GrandDent Dental Clinic
According to our open methodology, this clinic scored 86.1/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #7 of 26 ranked clinics · Last checked: 25 August 2026
Positions by Rating Profile
- Overall Transparency & Trust#786.1/100
- Best for Expats#782.3/100
- Best for Dental Implants#686/100
- Best for Emergency Dental Care#682.3/100
- Best Price Transparency#791.1/100
- Best English-speaking Clinics#981/100
- Best for Families / Childrennot ranked
- Sleep Dentistry (GA / deep sedation)#286.1/100
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) — General anaesthesia / deep sedation documented Oral surgery page lists GA: 'You will be completely unconscious and unaware of the procedure.' Separate from conscious sedation. [granddent-dental-clinic-sedation]
Summary
GrandDent is a multi-specialty dental clinic near Chiang Mai International Airport, listing two prosthodontics-focused dentists and a full service range including implants and full-mouth reconstruction. The website has an English version, real photos and a full price list covering cleaning, fillings, crowns, implants and X-rays. Aggregators report high ratings and a Dental Departures Patients' Choice award.
Strengths
- Information Transparency: 20 of 20 points.
- Price Transparency: 15 of 15 points.
- Medical Infrastructure: 13.5 of 15 points.
- No red flags identified in public sources.
Weaknesses
No category fell below the weakness threshold (50% of verifiable points).
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 [s1] | 3/3 |
| ✓ | 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 Address listed; map link not found [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 Full price list on the clinic's own site: diagnosis, periodontics, endodontics, restorative, orthodontics, oral surgery, implants [granddent-dental-clinic-deepen] | 3/3 |
| ✓ | Cleaning price listed Cleaning 1,000-1,500 Baht on the clinic's price list [granddent-dental-clinic-deepen-7] | 2/2 |
| ✓ | Filling price listed Filling prices by surface count, from 1,000 Baht [granddent-dental-clinic-deepen-8] | 2/2 |
| ✓ | Crown price listed All-ceramic crown from 16,000 Baht on the clinic's price list [granddent-dental-clinic-deepen-9] | 2/2 |
| ✓ | Implant price listed Implant 50,000-70,000 Baht on the clinic's own price list. [granddent-dental-clinic-deepen-14] [s2] | 2/2 |
| ✓ | Consultation price listed The clinic's site offers a free first-visit consultation; its price list charges 500 Baht for a dental examination. [granddent-dental-clinic-deepen-15] [granddent-dental-clinic-deepen-14] [s2] | 2/2 |
| ✓ | X-ray / imaging price listed Bitewing and panoramic X-ray prices on the clinic's price list [granddent-dental-clinic-deepen-10] | 2/2 |
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) as of 2026-08-25 [granddent-dental-clinic-refresh] | 6/6 |
| ✓ | Google review volume [granddent-dental-clinic-refresh] | 3/3 |
| ✓ | Review recency Newest review 2026-08-20 [granddent-dental-clinic-deepen-11] | 3/3 |
| ✓ | Clinic responds to reviews Owner replied to a 1-star review [granddent-dental-clinic-deepen-12] | 2/2 |
| ✗ | No recurring complaints Low-rated reviews describe poor-quality work: crowns redone after an infection (2025-01-12), a filling that cracked within weeks (2025-03-11); 1-2★ 17 of 787 [granddent-dental-clinic-deepen-2] | 0/2 |
| ? | No suspicious review patterns | 0/2 |
| ✓ | Active Facebook presence [s1] | 1/1 |
| ✗ | TripAdvisor presence No TripAdvisor listing found; no link on the clinic's own site [granddent-dental-clinic-deepen-6] [granddent-dental-clinic-deepen-13] | 0/0.5 |
| ✓ | Other review platforms Reviewed on Dental Departures (702 reviews, 4.9) and WhatClinic (2 verified reviews, 5.0). [granddent-dental-clinic-platforms] [granddent-dental-clinic-platforms-2] | 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 Advanced imaging / digital smile design [s1] | 2/2 |
| ✓ | CBCT (3D imaging) CBCT (3D X-ray) priced at 3,000 Baht on the clinic's price list [granddent-dental-clinic-deepen-3] | 2/2 |
| ✓ | Implantology [s1] | 2/2 |
| ✓ | Orthodontics [s1] | 2/2 |
| ✓ | Oral surgery [s1] | 2/2 |
| ? | Pediatric dentistry | 0/1.5 |
| ✓ | Emergency care Marketed as emergency dentist [s2] | 1.5/1.5 |
| ✓ | Works with international patients [s2] | 2/2 |
Communication & Service
How easy it is to contact the clinic, get answers, and book - especially for international patients.
| ✗ | WhatsApp / LINE available Only Facebook and Instagram links found; no WhatsApp or LINE [granddent-dental-clinic-deepen-4] | 0/2 |
| ? | Response speed | 0/1.5 |
| ✓ | English spoken [s1] [s2] | 2.5/2.5 |
| ✓ | Pre-visit consultation possible Free consultation [s2] | 1.5/1.5 |
| ✓ | Clear service explanations [s1] | 1/1 |
| ✓ | Convenient opening hours Mon-Fri 9-20, Sat-Sun 9-17 [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 Thailand", "English speaking dentist Thailand", "dental implants Thailand", "emergency dentist Thailand", "Thailand dental clinic for expats".
