2018: Founded; Jan 2021: $5M Series A; Aug 2021: $20M Series B; May 2022: $40M Series C; Jan 2023: $9M Debt; Jan 2024: $16M bridge round; Aug 2025: Acquired Apple Dental for INR 10.9 Cr; Feb 2026: Announced Zenyum acquisition/merger; Achieved EBITDA positive
Notable Customers
Over 300,000 smiling consumers across India and GCC
Toothsi occupies a distinctive position in the Indian dental market as the only consumer-facing clear aligner brand with ISO and CE certified in-house manufacturing. Founded in 2018, the company addresses a gap between expensive imported aligners like Invisalign and clinic-only alternatives by producing affordable, high-quality aligners domestically using polymer additive manufacturing.
The company operates India's largest in-house 3D printing facility for clear aligners, with US FDA 510(k) clearance and proprietary treatment planning software. Its product suite includes clear aligners, at-home teeth straightening kits, and the SmilePlanner app. Toothsi also expanded regionally by acquiring Smileneo, a Dubai-based clear aligner brand.
Toothsi targets Indian consumers seeking affordable teeth straightening, having served over 140,000 smile makeovers through a network of orthodontists across India. The company competes with Invisalign, SmileDirectClub, and Flash Orthodontics, differentiating through local manufacturing that reduces costs while maintaining clinical oversight.
The company has raised approximately $90 million from investors including Eight Roads Ventures, Think Investments, and Stride Ventures. Despite strong growth, Toothsi has faced runway challenges and recent layoffs of around 30 employees, raising questions about unit economics in the price-sensitive Indian D2C orthodontics segment.