Del Lago Dental Group
Paul Day, DDS:
Practice Profile Page


Del Lago Dental Group
Paul A. Day, DDS
Rancho Santa Margarita, CA













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

Dental cleaning

White fillings


Inlays & onlays


Pediatric dental care

Clear aligners

Porcelain veneers

Teeth whitening

Dentures & partials

Root canal treatment

Tooth extraction

Sedation dentistry

Dental implants


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 8:00 am to 6:00 pm

Tuesday: 8:00 am to 5:00 pm

Wednesday: 8:00 am to 6:00 pm

Thursday: 8:00 am to 5:00 pm

Friday: 8:00 am to 2:00 pm (by appointment only)

Saturday: Closed

Sunday: Closed



Check out some of my treatment photos:



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

John R. from Trabuco Canyon, CA (Source: Yelp)


Our entire family has been going to Dr. Day for more than 27 years. Paul has handled emergencies (more than a few) and normal maintenance with great care and compassion as if he were part of the family. Dr. Day and the entire Group are very professional, pleasant and fun.  The facilities are always immaculate and state of the art. Not only is Paul “painless” but what I like most is his “let’s try this first”attitude rather than rush into an unnecessary procedure. We consider Dr. Day to be a great family dentist but also a friend of the family.

Steph F. (Source: Google)


The office was beautiful and the staff was exceptional! Angie cleaned my teeth, and she had her work cut out for her! She did a great job and was very patient with me. Dr Day was caring and polite with a great sense of humor. In my opinion, the treatment that Dr Day recommended that I have done was probably the perfect balance between conservative and thorough, nothing felt rushed or looked-over. Overall the entire experience was warm and welcoming (and kind of fun). Very grateful, I have found my “dental home”!!

Brynn S. from Laguna Hills, CA (Source: Yelp)


My experience at Dr. Day’s office was five star! The receptionists & dental assistants were so friendly and made me feel at ease. Dr. Day was very personable and he took my mind off the dental procedure by fun conversation & a close-up tv. (; I felt he was very skilled & knowledgeable and did a fantastic & skilled job at correcting my issues.
I would highly recommend Del Lago Dental Group!

Jessica C. from Rancho Santa Margarita, CA (Source: Yelp)


If you’re looking for a dentist to handle literally every problem and concern you have, or to keep up your mouth health, you will never ever look for another dentist again. He’s literally so incredible and friendly and helps with anything you need. I love his family vibe, he makes me feel so at home 🙂

Bert Querry (Source: Google)


My family has been using Dr Day for over 25 years and the quality of care has always been professional, yet you feel as if you are part of a family. I first came to him after having problems with other dentists, he and his staff literally held my hand and comforting me through anxiety and fear. I am grateful for the way I have been treated over the years and would recommend him and his staff to anyone.

Dave A. from Rancho Santa Margarita, CA (Source: Yelp)


I was referred to Dr. Day after having issues with my past dentist not being able to numb my mouth for dental work. Dr. Day was able to take the time to make me feel comfortable around the Dentist again and promised that he would be able to numb me. He not only numbed me perfectly but did it without any pain or discomfort. That is very hard to do with me. His staff is top-notch and kind and friendly. The kind of people you want to invite to your family gatherings. I have referred the rest of my family to Dr. Day and they all feel that he is #1 around town. I will gladly keep referring people his way. I can’t speak highly enough of my experience. Thanks again Dr. Day and staff. You guys are awesome.

Ken W. from Trabuco Canyon, CA (Source: Yelp)


I, and my entire family, have been going to Dr. Day for nearly 25 years, so this review is based on lots of experience.  Dr. Day and his entire staff get five stars for their technical skills, professionalism, and friendliness.  On those rare occasions when I needed to be seen right away, e.g. a broken tooth, I was given an immediate appointment.  The office is spotless and comfortable – even a good variety of magazines in the waiting room.  if you want your teeth to be well cared for, and to be treated like a friend and valued customer, you should go to Del Lago Dental.

Rob R. from San Clemente, CA (Source: Yelp)


Awesome dentist.  Dr. Day has been practicing in the area for 30+ years and has a great reputation, is personable and thorough.  His new office is modern and very nice.  All the staff are very welcoming and have been with him for a long time.  He is current with all the latest dental techniques and technology.  I highly recommend him.

Marianne Porter (Source: Google)


I have been a patient of Dr. Day for 12 years now! Dr. Day is conservative because he does not recommend that I have work done that I don’t need. I really appreciate having a dentist that does not tell me I need to have work done just so that he can make an extra buck. I finally gave up on my kids’ dentist and started taking them to Dr. Day as well.
Dr. Day is a friendly person with a kind and gentle manner. His office is clean and up to date. The office/dental staff are amazing as well. I just can’t say enough about Del Lago Dental!!

