A bright, white smile is often associated with confidence and vitality. With teeth whitening products and services booming in popularity, it's no surprise that there's also a growing number of myths and misunderstandings surrounding what works—and what doesn't. From DIY home remedies to professional teeth whitening treatments, separating fact from fiction is essential for anyone considering a whiter smile.
We spoke with Dr. Marielaina Perrone, DDS, a cosmetic dentist with more than two decades of experience, to help clear up the most common teeth whitening myths and share what truly makes a difference.
Myth #1: Teeth Whitening Toothpaste Can Dramatically Whiten Teeth
While teeth whitening toothpaste may promise noticeable results, Dr. Perrone explains that expectations should be realistic.
“Whitening toothpaste can help remove surface stains, like those from coffee or tea, but it doesn't change the natural color of your teeth or remove deeper stains,” says Dr. Perrone. “It's a helpful maintenance tool but not a replacement for professional whitening.”
Myth #2: DIY Teeth Whitening with Baking Soda or Lemon Juice Is Safe and Effective
Some internet remedies suggest using baking soda, lemon juice, or hydrogen peroxide mixtures as natural whiteners. However, these practices may do more harm than good.
“Lemon juice is highly acidic and can erode enamel,” warns Dr. Perrone. “Baking soda, while mildly abrasive, can still wear down enamel over time if used excessively. There's no long-term benefit—and there may be damage.”
Myth #3: Professional Teeth Whitening Damages Tooth Enamel
One common concern is that in-office whitening treatments weaken or harm enamel. According to Dr. Perrone, this fear is largely unfounded when performed correctly.
“Professional whitening systems are meticulously designed to be safe and are applied under controlled conditions. When administered by a qualified dental professional, they do not damage enamel,” she assures, instilling a sense of safety and trust in the audience.
These treatments often use hydrogen peroxide or carbamide peroxide in carefully measured concentrations, with protective barriers to shield gums and soft tissues.
Myth #4: Over-the-Counter Whitening Is Just as Effective as In-Office Treatment
While store-bought whitening strips and gels are widely available, they are inferior to professional solutions in strength or customization.
“Over-the-counter products can help mildly whiten teeth, but they lack the precision, strength, and safety of in-office treatments,” says Dr. Perrone. “Professional systems are customized to each patient, which means more even results and faster whitening.”
Myth #5: Once You Whiten Your Teeth, They Stay White Forever
Teeth whitening results are not permanent, and lifestyle choices can affect how long they last.
“Whitening isn't a one-and-done process,” Dr. Perrone explains. “Foods, beverages, and habits like smoking can cause staining to return. Maintenance and touch-ups are often necessary to keep your smile bright.”
Regular dental cleanings and avoiding stain-causing products can help preserve results longer.
What Does Work for a Brighter Smile?
According to Dr. Perrone, the most effective approach depends on the individual's goals, budget, and oral health.
“Professional in-office whitening provides the fastest, most dramatic results,” she says. “Custom take-home trays with professional-grade gel are a great alternative for patients looking for more gradual whitening.”
She also emphasizes that whitening may not work for everyone, particularly those with intrinsic staining or dental restorations like crowns and veneers.
Final Thoughts
Teeth whitening is a safe and effective way to enhance your smile when done properly and under expert supervision. However, misinformation online can lead people to try potentially harmful remedies or expect unrealistic results. The best way to ensure success and feel guided is to consult with a dental professional before starting any whitening regimen.
“A brighter smile can be truly transformative,” Dr. Perrone concludes, inspiring the audience with the potential of a brighter smile. “But like any cosmetic procedure, it's important to approach it with accurate information and guidance from a trusted provider.”
About Dr. Marielaina Perrone, DDS
Marielaina Perrone, DDS is a leading cosmetic and family dentist based in Henderson, NV. With over 20 years of experience helping patients achieve healthy, beautiful smiles, her practice offers advanced dental whitening, smile makeovers, and comprehensive care in a comfortable, personalized setting.
