Impress Porto
According to our open methodology, this clinic scored 55.8/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #12 of 15 ranked clinics · Last checked: 24 September 2026
Positions by Rating Profile
- Overall Transparency & Trust#1255.8/100
- Best for Expats#955.5/100
- Best for Dental Implantsnot ranked
- Best for Emergency Dental Carenot ranked
- Best Price Transparency#346.2/100
- Best English-speaking Clinics#760.2/100
- Best for Families / Children#1257.7/100
- 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 Invisible-aligner orthodontics clinic; no anaesthesia/sedation info found on site (smile2impress.com)
Summary
Porto clinic of the international Impress orthodontics chain, specialising in clear/invisible aligner orthodontics. Website has an English version and an international patient chain. Its Google listing shows a 4.9 rating from 2,728 reviews. Focused on orthodontics rather than a full-service general dental clinic.
Strengths
- Information Transparency: 17 of 20 points.
- Reputation & Reviews: 17 of 20 points.
Weaknesses
- Price Transparency: 3 of 15 verifiable points (missing: 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.
| ✓ | Has a working website [s1] | 4/4 |
| ✗ | Dentist names listed Clinic page describes the medical team generically, no dentist named [s1] | 0/3 |
| ✓ | Dentist specializations listed [s1] | 2/2 |
| ✓ | Real clinic photos [s1] | 2/2 |
| ✓ | Service list published [s1] | 3/3 |
| ✓ | Clear contact details [s1] | 2/2 |
| ✓ | English website version [s1] | 2/2 |
| ✓ | Address and map published [s1] | 2/2 |
Price Transparency
Whether patients can estimate costs before visiting. Published price ranges count; exact prices are not required.
| ✓ | Prices or price ranges published The prices page lists fixed prices per treatment: aligner cases from 1,490 EUR (children) and 1,920 EUR (light) up to 4,599 EUR (complex), and retainers at 300 or 450 EUR. [impress-porto-deepen-14] | 3/3 |
| ✗ | Cleaning price listed [s1] | 0/2 |
| ✗ | Filling price listed [s1] | 0/2 |
| ✗ | Crown price listed [s1] | 0/2 |
| ✗ | Implant price listed [s1] | 0/2 |
| ✗ | Consultation price listed [s1] | 0/2 |
| ✗ | X-ray / imaging price listed [s1] | 0/2 |
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) [s1] | 6/6 |
| ✓ | Google review volume as of 2026-09-24 [impress-porto-deepen-9] | 3/3 |
| ✓ | Review recency Newest dated review 2026-09-23 [impress-porto-deepen-10] | 3/3 |
| ✓ | Clinic responds to reviews Owner replies to reviews, including negative ones, with dated responses [impress-porto-deepen-11] | 2/2 |
| ✗ | No recurring complaints Four independent low reviews describe long delays getting appointments or follow-up care [impress-porto-deepen] | 0/2 |
| ✓ | No suspicious review patterns Not a 100% 5-star histogram on a very large base; steady flow of dated reviews; mixed reviewer histories [impress-porto-deepen-12] | 2/2 |
| ✓ | Active Facebook presence Clinic's page links to its Facebook page [s1] | 1/1 |
| ✗ | TripAdvisor presence No TripAdvisor listing found; no link from the site or Google listing [impress-porto-deepen-2] [s1] | 0/0.5 |
| ? | Other review platforms Not established: the Trustpilot page shown on the clinic's site belongs to the Impress network as a whole; no profile on Doctoralia, WhatClinic or Dental Departures (checked 2026-10-05). | 0/0.5 |
Medical Infrastructure
The range of publicly documented equipment and services. This measures documented availability, not clinical quality.
