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Your Trusted Sunnyvale Family Dentist
At Diane E. Casey, DDS, we prioritize quality dental care tailored to each patient's unique needs. With over 30 years of experience serving Sunnyvale, California, our practice combines advanced techniques with a compassionate approach to ensure optimal oral health. Our team is dedicated to providing comprehensive services, from routine checkups to complex restorative treatments, all while fostering a welcoming environment that eases patient anxiety. We emphasize preventive care and patient education, empowering individuals to maintain healthy smiles long-term.

Our commitment to continuous professional development ensures access to the latest advancements in dentistry. By maintaining active memberships in leading dental associations, we uphold the highest standards of care. Our mission is to deliver personalized, reliable dental solutions that exceed expectations while building lasting trust within our community.
Services
Oral Cancer Exam Digital X-Rays Fluoride Treatment Porcelain Veneers Dental Implants Invisalign Root Canal Therapy Pediatric Dentistry Sedation Dentistry Teeth Whitening
Highlights and features
  • We offer over 30 years of experience in family and cosmetic dentistry.
  • Our team provides personalized care with a gentle, patient-centered approach.
  • We maintain active memberships in leading dental associations for continued excellence.
  • We prioritize preventive care and patient education for long-term oral health.
  • Our practice combines advanced techniques with compassionate, anxiety-free treatment.
What people say
Friendly knowledgeable staff Exceptional personalized care Compassionate and understanding Professional and thorough Welcoming and clean office
Services
Cosmetic Dentistry
Cosmetic dentistry focuses on improving the appearance of your smile through treatments like veneers, whitening, and bonding. Our practice offers personalized solutions to address discoloration, misalignment, and other aesthetic concerns. By combining artistry with advanced techniques, we help patients achieve natural-looking, confidence-boosting results.
Pediatric Dentistry
Pediatric dentistry provides specialized care for infants, children, and adolescents. Our team creates a welcoming environment to establish positive dental habits early. Services include routine checkups, fluoride treatments, and education on proper oral hygiene to ensure lifelong dental health for young patients.
Dental Implants
Dental implants offer a permanent solution for missing teeth through surgically placed titanium posts. Our practice provides comprehensive implant services, from initial consultation to restoration, ensuring stable, natural-looking replacements that restore function and aesthetics for long-term satisfaction.
Root Canal Therapy
Root canal therapy treats infected or damaged tooth pulp to preserve natural teeth. Using advanced techniques, we remove inflammation and seal the tooth to prevent reinfection. This procedure alleviates pain while maintaining the tooth's structure and function.
Invisalign
Invisalign provides discreet orthodontic treatment using custom clear aligners to straighten teeth. Our practice offers personalized treatment plans for adults and teens, combining aesthetic benefits with effective results through gradual, comfortable tooth movement.
People
Diane E. Casey
Dentist
Dr. Diane E. Casey, a Sunnyvale resident for over 30 years, earned her DDS from Creighton University. She specializes in family and cosmetic dentistry, emphasizing patient comfort and preventive care. Her practice focuses on personalized treatment plans and community engagement.
Questions
What dental services do you offer?
We provide comprehensive services including preventive care, cosmetic dentistry, restorative treatments, pediatric care, and emergency dental services.
Do you accept dental insurance?
We work with most major insurance providers. Contact our office for specific details about your coverage and claims processing.
How can I schedule an appointment?
Call us directly at (408) 402-4785 or use our online appointment request form for new patients.
Are emergency dental visits available?
Yes, we prioritize urgent dental concerns and accommodate emergency appointments during office hours.
What payment options do you provide?
We accept cash, checks, credit cards, and offer financing arrangements for extensive treatments.
How often should I visit the dentist?
Most patients benefit from biannual checkups, though individual needs may require more frequent visits based on oral health status.
Reviews (5)
Teto
Jun 15, 2022 Report
Professional staff. Great work. I was in for just a full x-ray, cleaning and exam. Very quickly and painlessly done. Office very clean. COVID protocols in place. Long time patient, I cannot recommend this practice highly enough. Dr Casey and all the staff are the best.
Ileen D.
May 09, 2022 Report
This office goes above and beyond to ensure the patients are protected from any covid issue - like entering a silicon cleanroom!
Catherine B.
Apr 25, 2022 Report
Great people at this office. I take my kids here and they make them feel so comfortable that they leave asking when is the next visit. Laura is amazing as well as Dr Casey. Totally recommend this practice.
Al Iriberri
Feb 24, 2022 Report
We've been patients for years and will remain so. Friendly and professional staff that make you feel completely welcome and appreciated. When you look forward to dentist visits you know it's a great place! :) UPDATE: We had another family visit yesterday and as usual it was a great experience. There was another family there with young kids and Dr. Casey had them giggling the entire time - even the fussy younger child ended up laughing - that kind of friendliness makes for a much easier exam / cleaning and as parents we know that is a huge help. UPDATE 2: Had a minor issue and called to let them know for the next scheduled visit in March - they strongly encouraged me to stop by today to make sure it was not anything serious and not only took care of it (I'd chipped an old filling) they found a potential cavity developing and took care of that too. Top notch care, as always.
Marcia Chron
Sep 18, 2021 Report
I've been going to Dr. Casey for as long as I've lived in Sunnyvale! She is a great dentist - great work and great conversation. She and her staff are highly professional and they have safe COVID protocols. She was my daughter's dentist also and she's wonderful with kids. I highly recommend Diane Casey