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- Hacker News
- A shame about the discolouration.by nephihaha
- The dark coloration reminds me of the silver tooth fillings my grandparents had. Even if this solution is not metallic, the darkness is still the same if you don't look closely.by evanjrowley
- As a parent with an autistic kid that wont let the dentist even use a sonic pick, I welcome this.by ChiperSoft