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Measured 7 October 2026

Dentists in Brussels: which clinics ChatGPT and Gemini name

Not a single clinic on the Brussels list is named when ChatGPT and Gemini answer from what they already know. Across all answers, the names that keep recurring are UZ Brussel and Cliniques Universitaires Saint-Luc, each in 55 of 120 answers. Once web search is switched on, the listed clinics finally appear, Dentist Brussels in 19 of 48 answers with search.

The models part ways, too. Arts Loi Dental Clinic appeared in 12 of 60 Gemini answers and never once in ChatGPT's, while Dental Treatment Center came up in 10 of 60 ChatGPT answers and never in Gemini's. Some questions draw a blank: asking for clear prices on a tight budget brought up no listed clinic at all, and an urgent toothache surfaced only Winston Dental Clinic, in 1 of 8 answers.

Place
Brussels, Belgium
Measured
Questions asked in
English
Models
ChatGPT (GPT-5.6 Luna) and Gemini (Gemini 3.6 Flash)
Answers
120 (2 runs of 60)
Clinics tracked
6

The clinics we tracked

Each cell counts the answers that named the clinic out of the answers in which we tracked it, then the share and the range it would most likely fall in if we asked again (95 %).

Clinic All answers ChatGPT Gemini Without web search With web search
ALC Dentalalcdental.be 13 of 12011 % · 6–18 % 7 of 6012 % · 6–22 % 6 of 6010 % · 5–20 % 0 of 720–5 % 13 of 4827 % · 17–41 %
Arts Loi Dental Clinicbrusselsdentalclinic.com 12 of 12010 % · 6–17 % 0 of 600–6 % 12 of 6020 % · 12–32 % 0 of 720–5 % 12 of 4825 % · 15–39 %
Dental Treatment Centerbrusselsdental.com 10 of 1208 % · 5–15 % 10 of 6017 % · 9–28 % 0 of 600–6 % 0 of 720–5 % 10 of 4821 % · 12–34 %
Dentist Brusselsdentistbrussels.be 19 of 12016 % · 10–23 % 10 of 6017 % · 9–28 % 9 of 6015 % · 8–26 % 0 of 720–5 % 19 of 4840 % · 27–54 %
iDent Clinicident-clinic.be 11 of 1209 % · 5–16 % 7 of 6012 % · 6–22 % 4 of 607 % · 3–16 % 0 of 720–5 % 11 of 4823 % · 13–36 %
Winston Dental Clinicwinstondentalclinic.be 7 of 1206 % · 3–12 % 5 of 608 % · 4–18 % 2 of 603 % · <1–11 % 0 of 720–5 % 7 of 4815 % · 7–27 %

Where the answers disagree

For these clinics the two ranges do not overlap, so the difference is larger than repeated asking would explain.

With and without web search

  • Dentist Brussels: named in 0 of 72 answers without web search and in 19 of 48 with it.
  • ALC Dental: named in 0 of 72 answers without web search and in 13 of 48 with it.
  • Arts Loi Dental Clinic: named in 0 of 72 answers without web search and in 12 of 48 with it.
  • iDent Clinic: named in 0 of 72 answers without web search and in 11 of 48 with it.
  • Dental Treatment Center: named in 0 of 72 answers without web search and in 10 of 48 with it.
  • Winston Dental Clinic: named in 0 of 72 answers without web search and in 7 of 48 with it.

ChatGPT and Gemini

In the models' words

Lines from the answers, verbatim apart from formatting.

Second opinion for implants or expensive work: Compare Dentist Brussels SA with one independent dentist or a university-hospital service.

ChatGPT (GPT-5.6 Luna), with web search, asked: Which dentists and dental clinics in Brussels, Belgium are considered the most trustworthy?

Arts Loi Dental Clinic (Arts-Loi): Known for fixed prosthetics, implants, and periodontics. Their team uses high-end digital imaging and provides thorough, transparent consultations.

Gemini (Gemini 3.6 Flash), with web search, asked: Which dentists and dental clinics in Brussels, Belgium are considered the most trustworthy?

Other names in the answers

The models brought these up on their own. We did not track them, so there is no share: the number is how many of the 120 answers mentioned the name. Hospitals, insurers, professional bodies and treatment brands appear here as the models wrote them.

  • UZ Brussel 55
  • Cliniques Universitaires Saint-Luc 55
  • CHU Saint-Pierre 40
  • Hôpital Erasme 37
  • INAMI 37
  • Doctoranytime 33
  • Dentius 30
  • Brussels Smile Clinic 25
  • Dentalia 23
  • Invisalign 21
  • Dent Evolution 20
  • UCLouvain 19

The 18 questions

As we asked them. Each line under a question counts its answers and the tracked clinics they named.

Open request for a recommendation

  • What are the best dentists and dental clinics in Brussels, Belgium?

    8 answers, with and without web search. Named: ALC Dental (2 of 8), Arts Loi Dental Clinic (2 of 8), Dental Treatment Center (1 of 8), Dentist Brussels (3 of 8).

