was in excruciating pain and got me squared away very quickly. I highly recommend them, you will not be disappointed.
Oscar M.
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OC Smile went above and beyond with service, they made me feel very comfortable, I have never had such a great experience. I look forward to returning, my Dentist is Dr. Mike Hyneman he was great to talk to and he really knows what he is doing, I appreciate all the staff as well they made every go smooth and easy. My teeth were hurting and they got me in right away when another place said they had no immediate openings. Thank OC Smile for being so helpful with everything.

2 Convenient Locations

Our Fullerton, CA Office

1950 Sunny Crest Dr., Ste #1100 | Fullerton, CA 92835

Working Hours

Monday 9:00 AM – 7:00 PM
Tuesday9:00 AM – 7:00 PM
Wednesday 9:00 AM – 7:00 PM
Thursday 9:00 AM – 7:00 PM
Friday 9:00 AM – 7:00 PM
Saturday 8:00 AM – 4:00 PM

Our Mission Viejo, CA Office

26137 La Paz Rd Ste 150, Mission Viejo, CA 92691

Working Hours

Monday 9:00 AM – 7:00 PM
Tuesday9:00 AM – 7:00 PM
Wednesday 9:00 AM – 7:00 PM
Thursday 9:00 AM – 7:00 PM
Friday 9:00 AM – 7:00 PM
Saturday 8:00 AM – 4:00 PM

The Ultimate Patient Experience

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