TDH Dental Ploenchit is the Canvas Ploenchit branch of Thonglor Dental Hospital (TDH), located at Unit 602 on the sixth floor of Canvas Building, 546 Ploenchit Road, Lumphini Subdistrict, Pathumwan District, Bangkok 10330, Thailand. The Canvas building sits on Ploenchit Road between BTS Phloen Chit and BTS Chit Lom stations, directly opposite Central Embassy shopping centre, at the heart of Bangkok's central business district. The branch opened in April 2024 when Canvas Ploenchit, a premium six-storey mixed-use development by Capstone Asset, completed its initial tenant fit-out. The building provides ample parking and EV charging facilities. The clinic can be reached by phone at +66 98 893 9898 or the main line 02-253-9598.
TDH Network
Thonglor Dental Hospital operates nine branches across Thailand and one international location. Bangkok branches include the flagship Thonglor location at Sukhumvit 55, the Punnawithi branch on Sukhumvit Road, ICON Siam on the Thonburi side of the Chao Phraya, Raminthra, and the Ploenchit branch. Further branches are in Ratchaphruek (Nonthaburi Province) and at Prince Suvarnabhumi Hospital near Suvarnabhumi Airport. TDH also operates in Vientiane, Laos as its international outpost. Each branch operates under the shared clinical protocols, quality standards, and specialist team that underpin the group's reputation.
Invisalign Red Diamond Status
TDH holds Invisalign Red Diamond Provider status as of 2024, the highest tier in Align Technology's global recognition program. The clinic is the only Red Diamond provider in Thailand. Red Diamond designation requires a minimum of 1,000 successfully completed Invisalign cases per year; TDH's orthodontic team has treated more than 6,000 patients with Invisalign across the network. Before attaining Red Diamond, TDH held Black Diamond Provider status for seven consecutive years, itself requiring 400 to 750 cases annually. iTero digital scanning is used at the clinic for intraoral impressions, treatment simulation, and progress tracking throughout active aligner therapy.
Orthodontic Systems
Beyond Invisalign, TDH offers Brava by BRIUS, a lingual aligner hybrid system that positions brackets on the inner tooth surfaces and delivers forces through a clear outer shell, allowing treatment without visible external hardware. The clinic has completed more than 400 Brava cases across the network, with certified Brava practitioners on staff. Conventional metal braces and Damon self-ligating braces are also available for patients whose cases or preferences favour fixed appliances. Pediatric orthodontic cases are handled under the Invisalign First program, which is designed for younger patients who are still developing dentally.
Cosmetic and Restorative Dentistry
Ceramic veneer design and fabrication are offered for patients seeking to modify tooth colour, shape, or proportion, with digital smile design used to preview expected outcomes before preparation. Zoom teeth whitening delivers in-chair lightening results within a single session. Dental implant placement and full restoration cover single-tooth replacement and multi-tooth reconstruction, including All-on-X full-arch cases. The clinical team integrates cosmetic and restorative planning under what TDH describes as an Esthetic Concept approach, combining functional restoration with aesthetic outcome.
Clinical Team and Credentials
TDH's specialist team holds advanced qualifications from Thai and international institutions. The group includes a former clinical dental professor at the Faculty of Dentistry, Mahidol University, who held the position from 2009 to 2011. Other team members hold a Master of Science in Orthodontics from the University of Sydney, a Master's in Cosmetic Restorative Dentistry and Implant Dentistry from Chulalongkorn University, and a Graduate Certificate in Advanced Implantology from UCLA. Individual awards include first prize in the postgraduate orthodontics treatment cases category at the Australian Society of Orthodontists and recognition in the Thailand Joseph Lister Awards in Oral Prevention. The group conducts monthly internal clinical meetings to maintain knowledge sharing across branches.
Certification and Patient Services
TDH is ISO 9001:2015 certified across its network, reflecting quality management processes covering clinical protocols, patient safety, and service delivery. English-language service is available for international patients. The Ploenchit branch is open daily from 10:00 in the morning to 8:00 in the evening. Appointments can be made by phone, through the TDH website, or via the clinic's active social media channels on Instagram at @tdhdental, Facebook at ThonglorDentalHospital, TikTok at @tdh_dental, and YouTube.