| ✓ | Mentioned for: best dentist Thailand [sq] | 1/1 |
| ✗ | Mentioned for: English speaking dentist Thailand [sq] | 0/1 |
| ✗ | Mentioned for: dental implants Thailand [sq] | 0/1 |
| ✓ | Mentioned for: emergency dentist Thailand [sq] | 1/1 |
| ✗ | Mentioned for: Thailand dental clinic for expats [sq] | 0/1 |
| ✓ | Structured data on website Organization JSON-LD on the homepage [granddent-dental-clinic-deepen-5] | 1.5/1.5 |
| ✓ | Google indexing quality [sq] | 2/2 |
| ✓ | 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: not checked against public sources yet — unverified, no penalty
Dentists & professional licences
| Dentist | Specialization | Licence No. |
|---|---|---|
| Assoc. Prof. Dr. Thongnard Kumchai [s1] [granddent-dental-clinic-doclic] | General/Prosthodontics | not verified |
| Dr. Hattapol Kumchai [s1] [granddent-dental-clinic-doclic] | Prosthodontics (Diplomate, American Board of Prosthodontics) | not verified |
Dentists are named; their licence numbers have not been checked against public sources yet — unverified, no penalty.
Red Flags
No red flags identified in the public sources we reviewed.
Data We Could Not Verify
- Reputation & Reviews: No suspicious review patterns
- Medical Infrastructure: Pediatric dentistry
- Communication & Service: Response speed
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://granddentdental.com |
|---|---|
| Phone | +66 53-274420 |
| https://www.facebook.com/granddentdental | |
| Google Maps | Map listing |
| Address | 181 Mahidol Rd, T. Haiya, A. Muang, Chiang Mai 50000 |
Contact details are provided for identification only and may change; verify with the clinic directly.
Sources
| ID | Source | What it supports | Accessed |
|---|---|---|---|
| s1 | https://granddentdental.com | Website: contacts, dentists, services, photos, hours | 2026-07-08 |
| s2 | https://chiangmaidental.com/clinics/granddent/ | Aggregated reviews, prices, emergency/foreigner info | 2026-07-08 |
| sq | search:best dentist Chiang Mai / English speaking dentist Chiang Mai / dental implants Chiang Mai / emergency dentist Chiang Mai / Chiang Mai dental clinic for expats | AI/search visibility scout 2026-07-08 | 2026-07-08 |
| granddent-dental-clinic-sedation | https://www.granddentdental.com/our-services/oral-surgery/ | 'General Anesthesia: You will be completely unconscious and unaware of the procedure' | 2026-08-23 |
| granddent-dental-clinic-refresh | https://www.google.com/maps/place/GrandDent+Dental+Chiang+Mai/data=… | Google rating 4.9 (788 reviews) as of 2026-08-25 | 2026-08-25 |
| granddent-dental-clinic-doclic | https://dentalcouncil.or.th/FindDentist | Name from clinic's own site (granddentdental.com/th/): Thongnard Kumchai. searched: Thongnard Kumchai - registry returned 'no dentist found matching your search'; a miss is not proof of no licence per registry notes. | 2026-08-26 |
| granddent-dental-clinic-deepen | https://www.granddentdental.com/price-list | Price list page lists fees for dental exam 500 Baht, X-rays, cleaning 1,000-1,500 Baht, fillings, crowns 16,000-18,000 Baht, implants 50,000-70,000 Baht and more, across 8 procedure categories | 2026-09-25 |
| granddent-dental-clinic-deepen-2 | https://www.google.com/maps?cid=15274231034704683901&hl=en | Google listing 2026-09-25, 787 reviews (5★ 760, 4★ 8, 3★ 2, 2★ 3, 1★ 14). 1-star 2025-01-12: crowns left a root exposed and infected, 'I have to have all of this removed and redone'; 1-star 2025-03-11: 'the filing cracked shortly after a few weeks... charged full price again'; 1-star 2025-09-25: 'kept wanting me to spend money on unnecessary' treatment | 2026-09-25 |
| granddent-dental-clinic-deepen-3 | https://www.granddentdental.com/th/price-list/ | Thai price list, diagnosis section: '3D X-ray (CBCT), 3,000 Baht' (3D CBCT X-ray, 3,000 Baht), listed after the panoramic X-ray at 600 Baht; the English price list shows the same CBCT item | 2026-09-25 |
| granddent-dental-clinic-deepen-4 | https://www.granddentdental.com/contact-us | Contact page links only to facebook.com/granddentdental and instagram.com/granddentdental_official; no wa.me, whatsapp or line.me link in raw HTML of home, contact, about, services or price pages | 2026-09-25 |
| granddent-dental-clinic-deepen-5 | https://www.granddentdental.com/ | Homepage JSON-LD script contains an ItemList and an Organization entity | 2026-09-25 |