Brooke H. frpm Rancho Santa Margarita, CA (Source: Yelp)


Dr. Day is the best dentist ever (…). He is the nicest, most honest dentist you’ll find. He doesn’t try to upsell you on anything and he makes going every 6 months really easy! I have yet to find a dentist half as good as he is. Definitely go to Del Lago Dental if you can!

Jonathan Owen (Source: Google)


I’ve been going to Dr. Day’s dental practice for years (I lost count). Dr. Day is extremely professional as well as personable. He, the dental hygienists and the rest of his staff are top-notch. The facility is also unparalleled in its function, interior design and cleanliness. Highly recommended!

Derek I. from Mount Hope, KS (Source: Yelp)


The members at Del Lago Dental are extremely efficient and hospitable when it comes to any and all dental visits. They ensure an exemplary experience and Dr. Day works very hard to give you the best treatment possible. I give total and complete confidence in this dentistry!

K. Johnson (Source: Google)


I have been seen by Dr. Day and his staff since I was a small child and they are, without a doubt, some of the kindest dental providers out there. I have never had a bad experience with cleaning or further treatment.

Nancy Fox Thompson (Source: Google)


I have been a patient at Del Lago dental for over 20 years…I would never go anywhere else!! Dr. Day is the absolute best!! …As is his hygienist Angie!! They are warm and knowledgeable…and take as much time as needed with me every time! I highly recommend them!!

Tom Sheltraw (Source: Google)


Excellent Dentist! My family has been going to Dr. Day for a few years now. We love his friendly staff and always receive excellent care from Dr. Day.
I would definitely recommend him for your dental needs.

Candy F. from Murrieta, CA (Source: Yelp)


I have been going to Dr. Day for over 23 years. We moved to the Murrieta area and still commute to his office. His work ethics, professionalism, expertise and compassion are beyond reproach. His team is sensitive, caring, accommodating and pleasant always. We call them family. I have used other Dental practices and none can compare. I could never recommend him enough and many of our friends and family are loyal patrons too. Once you join his team you will find it hard to leave like us!!! We have beautiful teeth to boot!!!!

Kathy Goff (Source: Google)


Entire staff at Del Lago are professional, friendly and caring. My entire family has been Dr Day’s patients for over 25 years. Now my parents, 85 and 86 yrs old are happy with all the care they are receiving. Special attention is always appreciated with my mother who suffers from Alzheimer’s; Gentle, attentive and patient! For all our dental needs we are completely satisfied to have Dr Day and his staff care for us!! Thanks everyone.

Rachel H. from Rancho Santa Margarita, CA (Source: Yelp)


(…) After not being to the dentist in years and years, the whole staff were patient, understanding, kind, and gentle with the whole process. Everything they were doing they so so so nicely explained beforehand. I got my teeth cleaned by Genelle and Dr. Day, then came back a day later for two cavities. Dr. Day and Sarah made those cavities legitimately painless.  Both knew beforehand I am a scaredy-cat with needles and did such an amazing job making sure I was okay. Genelle was so so kind during my cleaning, Easy to have genuine conversation with. Sarah was extremely comforting during the internal panic of cavities, staying continually reassuring. Dr. Day made sure the entire experience was explained, charting easily and taking lots of little breaks to talk about sports or show me pictures of his family. Really touching and really personal. My teeth feel amazing, my cavities are no more and I can confidently say this is my new family dentist. The whole staff goes above and beyond, they are all real masters of their craft. They had me and my husband leaving feeling as if we had just spent time with dear friends. Thank you Del Lago!

Kathleen Woodfill (Source: Facebook)


My family has been patients of Dr. Day for nearly 25 years. He and his staff have always been wonderful. Everyone is very friendly and kind. Dr. Day is a fantastic dentist, all of the staff are excellent.

Paul L. from Orange County, CA (Source: Yelp)


(…) On my first visit, I was greeted by friendly staff and the intake forms actually included questions about bad experiences and space to address questions and concerns, very refreshing. Everyone I have met at Dr. Day’s office has been friendly, professional and helpful. The peaceful ambiance of the office, its cleanliness, and the impressive equipment/technology used put my mind at ease.

Dr. Day himself is very kind and professional. He greeted me warmly, has a great sense of humor and went above and beyond to make sure I was comfortable and understood the procedures, techniques, and recommendations. He answered all my questions enthusiastically and made the whole process pleasant and worthwhile.

Anyone reading who may have anxiety or chronic procrastination issues when it comes to seeing a dentist, I encourage you to visit Dr. Day – you’ll receive expert care and peace of mind.

