Impress Porto
According to our open methodology, this clinic scored 41.1/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #6 of 15 ranked clinics · Last checked: 25 August 2026
Positions by Rating Profile
- Overall Transparency & Trust#641.1/100
- Best for Expats#440.3/100
- Best for Dental Implantsnot ranked
- Best for Emergency Dental Carenot ranked
- Best Price Transparency#331.2/100
- Best English-speaking Clinics#245.7/100
- Best for Families / Childrennot ranked
- 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. High directory rating (4.9 from ~1,024 reviews). Focused on orthodontics rather than a full-service general dental clinic.
Strengths
- Information Transparency: 17 of 20 points.
- No red flags identified in public sources.
Weaknesses
- Price Transparency: 0 of 12 verifiable points (missing: cleaning price listed; filling price listed; crown price listed; implant price listed; consultation price listed; x-ray / imaging price listed)
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 | 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 | 0/3 |
| ✗ | 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 [impress-porto-refresh] | 3/3 |
| ? | Review recency | 0/3 |
| ? | Clinic responds to reviews | 0/2 |
| ? | No recurring complaints | 0/2 |
| ? | No suspicious review patterns | 0/2 |
| ? | Active Facebook presence | 0/1 |
| ? | TripAdvisor presence | 0/0.5 |
| ✓ | Other review platforms [s1] | 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 | 0/2 |
| ? | CBCT (3D imaging) | 0/2 |
| ✗ | Implantology [s1] | 0/2 |
| ✓ | Orthodontics [s1] | 2/2 |
| ? | Oral surgery | 0/2 |
| ? | Pediatric dentistry | 0/1.5 |
| ? | Emergency care | 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 | 0/1.5 |
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 | 0/1 |
| ? | Mentioned for: English speaking dentist Porto | 0/1 |
| ? | Mentioned for: dental implants Porto | 0/1 |
| ? | Mentioned for: emergency dentist Porto | 0/1 |
| ? | Mentioned for: Porto dental clinic for expats | 0/1 |
| ? | Structured data on website | 0/1.5 |
| ? | 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: Licenca 20983/2021 | Registo 34320 | Certidao E157252 (Registry: ERS. Self-published on the clinic's own site (smile2impress.com Porto page footer): 'Numero de Registo 34320', 'Certidao de Registo E157252', 'Numero de licenca 20983/2021'. Legal entity shown only as the international parent 'SMILE2IMPRESS SL'. No named doctors to check. Checked 2026-08-25.) [s1]
Dentists & professional licences
No published dentist roster is recorded for this clinic yet — unverified, no penalty.
Red Flags
No red flags identified in the public sources we reviewed.
Data We Could Not Verify
- Information Transparency: Dentist names listed
- Price Transparency: Prices or price ranges published
- Reputation & Reviews: Review recency
- Reputation & Reviews: Clinic responds to reviews
- Reputation & Reviews: No recurring complaints
- Reputation & Reviews: No suspicious review patterns
- Reputation & Reviews: Active Facebook presence
- Reputation & Reviews: TripAdvisor presence
- Medical Infrastructure: On-site X-ray
- Medical Infrastructure: CBCT (3D imaging)
- Medical Infrastructure: Oral surgery
- Medical Infrastructure: Pediatric dentistry
- Medical Infrastructure: Emergency care
- Communication & Service: Response speed
- Communication & Service: Convenient opening hours
- AI & Search Visibility: Mentioned for: best dentist Porto
- AI & Search Visibility: Mentioned for: English speaking dentist Porto
- AI & Search Visibility: Mentioned for: dental implants Porto
- AI & Search Visibility: Mentioned for: emergency dentist Porto
- AI & Search Visibility: Mentioned for: Porto dental clinic for expats
- AI & Search Visibility: Structured data on website
- 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 | Footer shows 'Numero de Registo 34320', 'Certidao de Registo E157252', 'Numero de licenca 20983/2021'. | 2026-08-25 |
| s2 | https://docdental.pt/clinica-dental/impress-porto/ | 4.9 rating from ~1,024 reviews | 2026-07-14 |
| 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 |
Change History
| Date | Change |
|---|---|
| 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.