| ? | On-site X-ray | 0/2 |
| ? | CBCT (3D imaging) | 0/2 |
| ✗ | Implantology [s1] | 0/2 |
| ✓ | Orthodontics [s1] | 2/2 |
| ✗ | Oral surgery Full treatment list read; no oral surgery item [impress-porto-deepen-3] | 0/2 |
| ✓ | Pediatric dentistry Child orthodontics offered as a treatment line [s1] | 1.5/1.5 |
| ✗ | Emergency care No emergency/same-day wording on any read page [s1] | 0/1.5 |
| ✓ | 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] | 0/2 |
| ? | Response speed | 0/1.5 |
| ✓ | English spoken [s1] | 2.5/2.5 |
| ✓ | Pre-visit consultation possible [s1] | 1.5/1.5 |
| ✓ | Clear service explanations [s1] | 1/1 |
| ✓ | Convenient opening hours Google Business Profile hours: weekdays to 20:00 and Saturday 9:00-18:00 [impress-porto-deepen-13] | 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. [impress-porto-deepen-4] | 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. [impress-porto-deepen-5] | 0/1 |
| ✗ | Mentioned for: dental implants Porto Not present in the top web results for "dental implants Porto, Portugal" on 2026-09-24. [impress-porto-deepen-6] | 0/1 |
| ✗ | Mentioned for: emergency dentist Porto Not present in the top web results for "emergency dentist Porto, Portugal" on 2026-09-24. [impress-porto-deepen-7] | 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. [impress-porto-deepen-8] | 0/1 |
| ✓ | Structured data on website JSON-LD on the homepage declares the type LocalBusiness. [impress-porto-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 157252; Licença N.º 20983 (ERS - Clínicas ou consultórios dentários, Licenciada) (ERS open registry, searched 'Impress' — exact address match (Rua Sá da Bandeira 676, Porto) The clinic's own site footer (smile2impress.com Porto page, read 2026-08-25) publishes the same licence number and the same certificate number in its own labelling — "Número de licença 20983/2021", "Certidão de Registo E157252" — plus a third number it calls "Número de Registo 34320", which the ERS record does not use for this establishment. (Value, note and the ERS source copied from the twin card portugal-dental on 2026-09-10.)) [s1] [impress-porto-lic]
Dentists & professional licences
No published dentist roster is recorded for this clinic yet — unverified, no penalty.
Red Flags
- low No dentists identified anywhere (-2 pts) — No dentist names published (derived from data).
Red-flag penalty applied: -2 points (capped at -20).
Data We Could Not Verify
- Reputation & Reviews: Other review platforms
- Medical Infrastructure: On-site X-ray
- 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://smile2impress.com/pt/clinica-ortontica-invisivel/porto |
|---|---|
| Phone | +351 308 800 355 |
| Google Maps | Map listing |
| Address | R. de Sá da Bandeira 676, 4000-431 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://smile2impress.com/pt/clinica-ortontica-invisivel/porto | Page states "equipa médica com vasta experiência" but names no individual dentist; no team/staff bio page exists for the Porto clinic | Page links to https://www.facebook.com/Smile2impress-101202554763043 | Porto clinic page carries no TripAdvisor link; none on the Google listing either | Treatments list includes "Ortodontia infantil" alongside adult and teen aligners | Clinic and pricing pages describe only orthodontic aligner treatments and hours, no emergency-care wording | 2026-09-24 |
| impress-porto-refresh | https://www.google.com/maps/place/Impress+Porto/@41.1520273,-8.6059… | 2,572 Google reviews as of 2026-08-25 (was 1,024) | 2026-08-25 |
| impress-porto-lic | https://www2.ers.pt/dmz/pesquisa/DetalheEstabelecimento.aspx?id=442560 | ERS record for IMPRESS PORTO (entity Smile2Impress, Lda): Registo N.º 157252, Licença N.º 20983 (Clínicas ou consultórios dentários), Estado Licenciada; Responsável Técnico Maria Luísa Lima da Quinta Gomes — not a named doctor in our dataset | 2026-08-25 |
| impress-porto-deepen | https://www.google.com/maps?cid=8542357582232302932&hl=en | Lowest-sorted read, 1★ dated 2026-01-17: treatment delayed, can't get appointments; 1★ dated 2026-07-10: consultation postponed, poor follow-up; 1★ dated 2026-04-07: new aligners request turned into a months-long ordeal; 1★ dated 2026-01-25: "há meses que tento marcar uma consulta de revisão sem sucesso" | 2026-09-24 |
| impress-porto-deepen-2 | https://www.tripadvisor.com/TypeAheadJson?action=API&query=Impress+… | Name+city search returned no matching dental business, only unrelated Porto attractions/hotels | 2026-09-24 |
