Highgrove Dental Care
A Great Dentist
  • Dentist St. Paul MN
  • Dental Office St. Paul MN

Open Monday through Thursday 7 am to 7 pm
for your convenience!

Welcome to Our Practice

We feature pain-free and sedation dentistry to make your patient experience comfortable and relaxed. Even if you have had difficulty getting and staying numb or you have some catching up to do when it comes to your dentistry, we can help you achieve and maintain excellent oral health. We look forward to welcoming your entire family to our Saint Paul, MN dental office.

Dr. O'Neill

With over thirty years of experience, Dr. O'Neill offers high-quality, reliable results to our patients seeking general, cosmetic, and emergency dentistry. Our entire team is committed to providing you with an outstanding experience consistently.


"Dr. O'Neill is a perfectionist! He knows the latest techniques and has the most updated equipment. He is very thorough in his assessments and is knowledgeable. I highly recommend him. Great, friendly staff. Very professional." - Mary Dunnavan


3 Things You Should Know about Sedation Dentistry

Oral Conscious Sedation | St. Paul MN dentist

Having a fear of the dentist is more common than you may think. The Centers for Disease Control and Prevention estimate that up to a third of adult Americans have some level of dental anxiety.

Oral conscious sedation dentistry opens the door for patients who might otherwise avoid the dentist due to anxiety or stress related to dental treatment. At Highgrove Dental Care, we offer oral conscious sedation to help patients relax and receive the dental care they need to stay healthy.

Dealing With Dental Anxiety

Here are 3 things you should know about oral conscious sedation dentistry:

#1 – You will remain conscious, but totally relaxed. Oral conscious sedation requires the use of ...

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Root Canals... Simplified!

Root Canal in St. Paul MN

An infection can occur anywhere on the body, and unfortunately, your teeth are no exemption.

While root canal treatment sounds complex, it is actually the simple process of removing bacteria and infection from the internal canals inside your tooth. This treatment allows you to feel relief from the pain and swelling that often accompanies a root canal infection.

How Root Canal Treatment Works

Typically when a patient calls in with a dental emergency involving pain, an infection in the root canal is one of the first suspects. An infection can also result in swelling, sensitivity, and discoloration.

When you arrive at our St. Paul dental office, we will evaluate the need for a ...

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The Top 5 Foods That Cause Staining

Teeth Whitening Saint Paul, MN

Even if you don’t use tobacco, you might find that your teeth become stained. Brushing and flossing your teeth can help, but your smile may still darken from the foods or drinks you consume.

Fortunately, teeth whitening in our St. Paul dental office can restore your smile's natural gleam.

Here are some of the main culprits that can prematurely stain your teeth, especially when consumed regularly.

  • Coffee – Many people’s favorite way to say hello to the day can darken your teeth, especially if you enjoy French press coffee or espresso. While filtered coffee can reduce the staining effect, it does not stop it altogether. Coffee causes brown stains that penetrate the ...

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3 Steps We Take to Make Your Root Canal Comfortable

Comfortable Root Canals St. Paul MN

We have seen it a hundred times. We let a patient know they need a root canal, and a look of dread spreads across their face.

Root canals are among the most feared dental procedures, but unfairly so! You will be happy to know that we provide comfortable root canal treatment here in our St. Paul dental office, eliminating the dread and worry that accompanies your appointment.

Here are three steps we take to ensure comfortable root canal therapy:

1. Dr. O’Neill Uses an Innovative Anesthetic Technique

Some patients have a greater difficulty getting numb than others. Dr. O’Neill recognizes this and implemented onset buffered anesthetic techniques for use in our practice. If you ...

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What Happens in Your Mouth When You Skip a Dental Cleaning?

Dental Cleanings St. Paul MN

Because of time, expense, and a fear of the dentist, sometimes patients are tempted to skip a dental cleaning or two. We would like to share a few reasons why skipping dental cleanings is not a good idea and can put your health at risk.

Bacteria and Infection

Bacteria begin to form within minutes after eating. Sure, you can brush and floss your teeth, but do you do this after every meal or beverage? If the answer is yes, great work! Unfortunately, however, your efforts may still not be 100 percent effective. Your toothbrush and floss cannot reach every area of your teeth and gums. It is a good method to ...

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How Alcohol, Caffeine, Tobacco, and Drug Use Relate to Sleep Bruxism

Sleep Dentistry St. Paul MN

Symptoms of Bruxism

If you suffer from clenching and grinding during the night, a condition known as sleep bruxism, then you know that the symptoms associated with this habit can negatively impact your day-to-day life.

Some of the problems you can encounter include headaches, tooth sensitivity, jaw pain, fractured teeth, ringing in the ears, worn teeth.

You may notice that clenching and grinding can come and go depending on the day. Sometimes you may wake up with dramatic pain associated with bruxism, and other days, you may feel well rested.

The Journal of the American Dental Association (JADA) featured a study that tested the impact of certain lifestyle habits and their influence on sleep ...

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Putting Patient Comfort First

Patient Comfort in St Paul MN | Highgrove Dental Care

At Highgrove Dental Care, we always place patient comfort first. If you are looking for a dentist in Saint Paul and you want to enjoy pain-free dentistry, we can help! Dr. O’Neill uses an innovative anesthetic technique that allows every patient to become fully numb prior to treatment.

Everyone body is different and reacts to anesthetic differently. For some people, getting numb can be a real challenge. For patients with a lower pH level, anesthetic may take longer to take full effect or may not be as effective. We use a different approach.

Gentle Treatment Every Time

Dr. O’Neill wants each of our patients to feel completely comfortable for treatment. Our patients ...

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