Instituto AreLuna
According to our open methodology, this clinic scored 66.7/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #3 of 15 ranked clinics · Last checked: 24 September 2026
Positions by Rating Profile
- Overall Transparency & Trust#366.7/100
- Best for Expats#268.3/100
- Best for Dental Implants#364/100
- Best for Emergency Dental Care#275.3/100
- Best Price Transparency#445.5/100
- Best English-speaking Clinics#272.7/100
- Best for Families / Children#275.5/100
- Sleep Dentistry (GA / deep sedation)not ranked
General Anaesthesia & Deep Sedation
Whether the clinic documents treatment under general anaesthesia or deep / twilight sedation — "sleep dentistry", where the patient is asleep and unaware (does not feel, see, or hear the procedure). Ordinary conscious sedation, where the patient stays awake and responsive, does not count here. This is informational and does not affect the transparency score.
- ? General anaesthesia / deep sedation (sleep dentistry) — Not verified No anaesthesia/sedation info found on site (institutoareluna.pt)
Summary
Dental and aesthetic clinic in Porto with units on Rua de Júlio Dinis (Mota Galiza) and Rua de Faria Guimarães (Marquês). Offers implantology (All-on-4), orthodontics, oral surgery, pediatric and aesthetic dentistry plus facial harmonization. Runs a dental-tourism program for international patients with multilingual assistance and publishes WhatsApp contact. High directory rating (5.0). Website Portuguese only; prices not published.
Strengths
- Information Transparency: 18 of 20 points.
- Reputation & Reviews: 17.5 of 20 points.
- Medical Infrastructure: 13 of 15 points.
- Communication & Service: 8.5 of 10 points.
- No red flags identified in public sources.
Weaknesses
- Price Transparency: 0 of 15 verifiable points (missing: prices or price ranges published; cleaning price listed; filling price listed; crown price listed; implant price listed; consultation price listed; x-ray / imaging price listed)
- AI & Search Visibility: 3 of 8 verifiable points (missing: mentioned for: best dentist Porto; mentioned for: English speaking dentist Porto; mentioned for: dental implants Porto; mentioned for: emergency dentist Porto; mentioned for: Porto dental clinic for expats)
Score Breakdown
Every criterion below is scored from public sources. ✓ verified yes · ✗ verified no / not found · ◐ partial · ? unverified (scores 0, not a negative finding).
Information Transparency
Whether basic facts about the clinic - its team, premises, services, and location - are publicly verifiable.
Price Transparency
Whether patients can estimate costs before visiting. Published price ranges count; exact prices are not required.
Reputation & Reviews
Public review signals. The Google rating is adjusted with a Bayesian prior (rating 4.0, weight 25) so a 5.0 from a handful of reviews does not outrank a 4.8 from hundreds.
| ✓ | Google rating (Bayesian-adjusted) as of 2026-08-25 [instituto-areluna-refresh] | 6/6 |
| ✓ | Google review volume as of 2026-09-24 [instituto-areluna-deepen-10] | 3/3 |
| ✓ | Review recency Newest dated review 2026-09-23 [instituto-areluna-deepen-11] | 3/3 |
| ✓ | Clinic responds to reviews Owner replies to reviews, including negative ones, with dated responses [instituto-areluna-deepen-12] | 2/2 |
| ✗ | No recurring complaints Several low reviews complain about pricing: charges far above a quote, prices above the norm [instituto-areluna-deepen] | 0/2 |
| ✓ | No suspicious review patterns Fifteen Google reviews read: the newest four arrive on four different days (2026-09-23 to 2026-09-30), the texts are individual, and most of the accounts read carry 2-707 reviews; the owner replies to critical reviews. [instituto-areluna-deepen-15] | 2/2 |
| ✓ | Active Facebook presence [s1] | 1/1 |
| ✗ | TripAdvisor presence No TripAdvisor listing found; no link from the site or Google listing [instituto-areluna-deepen-2] [instituto-areluna-deepen-13] | 0/0.5 |
| ✓ | Other review platforms Doctoralia page managed by the institute, with its own description; no opinions yet. [instituto-areluna-g7] | 0.5/0.5 |
Medical Infrastructure
The range of publicly documented equipment and services. This measures documented availability, not clinical quality.
