Jim Grammas Dentistry
Dimitri Grammas, DDS:
Practice Profile Page


Jim Grammas Dentistry
Jim (Dimitri) Grammas, DDS
Orange, CA













A list of major dental treatments which I offer my patients:

Dental cleaning

White fillings


Inlays & onlays


Clear aligners

Porcelain veneers

Teeth whitening

Dentures & partials

Root canal treatment

Tooth extraction

Dental implants


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 7:00 am to 5:00 pm

Tuesday: 7:00 am to 5:00 pm

Wednesday: 7:00 am to 5:00 pm

Thursday: 7:00 am to 5:00 pm

Friday: Closed

Saturday: Closed

Sunday: Closed





Check out what some of our happy patients are saying about us:

Ginger P. from Yorba Linda, CA (Source: Yelp)


My husband and I have been patients of Dr. Grammas for years.  He is a great dentist, very considerate and personable.  He and his staff provide quality care without over prescribing procedures.  His office is modest, and his staff has been with him for years.  It is a comfortable and friendly environment.  I would highly recommend him.

Kathy B. from Santa Ana, CA (Source: Yelp)


Today Dr. Grammas put a temporary crown on one of my molars! I am a big chicken and  to say I have sensitive teeth and gums is an understatement!  To ease my discomfort and fears Dr. Grammas and his wonderful staff gave me constant support and encouragement throughout the procedure. He is by far the best dentist, and the only one I trust to poke around in my mouth!

Brian L. from Orange, CA (Source: Yelp)


First off, let me say that I HATE Dentists and have had some really bad experiences in the past.  Many of them lie to you and tell you that you need additional services just so they can pull more money out of the insurance company or your wallet.  I work with insurance companies through work and they have confirmed that is a common practice even though it’s completely unethical. So it is extremely rare that I find a dental office that I like, that I trust, and does a quality job, but these guys are great.  Good, careful work.  Quality care.  Friendly hygienists and Dentist, and most importantly they won’t try to lie to you to or upsell you.   I have to say, maybe for the first time ever… I highly recommend this Dentist!

Katie R. from Costa Mesa, CA (Source: Yelp)


I am not from Orange County, and tried various dental offices before landing here.  Other dental offices seemed to take advantage of me as a new patient, telling me I needed “deep cleanings”, fillings, etc, but at this dental office, they have never charged or told me I need an unnecessary service. Staff is friendly and the Dr himself is thorough, my first visit he personally cleaned my teeth & worked gently around my braces. I don’t live close to the office anymore but won’t go anywhere else again ! Thank you for being a business with integrity.

Emmie M. from Anaheim, CA (Source: Yelp)


I have been taking my family and referring my friends for about 15-20 years ( approx. 1996-97) to Dr. Grammas. He is awesome. I don’t have cavities but he has cleaned my teeth and done check ups. I took one of my daughters when she was pre teen and she is now 33 and still goes to Dr. Grammas for her and her spouses dental needs. How many dentists are that well loved? She had to go to an oral surgeon to remove 4 wisdom teeth 17 yrs. ago and he referred us. We trust him- his knowledge and his advice. Good guy and Great dentist. If you want a real family dentist that isn’t a commercial tooth factory of hype and crazy procedures you don’t need-then definitely make an appointment. He has never hurt me. His staff is super friendly and been there for years. Great team and very reasonable prices. I was shocked!!!

Julio and Joy Y. from Orange, CA (Source: Yelp)


First time seeing Dr. Grammas, and I found him and his staff very professional and attentive. They made me feel so comfortable and at ease. So happy to have finally found a good dentist nearby.  I will definitely be recommending him.

Mary M. from Orange, CA (Source: Yelp)


I highly recommend Dr. Grammas. I am a big baby when it comes to going to the dentist. I was very comfortable and all of the staff were so friendly. My teeth are the cleanest they’ve been in a long time.

