Somewhere between generations of passed-down advice and a growing wave of social media health trends, a lot of misinformation about dental care has taken root. Some of it is harmless. Some of it leads people to delay care, avoid the dentist altogether, or try at-home remedies that do more harm than good. The good news is that modern dentistry has answers, and most of what people fear or assume about the dental chair simply no longer holds up.
At Newton Smile Centre, we hear these myths regularly, and we take every question seriously. Part of how we care for patients is making sure they understand what they are actually dealing with, so decisions about their smiles are based on facts rather than fear. Our full range of dental services is built on current science, and we are always happy to walk you through what the evidence actually says.
Common Myths Worth Addressing
A few misconceptions tend to come up more than others in our Newton Centre office. Some have been around for decades, while others have picked up steam more recently through online health trends. The ones we hear most often include:
- X-rays are too risky: Modern digital imaging uses a fraction of the radiation that older film systems required.
- Root canals are extremely painful: Today’s anesthesia and technique have made the procedure comparable to a routine filling.
- You only need a dentist when something hurts: Many serious conditions develop without any pain in the early stages.
- Crowns always require multiple visits: Same-day crown technology has changed this entirely for many patients.
Each of these deserves a closer look, because the gap between the myth and the reality has real consequences for how people approach their care.
The Myth That Dental X-Rays Are Dangerous
Few concerns come up more often than worries about radiation from dental X-rays. The image of lead aprons and protective shields has given many patients the impression that X-rays carry significant risk, but modern dental imaging has changed dramatically. Today’s digital dental X-rays use a fraction of the radiation that older film-based systems required, and the exposure from a full set of dental X-rays is comparable to the amount of natural background radiation a person receives during a short airplane flight.
Skipping X-rays, on the other hand, has real consequences. Decay between teeth, bone loss, infections forming below the gumline, and early signs of oral cancer are often invisible during a visual exam. X-rays are how we catch these issues early, before they become more involved and more expensive to treat. The risk of missing something far outweighs any concern about the imaging itself.
The Myth That Root Canals Are Unbearable
Root canals have a reputation that has never been accurate, and modern anesthesia has made it even less so. The procedure itself does not cause pain — it relieves it. By the time most patients need a root canal, they are already dealing with significant discomfort from an infected or inflamed tooth. The treatment clears the infection, seals the tooth, and allows the patient to keep a natural tooth that would otherwise require extraction.
What Root Canal Therapy Actually Involves
With today’s techniques and local anesthesia, most patients report that root canal therapy feels similar to getting a routine filling. Discomfort afterward is typically mild and manageable with over-the-counter pain relief. The fear surrounding this procedure keeps many people from seeking the care they need, which often leads to the infection spreading and the tooth being lost entirely. Treating it early is almost always the more comfortable and more affordable path.
The Myth That You Only Need a Dentist When Something Hurts
This is one of the most common and costly misconceptions in dentistry. Many serious conditions, including gum disease, early decay, and oral cancer, develop without any pain in their early stages. By the time symptoms appear, the problem is often significantly more advanced. According to the National Institute of Dental and Craniofacial Research, scientific and technological advances now allow for earlier detection and more precise treatment of oral conditions, but only when patients are seen regularly enough to benefit from them.
Routine checkups are not just about cleaning teeth. They are an opportunity to screen for changes in tissue, catch decay before it reaches the nerve, monitor the health of existing restorations, and evaluate bite and jaw function. The patients who tend to fare best over time are those who come in consistently, even when nothing feels wrong.
The Myth That Crowns Always Take Multiple Appointments
Many patients still believe that getting a crown means at least two separate visits, a temporary crown in the meantime, and a waiting period of several weeks. That was true for a long time, and it remains the case at many practices. At Newton Smile Centre, however, our same-day crowns technology allows us to design, mill, and place a permanent ceramic crown in a single appointment. There is no temporary restoration, no second injection, and no waiting.
This is a good example of why it is worth asking questions when you come in. Advances like this one have reshaped what certain procedures look like, and patients who assume dentistry works the way it did ten or twenty years ago may be carrying unnecessary anxiety about treatments that are now far more comfortable and efficient.
Get Accurate Answers at Newton Smile Centre
Dr. Walid Benaissa completed his doctorate at Tufts University School of Dental Medicine in 2004 and has remained committed to continuing education, bringing the latest techniques and technology to our Newton Centre practice. Our long-tenured team has built lasting relationships with patients across the Newton, Brookline, and Longwood Medical area communities, and we take pride in being the kind of practice where you can ask any question and get a real answer. Most major insurance plans are welcome here, including Delta, Cigna, Aetna, Humana, United, and MetLife, and Cherry 0% financing is available for qualifying cases.
If something you have heard about dentistry has been keeping you from coming in, bring the question to us. We will give you a straight answer, and our team is ready to help you get the care you need. Contact our office to schedule your next visit.

