a Beautiful Smile…

We want you to smile wide and bright. Whether you are in need of dental implants to fix the unsightly appearance of a tooth, or you need the work of an experienced professional to bring damaged teeth back to health, you have come to the right place.

Meet the


Dr. Roya Niakiani, DMD

Dentist San Diego | 6th Ave Periodontics

Dr. Roya Niakiani is a specialist in periodontics, with an emphasis on dental implants. After earning her D.M.D. in 1994 and performing a residency at the Veterans Administration hospital in Loma Linda, Dr. Niakiani completed three years of postdoctoral periodontic studies at Tufts University School of Dental Medicine in Boston. There she gained extensive experience in guided tissue and bone regeneration, mucogingival periodontal plastic surgery, dental implants, osseous surgery and oral pathology.


Before pursuing her education in dentistry and periodontics, Dr. Niakiani received a Bachelor of Science in biology and minor in psychology from the University of California, San Diego.

Dr.Nikou Rahbar, D.D.S

Dr. Nikou Rahbar, D.D.S, is a California Board certified dentist. She received her Bachelors of Neurobiology from the University of Texas, Austin and her Doctorate of Dental Surgery from the University of the Pacific, Arthur A. Dugoni School of Dentistry in San Francisco.


Dr. Rahbar has extended experience performing a wide variety of dental procedures including treatment for porcelain veneers, crowns, bridges, inlays and onlays, bondings, fillings, and emergency care. Her priority in providing dental care is to make each patient as comfortable as possible through detailed communication of diagnoses and procedures, and to meet their individual needs with the highest quality of care. She believes in providing quality dental care through superior expertise and compassion for each patient’s unique case. In her free time, Dr. Rahbar enjoys traveling, cooking, and spending time with her husband and daughter.

Dr. Maria Mella, D.D.S

Dr. Maria Mella, completed her Doctor of Dental Medicine at Centro Escolar University in Manila Philippines in the year 1990. She took her International Program at Loma Linda University in the year 1996 and fellowship at the University of Washington in the year 1998. She has dedicated her practice for 19 years and counting with a focus on endodontics.


Dr. Mella is married to husband Joe and is blessed with four kids, Hailey, Daniel, Abigail and Nicholas. Dr. Mella’s family is growing, adding two more dogs, Binkie and Coco.



Dental Implants

Dental implants are replacement teeth that look, feel and function like natural teeth. If you are missing one or more teeth, dental implants can allow you to regain normal function and be able to confidently show off a nice smile once again.

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Forget everything you’ve heard about teeth straightening, because our team has been recognized as a top 1% Invisalign® provider, meaning that we are highly skilled in using the technology that lets you get the smile you always wanted without the hassle and pain of bands, brackets, or wires.

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Custom Cosmetic Dentistry

If you are unhappy with the appearance of short, unsightly teeth, there are several procedures we can utilize to cover and/or protect unsightly, sensitive or exposed root surfaces and leave you with a more beautiful smile.

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By using a highly advanced technique, LUMINEERS can be placed in just 2 easy visits without requiring shots or drilling of your sensitive tooth structure.Made from extraordinarily strong, patented Cerinate porcelain, LUMINEERS are clinically proven to maintain their radiance and integrity for over 20 years.

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TMD/TMJ Treatment

The head and mouth are home to a myriad of nerves, muscles, tendons, ligaments, joints and bones which affect not only your teeth, but your overall health and well-being. When not properly balanced, the forces created by these elements can result in symptoms including chronic headaches and migraines, temporomandibular joint (TMJ) pain, neck and jaw pain, earaches, tinnitus (ringing in the ears) and sleep apnea among other symptoms. TruDenta orthodontists are uniquely trained and equipped with state-of-the-art technology to quickly examine and diagnose dental force abnormalities.

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Six Months Smile

We’re happy to say that technology keeps making it easier and easier for people dealing with an unsightly smile and poorly aligned teeth to make the appearance of their teeth as nice as they imagine. The latest product on that front to join the arsenal of services at 6th Avenue Periodontics and Implant Dentistry is Six Month Smiles®.

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Dental Restoration

Dental restoration is a broad topic that encompasses a number of procedures we perform at 6th Avenue Periodontics & Implant Dentistry. Each is designed to do a specific job, but all share the same goal – improving the health and appearance of your teeth, gums and jaw through the most-effective and least-invasive method.

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Scaling and Root Planing

Scaling and Root Planing involves removing plaque and bacteria underneath the gums and around the roots, making sure your periodontal area is healthy.

This treatment starts with a thorough cleaning that may include scaling to remove plaque and tartar deposits beneath the gum line, making sure any pockets that have developed between your teeth and gums are free of bacteria.

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Root Canal Treatment

Contained within each tooth is a small space called the root canal. This canal holds blood vessels and nerves in what is known as dental pulp. It is possible for the pulp to become diseased or even die, causing a toothache or, more seriously, an abscess. In the past, the conventional way to treat this was to simply remove the entire tooth. But times are much different now. We can perform a root canal procedure to restore your tooth back to health. A dead tooth can be saved and can last a lifetime, with its roots receiving nourishment from the surrounding teeth.

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What Our Patients Say

  • This has to be one of the best run dental offices I have ever been to. All aspects of your care are considered and managed in a professional, courteous, friendly manner. I left this office after my first visit with a feeling of awe at what they are all creating there. Hats off to Dr. Niakiani and her staff!!!!

    Lisa Diel
    Lisa Diel
  • This office is extremely accommodating and well run. The service is fast and everyone is friendly. I couldnt be more pleased about trying a new dental office and the top notch treatment I received. Definitely would recommend that others go here!

    Anonymous Patient
    Anonymous Patient
  • This is one of the nicest dental offices I have been to. The staff are all informative and professional. I'll definitely be using 6th Ave as my dentist here in San Diego.

    Mark Pattison
    Mark Pattison





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