| ✓ | On-site X-ray Listed as a category on the clinic's Google Business Profile [instituto-areluna-deepen-14] | 2/2 |
| ? | CBCT (3D imaging) | 0/2 |
| ✓ | Implantology [s1] | 2/2 |
| ✓ | Orthodontics [s1] | 2/2 |
| ✓ | Oral surgery [s1] | 2/2 |
| ✓ | Pediatric dentistry [s1] | 1.5/1.5 |
| ✓ | Emergency care Emergency consultation offered as a contact-form option [instituto-areluna-deepen-3] | 1.5/1.5 |
| ✓ | Works with international patients [s1] | 2/2 |
Communication & Service
How easy it is to contact the clinic, get answers, and book - especially for international patients.
| ✓ | WhatsApp / LINE available [s1] | 2/2 |
| ? | Response speed | 0/1.5 |
| ✓ | English spoken Clinic states its team speaks English, French and Spanish [instituto-areluna-deepen-4] | 2.5/2.5 |
| ✓ | Pre-visit consultation possible Online contact form and WhatsApp to request a consultation [instituto-areluna-deepen-3] | 1.5/1.5 |
| ✓ | Clear service explanations [s1] | 1/1 |
| ✓ | Convenient opening hours [s1] | 1.5/1.5 |
AI & Search Visibility
Whether the clinic is discoverable when patients search - including via AI assistants. Checked with fixed queries: "best dentist Porto", "English speaking dentist Porto", "dental implants Porto", "emergency dentist Porto", "Porto dental clinic for expats".
| ✗ | Mentioned for: best dentist Porto Not present in the top web results for "best dentist Porto, Portugal" on 2026-09-24. [instituto-areluna-deepen-5] | 0/1 |
| ✗ | Mentioned for: English speaking dentist Porto Not present in the top web results for "English speaking dentist Porto, Portugal" on 2026-09-24. [instituto-areluna-deepen-6] | 0/1 |
| ✗ | Mentioned for: dental implants Porto Not present in the top web results for "dental implants Porto, Portugal" on 2026-09-24. [instituto-areluna-deepen-7] | 0/1 |
| ✗ | Mentioned for: emergency dentist Porto Not present in the top web results for "emergency dentist Porto, Portugal" on 2026-09-24. [instituto-areluna-deepen-8] | 0/1 |
| ✗ | Mentioned for: Porto dental clinic for expats Not present in the top web results for "Porto, Portugal dental clinic for expats" on 2026-09-24. [instituto-areluna-deepen-9] | 0/1 |
| ✓ | Structured data on website JSON-LD on the homepage declares the type Dentist (alongside Person, WebSite). [instituto-areluna-r6s3] | 1.5/1.5 |
| ? | Google indexing quality | 0/2 |
| ✓ | Dedicated service pages [s1] | 1.5/1.5 |
Licensing & Credentials
Whether the clinic publishes its operating licence and the dentists working there together with their professional licence numbers. A verified “not published” is recorded as a red flag; data we have not checked yet is shown as unverified and carries no penalty.
Clinic operating licence: Registo N.º 161637; Licença N.º 21593 (ERS - Clínicas ou consultórios dentários, Licenciada) (ERS open registry, searched 'AreLuna' — exact address match (Rua Júlio Dinis, Porto) The clinic's own site publishes the same two numbers in its own labelling — "ERS Registo E161637", "Licença 21593/2022" — which is where this card's value came from; the value above is the same registration as the ERS record holds it, with the licence state. (Value, note and the ERS source copied from the twin card portugal-dental on 2026-09-10.)) [s1] [instituto-areluna-lic]
Dentists & professional licences
Red Flags
No red flags identified in the public sources we reviewed.
Data We Could Not Verify
- Medical Infrastructure: CBCT (3D imaging)
- Communication & Service: Response speed
- AI & Search Visibility: Google indexing quality
Unverified items score 0 points but are not treated as negative findings. If you can document any of them, please send a correction.
Contact Information
| Website | https://www.institutoareluna.pt/ |
|---|---|
| Phone | +351 220 430 090 |
| +351 910 098 226 | |
| https://www.facebook.com/institutoareluna | |
| Google Maps | Map listing |
| Address | Rua de Júlio Dinis 190, 4050-027 Porto, Portugal |
Contact details are provided for identification only and may change; verify with the clinic directly.
