Performance Max for dental practices: when to use it, and when not

Performance Max for dental practices is Google's automated campaign type that shows your ads across Search, Maps, YouTube, Gmail and the wider web from a single campaign, choosing where to spend based on the goal you give it. It can find patients a keyword campaign would miss. It can also spend a lot of money on placements that never produce a booking. Whether it suits your practice depends on one thing above all: whether Google can see which clicks turned into real patients.

What does Performance Max do?

Google describes Performance Max as "a goal-based campaign type that allows you to access all Google Ads inventory", covering YouTube, Display, Search, Discover, Gmail and Maps through one campaign. Instead of choosing keywords and placements yourself, you supply three things:

1. Conversion goals. The actions you want, such as a booking form sent or a call made.
2. Assets. Headlines, descriptions, images, logos and video. Google mixes them into ads for each placement, and Google says the system can generate additional variations.
3. Audience signals. Hints about who your patients are. They guide the system's learning but do not limit it to those people.

Google then decides who sees which ad, where, and at what bid.

How do Performance Max campaigns work alongside search campaigns?

They run side by side. Google says Performance Max complements keyword search campaigns, and that search campaigns with an exact match keyword are prioritised over Performance Max when a search matches that keyword exactly. So if you have an exact match keyword for "dental implants chester" in a search campaign, that campaign serves for that search. For everything else, Performance Max can step in.

What are the benefits of Performance Max?

The two benefits Google emphasises are reach and automation:

• Reach. One campaign covers every Google channel, including YouTube and Maps, which a small practice would rarely set up individually.
• Automation. Bids, placements and ad combinations are adjusted continuously based on conversion data, which saves management time if, and only if, the conversion data is good.

The trade-off is control and visibility. You see less about where your money went than in a search campaign, and the system optimises for whatever you call a conversion, not for what you meant.

Is Performance Max worth it for a dental practice?

It can be, when these conditions hold:

• Your conversion tracking measures real enquiries, ideally linked to bookings. Google's own Performance Max FAQ says "AI is only as good as the data you put into it" and recommends enhanced conversions for leads to connect offline results back to the ads account.
• You already have a search campaign that works, so you know what a profitable click looks like and have a baseline to compare against.
• You have good creative: real photos of your practice and team, and ideally a short video. Without your own video, Google may build one from your images.
• The budget can survive a learning period without you panicking and changing everything in week two.

It is usually a poor first campaign for a practice new to Google Ads. Start with a tightly controlled search campaign on the treatments you most want, prove the numbers, then test Performance Max against it. Our guide to Google Ads for dentists covers that first campaign and the calculation that decides what you can afford per click.

Performance Max vs search campaign: which should a practice start with?

How long does it take for Performance Max to work?

Allow at least six weeks. Google's optimisation tips say to "run new campaigns for at least six weeks" so the system can gather enough data, and warn that frequent changes to budget or bid strategy can reset the learning phase. If your budget cannot carry six weeks of uneven results, it is not the right time for Performance Max.

The settings to check before you launch

Performance Max ships with defaults that suit a large retailer better than a dental practice. Go through these before spending anything.

Final URL expansion

Google says Final URL expansion is on by default, which lets the campaign send people to any page on your site it thinks fits. For a practice that can mean ad clicks landing on a blog post, a careers page or your privacy policy. Either turn it off and send traffic to the treatment pages you choose, or use URL exclusions to block sections such as /blog, /careers and /news.

Negative keywords and brand exclusions

Performance Max now supports campaign-level negative keywords, and Google says they apply to Search and Shopping inventory only. Add the same negatives you use in search: jobs, courses, salary, DIY, free and anything you do not offer. Use brand exclusions if you do not want Performance Max claiming searches for your own practice name, which your organic listing often wins anyway.

Location

Set the campaign to the towns or radius you actually serve. Patients rarely travel far for routine treatment, and broader targeting mainly buys clicks from people who will not come.

Conversion goals

Only count actions that represent a real enquiry. If page views or "clicked the contact page" are set as conversions, Performance Max will find you lots of cheap page views. Calls of a meaningful length and completed booking forms are the minimum. Uploaded bookings are better.

Assets

Google recommends at least 15 headlines, 5 descriptions, 7 images and a video for a strong asset group, and notes that your own video matters if you want to minimise spend on auto-generated videos on YouTube. Review any text or images Google generates for you. Your ads must still meet GDC and ASA standards, and an automatically written headline promising results is your responsibility, not Google's.

Performance Max placements and reporting

The common complaint about Performance Max was that it was a black box. Google has since added a search terms report for Performance Max and channel performance reporting that shows how results split across Search, YouTube, Display and the other channels. Use both:

• Search terms report: read it weekly in the first month and add negatives for anything irrelevant.
• Channel performance: if most spend goes to Display or YouTube and enquiries come from Search, that tells you the campaign is buying reach rather than patients.
• Asset performance: replace weak images and headlines, but not so often that the campaign never settles.

Health targeting rules to know

Google treats health as a sensitive area for personalised advertising. Its health in personalised advertising policy restricts personalised ads relating to invasive medical procedures, including surgical procedures and injections. For a practice, that may affect audience-based targeting for treatments such as implants or facial aesthetics, even where ordinary search ads are fine. Check the policy before building audience signals around patient lists, and remember that uploading patient contact details to any ad platform is processing personal data, which needs a lawful basis and a mention in your privacy notice.

Do paid ads actually work for dental practices?

They can, when the economics add up and someone answers the phone. Paid ads buy visibility, not patients. A campaign works when the cost of a booked patient is comfortably below what that patient is worth to you, and that depends as much on your landing page and reception team as on the campaign type. Performance Max does not change that equation. It only changes how much of the work Google does for you and how much you can see.

Before spending on any campaign, check what you already win organically. Paying for searches where your practice already appears in the map pack and top results is one of the most common wastes in dental advertising, and a free search audit shows where you stand.

A sensible Performance Max test for a practice

1. Get a search campaign profitable first, with conversion tracking you trust.
2. Set up enhanced conversions for leads or offline conversion uploads so bookings feed back to Google.
3. Create one Performance Max campaign for one treatment, with its own landing page.
4. Turn off or restrict Final URL expansion, add negatives and brand exclusions, set a tight location.
5. Supply real photos and a short video of your own.
6. Leave it alone for six weeks, apart from adding negatives from the search terms report.
7. Compare cost per booked patient with your search campaign. Keep whichever is cheaper per booking, or run both if both pay.