| impress-porto-deepen-3 | https://smile2impress.com/pt/precos-pt | Treatment list (adult/teen aligners, child orthodontics, retention, whitening) and what's included in the price have no surgical item | 2026-09-24 |
| impress-porto-deepen-4 | 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 |
| impress-porto-deepen-5 | 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 |
| impress-porto-deepen-6 | 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 |
| impress-porto-deepen-7 | 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 |
| impress-porto-deepen-8 | 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 |
| impress-porto-deepen-9 | https://www.google.com/maps?cid=8542357582232302932&hl=en | Google listing 2026-09-24: 4.9 from 2,728 reviews; histogram 5★ 2623 / 4★ 59 / 3★ 7 / 2★ 7 / 1★ 32; newest review 2026-09-23 | 2026-09-24 |
| impress-porto-deepen-10 | https://www.google.com/maps?cid=8542357582232302932&hl=en | Newest-sorted read: multiple reviews dated 2026-09-23 | 2026-09-24 |
| impress-porto-deepen-11 | https://www.google.com/maps?cid=8542357582232302932&hl=en | Owner reply dated 2026-01-19 to a 1-star review: "We're genuinely sorry to hear that things didn't meet your expectations..." | 2026-09-24 |
| impress-porto-deepen-12 | https://www.google.com/maps?cid=8542357582232302932&hl=en | Histogram 5★ 2623 / 4★ 59 / 3★ 7 / 2★ 7 / 1★ 32 of 2,728 (96% 5★); about 150 new reviews since 2026-08-25; reviewers read in both sorts have 1-37 prior reviews | 2026-09-24 |
| impress-porto-deepen-13 | https://www.google.com/maps?cid=8542357582232302932&hl=en | Google Business Profile hours 2026-09-24: Monday-Friday 9 AM-2 PM, 3-8 PM; Saturday 9 AM-1 PM, 2-6 PM; Sunday closed | 2026-09-24 |
| impress-porto-deepen-14 | https://smile2impress.com/pt/precos-pt | Prices page: aligner treatment 1,490 EUR (children), 1,920 EUR (light case), 3,199-4,599 EUR (moderate to complex cases); retainers 300 EUR (light) and 450 EUR (full). | 2026-09-29 |
| impress-porto-r6s3 | https://smile2impress.com/pt/clinica-ortontica-invisivel/porto | Homepage HTML read on 2026-10-02: JSON-LD types LocalBusiness | 2026-10-02 |
Change History
| Date | Change |
|---|---|
| 2026-10-05 | Other review platforms re-checked on 2026-10-05: the DocDental page cited before only reproduces Google reviews; the Trustpilot page linked from the clinic's site belongs to the Impress network as a whole, so presence of the Porto clinic itself is not established; changed from yes to unverified. |
| 2026-10-02 | Read the clinic's own website (homepage, robots.txt, sitemap and service pages) for site structure: business structured data present. |
| 2026-09-29 | Re-read the clinic's own website and public listings on 2026-09-29. Recorded: pricesPublished. |
| 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 (Porto clinic and pricing pages) and its Google listing. Recorded: child orthodontics offered, no oral surgery and no emergency wording, weekday-evening and Saturday hours, a Facebook link, no dentist individually named, and no TripAdvisor listing. Four independent reviews about long delays getting appointments or aligner follow-up are recorded as a recurring complaint. Google listing now shows 2,728 reviews (4.9), newest 2026-09-23, with owner replies to negative reviews. Still unverified: on-site X-ray/CBCT equipment (the clinic's own pages do not describe any imaging equipment) and whether prices are published beyond the entry-level aligner plan (1,920 €). |
| 2026-09-10 | Twin parity 2026-09-10 (clinicLicense): both cards had the same licence (20983) and the same establishment number (157252), but this card carried the clinic's own footer labelling, in which 157252 is a "certidão" and a third number, 34320, is called the "número de registo". The twin read the ERS establishment record itself (detail page, address-matched to Rua Sá da Bandeira 676): Registo N.º 157252, Licença N.º 20983, Estado Licenciada. The cell now carries the register's reading on both cards, with the footer numbering kept in the note. |
| 2026-08-25 | License verification 2026-08-25: clinic license found self-published on the clinic's Porto page (Licenca 20983/2021, Registo 34320, Certidao E157252). No named doctors on file for this clinic. |
| 2026-08-25 | Re-verification 2026-08-25: confirmed website and rating (4.9) unchanged; added postal code to address (4000-431, previously not recorded); captured first phone number +351 308 800 355 (previously unset); Google review count increased sharply to 2,572 (was 1,024); 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.