The question is usually asked as a choice: SEO or Google Ads. It is the wrong shape. One is a locum. The other is an associate. You can hire both. You should not pay them as if they were the same person.
This page is the comparison. The unpaid jobs themselves are in SEO for dentists. Paid as one channel among seven is in digital marketing for dentists.
They are not two brands of the same thing
An ad is a locum covering a shift: useful tonight, gone in the morning, billed by the hour. Unpaid search is an associate you trained: slower to arrive, then on the rota whether or not you wrote a cheque this week.
Both can sit on the same results page. Only one of them is still there if the card is declined. Treating them as two flavors of “getting found on Google” is how a practice funds the locum forever and never hires.
What you buy when you buy an ad
You buy a labeled slot, for a query you chose, for as long as you bid enough. The engine is honest about it: Sponsored. The patient who taps it may still book. Many scroll past the label on purpose.
That is not a moral problem. It is a product problem. Ads are a meter. They are the right meter when the book has holes this week, when a second chair is sitting empty, when a new location has no history yet. They are the wrong meter for “we should be findable in general.”
Turn the campaign off and the slot vanishes. There is no residual. That is the deal. Anyone selling ads as an asset is selling a taxi ride as a car.
What you build when you do unpaid search
You build a page, a profile, a set of listings that the engine is willing to show without a bid. The first months are labor. Then the cost is upkeep: keep the hours true, keep the answers true, fix the crawl when a template breaks.
A treatment URL that already ranks does not need a new invoice to keep sending the next patient. That is the whole economic argument. It is also why a vendor who only sells ads will always find a reason the unpaid work can wait.
Our own data
A page we built holds position one and the featured snippet ahead of the official Invisalign site, with one backlink. That URL did not stop producing when the calendar month rolled. An ad on the same query would have.
What a click actually costs
Ahrefs’ estimated cost-per-click, Google US, August 2026:
| Query | US monthly searches | Est. CPC |
|---|---|---|
| emergency dentist | 91,000 | ~$3 |
| dental implants | 230,000 | ~$4 |
| invisalign | 434,000 | ~$2.50 |
Those are national estimates, not your city’s exact-match auction. A competitive metro will bill more. A booked implant still pays for a lot of them. A click that bounces from a homepage pays for nothing, a hundred times.
Unpaid search has a cost too: hours or a retainer. It is front-loaded. Comparing one month of ads to one month of SEO as if they were the same unit is how both look expensive and neither is judged.
When ads are the right tool
- A new location. The profile is empty, the pages have no history. Buy the week while the unpaid work starts. Do not buy the year.
- Spare capacity you can take this month. Emergency slots, a hygiene column, a surgeon’s day. Bid on the query that names that gap. Stop when the column fills.
- A high-value treatment you want to pull forward. Implants, aligners — if the landing page already answers cost and time. If it does not, you are paying to send people to a brochure.
Ads are a bridge. In our channel stack, they come on only after the site converts and the profile is alive — and only if volume is still short.
When they subsidize a bad page
The most expensive ad in dentistry is a good bid on a page that does not answer. The patient paid attention. The page told a founding story. They left. You still paid.
Do not run a dollar toward a URL that would not deserve to rank unpaid. The test is simple: would this page be worth showing if the engine were not being paid? If the answer is no, fix the page. The meter will not make it true.
Keep two ledgers
Cost per click is a vendor metric. Cost per booked visit is a practice metric. Unpaid search should be judged the same way: retainer or hours, divided by new patients from unpaid search, against the lifetime value of those cases. The arithmetic is in ROI for dental practices.
If the books say “marketing leads” and cannot split paid from unpaid, you will keep the louder channel and starve the one that compounds. Split them. Review both monthly. Cut the one whose cost per booked visit does not make sense. That is the choice — not SEO versus ads as a personality test.