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Toothbrush Science

September 17th, 2025

Let’s talk science! From the vastness of the cosmos to sub-atomic particles, science helps us understand the world around us and how it works. So, let’s take some familiar scientific fields of study and apply them to your toothbrush.

My toothbrush?

Yes, indeed! When it comes to your oral health, your toothbrush is the first line of defense, so understanding how and why it works so well might help us use this handy tool even more effectively.

Biology—the study of living organisms

Unfortunately for your toothbrush, the living organisms we’re talking about here are the bacteria which cause tooth decay and those which can lead to illness. How do these problems arise, and how do we prevent them?

Fight Plaque

Plaque is the sticky film that builds up on teeth, and millions of oral bacteria help make up this biofilm. These bacteria convert sugars and other carbohydrates in the foods we eat into acids. And these acids erode our tooth enamel, leading to tooth decay. (More on this when we get to Chemistry.) The best ways to get rid of plaque?

  • Brush often. The recommended minimum is two minutes of brushing twice a day, but when you’re having orthodontic work done, it’s even more important to banish the plaque that can stick to your braces or inside aligners. Ask us what brushing schedule is best for you.
  • Try an electric toothbrush. For some people with braces, cleaning the teeth is easier and more thorough with an electric brush.
  • Replace your brush regularly. Brushes become worn and frayed after three or four months, and you won’t be brushing as effectively.

Stop Germs from Spreading

  • Don’t share. Sharing toothbrushes can lead to an increased risk of colds and infections.
  • Rinse thoroughly after brushing, making sure you remove any toothpaste or debris left after you brush.
  • Store the brush upright and let it air-dry. Covering the brush or keeping it in a closed container can promote the growth of bacteria more easily.
  • Keep different brushes separate when they’re drying to avoid cross-contamination.
  • Replace your brush regularly!

Chemistry—the study of what makes up substances, their properties, and how they interact

When it comes to improving your brushing chemistry, the best thing you can do for your toothbrush is to put a dab of fluoride toothpaste on it! Why fluoride? Let’s look at the chemistry of tooth enamel.

Tooth enamel is the strongest substance in our bodies—even stronger than bone. But it is not indestructible, and acidic substances can dissolve the mineral bonds which give our enamel its strength, whether they come from the bacteria in plaque or are found in our favorite foods and drinks (sodas, coffee, tomatoes, and citrus are among the tasty, but acidic, culprits).

The enamel in our teeth contains calcium and phosphate ions, minerals which help make it the strongest substance in our bodies. But when the level of acidity in our mouths becomes too high, these minerals begin to dissolve. Eventually, teeth become pitted, bacteria can penetrate more deeply, and decay is the result.

So what can we do? While our saliva helps neutralize acidity naturally, and we can cut back on acidic foods in our diets, using fluoride toothpaste actually helps restore the strength of our enamel in a process known as “remineralization.”

Fluoride works on the surface of enamel to both attract and anchor calcium ions, reducing mineral loss and strengthening the weakened enamel. Fluoride also interacts with the calcium and phosphate compound to create a new compound that is even stronger and more acid-resistant.

When you brush with fluoride toothpaste, you help replace and restore the mineral composition of your enamel—and there’s evidence that fluoride might even interfere with oral bacteria’s ability to produce acid. Now that’s good chemistry!

Physics—the study of matter and energy and their interactions

The matter here is your tooth enamel, and the energy is the force you use when brushing. And this is one time the force should not be with you.

  • Over-vigorous brushing can not only damage your brackets, but can also irritate delicate gum tissue and wear down enamel. A “sawing” back-and-forth motion is both hard on your enamel and misses plaque and debris between the teeth. We’ll be happy to show you the safest and most effective way to brush with braces. Just remember, “Massage, don’t scrub.”
  • A soft toothbrush is almost always your best option when you use a manual brush, but if you’re still a heavy-handed brusher, or have sensitive teeth and gums, consider an electric model. An electric toothbrush should provide a continuous brushing motion without needing any heavy pressure from the brusher. Some models will even let you know when you are brushing too hard.

Brushing harder is not brushing better, and your teeth, gums, and braces will be heathier with careful brushing habits. If you need tips on brushing with braces, contact our Langley office and ask!

There’s a lot of science in the simple act of brushing, but we don’t need to spend hours studying to get a passing grade in dental health. The things you do normally—brushing at least two minutes twice a day, using fluoride toothpaste, and applying proper brushing technique—will help create a smile which will earn you top marks from Dr. Cronin for a lifetime!

Tips to Avoid Common Problems Associated with Braces

September 10th, 2025

While braces play an important part in helping to create a healthy mouth and teeth, you might experience a few side effects while wearing them that are common and can be easily treated.

Even with the best of care, braces can cause soreness to your mouth. As your teeth begin to move, it is natural for your teeth to feel aches and your jaw to develop soreness.

If there are broken wires or loose bands on your braces, a sore tongue, mouth, or canker sore will occur. Canker sores are a common occurrence when braces rub inside the mouth. There are ointments available to reduce the pain and irritation associated with mouth sores. We urge those who experience a sore mouth or any of the following problems to call our office to schedule an appointment.

