About Us
About HeySmile Dental Clinic
A dental clinic on Sukhumvit 21 (Asok) where every appointment is handled in English
HeySmile is an independent dental clinic five minutes on foot from BTS Asok and MRT Sukhumvit. Our dentists trained at Mahidol, Chulalongkorn and Lund University, we publish one price list in Thai baht for Thai and international patients, and the dentist confirms the amount with you after the examination and before any treatment starts.
What we treat
- Cleaning & scaling
- Teeth whitening
- Philips Zoom whitening
- Veneers
- Invisalign
- Braces
- Dental implants
- Root canal treatment
- Crowns
- Wisdom tooth removal
- Dentures
How your first visit works
- BookOnline in about a minute, or message us on WhatsApp. We confirm the slot with you.
- ExaminationThe dentist checks your teeth and gums, with an X-ray only where it is needed.
- Plan and priceYou see the options and the amount in Thai baht, in writing on request, before anything starts.
- TreatmentSame visit where possible. Lab work such as crowns and veneers is planned around your travel dates.
If you are visiting Bangkok for a short trip, our 2026 guide to choosing a dentist in Bangkok sets out how many days each treatment needs and what to ask any clinic before you book.
The dentists you will meet
Dr. Chompoonuj Thanyakarn
Senior dentist and supervisor
- D.D.S. (Hons.), Mahidol University, 1988
- M.D.Sc., Lund University, Sweden, 1991
- Orthodontics training, Lund University, 1988 – 1991
- First orthodontist from Thailand showcased on the Global Invisalign Gallery
Dr. Dusit Roongruangyot
Senior dentist and supervisor
- D.D.S., Mahidol University, 1988
- All-ceramic and veneer restoration programmes, 2007
- Professional implant training, AIC, 2009
- Osstem AIC advanced course, upper anterior aesthetics, 2014
Dr. Naphang-Nipat Thanyakarn
Clinic director
- D.D.S. (Hons.), Chulalongkorn University
- Master course, dental implant training programme (Osstem)
- Member, Dental Association of Thailand
Every dentist at the clinic is registered with the Thai Dental Council, and we will give you the registration and the clinic licence number on request. See the full team and their qualifications.
Patient stories
The scaling and whitening treatment came to a total of 7190 THB. Half of what it would cost in my home country (Sweden).
Ms. Sarah J. Natalia, Sweden · treated during a holiday in Bangkok
I usually go to the dentist in the United States, and this was my first time seeing a dentist abroad. I'm glad I came because I knew I could get the same level of care I'm used to at home.
Mr. Paul Chiappetta, USA
Very good location and easy to book an appointment. Clean and modern facilities. Dentist was very professional and helpful regarding extra care.
Ms. Annie Arif
Read more patient reviews, including patients from the UK, Italy and Thailand.
Prices you can check before you come
These are our list prices in September 2026. They are the same for Thai and international patients, and the dentist confirms the exact amount after the examination.
| Treatment | Price (THB) | Visits |
|---|---|---|
| Check-up and teeth cleaning | 900 – 1,500 | 1 |
| Teeth whitening in the clinic | 3,590 – 7,900 | 1 |
| Composite filling | 900 – 1,500 | 1 |
| Root canal treatment | 7,000 – 9,000 | 1 – 2 |
| Ceramic veneer, per tooth | 14,000 – 16,000 | 2 |
| Dental implant, from | 49,990 | 2 trips |
See the full price list in Thai baht.
Getting here
- Address
- 155/8 Sukhumvit 21 Road (Asok), Klongtoey Nuea, Watthana, Bangkok 10110
- Opening hours
- Every day, 09:30 – 19:30
- By train
- BTS Asok exit 3 or MRT Sukhumvit exit 1, about 5 minutes on foot past Terminal 21
- Contact
- Phone +66 92 749 2829 · WhatsApp +66 92 749 2829 · heysmiledental@gmail.com
Coming from a hotel on Sukhumvit? Nana, Phrom Phong, Thong Lo and Ratchada are all 5 – 15 minutes away by BTS or MRT. Ask us for the quickest route from where you are staying.
Questions patients ask before booking
Do I need to speak Thai?
No. Every dentist and the front desk speak English, and the examination, the options and the price are explained in English. A written treatment plan in English is available on request.
Are the prices different for foreigners?
No. One price list in Thai baht applies to Thai and international patients. The dentist confirms the amount with you after the examination and before treatment starts.
Can I get an appointment during a short trip?
Usually yes. Cleaning, whitening, fillings and check-ups are normally available within the same week. Veneers, crowns and implants need lab time, so book one to two weeks ahead and keep a spare day for the follow-up visit.
Can I claim the cost on my insurance?
Most international plans reimburse dental treatment. Ask us for an itemised English receipt with the clinic licence number, the dentist's name, tooth numbers and the procedures, plus a short treatment report.
How do I check that the clinic and the dentist are registered?
Ask for the clinic's Ministry of Public Health licence number and the dentist's Thai Dental Council registration. The certificate is displayed at reception and we will give you the numbers on request.
What payment methods do you take?
Cash in Thai baht and the major cards. Payment is made at the clinic after you have seen and agreed the plan, so no deposit by chat is needed.
Book an appointment at HeySmile
Online booking takes about a minute. Step 1: choose the treatment and your preferred time. Step 2: your name and WhatsApp number. We'll confirm your time on WhatsApp within 1 hour.
Branch
Heysmile Dental Clinic
Located in Sukhumvit 21 (Asok), the heart of Bangkok’s lively business district, HeySmile is more than just a dental clinic—it’s a place where world-class care meets a warm, family-friendly approach. We welcome patients from all over the world with open arms and expert hands.