Sources
| ID | Source | What it supports | Accessed |
|---|---|---|---|
| s1 | https://www.institutoareluna.pt/ | Clinical-staff section of the clinic's own site lists 'Dr. Marcos Kawasaki: OM 75498' (displayed as 'OM', not 'OMD', as shown on the site). | 2026-09-24 |
| s2 | https://docdental.pt/clinicas-dentais/porto/ | 5.0 rating from ~354 reviews | 2026-07-14 |
| instituto-areluna-refresh | https://www.google.com/maps/place/Instituto+Areluna/@41.1507244,-8.… | Google rating 4.9 (525 reviews) as of 2026-08-25 (rating was 5, reviews was 354) | 2026-08-25 |
| instituto-areluna-lic | https://www2.ers.pt/dmz/pesquisa/DetalheEstabelecimento.aspx?id=466083 | ERS record for INSTITUTO ARELUNA (entity Instituto AreLuna Medicina Dentária Avançada, Lda): Registo N.º 161637, Licença N.º 21593 (Clínicas ou consultórios dentários), Estado Licenciada; Responsável Técnico Arethuza Carolina Brochado Luna (Ordem dos Médicos Dentistas) | 2026-08-25 |
| instituto-areluna-deepen | https://www.google.com/maps?cid=14858765757533335610&hl=en | Lowest-sorted read: 1★ 2026-03-06 "Valor de orçamento pelo WhatsApp 5000€ Valor que a clínica me cobrou presencialmente 25.000€"; 1★ 2025-05-23 "tem preços acima da norma"; 1★ 2026-06-09 removal fee "que considerei elevado" | 2026-09-24 |
| instituto-areluna-deepen-2 | https://www.tripadvisor.com/TypeAheadJson?action=API&query=Institut… | Name+city search returned no matching dental business, only unrelated institutes/attractions | 2026-09-24 |
| instituto-areluna-deepen-3 | https://www.institutoareluna.pt/contato | Contact-form subject dropdown includes "Consulta de Emergência" alongside booking and treatment-info requests | "Agendar Consulta" button, direct WhatsApp link, and a contact form with "Agendar Consulta" as a subject option | 2026-09-24 |
| instituto-areluna-deepen-4 | https://www.institutoareluna.pt/turismo-dentario | "A nossa equipa é fluente em várias línguas, incluindo inglês, francês e espanhol. Todo o atendimento e comunicação podem ser feitos na sua língua de preferência." | 2026-09-24 |
| instituto-areluna-deepen-5 | search:best dentist Porto, Portugal | Web search on 2026-09-24: results 1–9 were www.whatclinic.com (x2), www.yelp.com (x4), perfeito-smile.com, www.booking.dentist, www.dentavacation.com; the clinic's site and name were not among them. | 2026-09-24 |
| instituto-areluna-deepen-6 | search:English speaking dentist Porto, Portugal | Web search on 2026-09-24: results 1–9 were www.whatclinic.com (x2), www.expatica.com, vita-center.com, englishspeakingdentists.com, oportoblog.com, en.wikipedia.org (x2), smilejet.app; the clinic's site and name were not among them. | 2026-09-24 |
| instituto-areluna-deepen-7 | search:dental implants Porto, Portugal | Web search on 2026-09-24: results 1–9 were www.whatclinic.com (x3), smile-porto.com (x2), perfeito-smile.com (x2), www.123.clinic (x2); the clinic's site and name were not among them. | 2026-09-24 |
| instituto-areluna-deepen-8 | search:emergency dentist Porto, Portugal | Web search on 2026-09-24: results 1–9 were www.whatclinic.com (x2), www.dentista.com.pt, www.expatica.com, oportoblog.com, en.wikipedia.org (x2), vita-center.com, smilejet.app; the clinic's site and name were not among them. | 2026-09-24 |
| instituto-areluna-deepen-9 | search:Porto, Portugal dental clinic for expats | Web search on 2026-09-24: results 1–9 were imin-portugal.com, www.expatica.com, www.expatfocus.com, portodentalrating.com, vita-center.com, treatmentsinternational.com, perfeito-smile.com, viscura.org, newholidays.co.uk; the clinic's site and name were not among them. | 2026-09-24 |
| instituto-areluna-deepen-10 | https://www.google.com/maps?cid=14858765757533335610&hl=en | Google listing 2026-09-24: 4.9 from 537 reviews; histogram 5★ 524 / 4★ 4 / 3★ 1 / 2★ 1 / 1★ 7; newest review 2026-09-23 | 2026-09-24 |
| instituto-areluna-deepen-11 | https://www.google.com/maps?cid=14858765757533335610&hl=en | Newest-sorted read: most recent review dated 2026-09-23 | 2026-09-24 |
