Mary Dini, DDS
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For some people, visiting the dentist can be a nerve-wracking experience. Because of this, many people delay and avoid scheduling regular appointments, leaving them with potential dental complications. Dr. Mary Dini and Dr. Mohammad Zarrinnegar have created a compassionate environment for our patients, one where you feel cared for and look forward to your next visit.

Whether you are a busy young professional or you're a parent with children nervous about their appointment, our doctors take the time to understand you personally to provide the best quality dental care in San Mateo and surrounding communities. Our staff enjoys treating patients of all ages.
Services
Dr. Mary Dini and Dr. Mohammad Zarrinnegar love spending time with patients, helping them achieve beautiful smiles. Our compassionate nature, modern facility and state-of-the-art equipment allow patients to trust they are receiving the highest quality care. For nearly 20 years, we've provided professionals and families in San Mateo a friendly, yet professional environment to tend to their oral health care needs.
At the core of our San Mateo dental practice is a friendly team of professionals that are dedicated to your utmost comfort and optimal oral health. We view each patient as a unique individual and tailor each treatment to your specific needs. As part of our commitment to providing close, personalized attention to every patient, we want to encourage patient communication.
Whether your dental needs are a complete exam and cleaning, a full-mouth restoration, or anything in between, we promise to provide you with exceptional care as we enhance the natural beauty of your smile. Below are just some of the many procedures and services we regularly provide to our patients - with a gentle touch, and stunning results.
A preventive program is a cooperative effort by the patient, dentist, and dental staff to preserve the natural dentition and supporting structures by preventing the onset, progress, and recurrence of dental diseases and conditions. Preventing dental disease starts at home with good oral hygiene and a balanced diet.
A comprehensive dental exam will be performed by your dentist at your initial dental visit. Examination of diagnostic X-rays (radiographs): Essential for detection of decay, tumors, cysts, and bone loss. X-rays also help determine tooth and root positions. Oral cancer screening: Check the face, neck, lips, tongue, throat, tissues, and gums for any signs of oral cancer.
Reviews (7)
Ben Horn
Ben Horn
Nov 22, 2021
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Dr Dini is easily the most talented dentist who's ever taken care of my teeth. She moves fast, and keeps the patient informed and comfortable at all times.
Sue Barnes
Sue Barnes
Jul 28, 2021
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Doctor Dini, Iris and team are the best - efficient, friendly and provide top of the line care. I always recommend them to my friends!
Ellen Fisher
Ellen Fisher
Jun 28, 2021
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Dr Dini is an excellent dentist. thorough, knowledgeable, sincere and kind. I highly recommend Dr Dini....
Ronghang Hu
Ronghang Hu
Jun 03, 2021
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I had a periodontal treatment at Dr. Dini after moving to San Mateo. Previously I had bleeding and inflamed gum, and it is now a lot better after the treatment. I wish I had seen her earlier.
I'm now having an Invisalign treatment at Dr. Dini and I'm excited to get my teeth aligned.
Max Linsenbard
Max Linsenbard
Apr 23, 2021
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What an outstanding practice! From the friendly check-in, to the actual cleaning and check-up, everyone was so professional, helpful, and courteous!
Iris will 100% resolve your fear of visiting the dentist - they were amazing at answering my questions, keeping me informed of what was happening and why, and had great positivity throughout my visit.
When Dr. Dini met with me, it was brief, but to-the-point. Pertinent issues were identified and immediately followed up on with surgeon recommendations for my wisdom teeth removal, and followup appointments scheduled for deeper cleaning / gum health
Alara Guzman-MacGillivray
Alara Guzman-MacGillivray
Apr 06, 2021
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All the latest technology, plus the reassurance that they know what they’re doing and have been established for a long time. Dr. Dini and all of the staff are super friendly and knowledgeable. Also, felt very safe with the COVID protocols.
Sebastian Carrillo
Sebastian Carrillo
Mar 19, 2021
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Painful and rushed x-rays.
I requested fillings before my visit, the doctor instead went with a deep cleaning, also very painful and did not address my cavities. Instead simply offered to smooth out my cavity.
Note, it was not Dr Dini who worked it.
Over all, rushed and painful on my mouth. Not so painful on my wallet. Unfortunately for them I will not be returning, I obviously require a much less rushed and painful experience, and a doctor with a milder touch.