Gateway Family Dental Blog

What Is the Link between Alzheimer’s and Oral Health?

What Is the Link between Alzheimer’s and Oral Health?

As we age, it's important to pay attention to our overall health and well-being. One area that is often overlooked is oral health. While you can’t see or taste them, hundreds of bacteria dwell in your teeth, tongue, and gums. While most of them are harmless, some others can cause tooth decay and gum disease. 


Luckily, good oral care practices and a healthy diet can help prevent the growth of harmful bacteria. However, researchers have also discovered more serious correlations between oral health and brain disorders. One of the latest links that researchers have followed is the connection between bacteria causing gum disease and the development of Alzheimer's.


Let’s take a closer look to further explore the connection between these two conditions and the steps you can take to maintain good oral hygiene.


Common Threats to Dental Health

Did you know that our oral health is closely connected to our overall health? As we explained before, the mouth is home to dozens of bacteria, and when these organisms are not properly controlled, they can cause infection and inflammation. This inflammation can spread from the mouth to other parts of the body, leading to systemic health issues.


Bacteria feed on sugars present in the food and beverages you consume. If you don’t properly brush and floss your teeth, these organisms will thrive by consuming any food remaining inside your mouth, leaving behind waste products or plaque. Additionally, sugar-attracted bacteria produce acid, which can cause tooth surface decay and contribute to the formation of plaque.


Two of the most common harmful bacteria are: 


  • Streptococcus mutants: This bacterium produces enamel-eroding acids and is the main driver of tooth decay.
  • Porphyromonas gingivalis: This anaerobic organism is deemed a contributor to periodontitis and gingivitis( gum disease).


The Role of Oral Bacteria in Alzheimer's

Recent scientific studies have revealed an intriguing and potential link between gingivitis and Alzheimer's disease. While gum disease has been previously associated with an increased risk of heart disease, studies have pointed to this new correlation.


At the center of this connection lies precisely the aforementioned
porphyromonas gingivalis bacterium. This organism produces harmful toxins that have been implicated in the formation of beta-amyloid plaques, a defining characteristic of Alzheimer's disease.


Scientists discovered that Porphyromonas gingivalis can migrate from the mouth to the brain, unleashing enzymes called gingipains that destroy nerve cells. This nerve cell destruction can lead to memory loss, eventually progressing to Alzheimer's.


Periodontal Disease and Alzheimer's

One specific oral health condition that has been linked to Alzheimer's is periodontal disease. Periodontal disease is a chronic inflammatory condition that affects the tissues supporting the teeth. It occurs when the gums become infected due to the buildup of plaque and tartar. The bacteria associated with periodontal disease can easily enter the bloodstream and travel to the brain, increasing the risk of cognitive decline.


Maintaining Good Oral Health

While more research is needed to fully understand the link between oral bacteria and Alzheimer's disease, the current findings highlight the importance of maintaining good oral hygiene habits to curb the risk of developing periodontal disease and, potentially, Alzheimer's. Here are some tips to keep in mind:


Brush Your Teeth Twice a Day

Brushing your teeth at least twice a day is the foundation of good oral hygiene. Use a soft-bristled toothbrush and fluoride toothpaste to clean all surfaces of your teeth. Be sure to brush gently and spend at least two minutes on each brushing session.


Floss Daily

Flossing is equally important as brushing and shouldn't be overlooked. It helps remove plaque and food particles from between your teeth and along the gumline, where a toothbrush can't reach. Take your time to floss properly and use a gentle, back-and-forth motion.


Use Mouthwash

Consider incorporating mouthwash into your oral care routine to reduce the number of bacteria in your mouth, promoting healthier gums and fresher breath. Look for a mouthwash with the American Dental Association's (ADA) seal of approval.


Visit Your Dentist Regularly

Regular dental check-ups are essential for maintaining good oral health. Your dentist can spot any early signs of dental problems and provide timely treatment. Aim to visit your dentist at least twice a year for professional cleanings and comprehensive oral examinations.


Follow a Balanced Diet

A nutritious diet positively impacts your oral health. Limit your consumption of sugary and acidic foods and beverages that can contribute to tooth decay. Instead, consider a balanced diet rich in fruits, vegetables, lean proteins, and whole grains. Drinking plenty of water also helps wash away bacteria and protect your teeth.


Take Care of Your Toothbrush

To ensure effective cleaning, replace your toothbrush every three to four months, or sooner if the bristles become frayed. Rinse your toothbrush thoroughly after each use and let it air dry. Avoid covering toothbrushes or storing them in closed containers, as this can harbor bacteria.


Early intervention and managing oral health concerns can make a significant difference in overall health outcomes. If you have any concerns or questions about your oral health, consult a trusted dental provider like
Gateway Family Dentistry. We’re one of the highest-rated dental practices in the Murfreesboro area. Contact us today to schedule an appointment and keep your smile healthy and happy.