  • Which dentists and dental clinics in Brussels, Belgium would you recommend?

    8 answers, with and without web search. Named: ALC Dental (1 of 8), Arts Loi Dental Clinic (1 of 8), Dental Treatment Center (2 of 8), Dentist Brussels (3 of 8), iDent Clinic (1 of 8).

Request for a ranked list

  • Give me a top-10 list of the best dentists and dental clinics in Brussels, Belgium.

    8 answers, with and without web search. Named: ALC Dental (1 of 8), Arts Loi Dental Clinic (2 of 8), Dental Treatment Center (1 of 8), Dentist Brussels (4 of 8).

Who can be trusted

  • Which dentists and dental clinics in Brussels, Belgium are considered the most trustworthy?

    8 answers, with and without web search. Named: ALC Dental (1 of 8), Arts Loi Dental Clinic (2 of 8), Dental Treatment Center (2 of 8), Dentist Brussels (2 of 8), iDent Clinic (1 of 8), Winston Dental Clinic (2 of 8).

  • Which dentists and dental clinics in Brussels, Belgium are most often recommended for the way they treat people?

    8 answers, with and without web search. Named: ALC Dental (2 of 8), Dental Treatment Center (1 of 8), iDent Clinic (1 of 8).

Comparing options

  • Compare the best dentists and dental clinics in Brussels, Belgium by quality, reputation, price and waiting times.

    8 answers, with and without web search. Named: ALC Dental (2 of 8), Arts Loi Dental Clinic (1 of 8), Dentist Brussels (1 of 8), Winston Dental Clinic (1 of 8).

Who the experts are

  • Which dentists and dental clinics in Brussels, Belgium have the strongest reputation?

    8 answers, with and without web search. Named: ALC Dental (2 of 8), Arts Loi Dental Clinic (2 of 8), Dental Treatment Center (1 of 8), iDent Clinic (2 of 8), Winston Dental Clinic (2 of 8).

Alternatives

  • Which dentists and dental clinics in Brussels, Belgium are good alternatives if I'm not happy with the place I go to now?

    4 answers, without web search. No tracked clinic was named.

A patient's constraint

  • I need one place for two things: a check-up with a professional cleaning, and teeth straightening with braces or aligners. Which dentists and dental clinics in Brussels, Belgium cover both?

    4 answers, without web search. No tracked clinic was named.

  • I'm looking for implants to replace missing teeth. Which dentists and dental clinics in Brussels, Belgium would you recommend?

    4 answers, without web search. No tracked clinic was named.

  • Where can I get urgent help with a toothache in Brussels, Belgium?

    4 answers, without web search. No tracked clinic was named.

A trade-off

  • Two things matter to me: teeth straightening with braces or aligners, and clear prices before treatment starts. Which dentists and dental clinics in Brussels, Belgium are best at each?

    8 answers, with and without web search. Named: iDent Clinic (4 of 8).

Exploring options

  • I'm choosing among dentists and dental clinics in Brussels, Belgium and I want urgent help with a toothache. What are my best options?

    8 answers, with and without web search. Named: Winston Dental Clinic (1 of 8).

A problem to solve

  • Which dentists and dental clinics in Brussels, Belgium would you suggest as a replacement? I'm tired of the place I go to now.

    8 answers, with and without web search. Named: Dental Treatment Center (2 of 8), Dentist Brussels (2 of 8).

A specialist need

  • Mine is a demanding case and I need implants to replace missing teeth. Which dentists and dental clinics in Brussels, Belgium have the best specialists for it?

    8 answers, with and without web search. Named: ALC Dental (2 of 8), Arts Loi Dental Clinic (2 of 8), Dentist Brussels (4 of 8), iDent Clinic (2 of 8), Winston Dental Clinic (1 of 8).

Budget

  • I need clear prices before treatment starts and my budget is tight. Which dentists and dental clinics in Brussels, Belgium are on the cheaper side?

    8 answers, with and without web search. No tracked clinic was named.

A specific treatment

  • I need a check-up with a professional cleaning. Which dentists and dental clinics in Brussels, Belgium are a good fit?

    4 answers, without web search. No tracked clinic was named.

Switching dentist

  • I want to switch. Which dentists and dental clinics in Brussels, Belgium do people usually move to?

    4 answers, without web search. No tracked clinic was named.

How Brussels was measured

Each of the 18 questions went to ChatGPT and to Gemini, in 2 separate runs; 12 of them were asked twice, with the model's web search off and on. A question that itself named a clinic is left out, since its answer would name that clinic by force. The clinics we tracked are the ones we chose to measure in Brussels and the clinics they compete with for the same patients.

Ansmeter Benchmark v2.0, methodology 2026.10, prompt library 2026.10-service-voice. The method and its limits: Methodology. The table as a file: data.csv.

We ran this measurement on our own initiative; no clinic asked for it or paid for it. If a clinic's name or website is wrong here, write to us and we will correct it.

All 86 cities and every clinic