GrandDent Dental Clinic
According to our open methodology, this clinic scored 62.4/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #3 of 14 ranked clinics · Last checked: 25 August 2026
Positions by Rating Profile
- Overall Transparency & Trust#362.4/100
- Best for Expats#460.8/100
- Best for Dental Implants#458.8/100
- Best for Emergency Dental Care#263.2/100
- Best Price Transparency#350.6/100
- Best English-speaking Clinics#363.8/100
- Best for Families / Childrennot ranked
- Sleep Dentistry (GA / deep sedation)#162.4/100
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 Own oral-surgery page: 'General Anesthesia: You will be completely unconscious and unaware of the procedure.' [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 and real photos but does not publish a full price list. Aggregators report high ratings and a Dental Departures Patients' Choice award.
Strengths
- Information Transparency: 20 of 20 points.
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 [s1] | 0/3 |
| ? | Cleaning price listed | 0/2 |
| ? | Filling price listed | 0/2 |
| ? | Crown price listed | 0/2 |
| ✓ | Implant price listed From THB 45,000 (aggregator) [s2] | 2/2 |
| ✓ | Consultation price listed Free consultation [s2] | 2/2 |
| ? | X-ray / imaging price listed | 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) as of 2026-08-25 [granddent-dental-clinic-refresh] | 6/6 |
| ✓ | Google review volume [granddent-dental-clinic-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 [s1] | 1/1 |
| ? | TripAdvisor presence | 0/0.5 |
| ✓ | Other review platforms WhatClinic, Dental Departures, Wanderlog, Top-Rated.Online [s2] | 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) | 0/2 |
| ✓ | 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 non-Thai speakers.
| ? | WhatsApp / LINE available | 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 Chiang Mai", "English speaking dentist Chiang Mai", "dental implants Chiang Mai", "emergency dentist Chiang Mai", "Chiang Mai dental clinic for expats".
| ✓ | Mentioned for: best dentist Chiang Mai [sq] | 1/1 |
| ✗ | Mentioned for: English speaking dentist Chiang Mai [sq] | 0/1 |
| ✗ | Mentioned for: dental implants Chiang Mai [sq] | 0/1 |
| ✓ | Mentioned for: emergency dentist Chiang Mai [sq] | 1/1 |
| ✗ | Mentioned for: Chiang Mai dental clinic for expats [sq] | 0/1 |
| ? | Structured data on website | 0/1.5 |
| ✓ | 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
- low Opaque or bait pricing (-2 pts) — No prices or price ranges published (derived from data).
Red-flag penalty applied: -2 points (capped at -20).
Data We Could Not Verify
- Price Transparency: Cleaning price listed
- Price Transparency: Filling price listed
- Price Transparency: Crown price listed
- Price Transparency: X-ray / imaging price listed
- Reputation & Reviews: Review recency
- Reputation & Reviews: Clinic responds to reviews
- Reputation & Reviews: No recurring complaints
- Reputation & Reviews: No suspicious review patterns
- Reputation & Reviews: TripAdvisor presence
- Medical Infrastructure: CBCT (3D imaging)
- Medical Infrastructure: Pediatric dentistry
- Communication & Service: WhatsApp / LINE available
- Communication & Service: Response speed
- AI & Search Visibility: Structured data on website
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 / English speaking / implants / emergency / expats Chiang Mai | AI/search visibility scout 2026-07-08 | 2026-07-08 |
| granddent-dental-clinic-refresh | https://www.google.com/maps/place/GrandDent+Dental+Chiang+Mai/@18.7… | Google rating 4.9 (788 reviews) as of 2026-08-25 | 2026-08-25 |
| granddent-dental-clinic-sedation | https://www.granddentdental.com/our-services/oral-surgery/ | Lists three anaesthesia options including 'General Anesthesia: You will be completely unconscious and unaware of the procedure.' | 2026-08-25 |
| granddent-dental-clinic-lic | https://hosp.hss.moph.go.th/ | searched: เชียงใหม่ (name field) — 'ไม่พบข้อมูล' (no results) nationwide for that exact substring. | 2026-08-25 |
| granddent-dental-clinic-doclic | https://dentalcouncil.or.th/FindDentist | Thai name from clinic's own site (granddentdental.com/th/): ทองนารถ คำชัย. searched: ทองนารถ คำชัย — registry returned 'ไม่พบข้อมูลทันตแพทย์ที่ท่านค้นหา'; a miss is not proof of no licence per registry notes. | 2026-08-25 |
Change History
| Date | Change |
|---|---|
| 2026-08-25 | License verification 2026-08-25 against Dental Council of Thailand and Dept. of Health Service Support registry: neither named dentist (Thongnard Kumchai / ทองนารถ คำชัย, Hattapol Kumchai / หัฏฐพณ คำชัย) was found under their exact Thai names (a miss is not proof of no licence); clinic facility licence not found under its Thai trade name ('เชียงใหม่' returned zero results registry-wide). |
| 2026-08-25 | Recorded sedation / general anaesthesia availability (informational): documented as available. Own oral-surgery page: 'General Anesthesia: You will be completely unconscious and unaware of the procedure.' |
| 2026-08-25 | Re-verification 2026-08-25: confirmed website live (granddentdental.com), name, address, and phone unchanged; captured first Google rating 4.9 (788 reviews) and Maps coordinates; clinic's own oral-surgery page documents general anaesthesia (patient 'completely unconscious and unaware'). |
| 2026-07-08 | Initial data collection. |
A question or a correction?
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