Read More From Gateway Family Dentistry

July 31, 2026
At Gateway Family Dentistry , we recognize that selecting the right toothbrush is essential for oral health. Many patients ask whether electric toothbrushes are better than manual ones. Both can clean teeth effectively when used correctly, but dentists often recommend electric toothbrushes for certain patients because they make brushing easier, more consistent, and more effective. Knowing the differences between electric and manual toothbrushes will help you choose the best option for your oral health. Electric vs. Manual Toothbrushes: What’s the Difference? Both electric and manual toothbrushes remove plaque, food particles, and bacteria. The main difference is how the brushing motion is generated. A manual toothbrush relies on your brushing technique, while an electric toothbrush uses powered movements, such as rotating, oscillating, or vibrating, to clean your teeth. For many, an electric toothbrush makes it easier to maintain proper brushing habits and reach areas that may be missed with a manual brush. Benefits of Using an Electric Toothbrush More Consistent Brushing Motion A key advantage of electric toothbrushes is their consistent brushing motion. Many people do not brush long enough or use proper technique with manual brushes. Electric toothbrushes provide steady movements that can improve plaque removal. Some models include built-in timers to help ensure you brush for the recommended two minutes, supporting healthy brushing habits. Helpful for People With Limited Mobility Electric toothbrushes are very helpful for those with limited hand, wrist, or arm mobility. The powered brush head reduces effort, making brushing easier for people with arthritis or other dexterity challenges. Improved Plaque Removal Research shows that some electric toothbrushes may remove more plaque and minimize the risk of gingivitis compared to manual brushes when used correctly. Regular plaque removal is important to stop oral health issues from happening. Pressure Control Features Many electric toothbrushes have pressure sensors that alert you if you brush too hard. Excessive pressure can irritate gums and wear down enamel. Pressure sensors help protect your teeth and encourage better brushing habits. Are Manual Toothbrushes Still Effective? Yes, a manual toothbrush can still clean effectively when used properly. The most important factors are your technique, brushing frequency, and reaching all areas of your mouth. When using a manual toothbrush, dentists recommend a soft-bristled brush and gentle circular motions. Avoid brushing too aggressively to protect your gums and enamel; focus on thorough, gentle cleaning. What Do Dentists Recommend? At Gateway Family Dentistry , we believe the best toothbrush is the one you use consistently and correctly. For those who struggle with technique, need extra help removing plaque, or possess specific oral health concerns, an electric toothbrush may be a good choice. A manual toothbrush can also be effective when combined with proper brushing habits and regular dental care. Your dentist can help you make the best choice based on your needs, goals, and lifestyle. Regular Dental Care Keeps Your Smile Healthy Whether you use an electric or manual toothbrush, daily brushing and flossing are essential for a healthy smile. Regular dental checkups and professional cleanings help remove buildup, prevent issues, and detect concerns early. At Gateway Family Dentistry , our team is devoted to helping patients keep up with healthy smiles through personalized preventive care and education. We are happy to answer your questions about toothbrushes, brushing techniques, and oral health protection. If you are due for a dental visit or would like customized advice on improving your oral hygiene, contact Gateway Family Dentistry to schedule an appointment. We are here to help you achieve a healthier smile. 
June 30, 2026
At Gateway Family Dentistry, we know that halitosis can impact your confidence and how you feel day to day. Occasional bad breath happens to everyone, but if it sticks around, it could point to a more serious oral health problem. Studying what causes bad breath and how to treat it can help you keep your breath fresh and your smile healthy. Common Causes of Bad Breath Bad breath can have many causes, from everyday habits to dental problems. Figuring out what’s behind it is the first step to finding the right solution. Poor Oral Hygiene Not brushing and flossing well enough is a major cause of bad breath. When food stays in your mouth, bacteria can grow and create bad smells. Plaque that builds up on your teeth and gums can also make bad breath stick around. Dry Mouth Saliva helps clean your mouth by washing away food and bacteria. If you don’t have enough saliva, bacteria can grow faster and cause bad breath. Dry mouth can occur while you sleep, from certain medicines, or due to certain health conditions. Gum Disease Persistent halitosis may point to gum disease. Bacteria under the gums produce toxins and odors that cause halitosis. Treating gum problems early can help keep your mouth healthy and your breath fresh. Certain Foods and Beverages Foods such as garlic, onions, and strong spices can cause temporary bad breath. Coffee and alcohol can also contribute to drying out your mouth. These smells usually go away, but good oral care can help reduce them. Ongoing mouth odor can increase the risk of gum disease, which may contribute to chronic bad breath. Quitting tobacco use benefits not only your breath but also your overall health. How to Treat Bad Breath The good news is that most bad breath can get better with good oral care and healthy habits. Brush and Floss Daily Brushing your teeth twice a day and flossing daily removes plaque that causes bad smells. Don’t forget to brush your tongue, since bacteria often build up there. Maintaining water intake throughout the day helps maintain saliva secretion and washes away bacteria. Maintaining hydration is especially important for individuals who experience dry mouth. Schedule Regular Dental Checkups Routine dental checkups and cleanings help prevent bad breath. Dentists can get rid of bacterial buildup that brushing can’t reach and spot signs of gum disease or other problems that may be causing halitosis. Antibacterial mouthwashes can briefly reduce bacteria and freshen breath. However, antibacterial mouthwashes can help reduce bacteria and freshen your breath temporarily. But remember, they should be used in addition to regular brushing and flossing, not instead of them. If your oral hygiene is poor, it may be time to visit your dentist. Chronic halitosis can sometimes be linked to gum disease, tooth decay, dry mouth, or other medical concerns that require specialist assessment. At Gateway Family Dentistry, we’re here to help you keep your smile healthy and confident with preventive care and helpful advice. Seeing us regularly lets us catch problems early and give you tips that fit your long-term oral health needs. If you’re dealing with persistent bad breath or need a dental checkup, give our office a call to schedule an appointment. We’re here to help you get fresher breath and a healthier smile.
How Diet Affects Your Teeth: Foods That Help and Harm Your Smile
May 31, 2026
At Gateway Family Dentistry, we know maintaining a healthy smile involves more than brushing and flossing. The foods and drinks you consume daily play a major role in your oral health.
Show More