HeySmile Dental Clinic is located at 155/8 Sukhumvit 21 Road, Khlong Toei Nuea, Watthana, Bangkok 10110, Thailand. The clinic is a five-minute walk from BTS Asok station on the Sukhumvit line and is also reachable from MRT Sukhumvit on the underground Blue Line. Both transit connections provide direct access from Bangkok's main hotel corridor and the Phaya Thai Airport Rail Link interchange. Sukhumvit 21 sits within the Asok neighborhood, one of Bangkok's busiest expat and business hubs with a high concentration of serviced apartments and international hotels.
Clinical Team
The clinic is directed by Dr. Naphang-Nipat Thanyakarn, a Chulalongkorn University graduate specializing in dental implants. The orthodontic team is led by Dr. Chompoonuj Thanyakarn, who holds a DDS with honors from Mahidol University and a Master of Dental Science from Lund University in Sweden, and who is distinguished as the first Thai orthodontist to be featured on the Global Invisalign Gallery, a recognition reflecting both case volume and clinical outcome quality in clear aligner treatment. Dr. Dusit Roongruangyot brings decades of general dentistry experience with certifications in anterior esthetics, inlay and onlay restorations, and implant dentistry, also from Mahidol University. Orthodontic specialist Dr. Chalermporn Budsabong completed residency training at Chulalongkorn University's Faculty of Dentistry and holds membership in both the Thai Dental Association and Thai Orthodontic Association. Aesthetic and prosthodontic work is covered by Dr. Pranmas Teeranuwat, who holds a master's degree in prosthodontics from Chulalongkorn University, and Dr. Rapeepan Monaraks, who completed advanced prosthodontics training at UCLA in the United States.
Invisalign and Orthodontics
Invisalign clear aligner therapy is a primary clinical strength, supported by Dr. Chompoonuj's Invisalign Gallery recognition and iTero 3D intraoral scanning technology for digital case planning and monitoring. The clinic claims treatment completion timelines in the range of three to six months for suitable cases, shorter than typical Invisalign treatment windows, reflecting the team's experience managing aligner case velocity. Conventional metal and ceramic braces are available for patients whose treatment complexity or preference calls for fixed appliances.
Services
The full service range covers cosmetic, restorative, surgical, and preventive dentistry. Cosmetic services include porcelain veneers, professional teeth whitening using both laser and bleaching protocols, and composite dental bonding. Implant dentistry covers single-tooth implants and implant-supported restorations. Restorative services include ceramic crowns, fixed bridges, composite fillings, and root canal therapy. Oral surgery covers wisdom tooth extraction and surgical tooth removal. Preventive care uses AirFlow technology, a powered air-polishing system that removes biofilm and staining more gently than conventional metal scaler-based cleaning. Digital X-rays and intraoral cameras support examination and treatment documentation. Laser dentistry is available for soft tissue and selected restorative procedures. Free initial consultations and oral assessments are offered to new patients.
International Patient Services
The clinic actively serves international patients and maintains English-language communication across consultations, treatment planning, and procedure explanations. Patient testimonials from visitors from the United States, Sweden, and other countries note the quality of care relative to home-country standards and the cost savings available through Thai dental pricing, typically in the range of 40 to 60 percent compared to Scandinavian and North American fee levels. The BTS Asok location makes the clinic straightforward to reach from any point in Bangkok's Sukhumvit corridor and accessible from Suvarnabhumi Airport via the airport rail link and a BTS transfer at Phaya Thai or On Nut.