  • Loose brackets: Apply a small amount of orthodontic wax to the bracket temporarily. You might also apply a little between the braces and the soft tissue of your mouth.
  • Loose bands: These must be secured in place by your orthodontist. Try to save the band for repair.
  • Protruding or broken wires: The eraser end of a pencil can be used to move the wire carefully to a less painful spot. If you are unable to move it, apply orthodontic wax to the tip. If a mouth sore develops, rinse with warm salt water or antiseptic rinse.
  • Loose spacers: These will need to be repositioned and sometimes replaced.

Foods to Avoid

Some foods can also help or hurt you while you’re wearing braces. Remember to cut your food into small pieces that can be easily chewed. You will want to avoid hard and chewy foods that can break your hardware. Foods such as corn on the cob, nuts, carrots, apples, ice, and bubble gum should be avoided.

Braces, rubber bands, springs, and other mouth appliances associated with braces will normally attract food particles and plaque. Without the proper care, this could cause staining of your teeth.

Our staff at Cronin Ortho recommends brushing after every meal or snack and carefully removing any food that might be lodged in the braces. A fluoride mouthwash might be helpful as well as flossing. At your next appointment, Dr. Cronin can advise you how to floss with a brush specially designed for braces!

Orthodontic Treatments

September 3rd, 2025

It’s not unusual for a patient to be unaware of the range of services that orthodontists can provide for their patients. Knowing which services Dr. Cronin and our team perform can help you better understand your options and why we might select a particular method of treatment.

Both orthodontists and dentists care about good oral health, but they approach treatment in differing ways. You know that dentists clean teeth and treat gum disease, tooth decay, toothaches, and other oral health problems.

But what does your orthodontist do besides help straighten teeth with the help of braces? Orthodontists are commonly known to help fix or realign crooked teeth. Many of the patients at Cronin Ortho come in for appointments that relate to their braces.

Dr. Cronin and our team recommend that children be seen around the age of seven to evaluate their potential orthodontic needs. Common problems may include overcrowding of teeth, large gaps or spaces, and overbites or underbites, among other things.

In order to address these common problems, we offer several methods of treatment besides standard braces and retainers:

  • Space maintainers can be used to fill the spaces left by missing baby teeth so other teeth don’t shift and occupy the adult tooth’s location.
  • Jaw repositioning appliances, sometimes known as splints, are used to reposition the upper and lower jaw bones correctly.
  • Lip and cheek bumpers can also be used to avoid having to pull teeth. These bumpers are placed in the mouth so the patient’s lips or cheeks don’t put pressure on specific teeth.
  • A more common appliance that orthodontists use is expanders. If your mouth is crowded, expanders will be placed on the curve of the upper and/or lower jaw(s) in order to make room for teeth to be properly aligned.
  • As a last resort, an orthodontist may turn to headgear. This is normally provided to slow down the growth of the jaw. It must be worn a number of hours each day.

When you visit our Langley office, we will go over these options with you and pick the best course of treatment, depending on the current state of your oral health.

No matter which oral appliances you end up with, Dr. Cronin and our team will go over all the available options with you to give you a beautiful smile. If you have questions regarding your treatment method, don’t hesitate to call our office and we can provide you with some insight.

Understanding the different options your orthodontist can provide should make matters less confusing if you should need to select a method of treatment.

Common Issues with Braces: How to avoid bad breath

August 27th, 2025

A bright, beautiful smile is often achieved with braces. The time you spend wearing braces is an investment in the good health and appearance of your smile. However, Dr. Cronin and our staff know that having braces on your teeth can pose challenges. Many of these challenges are commonly faced by all who wear braces, such as flossing, getting food stuck in your braces, and bad breath.

Today, let’s address bad breath and what to do about it. There’s no reason you have to shy away from conversation for fear that you’ve got bad breath.

Fresh Breath Tips for Braces Wearers

  • Eat a Healthy Diet. Unhealthy foods that are laden with sugar can contribute to bad breath. Stick with healthy produce, protein, grains, and dairy found on the list of foods your orthodontist says are safe to eat with braces.
  • Drink Non-Sugary Beverages. Likewise, steer clear of sugary sodas and juices for the same reason. They contribute to bad breath.
  • Stay Hydrated. A mouth that’s continually dry can lead to bad breath by inhibiting your production of saliva. Regular production of saliva removes bacteria and excess food from your mouth, both of which cause bad breath.
  • Brush Often. Brush your teeth and tongue first thing in the morning, after each meal and snack, and before you go to bed, to remove food particles and bacteria that cause bad breath.
  • Don’t Forget to Floss. Flossing with braces might seem tricky, but it is a necessity. Ask Dr. Cronin to show you the best way to floss effectively with braces.
  • Mouthwash Use. Use the mouthwash recommended by Dr. Cronin. For the best results, swish the mouthwash around in your mouth for 30 seconds.
  • Get Regular Cleanings. Regular dental exams and cleanings are more important when you have braces. Cavities can delay your treatment progress, so be sure to visit your dentist every six months.

Practice Good Hygiene Daily

Good oral hygiene practices are important every day, whether you wear braces or not. But they become even more important during the months you wear braces. In addition to your regular orthodontic checkups, see your general dentist for cleanings and exams.

Together, you and our Langley team will keep your mouth healthy and fresh during and after your orthodontic treatment.