"See Your Dentist Twice A Year."

You’ve probably heard the advice many times: visit your dentist every six months for a dental cleaning, examination, and X-rays. But have you ever wondered why this specific timeline became the standard? Surprisingly, the recommendation to see your dentist twice a year is not based on scientific evidence. Instead, it originated from a clever marketing campaign by the Pepsodent brand in the early 1920s. Despite this, the twice-yearly visit remains one of the most significant improvements in dental care history. Let’s explore why this recommendation exists, what science says about dental cleanings and biofilm, and how you can make the best choices for your oral health.

The Origin of the Six-Month Dental Visit

The 1920's ad from Pepsodent

Before the 1920s, dental hygiene was not a common practice in American households. In fact, only about 7% of Americans owned a toothbrush. Pepsodent, a toothpaste brand, launched a marketing campaign encouraging people to brush their teeth regularly and visit the dentist "twice a year." This campaign dramatically changed public behavior: within a few years, 65% of Americans owned a toothbrush.

The six-month dental visit recommendation was part of this campaign. It was a simple, memorable message that helped people adopt better oral hygiene habits. While it was not based on scientific research, it created a routine that encouraged regular dental care and awareness.

What Science Says About Dental Cleaning Frequency

Dental cleaning is essential to remove dental plaque and dental biofilm, which are sticky layers of bacteria that form on your teeth. If left untreated, these can lead to cavities, gum disease, and other oral health problems. However, research shows that after a professional cleaning, the dental biofilm begins to reorganize and mature within about three months.

This means that the six-month interval might be too long for some people, especially those prone to gum disease or with a history of dental problems. For these patients, more frequent cleanings—every three to four months—can better control biofilm buildup and reduce the risk of complications.

Why You Should Talk to Your Dental Hygienist About Cleaning Frequency

Every person’s oral health is unique. Factors like genetics, diet, smoking, and medical conditions affect how quickly dental plaque and biofilm accumulate. Your dental hygienist can assess your individual risk and recommend the best cleaning schedule for you.

Tooth plaque takes only 3 months to organize to become damaging.

Here are some reasons to consider asking about more frequent cleanings:

• You have a history of gum disease or cavities

• You have dental implants, crowns, or bridges

• You smoke or use tobacco products

• You have diabetes or other health conditions affecting your immune system

• You struggle with maintaining good oral hygiene at home

  
  

By adjusting your cleaning schedule, you can better protect your teeth and gums and support your overall health.

The Benefits of Regular Dental Cleanings and Exams

Regular dental cleanings and exams do more than keep your smile bright. They help detect problems early, before they become painful or expensive to fix. During your visit, your dentist or hygienist will:

• Remove plaque and dental biofilm that brushing and flossing miss

• Check for signs of tooth decay, gum disease, and oral cancer

• Take X-rays to see hidden issues between teeth and under gums

• Offer personalized advice on improving your oral hygiene routine

  
  

Keeping up with these visits can save you from more invasive treatments and help maintain your overall health. Research links poor oral health to heart disease, diabetes, and other systemic conditions, so taking care of your mouth supports your whole body.

What You Can Do Today

The six-month dental visit is a good starting point, but it might not be the best schedule for everyone. Talk to your dental hygienist about your specific needs and whether more frequent cleanings could benefit you. Being proactive about your oral health can prevent problems and keep your smile healthy for years to come.

Remember: Your dental hygienist is your partner in health. Don’t hesitate to ask questions and share your concerns. Together, you can create a plan that fits your lifestyle and keeps your teeth and gums in top shape.