Review (5/5): Exactly what I needed and wanted
I had a thin black line of tartar (a.k.a. dental calculus) on my back upper molars along my gum line and wanted it to be removed. I brush 2x's within 24 hours, floss, and use a water piker. This product helped me remove the tartar. The process requires patience because each tiny section of tartar seemed to require 5 minutes of application, but the product was effective and easy to use. I initially assumed the tip on the electronic teeth scaler would be extremely sharp and I may accidentally puncture myself, but with care neither was the case for me. Always start on the lowest vibration setting, increasing the vibration after some experience. Additionally, I relied on the YouTube channel "Teeth Talk Girl", a dental hygenist, to provide me videos of how hygienists properly use teeth scalers to remove tartar and plaque and applied them to myself.
In regards to the other tool provided, the manual teeth scaler, please be careful because it is extremely sharp and one can easy hurt/injure your gums. I personally will avoid using this tool.