Choosing a dental SEO company comes down to one disqualifying test and six questions, and Google publishes all seven of them. The test is whether the vendor guarantees rankings, because that promise is a reliable signal to walk away. The questions cover what they have done before, what they will do to your site, and whether they will show you. What almost nobody tells you is why every list you are reading right now is written by a company on it, and we will get to that.

One note on what this page is not. We have not ranked any firms, and you will not find a table of ten logos below. We are a health-niche SEO agency, so any list we published would have us near the top of it, and you would be right to discount it. Instead here is the vetting process, sourced to Google rather than asserted by us, so you can apply it to anyone including us.

Why this matters right now

Here is a number from our own keyword research, a pull of 1,341 healthcare keywords in July 2026. The search you just made, “best dental seo companies,” carries a cost per click of $36.34.

That is what agencies are willing to pay for one click from one dentist who is thinking about hiring someone. Not for a patient. For you, at the moment you started looking.

Sit with that for a second, because it explains the whole page you are on. Every result competing for this search has an incentive measured in tens of dollars per visitor, and the cheapest way to win it is to publish a ranked list with yourself at the top. That is not a conspiracy, it is just arithmetic, and it is why the advice on this query is unusually bad.

The good news is that the vetting standard is public and it is not written by anyone selling you services.

The one promise that ends the conversation

Google’s guidance on hiring an SEO is direct about this:

No one can guarantee a #1 ranking on Google. Beware of SEOs that claim to guarantee rankings, allege a ‘special relationship’ with Google, or advertise a ‘priority submit’ to Google.

That is the search engine itself, telling you that a guarantee is a warning rather than a credential.

It matters more than it looks, because a guarantee is the easiest thing to sell to a practice owner who does not have time to evaluate the work. It sounds like confidence. It is the opposite, and one sentence of Google’s documentation is enough to end that sales call.

The 2026 version of the same trick has moved to AI. Vendors now guarantee that ChatGPT will recommend your practice. The research does not support that promise either: a 2026 academic survey of work on optimizing for generative engines concluded that no reviewed technique shows a stable, longitudinal, cross-platform causal effect on organic discoverability. Nobody has shown they can reliably get you discovered. Same promise, newer costume.

What else disqualifies a vendor

Google’s list of warning signs is short and every one is checkable on a first call.

They emailed you out of the blue. Google says to be wary of SEO firms and consultants that email you cold. Every dentist reading this gets several a week.

They will not explain the method. Be careful, Google says, if a company is secretive or will not clearly explain what they intend to do. “Proprietary process” is not an answer, it is the absence of one.

They talk about link schemes. Avoid anyone discussing link popularity schemes or submitting your site to thousands of search engines. That was outdated a decade ago and it now carries risk rather than benefit.

They want you to link to them. Google puts this plainly: you should never have to link to an SEO. If a footer credit link is in the contract, ask why your site is paying rent.

They are billing you for AI files. This one is new and it is on 2026 proposals. Google states that you do not need to create machine readable files, AI text files, or markup to appear in Search, and that creating them will neither harm nor help your visibility or rankings there, because Search ignores them. There is no special schema markup required either. That does not make a vendor dishonest, but it is a fair question, and the answer tells you how current they are.

Their dashboard is presented as Google’s opinion. It is not. Google states that third-party tools do not have access to its internal ranking data and cannot guarantee performance, and that any predictions are the tool’s own. A score is a model. Useful for direction, not a grade issued by Google.

The six questions, and what a weak answer sounds like

These are Google’s, quoted from its guidance on hiring an SEO. We have added what a thin answer sounds like, from sitting on the other side of these calls.

Ask thisWeak answer
Can you show me examples of your previous work and share some success stories?Logos, no numbers, no named outcome
Do you follow the Google Search Essentials (previously known as Webmaster Guidelines)?Unfamiliarity with the phrase
What kind of results do you expect to see, and in what timeframe?A guarantee, or a specific date
What’s your experience in my industry?General small-business work only
How long have you been in business?Vague, or a very new entity
Will you share with me all the changes you make to my site, and provide detailed information about your recommendations and the reasoning behind them?“We handle that”

The last one carries the most weight. A vendor who will not show you every change is a vendor you cannot audit, and you will not discover the problem until you try to leave and find you cannot take the work with you.

For what it is worth, Google describes legitimate SEO work as review of your site content and structure, technical advice, content development, and keyword research. For a dental practice, that mostly means your Google Business Profile, the reviews you gather and reply to, the pages covering implants and emergencies and insurance, and making sure the site can be crawled and loads on a phone in a car park.

How to run the decision in one week

  1. Send the six questions by email before any call. You learn as much from who answers in writing as from what they write. About 20 minutes.
  2. Ask each one what they would do in the first 30 days, specifically. Vague answers here predict vague reporting later. One call each.
  3. Ask what happens if you leave. Who owns the site, the content, the Google Business Profile, the analytics. Get it in writing. About 15 minutes.
  4. Check their own house. Search their business name plus your city. Look at their profile, their reviews, their page speed. About 20 minutes.
  5. Score them against the disqualifiers above before you compare prices. Price is the last question, not the first. About 30 minutes.

So who is best?

Nobody can answer that for you, and the honest version of this page is a process rather than a name.

But there is a real answer to a slightly different question, which is what separates the vendors worth paying from the ones who churn dental practices. It is not technique. Everyone credible is doing roughly the same fundamentals, because those fundamentals are published by Google and there is no secret layer underneath.

The difference is whether they will show you their work. The ones worth keeping hand you the changes, the reasoning, the numbers before and after, and the things that did not work. The ones who churn hand you a dashboard with a score on it and a monthly call about impressions.

That is also the test that survives whatever the next trend is. Guarantees moved from rankings to AI mentions in about eighteen months, and the vendors selling them did not change, only the noun did. A vendor who shows you the raw evidence cannot hide behind either one.

Ask for the evidence. If they cannot show you what your practice looks like today, before they have done anything, they cannot show you what changed.