Most dental practices that try Google Ads make the same first move. They pick a campaign type, type in a list of keywords, let Google choose how loosely to match them, and hope the budget finds patients. Some of it does. A lot of it goes to searches that were never going to book.
There is a better order of operations, and it starts with a simple observation. The searches at the very bottom of the funnel, the ones from people ready to book, are not all alike. Some of them you can predict before you spend a dollar. Others nobody could predict, and there are far more of those.
In Chapter 2 we said a new dental account should start at the bottom of the funnel, with the people ready to book. In Chapter 5 we built the keyword list. This chapter is about how to put that list to work: which searches to target first, how to protect them, and when to let Google go looking for the ones you could never have written down.
We call it the inside-out approach. Protect the searches you know first. Then, once Google has learned what a new patient looks like for your practice, send it out to find the ones you don't.
The Bottom of the Funnel Has Two Halves
Picture the bottom of the funnel as a target. At the center are the searches you already know will book: the ones that show up in every market, every year, from people who want a dentist now. Around them is a much wider ring of searches that mean the same thing but are worded in ways nobody would think to put on a keyword list.
Both halves are high intent. The difference is that you can name the searches in the center, and you cannot name the ones outside it. That difference decides how each half should be targeted, and in what order.
The Inside: Dental Searches You Already Know Will Book
The center of the target comes straight out of the keyword families from Chapter 5. These are the service-plus-modifier searches that show up in every market: a service, plus a location, a quality word or a timing word.
In the Phoenix market in September 2026, the biggest of them looked like this:
- "Dentist near me": about 40,500 searches a month.
- "Pediatric dentist near me": 4,400.
- "Dental implants near me": 2,900.
- "Dentist phoenix": 2,900.
Urgent searches belong here too, because the person has a problem and wants it fixed by someone nearby. "Dentist for cracked tooth" had about 480 searches a month in Phoenix, and "walk in dentist near me" had 260. Someone typing those is not researching. They are choosing a practice, often that same day.
None of these are secrets. They repeat from one city to the next because that is simply how people look for a dentist. That predictability is exactly what makes them worth protecting first.
The Isolation Campaign Protects the Searches That Matter Most
The searches in the center go into their own campaign. We call it the Isolation campaign. That is our name for it, not a Google setting: a Search campaign that uses exact match only, so each ad shows for the searches you chose and close variations of them, and nothing looser.
Three things make it work.
Small, tightly themed ad groups. Each ad group holds a handful of keywords that mean the same thing, like the different ways people ask for a pediatric dentist near them. That lets every ad group carry ads written for those exact searches, which is what earns the strong ad relevance and Quality Scores we covered in Chapter 4.
Control over position. Because each group of searches sits on its own, you can decide how hard to compete for it. The searches that matter most to your practice, the ones for your most valuable services, can be pushed toward the top of the page, where they get seen and clicked. How to set those bids is Chapter 7.
Clean lessons for Google. This is the part most practices never think about. Every conversion in an exact match campaign comes from a search you deliberately chose. So when Google starts learning what a new patient looks like for your practice, it learns from good examples, not from a mix of good searches and accidental ones.
One more campaign launches alongside it on day one: a brand campaign for your practice name and your dentists' names. Those are the most valuable searches of all, from people who already know you. Keeping them in their own campaign keeps them cheap, keeps a competitor from taking the top spot on your own name, and keeps your brand numbers from flattering the results of everything else.
The Outside: Searches Nobody Could Have Predicted
Here is the catch with the Isolation campaign. There are only so many people searching "dentist near me" in your area. Once you are showing at the top for the searches that matter, there is a ceiling. You can own those searches, but you cannot make more people type them.
Meanwhile, a much bigger group of patients is searching in ways you would never guess. Google has said that "15% of searches we see every day are entirely new." People type what they are feeling, in their own words, often on a phone, often in a hurry.
You can see a small piece of this even in Keyword Planner. In the Phoenix data, alongside the tidy service searches, there were searches like "whys my gum swollen" (about 170 a month), "tooth chipped in half" and "my tooth chipped off for no reason." And those are only the ones common enough to show up in a research tool at all. Once campaigns are running, the search terms report is full of phrasings that have no planner data whatsoever.
Plenty of those people want a dentist today. You will never find them all by writing more keywords. There are too many, they change constantly, and most are too rare to show up in any research. This is the outside of the target, and it is where most of your growth is.
The Exploration Campaign Goes Looking for Them
To reach the outside of the target, you add a second campaign. We call it the Exploration campaign, again our own name: a copy of the Isolation campaign's best work, set up on broad match, with Google's automated bidding in charge.
