Scottsdale Dentist Featured on NBC Debunks Top Dental Myths

Dr. Kris Alpers recently appeared on NBC 12 News Arizona to tackle some of the most common, and most misunderstood, dental myths. From whitening toothpastes to mouthwash and even sparkling water, Dr. Alpers helped set the record straight on what’s really helping (or hurting) your smile.

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Myth #1: Whitening Toothpaste Whitens Your Teeth

According to Dr. Alpers, whitening toothpastes don’t actually whiten your teeth, they just scrape off surface stains.

“Most whitening toothpastes use abrasive particles that can actually wear down your enamel,” he explained during the segment.

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For patients who have invested in cosmetic treatments like veneers, or restorative treatments like dental implants and crowns, this can be especially harmful. Those abrasives can dull the porcelain’s natural shine, leaving your smile looking less radiant over time. Instead, Dr. Alpers recommends professional whitening treatments that are safe, effective, and enamel-friendly.

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Myth #2: Mouthwash Is Always Good for You

Not all mouthwash is created equal. While alcohol-based rinses kill bacteria, they also destroy the good bacteria your mouth needs to stay healthy.

“It’s a lot like your gut,” Dr. Alpers said. “When you eliminate all the bacteria, you throw off your mouth’s natural balance, and that can actually increase your risk of decay and gum disease.”

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In addition, the alcohol dries out the mouth, which makes things worse in Scottsdale’s already dry desert climate. Dr. Alpers recommends skipping traditional mouthwash and choosing a gentler, homeopathic alternative that supports your natural oral microbiome. (More on our recommendations here.)

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Myth #3: You Should Rinse Right After Brushing

This one surprises a lot of people. Rinsing right after brushing, whether with mouthwash or water, actually removes the helpful ingredients in your toothpaste, like fluoride or hydroxyapatite.

Dr. Alpers advises:

“After brushing, simply spit out the excess toothpaste and let the ingredients keep working to protect your teeth.”

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Myth #4: You Can Ignore Your Tongue

Your tongue plays a major role in your oral health, yet it’s one of the most overlooked areas during at-home daily hygiene routines. Bacteria and debris can build up on the tongue, leading to bad breath and even affecting your taste.

Dr. Alpers and the hygienists at Alpers Dentistry recommend using a tongue scraper daily for a cleaner, fresher mouth.

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Myth #5: Sparkling Water Is a Healthier Drink for Teeth

While many people love carbonated beverages for the flavor and fizz, the acid in these drinks can erode enamel, especially if you sip them all day.

“Carbonation lowers the pH in your mouth,” Dr. Alpers explained. “That acid weakens enamel, which can make teeth more prone to staining and sensitivity.”

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If you enjoy sparkling water or lemon water, try not to overdo it, and rinse with plain water afterward to neutralize acids.

Why It Matters

In Scottsdale, where bright, confident smiles are part of the lifestyle, these myths can do more harm than good. Between the city’s dry climate, emphasis on cosmetic dentistry, and active community, knowing the truth about oral health helps patients protect their investment in their smile and their long-term health.

As trends and misinformation continue to spread online, from viral “dental hacks” to over-the-counter whitening fads, having a trusted local expert makes all the difference. As he did on NBC 12, Dr. Kris Alpers (along with the rest of our Scottsdale dental team) helps Scottsdale patients separate fact from fiction through personalized, science-backed care that prioritizes both health and aesthetics.

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Dr. Alpers’ evidence-based approach reflects a simple philosophy: patients deserve to understand the “why” behind their dental care. Whether it’s choosing the right toothpaste, preserving veneers, or managing dry mouth in the desert climate, his focus is always on long-term results and total wellness, not quick fixes or trends.

If you’re looking for a Scottsdale dentist who provides real answers (not myths), expert guidance, and a customized path to a healthy, confident smile, schedule a consultation with Dr. Alpers today.

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About Dr. Kris Alpers

Dr. Kristopher Alpers leads Alpers Family and Cosmetic Dentistry in Scottsdale, AZ, where he and his team focus on personalized, comprehensive care that goes beyond routine checkups. From preventive visits and smile makeovers to advanced restorative treatments, patients trust Dr. Alpers for his modern approach, attention to detail, and commitment to educating the community.

Get the Facts, And a Healthier Smile

If you’re in Scottsdale and want straight answers about your dental health, without the myths, schedule a consultation with Dr. Kris today.

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Dental FAQs: Scottsdale Patients Ask, Dr. Alpers Answers

Does whitening toothpaste damage enamel?

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Yes, many whitening toothpastes contain abrasive particles that wear down enamel and dull porcelain restorations. If you're looking for a safer way to brighten your smile, we offer professional whitening options at Alpers Dentistry that are both effective and gentle on your teeth.

Is mouthwash bad for your teeth?

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Traditional mouthwashes with alcohol kill both harmful and beneficial bacteria, which can disrupt your oral microbiome, especially in Scottsdale’s dry climate. At our office, we recommend homeopathic alternatives and can guide you to the right option during your visit.

Should I rinse my mouth after brushing?

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No, rinsing immediately after brushing washes away protective ingredients like fluoride or hydroxyapatite. Our team can show you the proper brushing technique during your preventive visit to help your toothpaste work harder for you.

What’s the best way to clean your tongue?

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We recommend using a tongue scraper daily to remove bacteria and improve breath freshness. If you're not sure how, just ask one of our hygienists at your next cleaning. They’ll show you the technique that works best.

Can sparkling water harm your teeth?

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Yes, the acidity in carbonated drinks can weaken enamel. We advise limiting these drinks and rinsing with water after. If you're noticing sensitivity, schedule an exam so we can evaluate your enamel health and offer personalized guidance.

How long should you brush your teeth?

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Aim for two minutes, twice a day, spending equal time in all areas of your mouth. Our hygiene team can personalize your home care routine based on your specific needs during your next visit.

Is it better to brush before or after breakfast?

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It’s best to brush before breakfast to remove overnight bacteria. If you've had acidic foods, wait 30–60 minutes to protect your enamel. Have questions about your routine? Bring them to your next checkup. Our team loves to help!

Do electric toothbrushes clean better than manual?

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