Tessa Woodall (Source: Google)


I have been going to Del Lago Dental for 18 years, and it is just the best. Dr. Day is such a fabulous dentist, and he really cares about the well-being of his patients. And the work he does on your teeth is of great quality and lasts for a long time. Going to see the dentist is never a scary experience when you go to Del Lago Dental!

Cynthia M. from Laguna Hills, CA (Source: Yelp)


The entire family has been going to Dr. Day since about 1996. Even when we moved out of the area, we continue to see Dr. Day. He has a good staff and is a fun, pleasant and knowledgeable dentist. He has really perfected injections. We all think he’s awesome.

Jerry (Source: Google)


I have been a patient of Del Lago Dental for nearly 30 years. Dr. Day and his staff are consistently friendly, courteous and professional. I highly recommend this dental office if you are looking for a new dentist. Their hygienists are amazing (Meghan) and their front desk staff and office manager (Shelly) are always courteous. They deliver the highest quality of service with consistently superb results.

Chuck W. from Mission Viejo, CA (Source: Yelp)


Del Lago Dental is by far the best dental office in the south county area. The entire staff is very hospitable and professional. I have been a patient for 15 years and can’t praise Dr. Day enough for his skill and knowledge of the dental field. I want to thank the Doc for all the years of his wit and work.

Joe Papay (Source: Google)


I have been coming to Dr. Day at Del Lago Dental group for over the past 10 years. I currently live in Las Vegas and I still travel 4 hours to have him do all my dental work. I highly recommend him and his team for anyone looking for a highly competent and personable Dentist.

Mark G. from Rancho Santa Margarita, CA (Source: Yelp)


Incredible! Del Lago Dentistry is hands down the best dental experience I’ve ever had. Shelley was an absolute god sent and made appointment scheduling, follow-ups, and payment a breeze! All very professional and Dr. Day knows his stuff! Would recommend to any and all!

Pam Wheeler (Source: Google)


Dr. Day and his entire team are very knowledgeable and professional. They really care about their clients. Even though we have moved out of the immediate area, I will continue to drive to their practice so I can continue to receive quality dental care.

Andrew Barnes (Source: Google)


I have been a patient here for probably about 20 years. Dr. Day is one of two dentists I’ve ever seen and I have always been extremely happy with his work and the work of his staff. They are all incredibly friendly and inviting and do a great job of making their patients feel at ease. I would recommend this office to any and all who are in search of a great dentist.

Monica Merrifield (Source: Google)


Hands down Dr. Day is the best dentist in all of Orange County! I have been a patient for over 3 years now. His office is beautiful and his staff is amazing. I can honestly say I’m excited to go in for my cleanings. I highly recommend choosing Dr. Day to be your next dentist.

Stephanie Farris Allan (Source: Facebook)


Dr Day is awesome! And his staff can’t be beat!!! It makes for a pleasant (and fun) dental experience!

Genny C. from San Juan Capistrano, CA (Source: Yelp)


Dr. Day is my favorite dentist ever!  I have been coming here for quite a few years and have always had a wonderful experience with everyone in the office.  Dr. Day and his staff are all amazing, welcoming, caring, gentle and so friendly.  I am afraid of coming to the dentist, but Dr. Day and all of his staff always make me feel so comfortable and make coming to the dentist as good as it can get!  Like others have mentioned, Dr. Day is wonderful at numbing your mouth!  I can honestly say that when he does it, I don’t feel even a slight poke!  I can’t say enough about this office.  Give them a try and you will be so happy that you did!  The office is located right on the lake and is also beautifully decorated inside.  All of these things add up to a wonderful experience!  🙂

A. H. from Ladera Ranch, CA (Source: Yelp)


I have been a patient of Dr Day’s for a little under a year, but during that time he and his always polite staff have offered stellar care for my husband and I.  I had needed multiple fillings replaced and he did it with great finesse and attention to detail, making sure my fickle bite was restored in successive visits.  He is an upstanding guy who has a great sense of humor and you can tell he loves what he does.


Dr. Day earned his Doctorate in Dental Surgery from the University of the Pacific School of Dentistry. Prior to attending dental school, Dr. Day did his undergraduate work in San Francisco at Brigham Young University. He completed a Post Graduate Residency at Long Beach Veterans Memorial Hospital. Dr. Day is dedicated to staying current and proficient with Leading-Edge Dentistry by attending thousands of hours of Continuing Education and Advanced Training. Practicing dentistry is his passion. He prides himself on his ability to ease patient’s fears and make them feel comfortable. His primary goal is to give every patient a 5-star experience every time we see them. When he is not creating gorgeous, healthy smiles, you can find him outdoors playing basketball, biking, golfing, and skiing. He enjoys going to Angel games and is a huge USC football fan. Dr. Day loves spending time with his family, his wife Lori, his kids Brooklyn, Taylor and Adam and his granddaughter Mara.