When should you throw away your toothbrush?

November 20, 2013

One of the best tools you can use to help keep your teeth and mouth healthy is your toothbrush. Are you getting the most out of your toothbrush? A worn out toothbrush cleans your teeth much less effectively than a new toothbrush, so make sure your replace your toothbrush regularly to increase it’s efficiency.


Worn Out

As you use your toothbrush, the bristles get worn down and frayed. This causes them to be less effective at removing the plaque and calculus that accumulates on your teeth. Don’t wait until your brush is visibly splayed out and frayed. At this point your bristles are thoroughly worn out and most likely haven’t been doing an optimal job of cleaning your teeth. Instead write the date on your toothbrush handle and replace your toothbrush every 3 to 4 months.


If your toothbrush has an indicator strip, but it hasn’t worn out in 3 to 4 months, chances are you aren’t brushing your teeth long enough. If you need, you should get a toothbrush timer to ensure that you are brushing your teeth for 2 full minutes twice a day. If you don’t have a timer, but you have a smart phone, see if one of these apps would work for you.


On the other hand, if you find that your toothbrush is starting to fray prior to the 3 to 4 month mark, chances are that you are brushing too hard. If this is the case, we recommend using an electric toothbrush – specifically an Oral-B with SmartGuide. The SmartGuide has an indicator that lets you know when you are brushing too hard and helps retrain you to brush your teeth better.

Small children often chew on their toothbrush, causing the bristles to fray earlier than expected and requiring the toothbrush to be changed more often.


Sickness

In the past, dentists have recommended replacing your toothbrush when you get sick. A small study by researchers from the University of Texas Medical Branch, has shown that replacing your brush after you are sick may not be necessary. Although one of the co-authors states that more research is necessary to confirm this theory.


At our Evanston dental office, Dr. Jim and Dr. Bob have conflicting opinions on this subject. Dr. Jim recommends replacing your toothbrush after you get sick, especially if you haven’t replaced your toothbrush recently. Older toothbrushes may harbor bacteria, and the addition of any viruses or bacteria from illness just adds to the “ick” factor. Changing your toothbrush after you are sick is a good start to a healthier mouth.


Alternatively, Dr. Bob does not feel there is a need to change your toothbrush after you are sick. Once you get over your illness, your body is capable of producing the antibodies necessary to fight off the illness. So there is less chance of you getting sick from any bacteria that may be harbored by your toothbrush.


In either case, keep the 3 to 4 month time frame in mind. If you are sick nearer to the 3 or 4 month time frame, save yourself the hassle and switch your brush after you are healthy again.


Other Extenuating Cases

Other reasons for changing your toothbrush usually involve outside intervention from pets and small children. For example – a toothbrush that ends up in a pet’s mouth or in the toilet would need to be replaced. Those examples may be obvious, so here’s one that may be less obvious: if your significant other uses your toothbrush. Replacing your toothbrush in this case helps minimize cross contamination, especially if your partner has any kind of periodontal disease or dental caries.

 

Maximize your toothbrush’s efficiency and change your brush four times a year. Choose a toothbrush with extra soft bristles to ensure you don’t damage your gums or enamel. Other than that, choose a toothbrush that is comfortable for you and brush two times a day for two minutes. If you have any questions about your toothbrush or your brushing habits, bring them up with your dental provider at your next dental visit.

June 24, 2025
Pregnancy is a time of excitement, anticipation, and transformation. As your body adapts to nurture new life, your needs evolve—including your dental care. At Stephens Dentistry, we’re passionate about supporting expectant mothers through every stage of this journey. Understanding the connection between oral health and pregnancy is not just important for your smile, but for the wellbeing of both you and your baby.  How Pregnancy Impacts Oral Health Pregnancy brings about a surge in hormones, especially estrogen and progesterone, which can have a profound effect on your gums and teeth. Many women notice changes in their oral health during pregnancy, including increased sensitivity, swelling, or bleeding gums. These shifts aren't just uncomfortable—they can also signal conditions that need attention to safeguard your overall health. Pregnancy Gingivitis: What You Need to Know One of the most common dental issues during pregnancy is pregnancy gingivitis. According to the Centers for Disease Control and Prevention , up to 60–75% of pregnant women develop gingivitis, which is characterized by red, swollen, and bleeding gums. This occurs because hormonal changes heighten the body’s response to the bacteria in dental plaque. If left untreated, gingivitis can progress to periodontitis—a more serious gum infection that can cause tooth loss and has been linked to health risks beyond the mouth. Oral Health and Birth Outcomes The importance of oral health during pregnancy goes beyond comfort and aesthetics. Research has shown a significant link between maternal gum disease and adverse pregnancy outcomes, such as preterm birth and low birth weight. A systematic review published in the Journal of Dental Research found that women with periodontal disease may be more likely to deliver prematurely or have babies with low birth weights. Although more research is ongoing, the potential connection means that taking care of your gums and teeth is an essential part of prenatal health. Why Dental Care Shouldn’t Wait Some expectant mothers worry about dental treatments during pregnancy. The good news is that routine dental care—including cleanings and necessary treatments—are not only safe but recommended during pregnancy. The American College of Obstetricians and Gynecologists confirms that preventive dental work is important and can be performed safely, especially in the second trimester. Delaying care can allow small problems to become bigger ones, and untreated infections can pose a risk to both you and your baby. If you are planning to become pregnant, scheduling a dental checkup beforehand is an excellent way to get ahead of any issues. Practical Tips for Expectant Mothers Maintaining oral health during pregnancy doesn’t have to be complicated. Here are some tips to keep your smile healthy throughout your pregnancy: Brush and Floss Regularly: Aim to brush twice a day with fluoride toothpaste and floss daily. This helps remove plaque and reduce your risk of gingivitis. Eat a Balanced Diet: Focus on nutritious foods rich in calcium, vitamin D, and protein, which support both your oral and overall health. Manage Morning Sickness: If you experience vomiting, rinse your mouth with water or a fluoride mouthwash rather than brushing immediately afterward, as stomach acid can soften tooth enamel. Stay Hydrated: Drinking plenty of water helps wash away food particles and bacteria, and can also help combat dry mouth, which is common in pregnancy. Schedule Regular Dental Visits: Let your dental team know you are pregnant so they can tailor your care. At Stephens Dentistry, we take extra precautions to ensure your comfort and safety during each visit. Learn more about our preventive dental services . Recognizing When to Call Your Dentist While mild gum sensitivity is common, it’s important to reach out to your dentist if you notice persistent bleeding, swelling, or pain. These symptoms could indicate an infection that needs prompt attention. If you develop a dental emergency during pregnancy, don’t hesitate to contact your dentist—timely care is always the best choice for both you and your baby. Supporting Your Health at Stephens Dentistry At Stephens Dentistry, we’re committed to providing compassionate, personalized dental care for every stage of life—including pregnancy. Our team stays up-to-date on the latest guidelines and safety protocols to ensure you receive the best care possible. For more information on how we support our patients during pregnancy, visit our dental care for families page. Pregnancy is a beautiful journey, and your smile should be a part of it. Prioritizing your oral health is a gift to yourself and your growing family. If you have questions or want to schedule your next dental visit, contact our office —we’re here to help you every step of the way.
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