| granddent-dental-clinic-deepen-6 | https://www.tripadvisor.com/TypeAheadJson?action=API&query=GrandDen… | TripAdvisor's own search for "GrandDent Dental Clinic" returns 12 results, none in Chiang Mai or matching this clinic | 2026-09-25 |
| granddent-dental-clinic-deepen-7 | https://www.granddentdental.com/price-list | Price list, Periodontics section: "Cleaning 1,000 – 1,500 Baht" | 2026-09-25 |
| granddent-dental-clinic-deepen-8 | https://www.granddentdental.com/price-list | Price list: "Filling 1 surface 1,000 – 1,200 Baht (per tooth)" through "Filling 4 surface 1,500 – 2,500 Baht (per tooth)" | 2026-09-25 |
| granddent-dental-clinic-deepen-9 | https://www.granddentdental.com/price-list | Price list: "All ceramic crown 16,000 – 18,000 Baht (per tooth)" | 2026-09-25 |
| granddent-dental-clinic-deepen-10 | https://www.granddentdental.com/price-list | Price list, Diagnosis section: "PA or Bitewing X-ray 150 Baht", "Panoramic X-ray 600 Baht" | 2026-09-25 |
| granddent-dental-clinic-deepen-11 | https://www.google.com/maps?cid=15274231034704683901&hl=en | Newest-sorted listing 2026-09-25: most recent review dated 2026-08-20 | 2026-09-25 |
| granddent-dental-clinic-deepen-12 | https://www.google.com/maps?cid=15274231034704683901&hl=en | Owner reply dated 2025-01-26 to a 1-star review: "Dear Josee B, We sincerely apologize for your experience and regret any distress it may have caused..." | 2026-09-25 |
| granddent-dental-clinic-deepen-13 | https://www.granddentdental.com/contact-us | No tripadvisor.com link on the clinic's contact, home, about or services pages | 2026-09-25 |
| granddent-dental-clinic-deepen-14 | https://www.granddentdental.com/price-list/ | Price list page (read 2026-09-30), fees in Baht: dental examination 500; implant 50,000-70,000; sinus lift 20,000; bone augmentation 10,000; plus diagnosis, periodontics, endodontics, restorative, orthodontics and oral surgery sections | 2026-09-30 |
| granddent-dental-clinic-deepen-15 | https://www.granddentdental.com/your-treatment/ | Treatment process page (read 2026-09-30), "Transparent Pricing": "We offer a free consultation for your first visit"; the costs of images, scans and X-rays are outlined at the start of the appointment | 2026-09-30 |
| granddent-dental-clinic-platforms | https://www.dentaldepartures.com/dentist/granddent-dental-clinic | Dental Departures: clinic profile "GrandDent Dental Clinic", 181 Mahidol Rd., T. Haiya, Chiang Mai 50000 (the clinic's address): rating 4.9 from 702 reviews (checked 2026-10-02) | 2026-10-02 |
| granddent-dental-clinic-platforms-2 | https://www.whatclinic.com/dentists/thailand/chiang-mai-province/ch… | WhatClinic clinic profile "GrandDent Dental Clinic", 181 Mahidol Rd., T. Haiya, A. Muang, Chiang Mai 50000 (the clinic's address), naming Dr Thongnard Kumchai:2 verified patient reviews, 5.0 (newest 11.03.2023); ServiceScore "Very Good" from 11 interactions (checked 2026-10-02) | 2026-10-02 |
Change History
| Date | Change |
|---|---|
| 2026-09-25 | Re-read on 2026-09-25: the clinic's price list, service pages and Google listing (newest and lowest reviews). Recorded: a full price list on the clinic's own site covering cleaning, fillings, crowns, X-rays and CBCT imaging; no WhatsApp or LINE; Organization structured data on the homepage; no TripAdvisor presence; low-rated reviews repeatedly describe poor-quality work. Corrected: the clinic's price list is published on its own site. |
| 2026-08-26 | License verification 2026-08-26: reused finding from the identical clinic record already researched on 2026-08-25 (Thailand's chiangmai-dental site) — neither named dentist (Thongnard Kumchai, Hattapol Kumchai) was found under the exact Thai-script spelling of their names (a miss is not proof of no licence); clinic facility licence not found under its Thai trade name (the Thai-script 'Chiang Mai' returned zero results registry-wide). |
| 2026-08-25 | Re-verification 2026-08-25: confirmed website live (granddentdental.com), address and phone unchanged; captured first Google reputation reading, 4.9 rating with 788 reviews (previously unset). |
| 2026-08-23 | Recorded sedation / general anaesthesia availability (informational): documented as available. Oral surgery page lists GA: 'You will be completely unconscious and unaware of the procedure.' Separate from conscious sedation. |
| 2026-08-14 | Imported from the city-tier dataset (data originally collected 2026-07-08). |
A question or a correction?
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