Orthodontist in Rancho Cucamonga

Dr. Brown

At Sweet Tooth Children’s Dentistry in Rancho Cucamonga, California, Dr. Julia Brown’s primary mission is to build trusting relationships with her young patients to ensure lifelong oral health.

Orthodontist in Rancho Cucamonga

Dr. Brown’s gentle demeanor immediately puts children at ease, as does her office, which is designed just for children. Behind the cheery decor, however, Dr. Brown’s facility is equipped with the latest technology to deliver state-of-the-art care for kids of all ages, from toddlers to teens.

Dr. Brown emphasizes preventive care and sits down with parents and kids alike to educate and familiarize her patients with the best practices in dental health.

Dr. Brown is a California native, born in Redlands, California. She completed a Bachelor of Arts degree in biology at California State University, San Bernardino before attending Loma Linda University School of Dentistry where she received her Doctor of Dental Surgery (DDS) degree in 2006.

Dr. Brown is a member of the American Dental Association, California Dental Association, and the Tri-County Dental Society.

Aside from her work, Dr. Brown’s other passions include her husband Shawn; children Whitney, Genevieve, Maxwell, and Carson; and her world famous poodle. Dr. Brown loves celebrating life with her friends and family, drinking tea, and telling corny jokes.

Dr. Mariano

Dr. Rachele Mariano is a Board-Eligible pediatric dentist who enjoys working with children and helping them develop brighter healthier smiles. She graduated from the University of California, Irvine with her bachelor’s degree in Neurobiology. Afterward, she received her Doctor of Dental Surgery degree at the University of California, Los Angeles. While in dental school, she dedicated herself to volunteering–by providing care and promoting oral health in underserved populations of LA County.

After dental school, she served as chief resident and completed her advanced training in pediatric dentistry with NYU Langone Dental Medicine at Rady Children’s Hospital in San Diego, CA.

It was through her training that Dr. Mariano has had experience with sedation dentistry, full-mouth dental rehabilitation under general anesthesia, dental trauma management, and a special focus on the treatment of children with special health care needs. She is a member of the American Academy of Pediatric Dentistry, American Dental Association, California Dental Association, California Society of Pediatric Dentists, and San Gabriel Valley Dental Society.

Dr. Mariano is bilingual in both English and Tagalog (Filipino) and knows conversational ASL. During her spare time, she enjoys spending her time with family and friends, listening to music, reading, dancing, and playing with her cat, Lucky.

Dr. Michael Lyons

Orthodontist in Rancho Cucamonga Dr Lyons


Born and raised in Southern California, I’ve spent most of my life in this area. My wife Michelle and I live in Anaheim Hills, where we raised our two now-adult children. Our life is currently filled with pets: at last count we had three dogs, a guinea pig, and a horse! We also recently welcomed our first grandchild.

Outside of creating smiles and being with loved ones, my passions include golf, hockey, fitness, nutrition, and animal welfare.


  • American Association of Orthodontists
  • Pacific Coast Society of Orthodontists
  • California Association of Orthodontists
  • American Dental Association
  • California Dental Association
  • Orange Country Dental Society


  • Bachelor degree in Biology, University of California at Irvine
  • Doctorate of Dental Surgery, University of California at Los Angeles (Summa Cum Laude, Omicron Kappa Upsilon)
  • Master of Science in Oral Biology and Certificate in Orthodontics, University of California at San Francisco

Dr. Khalaf

Dr. John Khalaf graduated from Loma Linda University School of Dentistry and completed a two-year residency program in Dental Anesthesiology at Loma Linda University Medical Center.

Dr. Khalaf loves the satisfaction that comes from transforming lives by providing his patients with exceptional dental care. He is a key part of what makes our practice so successful and builds our excellent reputation. His years of in-depth experience and his kind, professional manner leave patients at ease and create positive experiences that keep patients coming back again and again.

He has a California General Anesthesia permit and is also certified inBasic Life Support, Pediatric Advanced Life Support and Advanced CardiacLife Support.

Dr. Gabriela Andrade

Dr. Gabriela Andrade was born and raised in Southern California. She graduated Summa Cum Laude from the University of La Verne with a major in Psychology and minor in Biology. Before starting dental school she spent a year in South Korea teaching English at a rural elementary school.

Dr. Andrade traded in the surf board for skis when she earned her Doctorate in Dental Surgery from University of Colorado, Denver. While in school she was involved with various organizations; Kids In Need of Dentistry, was the President of the Hispanic Student Dental association, Women In Dentistry and volunteered to provide low cost dental care with Colorado Mission of Mercy. She is passionate about dentistry and making her patients feel at ease all while having fun.