What goes into it
The Exploration campaign starts small on purpose. Instead of the full keyword list, it gets just the three to five keywords that have proven themselves in the Isolation campaign: the ones bringing in real patient calls and appointment requests at a cost that works for you.
That sounds like too few, but on broad match each keyword stands for a very large set of searches. Google says broad match can take into account "the user's recent search activities," "the content of the landing pages and assets" and "other keywords in an ad group to better understand keyword intent." A handful of broad match keywords can reach thousands of different searches.
Why target CPA is the guardrail
Broad match on its own is a fast way to spend money, which is why it never runs without a bidding strategy holding it in check. Google's own guidance is blunt about the pairing: "It's critical to use Smart Bidding with broad match."
The Exploration campaign uses target CPA, where you tell Google the average cost per conversion you are aiming for, and Google sets the bid for each auction to hit it. Google describes it as adjusting bids "using real-time signals like device, browser, location, time of day," among others. In plain terms, Google is judging the person searching, not just the words they typed. Someone who searches something vague but whose other signals look like a person about to book can still be shown your ad.
Google also notes that "some conversions may cost more than your target and some may cost less." It is an average, and the Isolation campaign is what tells you what a realistic number is. How to set it is Chapter 7.
When to launch it
Timing is everything here. Google will let you start target CPA with no conversion history at all. We don't, because broad match with nothing to learn from pays for anything loosely related to teeth.
The gate we use is about 30 quality conversions a month coming from the Isolation campaign: real calls and appointment requests, measured the way Chapter 1 set up. For most new dental accounts that means launching Exploration in the second or third month. By then, Google has seen enough real new-patient inquiries from your practice to know what it is looking for.
Negative Keywords Decide Whether Exploration Works
Even with target CPA as a guardrail, broad match will bring in searches that are wrong for your practice. Lots of them. The first few weeks of an Exploration campaign are when the negative keyword list from Chapter 5 earns its keep and starts growing fast.
For the first 30 days, check the search terms report every day and add negatives as the waste shows up. After that, keep checking, because it never stops showing up. Negative keywords are never a finished list, and they matter more under broad match and target CPA than anywhere else in the account.
Expect three kinds of searches in particular:
- Other practices' names. Broad match picks up plenty of searches for competitors. They go on your negative list. If you ever decide to target competitors by name, that belongs in its own campaign, and it is a big decision, not something to let broad match do for you.
- The wrong kind of dental search. Jobs, schools, supplies, do-it-yourself and anything else from Chapter 5's list that slipped through.
- Services you don't offer. If you do not place implants or treat children, those searches need to be excluded here, even though they are perfectly good dental searches for someone else.
It helps to think of it like gardening. You feed what is growing well, the searches that turn into patients, and you pull out what is costing you money. Every negative you add also teaches the campaign more clearly what you are looking for.
Isolation and Exploration Work as a Pair
The two campaigns are not a one-time handoff. They balance each other over the life of the account.
The Isolation campaign keeps doing what it does best: holding the top of the page for the searches you know matter most. The Exploration campaign does what Isolation cannot: reaching the much larger set of patients searching in their own words. It is the one that lets a practice grow past the ceiling of its known searches.
Over time, as Exploration takes on more of the account, the Isolation campaign may be scaled back. If a specific search that matters to you starts slipping down the page, Isolation can be turned back up to reclaim that position. The two are adjusted against each other month by month, based on where the new patients are actually coming from.
Only once both are working, with steady conversions and a clean search terms report, does it make sense to move up the funnel into Performance Max and Demand Gen. Those campaigns rely heavily on what Google has already learned about your patients. Launched on an account with no history, they tend to spend without much to show for it. Launched on top of a working Isolation and Exploration pair, they have something real to build on. Chapters 10 and 11 cover both.
Next, Set the Bids That Make Each Campaign Profitable
You now have the structure: an Isolation campaign that protects the dental searches you know will book, a brand campaign that protects your name, and an Exploration campaign that goes looking for the patients you could never have predicted, launched at the right time and kept clean with negatives.
What decides whether that structure makes money is how each campaign is bid. The next chapter covers how to bid the Isolation campaign keyword group by keyword group, what to watch on the page, and how to set a target CPA for Exploration from real numbers rather than guesses. That is Chapter 7, Profitable Bidding: Isolation to Exploration.
If you would rather have this structure built for your practice, it is how we set up every dental account we manage. Our Google Ads management starts at the bottom of the funnel and works outward from there.
