A dental ad answers to two rulebooks at once: the ad platforms' policies, and your state dental board's advertising rules. Most dental copy that runs into trouble breaks a rule the writer never knew existed. Here are the claims that cause it, with the rewrites that fix them. For the short version of what's checked, see the dental audits page; this is the deep dive.
TradesAd's dental checks are built on California and Texas board rules, the two baselines encoded in the library (CA Business & Professions Code 1680; TX Occupations Code 254.002), with board texts researched across 15 states. Dental advertising rules vary by state beyond any baseline, so treat this as a pre-screen, not legal advice, and check your own board's current rules. With that said, the patterns below cause the overwhelming share of dental ad problems, and they repeat in practice after practice.
Before: "Dental implants guaranteed for life! Crowns guaranteed — no exceptions."
After: "Dental implants planned and placed in-house. Book a consultation and we'll tell you honestly whether implants are right for you."
California's dental board rules expressly prohibit advertising to guarantee any dental service, and the reasoning travels well beyond California: treatment results depend on the patient, so a guaranteed outcome is a promise no practice can keep. Warranties on materials are a different conversation from guaranteed results, and ad copy that blurs the two is where practices get caught.
Before: "Painless dentistry! Completely pain-free root canals, guaranteed."
After: "Nervous about treatment? We offer sedation options and a gentle, unhurried approach. Ask us how we help patients stay comfortable."
"Painless dentistry" is expressly prohibited in California for a simple reason: pain varies by patient, so the claim is unverifiable by definition. Notice what the rewrite does. It doesn't promise an experience; it describes what the practice actually offers (sedation options, a calmer process) and invites a conversation. If your practice offers sedation, describe the option factually. The moment copy promises the patient will feel nothing, it has crossed the line from description into guarantee.
Before: "Get a perfect smile in one visit! Whitening guaranteed — up to 8 shades whiter, instantly."
After: "Professional teeth whitening, in-office or take-home. At your consultation we'll talk through the results you can realistically expect."
Texas rules prohibit claims that create unjustified expectations, and specific cosmetic outcome promises are the textbook case: a perfect smile, in one visit, guaranteed. Shade counts presented as promises ("8 shades whiter") fall into the same trap. They state a result as a certainty when the honest answer is "it depends on your teeth." The platforms pile on from the other direction: an outcome claim with no substantiation behind it is an unreliable claim under Google's and Meta's misrepresentation rules, board or no board.
Before-and-after photos sit in this same category. Used honestly, they're the most persuasive asset a cosmetic practice has. Used as a promise, they're a violation with pictures. Run real patients only, make sure the cases shown are realistic rather than your single best outcome, and caption them plainly: individual results vary, and treatment plans differ. A photo presented as what you will get is a claim, and it will be judged as one.
Before: "20% off cleanings — this month only! Call now."
After: "20% off our $299 cleaning through October 31: $239. New and existing patients welcome."
Texas requires the total fee behind a dental discount to be disclosed, because a percentage off an unstated price tells the patient nothing. Twenty percent off $150 and twenty percent off $400 are very different offers wearing the same headline. The rewrite fixes it with arithmetic: state the full fee, apply the discount, show the number the patient will actually pay, and give the end date. That last detail matters too. A "this month only" offer that never ends is a false-urgency problem on top of a disclosure problem.
Before: "FREE exam and X-rays for new patients! Ask us for details."
After: "Free exam and X-rays for new patients. No purchase required. One per patient; not valid with other offers."
The FTC's long-standing rule on "free" is that all the terms and conditions should be set out clearly and conspicuously at the outset of the offer. "Ask us for details" is the exact pattern that guidance rules out. New-patient specials are legitimate and effective; they just have to say who qualifies, what is included, and what the limits are, right next to the word "free," in the ad itself.
Before: "The best dentist in Dallas. The #1 choice for families."
After: "4.9 stars on Google from 800+ patient reviews (Oct 2026). Now welcoming new patients in Dallas."
Dental practices don't get an exemption from the platforms' general rules, and "best dentist in [city]" is the single most common risky sentence in dental advertising. A superlative needs a verifiable source: a named ranking with a date, or a review count with its platform. The rewrite keeps the brag and makes it provable, which is all the platforms and the boards ever asked for.
Agencies ask about this one constantly, usually assuming the number must appear in the ad. For dental, the researched answer surprises people: across the 15 states whose board texts we've checked, none currently require the license number in advertising. Our license check detects known formats (Colorado's DEN. numbers, for example) and tells you plainly when a state doesn't require one. It is a format check only. It never verifies that a license is valid or active, and it never guesses when the format is unconfirmed. If your state board has its own advertising rules beyond the number, those are yours to check, and the check is worth doing once a year.
When an audit hands you several flags at once, sequence the repairs. Board-prohibited claims come first, because there is no rewrite that saves them: a guarantee or a "painless" promise has to come out entirely, not get softened. Platform claims come second, and those usually survive as rewrites, because a superlative becomes a review count and a discount becomes arithmetic. Disclosure fixes come last and take the least time: the total fee next to the percentage, the conditions next to the word "free." Ten minutes of editing in that order clears most dental ads we see, and the surviving copy is usually stronger, not weaker, because provable claims convert better than promises.
On the audit page, pick the Dental vertical before you paste. A dental ad then runs against 66 US patterns: the full general rule book (superlatives, guarantees, pricing, free offers, editorial) plus the four dental-specific checks above. The vertical matters. It means a dental ad is judged by dental rules, and it also means the dental checks stay quiet on other industries' copy, so a plumber's "20% off drain cleaning" is never mistaken for a dental fee violation. Every flag quotes the full sentence, names the policy, and carries fix guidance, and the whole library behind it is published on the rules page if you want to read the standard before you're judged by it.
Same closing note as everywhere on this site: the audit is a pre-screen, not legal advice and not a promise of approval. State board rules vary, boards update them, and the platforms make the final call. What the audit gives you is the flagged sentence before a reviewer or a board complaint gives it to you first.
Free Starter plan. Sixty seconds. Dental vertical preselected, all 66 patterns, every flag with the policy named and the fix attached.
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