Dr. Andrade is newly married and on her free time she loves to travel, practice yoga and work in her garden.

Dr. Samer Rashad

Orthodontist in Rancho Cucamonga Dr Samer

Dr. Samer Rashad, also known as “Dr. Samer”, is a Board Certified Pediatric Dentist. He received his undergraduate education at the University of Southern California with a degree in Neuroscience, and then received his degree as a Doctor Of Dental Surgery through the Herman Ostrow School of Dentistry of USC. He completed his advanced training in pediatric dentistry at NYU Langone in Brooklyn, where he also served as Chief Resident.

Dr. Samer specializes in both behavior management and special needs patient care. He enjoys establishing a solid rapport with each child, each visit is tailored to their ability and needs. His passion for pediatric dentistry has given him the opportunity to travel to over 10 countries (and counting!) providing dental care to children in need. Dr. Samer is an active member of the American Association of Pediatric Dentistry and California Dental Association, and is a diplomate of the American Board of Pediatric Dentistry.

Aside from dentistry, Dr. Samer enjoys playing soccer, hiking, camping, traveling the world, and spending quality time with his family and friends…and his French Bulldog, Drake.

Amanda F. “Mandie” – Insurance Coordinator

Mandie has been working with children in the dental field for 11 years. She is an RDA with a Bachelor of Science in Sociology from Cal State Fullerton.

Mandie is our Insurance Coordinator and has been calling Sweet Tooth her work home since its opening in 2014. She is always here to help answer any questions you may have regarding billing and insurance.

When she is not lending a helping hand at work, you can find Amanda walking the aisles of Target. She also enjoys spending time with her husband and son.

Maura – RDA

Kids Dentist in Rancho Cucamonga

Maura has been working in the dental field for 30 years and has been at Sweet Tooth since its opening in 2014. Maura loves working with children because it gives her the opportunity to see them grow year after year.

Maura is a registered Dental Assistant performing cleanings, taking x-rays, and assisting the doctors. Maura will help to make your child feel at ease for their dental appointment.

During her free time, Maura likes to spend time with her family and dogs. She enjoys gardening and travelling to explore new places.

Pearl – RDA / Orthodontic Treatment Coordinator

Kids Dentist in Rancho Cucamonga CA

Pearl has been in the dental field for 12 years. She has been working in pediatrics and orthodontics since she graduated with honors from dental assisting school. Pearl loves working with children because they have great imaginations and say the silliest things.

As a registered Dental assistant, she works in the back doing cleanings, x-rays and helping the doctor chairside. Pear ensures to treat her patients how she would want to be treated at the dentist.

Pearl can be found spending time with her kids at home having movie nights or out hiking. She also enjoys going for runs.

Lily – RDA

Sweet Tooth Orthodontics & Children’s Dentistry

Lily has been working pediatric dentistry since her completion of school from American Dental Academy in 2009. Lily gets a smile on her face from helping our littles with theirs. She says interacting with the kids is what makes her job the most enjoyable.

Lily is a Registered Dental Assistant assisting during treatment appointments, capturing x-rays and performing cleanings. She makes sure her patients are as comfortable as possible during their appointment.

When Lily isn’t working, you will find her doing Zumba. She also enjoys outdoor activities with her kids and husband.

Aaleiyah – RDA

Kids Dentist in Rancho Cucamonga

Aaleiyah graduated dental assisting school in 2016 from American Career College and has been working pediatrics and orthodontics since 2018. Pediatric dentistry is her specialty because she feels like a kid at heart and relates to our littles.

As a Registered Dental Assistant, she works in the back doing cleanings, x-rays, and assists the doctor chairside. Aaleiyah really goes out of her way to make sure the patients feel like they have made a friend here at the office.

You can find Aaleiyah at home getting creative with makeup and playing with her dogs.

Aleeseya – RDA

Kids Dentist in Rancho Cucamonga CA

Aleeseya has been working in pediatrics since her graduation from UEI College in 2010. She not only specializes in pediatrics but in orthodontics as well. Aleeseya loves working with our littles because she loves the unique personality of every patient.

Aleeseya works in the back office as a Registered Dental Assistant assisting during treatment and orthodontic appointments, capturing x-rays and doing cleanings. She makes sure her patients are well cared for during their appointment.

In her spare time, she enjoys doing outdoor activities with her children.

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