| instituto-areluna-deepen-12 | https://www.google.com/maps?cid=14858765757533335610&hl=en | Owner reply dated 2026-01-29 to a 1-star review: "Agradecemos por partilhar a sua experiência e lamentamos sinceramente..." | 2026-09-24 |
| instituto-areluna-deepen-13 | https://www.institutoareluna.pt/ | Site's only social link is Facebook; no TripAdvisor link on site or Google listing | 2026-09-24 |
| instituto-areluna-deepen-14 | https://www.google.com/maps?cid=14858765757533335610&hl=en | Google Business Profile categories include "Dental radiology"; the website does not contradict this | 2026-09-24 |
| instituto-areluna-deepen-15 | https://www.google.com/maps?cid=14858765757533335610&hl=en | Google listing "Instituto Areluna", read 2026-10-01 in four review orders: 4.9 from 540 reviews (1★ 7 / 2★ 1 / 3★ 1 / 4★ 4 / 5★ 527); 15 distinct reviews dated 2023-12-12 to 2026-09-30, one from a single-review account and two without a shown review count | 2026-10-01 |
| instituto-areluna-r6s3 | https://www.institutoareluna.pt/ | Homepage HTML read on 2026-10-02: JSON-LD types Dentist, Person, WebSite | 2026-10-02 |
| instituto-areluna-g7 | https://www.doctoralia.com.pt/clinicas/instituto-areluna | Doctoralia page "Instituto Areluna", read 2026-10-05: a page managed by the institute, with its own description (implantology and aesthetics, two units in the Porto district); it shows no address and no patient opinions yet | 2026-10-05 |
Change History
| Date | Change |
|---|---|
| 2026-10-02 | Read the clinic's own website (homepage, robots.txt, sitemap and service pages) for site structure: business structured data present. |
| 2026-10-01 | Read 15 of the clinic's Google reviews in four orders on 2026-10-01: no burst, no template wording and no run of single-review accounts, so no suspicious review pattern is recorded. |
| 2026-09-24 | Search visibility checked on 2026-09-24 for five Porto, Portugal queries — "best dentist Porto, Portugal", "English speaking dentist Porto, Portugal", "dental implants Porto, Portugal", "emergency dentist Porto, Portugal" and "Porto, Portugal dental clinic for expats": not present for "best dentist Porto, Portugal", "English speaking dentist Porto, Portugal", "dental implants Porto, Portugal", "emergency dentist Porto, Portugal" and "Porto, Portugal dental clinic for expats". |
| 2026-09-24 | Re-read on 2026-09-24: the clinic's website (treatments, contact and dental-tourism pages) and its Google listing. Recorded: an emergency-consultation option on the contact form, a multilingual team including English, an online consultation request, and no TripAdvisor listing. On-site X-ray is documented via the clinic's Google Business Profile category. Low reviews repeating a complaint about pricing are recorded as a recurring complaint. Google listing now shows 537 reviews (4.9), newest 2026-09-23, with owner replies, including to negative reviews. Still unverified: an on-site CBCT/3D scanner (the site's "3D digital scan" wording for guided implant surgery does not name the equipment) and the review pattern (many recent reviews come from accounts with a single review). |
| 2026-09-10 | Twin parity 2026-09-10 (clinicLicense): both cards published the same two numbers (161637 and 21593) — this card in the clinic's own footer labelling, the twin as the ERS establishment record states them, with the tipologia and the Estado Licenciada that a footer cannot carry. The cell now carries the register's reading on both cards; no number changed. |
| 2026-08-25 | License verification 2026-08-25: clinic license and all 4 named doctors' OMD registration numbers found self-published on the clinic's own site (institutoareluna.pt), which lists individual OMD numbers per clinician; not independently cross-checked against the OMD public registry due to time. |
| 2026-08-25 | Re-verification 2026-08-25: confirmed website, address and phone; Google rating updated to 4.9 (was 5) and review count increased to 525 (was 354); added geo coordinates. |
A question or a correction?
Have a question, a suggestion, or a correction to this page? Get in touch — we read every message. Verified data corrections are reviewed against sources and applied with a public change-history entry.