Madelyn F. from Scottsdale, AZ (Source: Yelp)


Dr Grammas has done great work taking care of our family since 1997. We are all really happy with his staff and how they all make us feel we are getting the best care we could get. After any work that has been done Dr Grammas always makes an evening call to make sure that we are still doing fine. Our youngest daughter was in an accident that left her in the hospital a month with not only 14 broken bones but 3 broken teeth right in the front.  In one visit she left the office looking as if nothing had ruined her perfect smile. We were all amazed!  All 6 of us recommend Dr Grammas and staff for your dental needs.

Nick N. from Roseville, CA (Source: Yelp)


I’ve been coming to Dr. Grammas for……19 years now I think? I’ve moved 12 different times….some as far as 30 miles away and I still keep coming back.  I even met some people that fly in from GEORGIA today to keep coming back to Dr.  Grammas.  That should tell you something. I’m not going to lie, he’s not the most gentle of dentists when it comes to cleaning, but he gets it done and gets it done right. I have never had a problem at any point in my 19 years of coming here.  No visits back to fix something like so many horror stories you hear from other dentists. A++++  would highly recommend

Amanda W. from Los Angeles, CA (Source: Yelp)


I’ve been coming to Dr. Grammas for a decade, eight of those years after I moved from Orange to Los Angeles. But I still make the trek twice a year because he and his staff are that good. I’ve never felt like I was being prescribed anything that was unnecessary, there’s no upselling, just high quality dental work and genuine concern for his patients. I was in LA when I got what turned out to be an infected wisdom tooth, and he wasted no time calling in a prescription for me and then working with a dentist in LA to get the tooth extracted very quickly. I’ve gotten a couple of fillings here, and despite the fact that I wasn’t even numbed, I didn’t feel any pain or discomfort. That’s the quality of dentistry practiced here. Five stars isn’t enough.

Erika M. from Anaheim, CA (Source: Yelp)


I’ve been searching for a family Dentist for over 5 years, most of the offices I’ve visited are rude, dirty, not professional or they think I’m a walking bank. I feel like the dental industry has become somewhat like the mechanic industry,  I just don’t trust them. So now 2017 I was yet again looking for a new dentist and I looked to yelp. I saw that Dr. Grammas has 5 stars so i decided to give this office a try. I called for an appointment and the receptionist was very polite and professional. They accommodated my self and my two children with out a problem. As I pulled in to the office I noticed it was very well landscaped and clean, as I opened the door my nostrils were filled the sweet and pleasant smell coming from the waiting area. The office was very clean and well kept. I walk in and was given paperwork to fill. A few minutes later my children and I were seen our teeth where clean extremely well and the staff was very nice. When I saw Dr. Grammas he told me about what I really needed done and was not pushy at all. I am so glad I found this office it truly is the best dental office and belief me I’ve been to over 10 in the past 5 years. If you are looking for a great dentist and staff that truly cares look no further.

Nancy T. from Placentia, CA (Source: Yelp)


I have an irrational fear of anyone doing dental work in my mouth. IRRATIONAL!! Dr. Grammis has been so kind, understanding and gentle every single time I go. We have referred many friends who also have come to trust him. Also, a wonderful staff. The fear is still there, but, I need therapy for THAT! I totally trust him and would highly recommend anyone else who has fears to start to trust him, too!

Nathaniel S. from Placentia, CA (Source: Yelp)


My family has gone to Dr. Grammas for years. I trust Dr. Grammas and will continue to see him even though my new, cheap insurance plan won’t cover it. Everyone at this office are very friendly. The prices are reasonable.


Patient care is our main focus. Dr. Grammas and our experienced hygienists provide routine and periodontal deep cleanings along with great support for home care. We are a general and cosmetic dental office. We offer In-office whitening, cosmetic crowns and bridges, replacements of old silver fillings and more! Dr. Grammas' private practice has been at this location for over 20 years. Our practice takes pride in genuine oral health care. As a staff, we have all had many years experience in the dental field, as well as many years working together as a team. Our experienced and caring staff and dental health care professionals will help ease any anxieties you may have about seeing a dentist. We have created a family oriented atmosphere and welcome all new patients as such. Dr. Grammas has been practicing general dentistry since graduating from USC in 1989. Since then, he has gained respect as a caring and compassionate dental health care professional. With many years of experience. Dr. Grammas' main focus has been to help educate patients on their oral health as well as maintain any and all dental health issues.